Merge branch 'master' into portability

2025-03-23 04:20:47 +00:00 · 2023-03-17 23:53:38 +07:00 · 2023-03-17 23:53:38 +07:00 · bdfcd50b1b
commit bdfcd50b1b
parent 73f22e31c7 65ee11ff63
1109 changed files with 57916 additions and 19747 deletions
--- a/test/vendor/ceedling/plugins/bullseye/readme.txt
+++ b/test/vendor/ceedling/plugins/bullseye/readme.txt
--- a/.codespell/ignore-words.txt
+++ b/.codespell/ignore-words.txt
@ -0,0 +1,11 @@
+synopsys
+sie
+tre
+hsi
+fro
+dout
+mot
+te
+attch
+endianess
+pris
--- a/.codespellrc
+++ b/.codespellrc
@ -0,0 +1,10 @@
+# See: https://github.com/codespell-project/codespell#using-a-config-file
+[codespell]
+# In the event of a false positive, add the problematic word, in all lowercase, to 'ignore-words.txt' (one word per line).
+# Or copy & paste the whole problematic line to 'exclude-file.txt'
+ignore-words = .codespell/ignore-words.txt
+exclude-file = .codespell/exclude-file.txt
+check-filenames =
+check-hidden =
+count =
+skip = *.rb,.cproject,.git,./lib,./examples/*/*/_build,./examples/*/*/ses,./examples/*/*/ozone,./hw/mcu,./tests_obsolete
--- a/.gitattributes
+++ b/.gitattributes
@ -1,10 +1,10 @@
 # Set the default behavior, in case people don't have core.autocrlf set.
 * text=auto

-*.c text 
-*.cpp text 
+*.c text
+*.cpp text
 *.h text
-*.icf text 
+*.icf text
 *.js text
 *.json text
 *.ld text
--- a/.github/ISSUE_TEMPLATE/bug_report.yml
+++ b/.github/ISSUE_TEMPLATE/bug_report.yml
@ -54,7 +54,7 @@ body:
        Exact steps in chronological order, details should be specific e.g if you use a command/script to test with, please post it as well.
        1. Go to '...'
        2. Click on '....'
-        3. See error      
+        3. See error
    validations:
      required: true

@ -63,9 +63,9 @@ body:
      label: Debug Log as txt file
      placeholder: |
        Attach your debug log txt file here, where the issue occurred, best with comments to explain the actual events.
-        
-        Note1: Please DO NOT paste your lengthy log contents here since it hurts the readibility.
-        Note2: To enable logging, add `LOG=3` to to the make command if building with stock examples or set `CFG_TUSB_DEBUG=3` in your tusb_config.h. 
+
+        Note1: Please DO NOT paste your lengthy log contents here since it hurts the readability.
+        Note2: To enable logging, add `LOG=3` to to the make command if building with stock examples or set `CFG_TUSB_DEBUG=3` in your tusb_config.h.
        More information can be found at [example's readme](https://github.com/hathach/tinyusb/blob/master/docs/getting_started.md)
    validations:
      required: false
--- a/.github/workflows/build_aarch64.yml
+++ b/.github/workflows/build_aarch64.yml
@ -1,11 +1,25 @@
 name: Build AArch64

 on:
-  pull_request:
  push:
-  release:
-    types:
-      - created
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_aarch64.yml'
+  pull_request:
+    branches: [ master ]
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_aarch64.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true

 jobs:
  # ---------------------------------------
@ -21,14 +35,13 @@ jobs:
        - 'broadcom_64bit'
    steps:
    - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'

    - name: Checkout TinyUSB
      uses: actions/checkout@v3

-    - name: Checkout common submodules in lib
-      run: git submodule update --init lib/FreeRTOS-Kernel lib/lwip lib/sct_neopixel
-
    - name: Checkout hathach/linkermap
      uses: actions/checkout@v3
      with:
@ -39,7 +52,7 @@ jobs:
      run: echo >> $GITHUB_ENV TOOLCHAIN_URL=https://developer.arm.com/-/media/Files/downloads/gnu-a/10.3-2021.07/binrel/gcc-arm-10.3-2021.07-x86_64-aarch64-none-elf.tar.xz

    - name: Cache Toolchain
-      uses: actions/cache@v2
+      uses: actions/cache@v3
      id: cache-toolchain
      with:
        path: ~/cache/
@ -56,7 +69,7 @@ jobs:
      run: echo >> $GITHUB_PATH `echo ~/cache/toolchain/*/bin`

    - name: Get Dependencies
-      run: python3 tools/get_dependencies.py ${{ matrix.family }}
+      run: python3 tools/get_family_deps.py ${{ matrix.family }}

    - name: Build
      run: python3 tools/build_family.py ${{ matrix.family }}
--- a/.github/workflows/build_arm.yml
+++ b/.github/workflows/build_arm.yml
@ -1,34 +1,27 @@
 name: Build ARM

 on:
-  pull_request:
  push:
-  release:
-    types:
-      - created
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_arm.yml'
+  pull_request:
+    branches: [ master ]
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_arm.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true

 jobs:
-  # ---------------------------------------
-  # Unit testing with Ceedling
-  # ---------------------------------------
-  unit-test:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Setup Ruby
-      uses: ruby/setup-ruby@v1
-      with:
-        ruby-version: '2.7'
-
-    - name: Checkout TinyUSB
-      uses: actions/checkout@v3
-
-    - name: Unit Tests
-      run: |
-        # Install Ceedling
-        gem install ceedling
-        cd test
-        ceedling test:all
-
  # ---------------------------------------
  # Build ARM family
  # ---------------------------------------
@ -41,31 +34,28 @@ jobs:
        # Alphabetical order
        - 'broadcom_32bit'
        - 'imxrt'
-        - 'lpc15'
-        - 'lpc18'
-        - 'lpc54'
-        - 'lpc55'
-        - 'mm32'
-        - 'msp432e4'
+        - 'lpc15 lpc18'
+        - 'lpc54 lpc55'
+        - 'mm32 msp432e4'
        - 'nrf'
+        - 'ra'
        - 'rp2040'
        - 'samd11'
        - 'samd21'
        - 'samd51'
        - 'saml2x'
-        - 'stm32f0'
-        - 'stm32f1'
+        - 'stm32f0 stm32f1'
        - 'stm32f4'
        - 'stm32f7'
-        - 'stm32g4'
+        - 'stm32g4 stm32wb'
        - 'stm32h7'
        - 'stm32l4'
-        - 'stm32wb'
-        - 'tm4c123'
-        - 'xmc4000'
+        - 'tm4c123 xmc4000'
    steps:
    - name: Setup Python
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'

    - name: Install ARM GCC
      uses: carlosperate/arm-none-eabi-gcc-action@v1
@ -75,9 +65,6 @@ jobs:
    - name: Checkout TinyUSB
      uses: actions/checkout@v3

-    - name: Checkout common submodules in lib
-      run: git submodule update --init lib/FreeRTOS-Kernel lib/lwip lib/sct_neopixel
-
    - name: Checkout hathach/linkermap
      uses: actions/checkout@v3
      with:
@ -91,7 +78,7 @@ jobs:
        echo >> $GITHUB_ENV PICO_SDK_PATH=~/pico-sdk

    - name: Get Dependencies
-      run: python3 tools/get_dependencies.py ${{ matrix.family }}
+      run: python3 tools/get_family_deps.py ${{ matrix.family }}

    - name: Build
      run: python3 tools/build_family.py ${{ matrix.family }}
@ -99,16 +86,37 @@ jobs:
    - name: Linker Map
      run: |
        pip install linkermap/
-        for ex in `ls -d examples/device/*/`; do \
-          find ${ex} -name *.map -print -quit | \
-          xargs -I % sh -c 'echo "::group::%"; linkermap -v %; echo "::endgroup::"'; \
+        # find -quit to only print linkermap of 1 board per example
+        for ex in `ls -d examples/*/*/`
+        do
+          find ${ex} -name *.map -print -quit | xargs -I % sh -c 'echo "::group::%"; linkermap -v %; echo "::endgroup::"'
        done

+    # Upload binaries for rp2040/stm32l412nucleo hardware test with self-hosted
+
+    - name: Prepare rp2040 Artifacts
+      if: matrix.family == 'rp2040' && github.repository_owner == 'hathach'
+      run: find examples/ -name "*.elf" -exec mv {} . \;
+
+    - name: Prepare stm32l412nucleo Artifacts
+      if: matrix.family == 'stm32l4'
+      run: find examples/ -path "*stm32l412nucleo/*.elf" -exec mv {} . \;
+
+    - name: Upload Artifacts for hardware testing
+      if: matrix.family == 'stm32l4' || (matrix.family == 'rp2040' && github.repository_owner == 'hathach')
+      uses: actions/upload-artifact@v3
+      with:
+        name: ${{ matrix.family }}
+        path: |
+          *.elf
+
  # ---------------------------------------
  # Build all no-family (orphaned) boards
+  # disable this workflow since it is often failed randomly
  # ---------------------------------------
  build-board:
    runs-on: ubuntu-latest
+    if: false
    strategy:
      fail-fast: false
      matrix:
@ -122,7 +130,9 @@ jobs:

    steps:
    - name: Setup Python
-      uses: actions/setup-python@v3
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'

    - name: Install ARM GCC
      uses: carlosperate/arm-none-eabi-gcc-action@v1
@ -132,8 +142,131 @@ jobs:
    - name: Checkout TinyUSB
      uses: actions/checkout@v3

-    - name: Checkout common submodules in lib
-      run: git submodule update --init lib/FreeRTOS-Kernel lib/lwip
-
    - name: Build
      run: python3 tools/build_board.py ${{ matrix.example }}
+
+  # ---------------------------------------
+  # Hardware in the loop (HIL)
+  # Current self-hosted instance is running on an RPI4 with
+  # - pico + pico-probe connected via USB
+  # - pico-probe is /dev/ttyACM0
+  # ---------------------------------------
+  hw-rp2040-test:
+    # run only with hathach's commit due to limited resource on RPI4
+    if: github.repository_owner == 'hathach'
+    needs: build-arm
+    runs-on: [self-hosted, Linux, ARM64, rp2040]
+
+    steps:
+    - name: Clean workspace
+      run: |
+        echo "Cleaning up previous run"
+        rm -rf "${{ github.workspace }}"
+        mkdir -p "${{ github.workspace }}"
+
+    - name: Download rp2040 Artifacts
+      uses: actions/download-artifact@v3
+      with:
+        name: rp2040
+
+    - name: Create flash.sh
+      run: |
+        #echo > flash.sh 'cmdout=$(openocd -f "interface/picoprobe.cfg" -f "target/rp2040.cfg" -c "program $1 reset exit")'
+        echo > flash.sh 'pyocd flash -t rp2040 $1'
+        echo >> flash.sh 'if (( $? )) ; then echo $cmdout ; fi'
+        chmod +x flash.sh
+
+    - name: Test cdc_dual_ports
+      run: |
+        ./flash.sh cdc_dual_ports.elf
+        while (! ([ -e /dev/ttyACM1 ] && [ -e /dev/ttyACM2 ])) && [ $SECONDS -le 10 ]; do :; done
+        test -e /dev/ttyACM1 && echo "ttyACM1 exists"
+        test -e /dev/ttyACM2 && echo "ttyACM2 exists"
+
+    - name: Test cdc_msc
+      run: |
+        ./flash.sh cdc_msc.elf
+        readme='/media/pi/TinyUSB MSC/README.TXT'
+        while (! ([ -e /dev/ttyACM1 ] && [ -f "$readme" ])) && [ $SECONDS -le 10 ]; do :; done
+        test -e /dev/ttyACM1 && echo "ttyACM1 exists"
+        test -f "$readme" && echo "$readme exists"
+        cat "$readme"
+
+    - name: Test dfu
+      run: |
+        ./flash.sh dfu.elf
+        while (! (dfu-util -l | grep "Found DFU")) && [ $SECONDS -le 10 ]; do :; done
+        dfu-util -d cafe -a 0 -U dfu0
+        dfu-util -d cafe -a 1 -U dfu1
+        grep "TinyUSB DFU! - Partition 0" dfu0
+        grep "TinyUSB DFU! - Partition 1" dfu1
+
+    - name: Test dfu_runtime
+      run: |
+        ./flash.sh dfu_runtime.elf
+        while (! (dfu-util -l | grep "Found Runtime")) && [ $SECONDS -le 10 ]; do :; done
+
+  # ---------------------------------------
+  # Hardware in the loop (HIL)
+  # Current self-hosted instance is running on an EPYC 7232 server hosted by HiFiPhile user
+  # - STM32L412 Nucleo with on-board jlink as ttyACM0
+  # ---------------------------------------
+  hw-stm32l412nucleo-test:
+    needs: build-arm
+    runs-on: [self-hosted, Linux, X64, hifiphile]
+
+    steps:
+    - name: Clean workspace
+      run: |
+        echo "Cleaning up previous run"
+        rm -rf "${{ github.workspace }}"
+        mkdir -p "${{ github.workspace }}"
+
+    - name: Download stm32l4 Artifacts
+      uses: actions/download-artifact@v3
+      with:
+        name: stm32l4
+
+    - name: Create flash.sh
+      run: |
+        echo > flash.sh 'echo halt > flash.jlink'
+        echo >> flash.sh 'echo r >> flash.jlink'
+        echo >> flash.sh 'echo loadfile $1 >> flash.jlink'
+        echo >> flash.sh 'echo r >> flash.jlink'
+        echo >> flash.sh 'echo go >> flash.jlink'
+        echo >> flash.sh 'echo exit >> flash.jlink'
+        echo >> flash.sh 'cmdout=$(JLinkExe -device stm32l412kb -if swd -JTAGConf -1,-1 -speed auto -NoGui 1 -ExitOnError 1 -CommandFile flash.jlink)'
+        echo >> flash.sh 'if (( $? )) ; then echo $cmdout ; fi'
+        chmod +x flash.sh
+
+    - name: Test cdc_dual_ports
+      run: |
+        ./flash.sh cdc_dual_ports.elf
+        while (! ([ -e /dev/ttyACM1 ] && [ -e /dev/ttyACM2 ])) && [ $SECONDS -le 10 ]; do :; done
+        test -e /dev/ttyACM1 && echo "ttyACM1 exists"
+        test -e /dev/ttyACM2 && echo "ttyACM2 exists"
+
+      # Debian does not auto mount usb drive. skip this test for now
+    - name: Test cdc_msc
+      if: false
+      run: |
+        ./flash.sh cdc_msc.elf
+        readme='/media/pi/TinyUSB MSC/README.TXT'
+        while (! ([ -e /dev/ttyACM1 ] && [ -f "$readme" ])) && [ $SECONDS -le 10 ]; do :; done
+        test -e /dev/ttyACM1 && echo "ttyACM1 exists"
+        test -f "$readme" && echo "$readme exists"
+        cat "$readme"
+
+    - name: Test dfu
+      run: |
+        ./flash.sh dfu.elf
+        while (! (dfu-util -l | grep "Found DFU")) && [ $SECONDS -le 10 ]; do :; done
+        dfu-util -d cafe -a 0 -U dfu0
+        dfu-util -d cafe -a 1 -U dfu1
+        grep "TinyUSB DFU! - Partition 0" dfu0
+        grep "TinyUSB DFU! - Partition 1" dfu1
+
+    - name: Test dfu_runtime
+      run: |
+        ./flash.sh dfu_runtime.elf
+        while (! (dfu-util -l | grep "Found Runtime")) && [ $SECONDS -le 10 ]; do :; done
--- a/.github/workflows/build_esp.yml
+++ b/.github/workflows/build_esp.yml
@ -1,11 +1,25 @@
 name: Build ESP

 on:
-  pull_request:
  push:
-  release:
-    types:
-      - created
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_esp.yml'
+  pull_request:
+    branches: [ master ]
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_esp.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true

 jobs:
  build-esp:
@ -23,7 +37,9 @@ jobs:

    steps:
    - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'

    - name: Pull ESP-IDF docker
      run: docker pull espressif/idf:latest
@ -43,7 +59,8 @@ jobs:
    - name: Linker Map
      run: |
        pip install linkermap/
-        for ex in `ls -d examples/device/*/`; do \
-          find ${ex} -maxdepth 3 -name *.map -print -quit | \
-          xargs -I % sh -c 'echo "::group::%"; linkermap -v %; echo "::endgroup::"'; \
+        # find -quit to only print linkermap of 1 board per example
+        for ex in `ls -d examples/device/*/`
+        do
+          find ${ex} -maxdepth 3 -name *.map -print -quit | xargs -I % sh -c 'echo "::group::%"; linkermap -v %; echo "::endgroup::"'
        done
--- a/.github/workflows/build_iar.yml
+++ b/.github/workflows/build_iar.yml
@ -0,0 +1,49 @@
+name: Build IAR
+
+on:
+  push:
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_iar.yml'
+  pull_request:
+    branches: [ master ]
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_iar.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  build-arm:
+    runs-on: [self-hosted, Linux, X64, hifiphile]
+    strategy:
+      fail-fast: false
+      matrix:
+        family:
+        # Alphabetical order
+        # Note: bundle multiple families into a matrix since there is only one self-hosted instance can
+        # run IAR build. Too many matrix can hurt due to setup/teardown overhead.
+        - 'stm32f0 stm32f1 stm32f4 stm32f7 stm32g4 stm32h7 stm32l4'
+    steps:
+    - name: Clean workspace
+      run: |
+        echo "Cleaning up previous run"
+        rm -rf "${{ github.workspace }}"
+        mkdir -p "${{ github.workspace }}"
+
+    - name: Checkout TinyUSB
+      uses: actions/checkout@v3
+
+    - name: Get Dependencies
+      run: python3 tools/get_family_deps.py ${{ matrix.family }}
+
+    - name: Build
+      run: python3 tools/build_family.py ${{ matrix.family }} CC=iccarm
--- a/.github/workflows/build_msp430.yml
+++ b/.github/workflows/build_msp430.yml
@ -1,13 +1,27 @@
 name: Build MSP430

 on:
-  pull_request:
  push:
-  release:
-    types:
-      - created
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_msp430.yml'
+  pull_request:
+    branches: [ master ]
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_msp430.yml'

-jobs:  
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
  build-msp430:
    runs-on: ubuntu-latest
    strategy:
@ -16,16 +30,16 @@ jobs:
        family:
        # Alphabetical order
        - 'msp430'
+
    steps:
    - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'

    - name: Checkout TinyUSB
      uses: actions/checkout@v3

-    - name: Checkout common submodules in lib
-      run: git submodule update --init lib/FreeRTOS-Kernel lib/lwip
-
    - name: Checkout hathach/linkermap
      uses: actions/checkout@v3
      with:
@ -36,7 +50,7 @@ jobs:
      run: echo >> $GITHUB_ENV TOOLCHAIN_URL=http://software-dl.ti.com/msp430/msp430_public_sw/mcu/msp430/MSPGCC/9_2_0_0/export/msp430-gcc-9.2.0.50_linux64.tar.bz2

    - name: Cache Toolchain
-      uses: actions/cache@v2
+      uses: actions/cache@v3
      id: cache-toolchain
      with:
        path: ~/cache/
@ -53,7 +67,7 @@ jobs:
      run: echo >> $GITHUB_PATH `echo ~/cache/toolchain/*/bin`

    - name: Get Dependencies
-      run: python3 tools/get_dependencies.py ${{ matrix.family }}
+      run: python3 tools/get_family_deps.py ${{ matrix.family }}

    - name: Build
      run: python3 tools/build_family.py ${{ matrix.family }}
@ -61,7 +75,8 @@ jobs:
    - name: Linker Map
      run: |
        pip install linkermap/
-        for ex in `ls -d examples/device/*/`; do \
-          find ${ex} -name *.map -print -quit | \
-          xargs -I % sh -c 'echo "::group::%"; linkermap -v %; echo "::endgroup::"'; \
+        # find -quit to only print linkermap of 1 board per example
+        for ex in `ls -d examples/device/*/`
+        do
+          find ${ex} -name *.map -print -quit | xargs -I % sh -c 'echo "::group::%"; linkermap -v %; echo "::endgroup::"'
        done
--- a/.github/workflows/build_renesas.yml
+++ b/.github/workflows/build_renesas.yml
@ -1,11 +1,25 @@
 name: Build Renesas

 on:
-  pull_request:
  push:
-  release:
-    types:
-      - created
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_renesas.yml'
+  pull_request:
+    branches: [ master ]
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_renesas.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true

 jobs:
  build-rx:
@ -18,14 +32,13 @@ jobs:
        - 'rx'
    steps:
    - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'

    - name: Checkout TinyUSB
      uses: actions/checkout@v3

-    - name: Checkout common submodules in lib
-      run: git submodule update --init lib/FreeRTOS-Kernel lib/lwip
-
    - name: Checkout hathach/linkermap
      uses: actions/checkout@v3
      with:
@ -36,7 +49,7 @@ jobs:
      run: echo >> $GITHUB_ENV TOOLCHAIN_URL=http://gcc-renesas.com/downloads/get.php?f=rx/8.3.0.202004-gnurx/gcc-8.3.0.202004-GNURX-ELF.run

    - name: Cache Toolchain
-      uses: actions/cache@v2
+      uses: actions/cache@v3
      id: cache-toolchain
      with:
        path: ~/cache/
@ -54,7 +67,7 @@ jobs:
      run: echo >> $GITHUB_PATH `echo ~/cache/toolchain/*/bin`

    - name: Get Dependencies
-      run: python3 tools/get_dependencies.py ${{ matrix.family }}
+      run: python3 tools/get_family_deps.py ${{ matrix.family }}

    - name: Build
      run: python3 tools/build_family.py ${{ matrix.family }}
@ -62,7 +75,8 @@ jobs:
    - name: Linker Map
      run: |
        pip install linkermap/
-        for ex in `ls -d examples/device/*/`; do \
-          find ${ex} -name *.map -print -quit | \
-          xargs -I % sh -c 'echo "::group::%"; linkermap -v %; echo "::endgroup::"'; \
+        # find -quit to only print linkermap of 1 board per example
+        for ex in `ls -d examples/device/*/`
+        do
+          find ${ex} -name *.map -print -quit | xargs -I % sh -c 'echo "::group::%"; linkermap -v %; echo "::endgroup::"'
        done
--- a/.github/workflows/build_riscv.yml
+++ b/.github/workflows/build_riscv.yml
@ -1,11 +1,25 @@
 name: Build RISC-V

 on:
-  pull_request:
  push:
-  release:
-    types:
-      - created
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_riscv.yml'
+  pull_request:
+    branches: [ master ]
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_riscv.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true

 jobs:
  build-riscv:
@ -15,18 +29,18 @@ jobs:
      matrix:
        family:
        # Alphabetical order
+        - 'ch32v307'
        - 'fomu'
        - 'gd32vf103'
    steps:
    - name: Setup Python
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'

    - name: Checkout TinyUSB
      uses: actions/checkout@v3

-    - name: Checkout common submodules in lib
-      run: git submodule update --init lib/FreeRTOS-Kernel lib/lwip
-
    - name: Checkout hathach/linkermap
      uses: actions/checkout@v3
      with:
@ -37,7 +51,7 @@ jobs:
      run: echo >> $GITHUB_ENV TOOLCHAIN_URL=https://github.com/xpack-dev-tools/riscv-none-embed-gcc-xpack/releases/download/v10.1.0-1.1/xpack-riscv-none-embed-gcc-10.1.0-1.1-linux-x64.tar.gz

    - name: Cache Toolchain
-      uses: actions/cache@v2
+      uses: actions/cache@v3
      id: cache-toolchain
      with:
        path: ~/cache/
@ -54,7 +68,7 @@ jobs:
      run: echo >> $GITHUB_PATH `echo ~/cache/toolchain/*/bin`

    - name: Get Dependencies
-      run: python3 tools/get_dependencies.py ${{ matrix.family }}
+      run: python3 tools/get_family_deps.py ${{ matrix.family }}

    - name: Build
      run: python3 tools/build_family.py ${{ matrix.family }}
@ -62,7 +76,8 @@ jobs:
    - name: Linker Map
      run: |
        pip install linkermap/
-        for ex in `ls -d examples/device/*/`; do \
-          find ${ex} -name *.map -print -quit | \
-          xargs -I % sh -c 'echo "::group::%"; linkermap -v %; echo "::endgroup::"'; \
+        # find -quit to only print linkermap of 1 board per example
+        for ex in `ls -d examples/device/*/`
+        do
+          find ${ex} -name *.map -print -quit | xargs -I % sh -c 'echo "::group::%"; linkermap -v %; echo "::endgroup::"'
        done
--- a/.github/workflows/build_win_mac.yml
+++ b/.github/workflows/build_win_mac.yml
@ -0,0 +1,53 @@
+name: Build Windows/MacOS
+
+on:
+  push:
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_win_mac.yml'
+  pull_request:
+    branches: [ master ]
+    paths:
+      - 'src/**'
+      - 'examples/**'
+      - 'lib/**'
+      - 'hw/**'
+      - '.github/workflows/build_win_mac.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  # ---------------------------------------
+  # Build ARM family
+  # ---------------------------------------
+  build-arm:
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - name: Setup Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+
+    - name: Install ARM GCC
+      uses: carlosperate/arm-none-eabi-gcc-action@v1
+      with:
+        release: '10.3-2021.10'
+
+    - name: Checkout TinyUSB
+      uses: actions/checkout@v3
+
+    - name: Get Dependencies
+      run: python3 tools/get_family_deps.py stm32f4
+
+    - name: Build
+      run: python3 tools/build_family.py stm32f4 stm32f411disco
--- a/.github/workflows/cifuzz.yml
+++ b/.github/workflows/cifuzz.yml
@ -0,0 +1,33 @@
+name: CIFuzz
+on:
+  pull_request:
+    branches:
+      - master
+    paths:
+      - '**.c'
+      - '**.cc'
+      - '**.cpp'
+      - '**.cxx'
+      - '**.h'
+jobs:
+ Fuzzing:
+   runs-on: ubuntu-latest
+   steps:
+   - name: Build Fuzzers
+     id: build
+     uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
+     with:
+       oss-fuzz-project-name: 'tinyusb'
+       language: c++
+   - name: Run Fuzzers
+     uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
+     with:
+       oss-fuzz-project-name: 'tinyusb'
+       language: c++
+       fuzz-seconds: 600
+   - name: Upload Crash
+     uses: actions/upload-artifact@v3
+     if: failure() && steps.build.outcome == 'success'
+     with:
+       name: artifacts
+       path: ./out/artifacts
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@ -0,0 +1,47 @@
+name: pre-commit
+
+on:
+  push:
+  pull_request:
+    branches: [ master ]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Setup Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+
+    - name: Setup Ruby
+      uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: '3.0'
+
+    - name: Checkout TinyUSB
+      uses: actions/checkout@v3
+
+    - name: Get Dependencies
+      run: |
+        gem install ceedling
+        #cd test/unit-test
+        #ceedling test:all
+
+    - name: Run pre-commit
+      uses: pre-commit/action@v3.0.0
+
+    - name: Build Fuzzer
+      run: |
+        export CC=clang
+        export CXX=clang++
+        fuzz_harness=$(ls -d test/fuzz/device/*/)
+        for h in $fuzz_harness
+        do
+          make -C $h get-deps
+          make -C $h all
+        done
--- a/.github/workflows/trigger.yml
+++ b/.github/workflows/trigger.yml
@ -43,7 +43,7 @@ jobs:
        if [ -n "$(git status --porcelain)" ]; then
          git add .
          git commit --message "Update from https://github.com/$GITHUB_REPOSITORY/commit/$GITHUB_SHA"
-          git push 
+          git push
        fi

    - name: Create tinyusb_src Release
@ -53,8 +53,7 @@ jobs:
        cd tinyusb_src
        git tag ${{ github.event.release.tag_name }}
        git push origin ${{ github.event.release.tag_name }}
-        
+
        # Send POST reqwuest to release https://docs.github.com/en/rest/reference/repos#create-a-release
-        bb={{ github.event.release.body }}
-        bb=${bb//\n/\\\n}
+        bb="For release note, please checkout https://github.com/hathach/tinyusb/releases/tag/${{ github.event.release.tag_name }}"
        curl -X POST -H "Authorization: token ${{ secrets.API_TOKEN_GITHUB }}" -H "Accept: application/vnd.github.v3+json" --data '{"tag_name": "${{ github.event.release.tag_name }}", "name": "${{ github.event.release.name }}", "body": "$bb", "draft": ${{ github.event.release.draft }}, "prerelease": ${{ github.event.release.prerelease }}}' https://api.github.com/repos/hathach/tinyusb_src/releases
--- a/.gitignore
+++ b/.gitignore
@ -13,6 +13,7 @@ latex
 .env
 .settings/
 .idea/
+.vscode/
 .gdb_history
 /examples/*/*/build*
 test_old/
@ -28,3 +29,57 @@ cov-int
 /_bin/
 __pycache__

+# submodules
+hw/mcu/allwinner
+hw/mcu/bridgetek/ft9xx/ft90x-sdk
+hw/mcu/broadcom
+hw/mcu/gd/nuclei-sdk
+hw/mcu/infineon/mtb-xmclib-cat3
+hw/mcu/microchip
+hw/mcu/mindmotion/mm32sdk
+hw/mcu/nordic/nrfx
+hw/mcu/nuvoton
+hw/mcu/nxp/lpcopen
+hw/mcu/nxp/mcux-sdk
+hw/mcu/nxp/nxp_sdk
+hw/mcu/raspberry_pi/Pico-PIO-USB
+hw/mcu/renesas/rx
+hw/mcu/silabs/cmsis-dfp-efm32gg12b
+hw/mcu/sony/cxd56/spresense-exported-sdk
+hw/mcu/st/cmsis_device_f0
+hw/mcu/st/cmsis_device_f1
+hw/mcu/st/cmsis_device_f2
+hw/mcu/st/cmsis_device_f3
+hw/mcu/st/cmsis_device_f4
+hw/mcu/st/cmsis_device_f7
+hw/mcu/st/cmsis_device_g0
+hw/mcu/st/cmsis_device_g4
+hw/mcu/st/cmsis_device_h7
+hw/mcu/st/cmsis_device_l0
+hw/mcu/st/cmsis_device_l1
+hw/mcu/st/cmsis_device_l4
+hw/mcu/st/cmsis_device_l5
+hw/mcu/st/cmsis_device_u5
+hw/mcu/st/cmsis_device_wb
+hw/mcu/st/stm32f0xx_hal_driver
+hw/mcu/st/stm32f1xx_hal_driver
+hw/mcu/st/stm32f2xx_hal_driver
+hw/mcu/st/stm32f3xx_hal_driver
+hw/mcu/st/stm32f4xx_hal_driver
+hw/mcu/st/stm32f7xx_hal_driver
+hw/mcu/st/stm32g0xx_hal_driver
+hw/mcu/st/stm32g4xx_hal_driver
+hw/mcu/st/stm32h7xx_hal_driver
+hw/mcu/st/stm32l0xx_hal_driver
+hw/mcu/st/stm32l1xx_hal_driver
+hw/mcu/st/stm32l4xx_hal_driver
+hw/mcu/st/stm32l5xx_hal_driver
+hw/mcu/st/stm32u5xx_hal_driver
+hw/mcu/st/stm32wbxx_hal_driver
+hw/mcu/ti
+hw/mcu/wch/ch32v307
+lib/CMSIS_5
+lib/FreeRTOS-Kernel
+lib/lwip
+lib/sct_neopixel
+tools/uf2
--- a/.gitmodules
+++ b/.gitmodules
@ -1,151 +0,0 @@
-[submodule "hw/mcu/nordic/nrfx"]
-	path = hw/mcu/nordic/nrfx
-	url = https://github.com/NordicSemiconductor/nrfx.git
-[submodule "tools/uf2"]
-	path = tools/uf2
-	url = https://github.com/microsoft/uf2.git
-[submodule "hw/mcu/sony/cxd56/spresense-exported-sdk"]
-	path = hw/mcu/sony/cxd56/spresense-exported-sdk
-	url = https://github.com/sonydevworld/spresense-exported-sdk.git
-[submodule "hw/mcu/ti"]
-	path = hw/mcu/ti
-	url = https://github.com/hathach/ti_driver.git
-[submodule "hw/mcu/microchip"]
-	path = hw/mcu/microchip
-	url = https://github.com/hathach/microchip_driver.git
-[submodule "hw/mcu/nuvoton"]
-	path = hw/mcu/nuvoton
-	url = https://github.com/majbthrd/nuc_driver.git
-[submodule "lib/lwip"]
-	path = lib/lwip
-	url = https://github.com/lwip-tcpip/lwip.git
-[submodule "hw/mcu/st/cmsis_device_f4"]
-	path = hw/mcu/st/cmsis_device_f4
-	url = https://github.com/STMicroelectronics/cmsis_device_f4.git
-[submodule "hw/mcu/st/stm32f4xx_hal_driver"]
-	path = hw/mcu/st/stm32f4xx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32f4xx_hal_driver.git
-[submodule "hw/mcu/st/cmsis_device_f0"]
-	path = hw/mcu/st/cmsis_device_f0
-	url = https://github.com/STMicroelectronics/cmsis_device_f0.git
-[submodule "hw/mcu/st/stm32f0xx_hal_driver"]
-	path = hw/mcu/st/stm32f0xx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32f0xx_hal_driver.git
-[submodule "hw/mcu/st/cmsis_device_f1"]
-	path = hw/mcu/st/cmsis_device_f1
-	url = https://github.com/STMicroelectronics/cmsis_device_f1.git
-[submodule "hw/mcu/st/stm32f1xx_hal_driver"]
-	path = hw/mcu/st/stm32f1xx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32f1xx_hal_driver.git
-[submodule "hw/mcu/st/cmsis_device_f2"]
-	path = hw/mcu/st/cmsis_device_f2
-	url = https://github.com/STMicroelectronics/cmsis_device_f2.git
-[submodule "hw/mcu/st/stm32f2xx_hal_driver"]
-	path = hw/mcu/st/stm32f2xx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32f2xx_hal_driver.git
-[submodule "hw/mcu/st/cmsis_device_f3"]
-	path = hw/mcu/st/cmsis_device_f3
-	url = https://github.com/STMicroelectronics/cmsis_device_f3.git
-[submodule "hw/mcu/st/stm32f3xx_hal_driver"]
-	path = hw/mcu/st/stm32f3xx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32f3xx_hal_driver.git
-[submodule "hw/mcu/st/cmsis_device_f7"]
-	path = hw/mcu/st/cmsis_device_f7
-	url = https://github.com/STMicroelectronics/cmsis_device_f7.git
-[submodule "hw/mcu/st/stm32f7xx_hal_driver"]
-	path = hw/mcu/st/stm32f7xx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32f7xx_hal_driver.git
-[submodule "hw/mcu/st/cmsis_device_h7"]
-	path = hw/mcu/st/cmsis_device_h7
-	url = https://github.com/STMicroelectronics/cmsis_device_h7.git
-[submodule "hw/mcu/st/stm32h7xx_hal_driver"]
-	path = hw/mcu/st/stm32h7xx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32h7xx_hal_driver.git
-[submodule "hw/mcu/st/cmsis_device_l0"]
-	path = hw/mcu/st/cmsis_device_l0
-	url = https://github.com/STMicroelectronics/cmsis_device_l0.git
-[submodule "hw/mcu/st/stm32l0xx_hal_driver"]
-	path = hw/mcu/st/stm32l0xx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32l0xx_hal_driver.git
-[submodule "hw/mcu/st/cmsis_device_l1"]
-	path = hw/mcu/st/cmsis_device_l1
-	url = https://github.com/STMicroelectronics/cmsis_device_l1.git
-[submodule "hw/mcu/st/stm32l1xx_hal_driver"]
-	path = hw/mcu/st/stm32l1xx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32l1xx_hal_driver.git
-[submodule "hw/mcu/st/cmsis_device_l4"]
-	path = hw/mcu/st/cmsis_device_l4
-	url = https://github.com/STMicroelectronics/cmsis_device_l4.git
-[submodule "hw/mcu/st/stm32l4xx_hal_driver"]
-	path = hw/mcu/st/stm32l4xx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32l4xx_hal_driver.git
-[submodule "hw/mcu/st/cmsis_device_g0"]
-	path = hw/mcu/st/cmsis_device_g0
-	url = https://github.com/STMicroelectronics/cmsis_device_g0.git
-[submodule "hw/mcu/st/stm32g0xx_hal_driver"]
-	path = hw/mcu/st/stm32g0xx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32g0xx_hal_driver.git
-[submodule "hw/mcu/st/cmsis_device_g4"]
-	path = hw/mcu/st/cmsis_device_g4
-	url = https://github.com/STMicroelectronics/cmsis_device_g4.git
-[submodule "hw/mcu/st/stm32g4xx_hal_driver"]
-	path = hw/mcu/st/stm32g4xx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32g4xx_hal_driver.git
-[submodule "hw/mcu/st/cmsis_device_l5"]
-	path = hw/mcu/st/cmsis_device_l5
-	url = https://github.com/STMicroelectronics/cmsis_device_l5.git
-[submodule "hw/mcu/st/stm32l5xx_hal_driver"]
-	path = hw/mcu/st/stm32l5xx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32l5xx_hal_driver.git
-[submodule "hw/mcu/st/cmsis_device_wb"]
-	path = hw/mcu/st/cmsis_device_wb
-	url = https://github.com/STMicroelectronics/cmsis_device_wb.git
-[submodule "hw/mcu/st/stm32wbxx_hal_driver"]
-	path = hw/mcu/st/stm32wbxx_hal_driver
-	url = https://github.com/STMicroelectronics/stm32wbxx_hal_driver.git
-[submodule "lib/sct_neopixel"]
-	path = lib/sct_neopixel
-	url = https://github.com/gsteiert/sct_neopixel
-[submodule "lib/FreeRTOS-Kernel"]
-	path = lib/FreeRTOS-Kernel
-	url = https://github.com/FreeRTOS/FreeRTOS-Kernel.git
-[submodule "lib/CMSIS_5"]
-	path = lib/CMSIS_5
-	url = https://github.com/ARM-software/CMSIS_5.git
-[submodule "hw/mcu/silabs/cmsis-dfp-efm32gg12b"]
-	path = hw/mcu/silabs/cmsis-dfp-efm32gg12b
-	url = https://github.com/cmsis-packs/cmsis-dfp-efm32gg12b
-[submodule "hw/mcu/renesas/rx"]
-	path = hw/mcu/renesas/rx
-	url = https://github.com/kkitayam/rx_device.git
-[submodule "hw/mcu/nxp/lpcopen"]
-	path = hw/mcu/nxp/lpcopen
-	url = https://github.com/hathach/nxp_lpcopen.git
-[submodule "hw/mcu/nxp/mcux-sdk"]
-	path = hw/mcu/nxp/mcux-sdk
-	url = https://github.com/NXPmicro/mcux-sdk.git
-[submodule "hw/mcu/nxp/nxp_sdk"]
-	path = hw/mcu/nxp/nxp_sdk
-	url = https://github.com/hathach/nxp_sdk.git
-[submodule "hw/mcu/gd/nuclei-sdk"]
-	path = hw/mcu/gd/nuclei-sdk
-	url = https://github.com/Nuclei-Software/nuclei-sdk.git
-[submodule "hw/mcu/bridgetek/ft9xx/ft90x-sdk"]
-	path = hw/mcu/bridgetek/ft9xx/ft90x-sdk
-	url = https://github.com/BRTSG-FOSS/ft90x-sdk
-[submodule "hw/mcu/mindmotion/mm32sdk"]
-	path = hw/mcu/mindmotion/mm32sdk
-	url = https://github.com/hathach/mm32sdk.git
-[submodule "hw/mcu/broadcom"]
-	path = hw/mcu/broadcom
-	url = https://github.com/adafruit/broadcom-peripherals.git
-	branch = main-build
-[submodule "hw/mcu/infineon/mtb-xmclib-cat3"]
-	path = hw/mcu/infineon/mtb-xmclib-cat3
-	url = https://github.com/Infineon/mtb-xmclib-cat3.git
-[submodule "hw/mcu/allwinner"]
-	path = hw/mcu/allwinner
-	url = https://github.com/hathach/allwinner_driver.git
-[submodule "hw/mcu/raspberry_pi/Pico-PIO-USB"]
-	path = hw/mcu/raspberry_pi/Pico-PIO-USB
-	url = https://github.com/sekigon-gonnoc/Pico-PIO-USB.git
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@ -0,0 +1,29 @@
+# SPDX-FileCopyrightText: 2020 Diego Elio Pettenò
+#
+# SPDX-License-Identifier: Unlicense
+
+repos:
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.4.0
+  hooks:
+  - id: check-yaml
+  - id: trailing-whitespace
+  - id: end-of-file-fixer
+  - id: forbid-submodules
+
+- repo: https://github.com/codespell-project/codespell
+  rev: v2.2.4
+  hooks:
+  - id: codespell
+    #args: [-w]
+    exclude: ^lib/
+
+- repo: local
+  hooks:
+  - id: unit-test
+    name: unit-test
+    files: ^(src/|test/unit-test/)
+    entry: sh -c "cd test/unit-test && ceedling test:all"
+    pass_filenames: false
+    types_or: [c, header]
+    language: system
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@ -15,4 +15,3 @@ python:
 submodules:
  include: []
  recursive: false
-    
--- a/CONTRIBUTORS.rst
+++ b/CONTRIBUTORS.rst
@ -119,6 +119,7 @@ Notable contributors

 -  Port DCD Synopsys to support Silabs EFM32GG12 with SLTB009A board
 -  Rewrite documentation in rst and setup for readthedocs
+-  Generalize Renesas driver and support RA family with EK-RA4M3 board


 `Raspberry Pi Team <https://github.com/raspberrypi>`__
--- a/README.rst
+++ b/README.rst
@ -1,7 +1,7 @@
 .. figure:: docs/assets/logo.svg
   :alt: TinyUSB

-|Build Status| |Documentation Status| |License|
+|Build Status| |Documentation Status| |Fuzzing Status| |License|

 TinyUSB is an open-source cross-platform USB Host/Device stack for
 embedded system, designed to be memory-safe with no dynamic allocation
@ -48,12 +48,17 @@ The stack supports the following MCUs:
  - LPC Series: 11u, 13, 15, 17, 18, 40, 43, 51u, 54, 55

 - **Raspberry Pi:** RP2040
- **Renesas:** RX63N, RX65N, RX72N
+- **Renesas:**
+
+  - RX Series: 63N, 65N, 72N
+  - RA Series: RA4M1, RA4M3
+
 - **Silabs:** EFM32GG
 - **Sony:** CXD56
 - **ST:** STM32 series: F0, F1, F2, F3, F4, F7, H7, G4, L0, L1, L4, L4+, WB
 - **TI:** MSP430, MSP432E4, TM4C123
 - **ValentyUSB:** eptri
+- **WCH:** CH32V307

 Here is the list of `Supported Devices`_ that can be used with provided examples.

@ -129,6 +134,8 @@ in your project.
   :target: https://github.com/hathach/tinyusb/actions
 .. |Documentation Status| image:: https://readthedocs.org/projects/tinyusb/badge/?version=latest
   :target: https://docs.tinyusb.org/en/latest/?badge=latest
+.. |Fuzzing Status| image:: https://oss-fuzz-build-logs.storage.googleapis.com/badges/tinyusb.svg
+   :target: https://oss-fuzz-build-logs.storage.googleapis.com/index.html#tinyusb
 .. |License| image:: https://img.shields.io/badge/license-MIT-brightgreen.svg
   :target: https://opensource.org/licenses/MIT

--- a/docs/assets/stack.svg
+++ b/docs/assets/stack.svg
--- a/docs/contributing/code_of_conduct.rst
+++ b/docs/contributing/code_of_conduct.rst
@ -1 +1 @@
-../../CODE_OF_CONDUCT.rst
+../../CODE_OF_CONDUCT.rst
--- a/docs/contributing/index.rst
+++ b/docs/contributing/index.rst
@ -6,7 +6,7 @@ Contributing can be highly rewarding, but it can also be frustrating at times.
 It takes time to review patches, and as this is an open source project, that
 sometimes can take a while. The reviewing process depends on the availability
 of the maintainers, who may not be always available. Please try to be
-understanding throught the process.
+understanding through the process.

 There a few guidelines you need to keep in mind when contributing. Please have
 a look at them as that will make the contribution process easier for all
--- a/docs/contributing/porting.rst
+++ b/docs/contributing/porting.rst
@ -195,7 +195,7 @@ Others (like the nRF52) may need each USB packet queued individually. To make th
 some state for yourself and queue up an intermediate USB packet from the interrupt handler.

 Once the transaction is going, the interrupt handler will notify TinyUSB of transfer completion.
-During transmission, the IN data buffer is guarenteed to remain unchanged in memory until the ``dcd_xfer_complete`` function is called.
+During transmission, the IN data buffer is guaranteed to remain unchanged in memory until the ``dcd_xfer_complete`` function is called.

 The dcd_edpt_xfer function must never add zero-length-packets (ZLP) on its own to a transfer. If a ZLP is required,
 then it must be explicitly sent by the stack calling dcd_edpt_xfer(), by calling dcd_edpt_xfer() a second time with len=0.
@ -238,4 +238,4 @@ Use `WireShark <https://www.wireshark.org/>`_ or `a Beagle <https://www.totalpha

 * If the host sends a SETUP packet and its not ACKed then your USB peripheral probably isn't started correctly.
 * If the peripheral is started correctly but it still didn't work, then verify your usb clock is correct. (You did output a PWM based on it right? ;-) )
-* If the SETUP packet is ACKed but nothing is sent back then you interrupt handler isn't queueing the setup packet correctly. (Also, if you are using your own code instead of an example ``tud_task`` may not be called.) If thats OK, the ``dcd_xfer_complete`` may not be setting up the next transaction correctly.
+* If the SETUP packet is ACKed but nothing is sent back then you interrupt handler isn't queueing the setup packet correctly. (Also, if you are using your own code instead of an example ``tud_task`` may not be called.) If that's OK, the ``dcd_xfer_complete`` may not be setting up the next transaction correctly.
--- a/docs/info/changelog.rst
+++ b/docs/info/changelog.rst
@ -2,6 +2,78 @@
 Changelog
 *********

+0.15.0
+======
+
+- Add codespell to detect typo
+- Add support for fuzzing and bagde for oss-fuzz
+- [osal]
+
+  - Allow the use of non-static allocation for FreeRTOS
+  - Fix FreeRTOS wrong task switch in some cases
+
+- Fix tu_fifo memory overflown when repeatedly write to overwritable fifo (accumulated more than 2 depths)
+- Better support for IAR (ARM) with ci build check for stm32 mcus.
+- Fix Windows build for some mingw gnu make situations
+
+Controller Driver (DCD & HCD)
+-----------------------------
+
+- Add new port support (WIP) for WCH CH32V307 USB Highspeed
+- Add new port support (WIP) for PIC32MM/MX & PIC24
+
+- [nRF]
+
+  - Fix endpoint internal state when closed
+  - Fix reception of large ISO packets
+
+- [rp2040]
+
+  - [dcd] Implement workaround for Errata 15. This enable SOF when bulk-in endpoint is in use and reduce its bandwidth to only 80%
+  - [hcd] Fix shared irq slots filling up when hcd_init() is called multiple times
+  - [hcd] Support host bulk endpoint using hw "interrupt" endpoint. Note speed limit is 64KB/s
+
+- [samd][dcd] Add support for ISO endpoint
+- [dwc2][dcd] Add support for stm32u5xx
+- [esp32sx] Fix Isochronous transfers only transmitted on even frame
+- [lpc_ip3511][dcd] Add isochronous support and fix endpoint accidental write
+- [ft90x] Improve and enhance support for FT9xx MCU, tested with more examples
+
+Device Stack
+------------
+
+- [Video]
+
+  - Add support for MJPEG
+  - Fix probe on macOS
+
+- [MIDI]
+
+  - Support port name strings
+  - fix MS Header wTotalLength computation
+
+- [HID]
+
+  - Add FIDO descriptor template
+  - change length in tud_hid_report_complete_cb() from uint8 to uint16
+
+- [CDC]
+
+  - Fix autoflush for FIFO < MPS
+  - Fix tx fifo memory overflown when DTR is not set and tud_cdc_write() is called repeatedly with large enough data
+
+- [USBTMC] Fix packet size with highspeed
+
+Host Stack
+----------
+
+- Retry a few times with transfers in enumeration since device can be unstable when starting up
+- [MSC] Rework host masstorage API. Add new **host/msc_file_explorer** example
+- [CDC]
+
+  - Add support for host cdc
+  - Fix host cdc with device without IAD e.g Arduino Due
+
 0.14.0
 ======

@ -9,7 +81,8 @@ Changelog
 - Add timeout to osal_queue_receive()
 - Add tud_task_ext(timeout, in_isr) as generic version of tud_task(). Same as tuh_task_ext(), tuh_task()
 - Enable more warnings -Wnull-dereference -Wuninitialized -Wunused -Wredundant-decls -Wconversion
- Add new examples 
+- Add new examples
+
  - host/bare_api to demonstrate generic (app-level) enumeration and endpoint transfer
  - dual/host_hid_to_device_cdc to run both device and host stack concurrently, get HID report from host and print out to device CDC. This example only work with multiple-controller MCUs and rp2040 with the help of pio-usb as added controller.

@ -17,30 +90,35 @@ Controller Driver (DCD & HCD)
 -----------------------------

 - Enhance rhports management to better support dual roles
+
  - CFG_TUD_ENABLED/CFG_TUH_ENABLED, CFG_TUD_MAX_SPEED/CFG_TUH_MAX_SPEED can be used to replace CFG_TUSB_RHPORT0_MODE/CFG_TUSB_RHPORT1_MODE
  - tud_init(rphort), tuh_init(rhport) can be used to init stack on specified roothub port (controller) instead of tusb_init(void)
 - Add dcd/hcd port specific defines TUP_ (stand for tinyusb port-specific)
 - [dwc2]
+
  - Update to support stm32 h72x, h73x with only 1 otg controller
  - Fix overwrite with grstctl when disable endpoint
 - [EHCI] Fix an issue with EHCI driver
 - [msp430] Fix for possible bug in msp430-elf-gcc 9.3.0
- [nrf5x] Fix DMA access race condition using atomic function 
+- [nrf5x] Fix DMA access race condition using atomic function
 - [pic32] Fix PIC32 santiy
 - [rp2040]
+
  - Add PICO-PIO-USB as controller (device/host) support for rp2040
  - Use shared IRQ handlers, so user can also hook the USB IRQ
  - Fix resumed signal not reported to device stack
- [stm32fsdev] Add support for stm32wb55 
+- [stm32fsdev] Add support for stm32wb55

 Device Stack
 ------------

 - [Audio] Add support for feedback endpoint computation
+
  - New API tud_audio_feedback_params_cb(), tud_audio_feedback_interval_isr().
  - Supported computation method are: frequency with fixed/float or power of 2. Feedback with fifo count is not yet supported.
  - Fix nitfs (should be 3) in TUD_AUDIO_HEADSET_STEREO_DESCRIPTOR
  - Fix typo in audiod_rx_done_cb()
+
 - [DFU] Fix coexistence with other interfaces BTH, RNDIS
 - [MSC] Fix inquiry response additional length field
 - [Venndor] Improve write performance
@ -52,9 +130,11 @@ Host Stack
 - [HID] Open OUT endpoint if available
 - [Hub] hub clear port and device interrupts
 - [USBH] Major improvement
+
  - Rework usbh control transfer with complete callback. New API tuh_control_xfer() though still only carry 1 usbh (no queueing) at a time.
  - Add generic endpoint transfer with tuh_edpt_open(), tuh_edpt_xfer(). Require `CFG_TUH_API_EDPT_XFER=1`
  - Support app-level enumeration with new APIs
+
    - tuh_descriptor_get(), tuh_descriptor_get_device(), tuh_descriptor_get_configuration(), tuh_descriptor_get_hid_report()
    - tuh_descriptor_get_string(), tuh_descriptor_get_manufacturer_string(), tuh_descriptor_get_product_string(), tuh_descriptor_get_serial_string()
    - Also add _sync() as sync/blocking version for above APIs
@ -78,14 +158,14 @@ Controller Driver (DCD & HCD)
 - [MUSB] Add new DCD and HCD for Mentor musb with TI MSP432E4
 - [F1C100s] Add new DCD for Allwinner F1C100s family
 - [PIC32MZ] Add new DCD for PIC32MZ
- [nRF] Fix/Enhance varous race condtion with: EASY DMA, request HFXO, EPOUT
- [ChipIdea] rename Transdimension to more popular ChipIdea Highspeed, 
+- [nRF] Fix/Enhance various race condition with: EASY DMA, request HFXO, EPOUT
+- [ChipIdea] rename Transdimension to more popular ChipIdea Highspeed,
 - [RP2040] various update/fix for hcd/dcd
 - [FT9XX] new DCD port for Bridgetek FT90x and FT93x devices
 - [DA1469X] Fix resume
 - [OHCI] Fix device array out of bound

-Note: legacy drivers such as st/synopsys, nxp/transdimension are still present in this release but won't recieve more update and could be removed in the future.
+Note: legacy drivers such as st/synopsys, nxp/transdimension are still present in this release but won't receive more update and could be removed in the future.

 Device Stack
 ------------
@ -166,7 +246,7 @@ RP2040
 ^^^^^^

 - Add RP2040 suspend & resume support
- Implement double buffer for both host and device (#891). Howver device EPOUT is still single bufferred due to techinical issue with short packet 
+- Implement double buffer for both host and device (#891). However device EPOUT is still single buffered due to techinical issue with short packet

 Device Stack
 ------------
@ -175,7 +255,7 @@ USBD
 ^^^^

 - Better support big endian mcu
- Add tuh_inited() and tud_inited(), will separte tusb_init/inited() to tud/tuh init/inited
+- Add tuh_inited() and tud_inited(), will separate tusb_init/inited() to tud/tuh init/inited
 - Add dcd_attr.h for defining common controller attribute such as max endpoints

 Bluetooth
@ -187,7 +267,7 @@ DFU
 ^^^

 - Enhance DFU implementation to support multiple alternate interface and better support bwPollTimeout
- Rename CFG_TUD_DFU_MODE to simply CFG_TUD_DFU 
+- Rename CFG_TUD_DFU_MODE to simply CFG_TUD_DFU

 HID
 ^^^
@ -207,7 +287,7 @@ UAC2
 ^^^^

 - Fix bug and enhance of UAC2
- 
+
 Vendor
 ^^^^^^

@ -220,8 +300,8 @@ Host Controller Driver (HCD)
 RP2040
 ^^^^^^

- Implement double bufferred to fix E4 errata and boost performance
- Lots of rp2040 update and enhancment
+- Implement double buffered to fix E4 errata and boost performance
+- Lots of rp2040 update and enhancement

 Host Stack
 ----------
@ -229,7 +309,7 @@ Host Stack
 - Major update and rework most of host stack, still needs more improvement
 - Lots of improvement and update in parsing configuration and control
 - Rework and major update to HID driver. Will default to enable boot interface if available
- Sepearate CFG_TUH_DEVICE_MAX and CFG_TUH_HUB for better management and reduce SRAM usage
+- Separate CFG_TUH_DEVICE_MAX and CFG_TUH_HUB for better management and reduce SRAM usage

 0.10.1 (2021-06-03)
 ===================
@ -306,12 +386,12 @@ MIDI
 Host Controller Driver (HCD)
 ----------------------------

- No noticable changes
+- No noticeable changes

 USB Host Driver (USBH)
 ----------------------

- No noticable changes
+- No noticeable changes

 Host Class Driver
 -----------------
@ -384,7 +464,7 @@ HID
 MIDI

 - Fix dropping MIDI sysex message when fifo is full
- Fix typo in tud_midi_write24(), make example less ambigous for cable and channel
+- Fix typo in tud_midi_write24(), make example less ambiguous for cable and channel
 - Fix incorrect endpoint descriptor length, MIDI v1 use Audio v1 which has 9-byte endpoint descriptor (instead of 7)

 Host Stack
@ -399,7 +479,7 @@ Host Controller Driver (HCD)
  - Move echi/ohci files to portable/
  - Rename hcd_lpc18_43 to hcd_transdimension
  - Sub hcd API with hcd_ehci_init(), hcd_ehci_register_addr()
-  
+
 - Update NXP transdimention hcd_init() to reset controller to host mode

  - Ported hcd to rt10xx
@ -449,13 +529,13 @@ Device Controller Driver

 - ESP32-S2:
  - Add bus suspend and wakeup support
-  
+
 - SAMD21:
  - Fix (walkaround) samd21 setup_packet overflow by USB DMA
-  
+
 - STM32 Synopsys:
  - Rework USB FIFO allocation scheme and allow RX FIFO size reduction
-  
+
 - Sony CXD56
  - Update Update Spresense SDK to 2.0.2
  - Fix dcd issues with setup packets
@ -474,17 +554,17 @@ USB Device

 - CDC
  - Allow to transmit data, even if the host does not support control line states i.e set DTR
-  
+
 - HID
  - change default CFG_TUD_HID_EP_BUFSIZE from 16 to 64
-  
+
 - MIDI
  - Fix midi sysex sending bug
-  
+
 - MSC
  - Invoke only scsi complete callback after status transaction is complete.
  - Fix scsi_mode_sense6_t padding, which cause IAR compiler internal error.
-  
+
 - USBTMC
  - Change interrupt endpoint example size to 8 instead of 2 for better compatibility with mcu

@ -534,20 +614,20 @@ Device Controller Driver
  - Fix FIFO flush during stall
  - Implement dcd_edpt_close() API
  - Support F105, F107
-  
+
 - Enhance STM32 fsdev
  - Improve dcd fifo allocation
  - Fix ISTR race condition
  - Support remap USB IRQ on supported MCUs
  - Implement dcd_edpt_close() API
-  
+
 - Enhance NUC 505: enhance set configure behavior

 - Enhance SAMD
  - Fix race condition with setup packet
  - Add SAMD11 option `OPT_MCU_SAMD11`
  - Add SAME5x option `OPT_MCU_SAME5X`
-  
+
 - Fix SAMG control data toggle and stall race condition

 - Enhance nRF
@ -579,7 +659,7 @@ USB Device
  - `usbd_driver_open()` add max length argument, and return length of interface (0 for not supported). Return value is used for finding appropriate driver
  - Add application implemented class driver via `usbd_app_driver_get_cb()`
  - IAD is handled to assign driver id
-  
+
 - Added `tud_descriptor_device_qualifier_cb()` callback
 - Optimize `tu_fifo` bulk write/read transfer
 - Forward non-std control request to class driver
@ -595,12 +675,12 @@ USB Device
  - Send zero length packet for end of data when needed
  - Add `tud_cdc_tx_complete_cb()` callback
  - Change tud_cdc_n_write_flush() return number of bytes forced to transfer, and flush when writing enough data to fifo
-  
+
 - MIDI:
  - Add packet interface
  - Add multiple jack descriptors
  - Fix MIDI driver for sysex
-  
+
 - DFU Runtime: fix response to SET_INTERFACE and DFU_GETSTATUS request

 - Rename some configure macro to make it clear that those are used directly for endpoint transfer
@ -608,7 +688,7 @@ USB Device
  - CFG_TUD_CDC_EPSIZE to CFG_TUD_CDC_EP_BUFSIZE
  - CFG_TUD_MSC_BUFSIZE to CFG_TUD_MSC_EP_BUFSIZE
  - CFG_TUD_MIDI_EPSIZE to CFG_TUD_MIDI_EP_BUFSIZE
-  
+
 - HID:
  - Fix gamepad template descriptor
  - Add multiple HID interface API
@ -620,7 +700,7 @@ USB Host
 - Rework USB host stack (still work in progress)
   - Fix compile error with pipehandle
   - Rework usbh control and enumeration as non-blocking
-   
+
 - Improve Hub, MSC, HID host driver

 Examples
@ -633,7 +713,7 @@ Examples
 - Enhance `net_lwip_webserver` example
  - Add multiple configuration: RNDIS for Windows, CDC-ECM for macOS (Linux will work with both)
  - Update lwip to STABLE-2_1_2_RELEASE for net_lwip_webserver
-  
+
 - Added new Audio example: audio_test uac2_headsest

 New Boards
@ -699,7 +779,7 @@ Changed
 - Generalized dcd_stm32f4.c to dcd_synopsys.c
 - Changed cdc_msc_hid to cdc_msc (drop hid) due to limited endpoints number of some MCUs
 - Improved DCD SAMD stability, fix missing setup packet occasionally
- Improved usbd/usbd_control with proper hanlding of zero-length packet (ZLP)
+- Improved usbd/usbd_control with proper handling of zero-length packet (ZLP)
 - Improved STM32 DCD FSDev
 - Improved STM32 DCD Synopsys
 - Migrated CI from Travis to Github Action
--- a/docs/info/contributors.rst
+++ b/docs/info/contributors.rst
@ -1 +1 @@
-../../CONTRIBUTORS.rst
+../../CONTRIBUTORS.rst
--- a/docs/reference/getting_started.rst
+++ b/docs/reference/getting_started.rst
@ -44,24 +44,24 @@ For your convenience, TinyUSB contains a handful of examples for both host and d
   $ git clone https://github.com/hathach/tinyusb tinyusb
   $ cd tinyusb

-Some TinyUSB examples also requires external submodule libraries in ``/lib`` such as FreeRTOS, Lightweight IP to build. Run following command to fetch them 
+Some TinyUSB examples also requires external submodule libraries in ``/lib`` such as FreeRTOS, Lightweight IP to build. Run following command to fetch them

 .. code-block::

   $ git submodule update --init lib

-Some ports will also require a port-specific SDK (e.g. RP2040) or binary (e.g. Sony Spresense) to build examples. They are out of scope for tinyusb, you should download/install it first according to its manufacturer guide. 
+Some ports will also require a port-specific SDK (e.g. RP2040) or binary (e.g. Sony Spresense) to build examples. They are out of scope for tinyusb, you should download/install it first according to its manufacturer guide.

 Build
 ^^^^^

-To build example, first change directory to an example folder. 
+To build example, first change directory to an example folder.

 .. code-block::

   $ cd examples/device/cdc_msc

-Before building, we need to download MCU driver submodule to provide low-level MCU peripheral's driver first. Run the ``get-dpes`` target in one of the example folder as follow. You only need to do this once per mcu
+Before building, we need to download MCU driver submodule to provide low-level MCU peripheral's driver first. Run the ``get-deps`` target in one of the example folder as follow. You only need to do this once per mcu

 .. code-block::

@ -118,7 +118,7 @@ To compile for debugging add ``DEBUG=1``\ , for example
 Log
 ~~~

-Should you have an issue running example and/or submitting an bug report. You could enable TinyUSB built-in debug logging with optional ``LOG=``. LOG=1 will only print out error message, LOG=2 print more information with on-going events. LOG=3 or higher is not used yet. 
+Should you have an issue running example and/or submitting an bug report. You could enable TinyUSB built-in debug logging with optional ``LOG=``. LOG=1 will only print out error message, LOG=2 print more information with on-going events. LOG=3 or higher is not used yet.

 .. code-block::

@ -127,7 +127,7 @@ Should you have an issue running example and/or submitting an bug report. You co
 Logger
 ~~~~~~

-By default log message is printed via on-board UART which is slow and take lots of CPU time comparing to USB speed. If your board support on-board/external debugger, it would be more efficient to use it for logging. There are 2 protocols: 
+By default log message is printed via on-board UART which is slow and take lots of CPU time comparing to USB speed. If your board support on-board/external debugger, it would be more efficient to use it for logging. There are 2 protocols:


 * `LOGGER=rtt`: use `Segger RTT protocol <https://www.segger.com/products/debug-probes/j-link/technology/about-real-time-transfer/>`_
@ -178,12 +178,12 @@ IAR Project Connection files are provided to import TinyUSB stack into your proj


  * Take example of STM32F0:
-  
+
    -  You need `stm32l0xx.h`, `startup_stm32f0xx.s`, `system_stm32f0xx.c`.

    - `STM32L0xx_HAL_Driver` is only needed to run examples, TinyUSB stack itself doesn't rely on MCU's SDKs.

-* Open `Tools -> Configure Custom Argument Variables` (Switch to `Global` tab if you want to do it for all your projects) 
+* Open `Tools -> Configure Custom Argument Variables` (Switch to `Global` tab if you want to do it for all your projects)
   Click `New Group ...`, name it to `TUSB`, Click `Add Variable ...`, name it to `TUSB_DIR`, change it's value to the path of your TinyUSB stack,
   for example `C:\\tinyusb`

--- a/docs/reference/supported.rst
+++ b/docs/reference/supported.rst
@ -61,9 +61,11 @@ Supported MCUs
 |              |         | 55          | ✔      |      | ✔         | lpc_ip3511        |              |
 +--------------+---------+-------------+--------+------+-----------+-------------------+--------------+
 | Raspberry Pi | RP2040                | ✔      | ✔    | ✖         | rp2040, pio_usb   |              |
-+--------------+-----------------------+--------+------+-----------+-------------------+--------------+
-| Renesas      | RX 63N, 65N, 72N      | ✔      | ✔    | ✖         | usba              |              |
-+--------------+-----------------------+--------+------+-----------+-------------------+--------------+
+--------------+-----+-----------------+--------+------+-----------+-------------------+--------------+
+| Renesas      | RX  | 63N, 65N, 72N   | ✔      | ✔    | ✖         | rusb2             |              |
+|              +-----+-----------------+--------+------+-----------+-------------------+--------------+
+|              | RA  | XXX             | ✔      | ✔    |           | rusb2             |              |
+--------------+-----+-----------------+--------+------+-----------+-------------------+--------------+
 | Silabs       | EFM32GG12             | ✔      |      | ✖         | dwc2              |              |
 +--------------+-----------------------+--------+------+-----------+-------------------+--------------+
 | Sony         | CXD56                 | ✔      | ✖    | ✔         | cxd56             |              |
@ -106,6 +108,8 @@ Supported MCUs
 +--------------+-----------------------+--------+------+-----------+-------------------+--------------+
 | ValentyUSB   | eptri                 | ✔      | ✖    | ✖         | eptri             |              |
 +--------------+-----------------------+--------+------+-----------+-------------------+--------------+
+| WCH          | CH32V307              | ✔      |      | ✔         | ch32v307          |              |
+--------------+-----------------------+--------+------+-----------+-------------------+--------------+


 Table Legend
@ -293,8 +297,17 @@ LPC55
 -  `LPCXpresso 55s69 EVK <https://www.nxp.com/design/development-boards/lpcxpresso-boards/lpcxpresso55s69-development-board:LPC55S69-EVK>`__
 -  `MCU-Link <https://www.nxp.com/design/development-boards/lpcxpresso-boards/mcu-link-debug-probe:MCU-LINK>`__

-Renesas RX
----------
+Renesas
+-------
+
+RA
+^^
+
+-  `Evaluation Kit for RA4M1 <https://www.renesas.com/us/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/ek-ra4m1-evaluation-kit-ra4m1-mcu-group>`__
+-  `Evaluation Kit for RA4M3 <https://www.renesas.com/us/en/products/microcontrollers-microprocessors/ra-cortex-m-mcus/ek-ra4m3-evaluation-kit-ra4m3-mcu-group>`__
+
+RX
+^^

 -  `GR-CITRUS <https://www.renesas.com/us/en/products/gadget-renesas/boards/gr-citrus>`__
 -  `Renesas RX65N Target Board <https://www.renesas.com/us/en/products/microcontrollers-microprocessors/rx-32-bit-performance-efficiency-mcus/rtk5rx65n0c00000br-target-board-rx65n>`__
@ -397,3 +410,8 @@ Tomu
 ----

 -  `Fomu <https://www.crowdsupply.com/sutajio-kosagi/fomu>`__
+
+WCH
+---
+
+- `CH32V307V-R1-1v0 <https://lcsc.com/product-detail/Development-Boards-Kits_WCH-Jiangsu-Qin-Heng-CH32V307V-EVT-R1_C2943980.html>`
--- a/examples/device/CMakeLists.txt
+++ b/examples/device/CMakeLists.txt
@ -8,6 +8,7 @@ family_initialize_project(tinyusb_device_examples ${CMAKE_CURRENT_LIST_DIR})
 # family_add_subdirectory will filter what to actually add based on selected FAMILY
 family_add_subdirectory(audio_4_channel_mic)
 family_add_subdirectory(audio_test)
+family_add_subdirectory(audio_test_multi_rate)
 family_add_subdirectory(board_test)
 family_add_subdirectory(cdc_dual_ports)
 family_add_subdirectory(cdc_msc)
--- a/examples/device/audio_4_channel_mic/Makefile
+++ b/examples/device/audio_4_channel_mic/Makefile
@ -1,4 +1,3 @@
-include ../../../tools/top.mk
 include ../../make.mk

 INC += \
--- a/examples/device/audio_4_channel_mic/skip.txt
+++ b/examples/device/audio_4_channel_mic/skip.txt
@ -1,3 +1,3 @@
 mcu:SAMD11
 mcu:SAME5X
-mcu:SAMG
+mcu:SAMG
--- a/examples/device/audio_4_channel_mic/src/main.c
+++ b/examples/device/audio_4_channel_mic/src/main.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2020 Reinhard Panhuber
--- a/examples/device/audio_4_channel_mic/src/plot_audio_samples.py
+++ b/examples/device/audio_4_channel_mic/src/plot_audio_samples.py
@ -31,4 +31,3 @@ if __name__ == '__main__':
    plt.ylabel('Amplitude')
    plt.title('MicNode 4 Channel')
    plt.show()
-    
--- a/examples/device/audio_4_channel_mic/src/usb_descriptors.c
+++ b/examples/device/audio_4_channel_mic/src/usb_descriptors.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/audio_test/CMakeLists.txt
+++ b/examples/device/audio_test/CMakeLists.txt
@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC

 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
+family_configure_device_example(${PROJECT})
--- a/examples/device/audio_test/Makefile
+++ b/examples/device/audio_test/Makefile
@ -1,4 +1,3 @@
-include ../../../tools/top.mk
 include ../../make.mk

 INC += \
--- a/examples/device/audio_test/skip.txt
+++ b/examples/device/audio_test/skip.txt
@ -1,3 +1,3 @@
 mcu:SAMD11
 mcu:SAME5X
-mcu:SAMG
+mcu:SAMG
--- a/examples/device/audio_test/src/main.c
+++ b/examples/device/audio_test/src/main.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2020 Reinhard Panhuber
@ -71,7 +71,7 @@ audio_control_range_2_n_t(1) volumeRng[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX+1];
 audio_control_range_4_n_t(1) sampleFreqRng; 						// Sample frequency range state

 // Audio test data
-uint16_t test_buffer_audio[CFG_TUD_AUDIO_EP_SZ_IN/2];
+uint16_t test_buffer_audio[(CFG_TUD_AUDIO_EP_SZ_IN - 2) / 2];
 uint16_t startVal = 0;

 void led_blinking_task(void);
@ -397,7 +397,7 @@ bool tud_audio_tx_done_pre_load_cb(uint8_t rhport, uint8_t itf, uint8_t ep_in, u
  (void) ep_in;
  (void) cur_alt_setting;

-  tud_audio_write ((uint8_t *)test_buffer_audio, CFG_TUD_AUDIO_EP_SZ_IN);
+  tud_audio_write ((uint8_t *)test_buffer_audio, CFG_TUD_AUDIO_EP_SZ_IN - 2);

  return true;
 }
@ -410,7 +410,7 @@ bool tud_audio_tx_done_post_load_cb(uint8_t rhport, uint16_t n_bytes_copied, uin
  (void) ep_in;
  (void) cur_alt_setting;

-  for (size_t cnt = 0; cnt < CFG_TUD_AUDIO_EP_SZ_IN/2; cnt++)
+  for (size_t cnt = 0; cnt < (CFG_TUD_AUDIO_EP_SZ_IN - 2) / 2; cnt++)
  {
    test_buffer_audio[cnt] = startVal++;
  }
--- a/examples/device/audio_test/src/plot_audio_samples.py
+++ b/examples/device/audio_test/src/plot_audio_samples.py
@ -2,6 +2,7 @@ import sounddevice as sd
 import matplotlib.pyplot as plt
 import numpy as np
 import platform
+import csv

 if __name__ == '__main__':

@ -31,4 +32,6 @@ if __name__ == '__main__':
    plt.ylabel('Amplitude')
    plt.title('MicNode')
    plt.show()
-    
+
+    samples = np.array(myrecording)
+    np.savetxt('Output.csv', samples, delimiter=",", fmt='%s')
--- a/examples/device/audio_test/src/tusb_config.h
+++ b/examples/device/audio_test/src/tusb_config.h
@ -114,7 +114,7 @@ extern "C" {
 #define CFG_TUD_AUDIO_ENABLE_EP_IN                                    1
 #define CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX                    2                                       // Driver gets this info from the descriptors - we define it here to use it to setup the descriptors and to do calculations with it below
 #define CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX                            1                                       // Driver gets this info from the descriptors - we define it here to use it to setup the descriptors and to do calculations with it below - be aware: for different number of channels you need another descriptor!
-#define CFG_TUD_AUDIO_EP_SZ_IN                                        48 * CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX * CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX      // 48 Samples (48 kHz) x 2 Bytes/Sample x 1 Channel
+#define CFG_TUD_AUDIO_EP_SZ_IN                                        (48 + 1) * CFG_TUD_AUDIO_FUNC_1_N_BYTES_PER_SAMPLE_TX * CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX      // 48 Samples (48 kHz) x 2 Bytes/Sample x CFG_TUD_AUDIO_N_CHANNELS_TX Channels - One extra sample is needed for asynchronous transfer adjustment, see feedback EP
 #define CFG_TUD_AUDIO_FUNC_1_EP_IN_SZ_MAX                             CFG_TUD_AUDIO_EP_SZ_IN                  // Maximum EP IN size for all AS alternate settings used
 #define CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ                          CFG_TUD_AUDIO_EP_SZ_IN + 1

--- a/examples/device/audio_test/src/usb_descriptors.c
+++ b/examples/device/audio_test/src/usb_descriptors.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/audio_test_multi_rate/CMakeLists.txt
+++ b/examples/device/audio_test_multi_rate/CMakeLists.txt
@ -0,0 +1,28 @@
+cmake_minimum_required(VERSION 3.5)
+
+include(${CMAKE_CURRENT_SOURCE_DIR}/../../../hw/bsp/family_support.cmake)
+
+# gets PROJECT name for the example (e.g. <BOARD>-<DIR_NAME>)
+family_get_project_name(PROJECT ${CMAKE_CURRENT_LIST_DIR})
+
+project(${PROJECT})
+
+# Checks this example is valid for the family and initializes the project
+family_initialize_project(${PROJECT} ${CMAKE_CURRENT_LIST_DIR})
+
+add_executable(${PROJECT})
+
+# Example source
+target_sources(${PROJECT} PUBLIC
+  ${CMAKE_CURRENT_SOURCE_DIR}/src/main.c
+  ${CMAKE_CURRENT_SOURCE_DIR}/src/usb_descriptors.c
+)
+
+# Example include
+target_include_directories(${PROJECT} PUBLIC
+  ${CMAKE_CURRENT_SOURCE_DIR}/src
+)
+
+# Configure compilation flags and libraries for the example... see the corresponding function
+# in hw/bsp/FAMILY/family.cmake for details.
+family_configure_device_example(${PROJECT})
--- a/examples/device/audio_test_multi_rate/Makefile
+++ b/examples/device/audio_test_multi_rate/Makefile
@ -0,0 +1,11 @@
+include ../../make.mk
+
+INC += \
+  src \
+  $(TOP)/hw \
+
+# Example source
+EXAMPLE_SOURCE += $(wildcard src/*.c)
+SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE))
+
+include ../../rules.mk
--- a/examples/device/audio_test_multi_rate/skip.txt
+++ b/examples/device/audio_test_multi_rate/skip.txt
@ -0,0 +1,3 @@
+mcu:SAMD11
+mcu:SAME5X
+mcu:SAMG
--- a/examples/device/audio_test_multi_rate/src/main.c
+++ b/examples/device/audio_test_multi_rate/src/main.c
@ -0,0 +1,521 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2020 Reinhard Panhuber
+ * Copyright (c) 2022 HiFiPhile
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
+/* plot_audio_samples.py requires following modules:
+ * $ sudo apt install libportaudio
+ * $ pip3 install sounddevice matplotlib
+ *
+ * Then run
+ * $ python3 plot_audio_samples.py
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "bsp/board.h"
+#include "tusb.h"
+#include "usb_descriptors.h"
+
+//--------------------------------------------------------------------+
+// MACRO CONSTANT TYPEDEF PROTYPES
+//--------------------------------------------------------------------+
+
+/* Blink pattern
+ * - 250 ms  : device not mounted
+ * - 1000 ms : device mounted
+ * - 2500 ms : device is suspended
+ */
+enum  {
+  BLINK_NOT_MOUNTED = 250,
+  BLINK_MOUNTED = 1000,
+  BLINK_SUSPENDED = 2500,
+};
+
+static uint32_t blink_interval_ms = BLINK_NOT_MOUNTED;
+
+// Audio controls
+// Current states
+bool mute[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX + 1]; 				          // +1 for master channel 0
+uint16_t volume[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX + 1]; 					// +1 for master channel 0
+uint32_t sampFreq;
+uint8_t bytesPerSample;
+uint8_t clkValid;
+
+// Range states
+// List of supported sample rates
+static const uint32_t sampleRatesList[] =
+{
+    32000, 48000, 96000
+};
+
+#define N_sampleRates  TU_ARRAY_SIZE(sampleRatesList)
+
+// Bytes per format of every Alt settings
+static const uint8_t bytesPerSampleAltList[CFG_TUD_AUDIO_FUNC_1_N_FORMATS] =
+{
+    CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_TX,
+    CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_TX,
+};
+
+audio_control_range_2_n_t(1) volumeRng[CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX+1]; 			// Volume range state
+
+
+// Audio test data
+CFG_TUSB_MEM_ALIGN uint8_t test_buffer_audio[CFG_TUD_AUDIO_FUNC_1_EP_IN_SZ_MAX];
+uint16_t startVal = 0;
+
+void led_blinking_task(void);
+void audio_task(void);
+
+/*------------- MAIN -------------*/
+int main(void)
+{
+  board_init();
+
+  // init device stack on configured roothub port
+  tud_init(BOARD_TUD_RHPORT);
+
+  // Init values
+  sampFreq = sampleRatesList[0];
+  clkValid = 1;
+
+  while (1)
+  {
+    tud_task(); // tinyusb device task
+    led_blinking_task();
+    audio_task();
+  }
+
+
+  return 0;
+}
+
+//--------------------------------------------------------------------+
+// Device callbacks
+//--------------------------------------------------------------------+
+
+// Invoked when device is mounted
+void tud_mount_cb(void)
+{
+  blink_interval_ms = BLINK_MOUNTED;
+}
+
+// Invoked when device is unmounted
+void tud_umount_cb(void)
+{
+  blink_interval_ms = BLINK_NOT_MOUNTED;
+}
+
+// Invoked when usb bus is suspended
+// remote_wakeup_en : if host allow us  to perform remote wakeup
+// Within 7ms, device must draw an average of current less than 2.5 mA from bus
+void tud_suspend_cb(bool remote_wakeup_en)
+{
+  (void) remote_wakeup_en;
+  blink_interval_ms = BLINK_SUSPENDED;
+}
+
+// Invoked when usb bus is resumed
+void tud_resume_cb(void)
+{
+  blink_interval_ms = BLINK_MOUNTED;
+}
+
+//--------------------------------------------------------------------+
+// AUDIO Task
+//--------------------------------------------------------------------+
+
+void audio_task(void)
+{
+  // Yet to be filled - e.g. put meas data into TX FIFOs etc.
+  // asm("nop");
+}
+
+//--------------------------------------------------------------------+
+// Application Callback API Implementations
+//--------------------------------------------------------------------+
+
+// Invoked when set interface is called, typically on start/stop streaming or format change
+bool tud_audio_set_itf_cb(uint8_t rhport, tusb_control_request_t const * p_request)
+{
+  (void)rhport;
+  //uint8_t const itf = tu_u16_low(tu_le16toh(p_request->wIndex));
+  uint8_t const alt = tu_u16_low(tu_le16toh(p_request->wValue));
+
+  // Clear buffer when streaming format is changed
+  if(alt != 0)
+  {
+    bytesPerSample = bytesPerSampleAltList[alt-1];
+  }
+  return true;
+}
+
+// Invoked when audio class specific set request received for an EP
+bool tud_audio_set_req_ep_cb(uint8_t rhport, tusb_control_request_t const * p_request, uint8_t *pBuff)
+{
+  (void) rhport;
+  (void) pBuff;
+
+  // We do not support any set range requests here, only current value requests
+  TU_VERIFY(p_request->bRequest == AUDIO_CS_REQ_CUR);
+
+  // Page 91 in UAC2 specification
+  uint8_t channelNum = TU_U16_LOW(p_request->wValue);
+  uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue);
+  uint8_t ep = TU_U16_LOW(p_request->wIndex);
+
+  (void) channelNum; (void) ctrlSel; (void) ep;
+
+  return false; 	// Yet not implemented
+}
+
+// Invoked when audio class specific set request received for an interface
+bool tud_audio_set_req_itf_cb(uint8_t rhport, tusb_control_request_t const * p_request, uint8_t *pBuff)
+{
+  (void) rhport;
+  (void) pBuff;
+
+  // We do not support any set range requests here, only current value requests
+  TU_VERIFY(p_request->bRequest == AUDIO_CS_REQ_CUR);
+
+  // Page 91 in UAC2 specification
+  uint8_t channelNum = TU_U16_LOW(p_request->wValue);
+  uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue);
+  uint8_t itf = TU_U16_LOW(p_request->wIndex);
+
+  (void) channelNum; (void) ctrlSel; (void) itf;
+
+  return false; 	// Yet not implemented
+}
+
+// Invoked when audio class specific set request received for an entity
+bool tud_audio_set_req_entity_cb(uint8_t rhport, tusb_control_request_t const * p_request, uint8_t *pBuff)
+{
+  (void) rhport;
+
+  // Page 91 in UAC2 specification
+  uint8_t channelNum = TU_U16_LOW(p_request->wValue);
+  uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue);
+  uint8_t itf = TU_U16_LOW(p_request->wIndex);
+  uint8_t entityID = TU_U16_HIGH(p_request->wIndex);
+
+  (void) itf;
+
+  // We do not support any set range requests here, only current value requests
+  TU_VERIFY(p_request->bRequest == AUDIO_CS_REQ_CUR);
+
+  // If request is for our feature unit
+  if ( entityID == UAC2_ENTITY_FEATURE_UNIT )
+  {
+    switch ( ctrlSel )
+    {
+      case AUDIO_FU_CTRL_MUTE:
+        // Request uses format layout 1
+        TU_VERIFY(p_request->wLength == sizeof(audio_control_cur_1_t));
+
+        mute[channelNum] = ((audio_control_cur_1_t*) pBuff)->bCur;
+
+        TU_LOG2("    Set Mute: %d of channel: %u\r\n", mute[channelNum], channelNum);
+      return true;
+
+      case AUDIO_FU_CTRL_VOLUME:
+        // Request uses format layout 2
+        TU_VERIFY(p_request->wLength == sizeof(audio_control_cur_2_t));
+
+        volume[channelNum] = (uint16_t) ((audio_control_cur_2_t*) pBuff)->bCur;
+
+        TU_LOG2("    Set Volume: %d dB of channel: %u\r\n", volume[channelNum], channelNum);
+      return true;
+
+        // Unknown/Unsupported control
+      default:
+        TU_BREAKPOINT();
+      return false;
+    }
+  }
+
+  // Clock Source unit
+  if ( entityID == UAC2_ENTITY_CLOCK )
+  {
+    switch ( ctrlSel )
+    {
+      case AUDIO_CS_CTRL_SAM_FREQ:
+        TU_VERIFY(p_request->wLength == sizeof(audio_control_cur_4_t));
+
+        sampFreq = (uint32_t)((audio_control_cur_4_t *)pBuff)->bCur;
+
+        TU_LOG2("Clock set current freq: %d\r\n", sampFreq);
+
+        return true;
+      break;
+
+      // Unknown/Unsupported control
+      default:
+        TU_BREAKPOINT();
+        return false;
+    }
+  }
+
+  return false;    // Yet not implemented
+}
+
+// Invoked when audio class specific get request received for an EP
+bool tud_audio_get_req_ep_cb(uint8_t rhport, tusb_control_request_t const * p_request)
+{
+  (void) rhport;
+
+  // Page 91 in UAC2 specification
+  uint8_t channelNum = TU_U16_LOW(p_request->wValue);
+  uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue);
+  uint8_t ep = TU_U16_LOW(p_request->wIndex);
+
+  (void) channelNum; (void) ctrlSel; (void) ep;
+
+  //	return tud_control_xfer(rhport, p_request, &tmp, 1);
+
+  return false; 	// Yet not implemented
+}
+
+// Invoked when audio class specific get request received for an interface
+bool tud_audio_get_req_itf_cb(uint8_t rhport, tusb_control_request_t const * p_request)
+{
+  (void) rhport;
+
+  // Page 91 in UAC2 specification
+  uint8_t channelNum = TU_U16_LOW(p_request->wValue);
+  uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue);
+  uint8_t itf = TU_U16_LOW(p_request->wIndex);
+
+  (void) channelNum; (void) ctrlSel; (void) itf;
+
+  return false; 	// Yet not implemented
+}
+
+// Invoked when audio class specific get request received for an entity
+bool tud_audio_get_req_entity_cb(uint8_t rhport, tusb_control_request_t const * p_request)
+{
+  (void) rhport;
+
+  // Page 91 in UAC2 specification
+  uint8_t channelNum = TU_U16_LOW(p_request->wValue);
+  uint8_t ctrlSel = TU_U16_HIGH(p_request->wValue);
+  // uint8_t itf = TU_U16_LOW(p_request->wIndex); 			// Since we have only one audio function implemented, we do not need the itf value
+  uint8_t entityID = TU_U16_HIGH(p_request->wIndex);
+
+  // Input terminal (Microphone input)
+  if (entityID == UAC2_ENTITY_INPUT_TERMINAL)
+  {
+    switch ( ctrlSel )
+    {
+      case AUDIO_TE_CTRL_CONNECTOR:
+      {
+        // The terminal connector control only has a get request with only the CUR attribute.
+        audio_desc_channel_cluster_t ret;
+
+        // Those are dummy values for now
+        ret.bNrChannels = 1;
+        ret.bmChannelConfig = 0;
+        ret.iChannelNames = 0;
+
+        TU_LOG2("    Get terminal connector\r\n");
+
+        return tud_audio_buffer_and_schedule_control_xfer(rhport, p_request, (void*) &ret, sizeof(ret));
+      }
+      break;
+
+        // Unknown/Unsupported control selector
+      default:
+        TU_BREAKPOINT();
+        return false;
+    }
+  }
+
+  // Feature unit
+  if (entityID == UAC2_ENTITY_FEATURE_UNIT)
+  {
+    switch ( ctrlSel )
+    {
+      case AUDIO_FU_CTRL_MUTE:
+        // Audio control mute cur parameter block consists of only one byte - we thus can send it right away
+        // There does not exist a range parameter block for mute
+        TU_LOG2("    Get Mute of channel: %u\r\n", channelNum);
+        return tud_control_xfer(rhport, p_request, &mute[channelNum], 1);
+
+      case AUDIO_FU_CTRL_VOLUME:
+        switch ( p_request->bRequest )
+        {
+          case AUDIO_CS_REQ_CUR:
+            TU_LOG2("    Get Volume of channel: %u\r\n", channelNum);
+            return tud_control_xfer(rhport, p_request, &volume[channelNum], sizeof(volume[channelNum]));
+
+          case AUDIO_CS_REQ_RANGE:
+            TU_LOG2("    Get Volume range of channel: %u\r\n", channelNum);
+
+            // Copy values - only for testing - better is version below
+            audio_control_range_2_n_t(1)
+            ret;
+
+            ret.wNumSubRanges = 1;
+            ret.subrange[0].bMin = -90;    // -90 dB
+            ret.subrange[0].bMax = 30;		// +30 dB
+            ret.subrange[0].bRes = 1; 		// 1 dB steps
+
+            return tud_audio_buffer_and_schedule_control_xfer(rhport, p_request, (void*) &ret, sizeof(ret));
+
+            // Unknown/Unsupported control
+          default:
+            TU_BREAKPOINT();
+            return false;
+        }
+      break;
+
+        // Unknown/Unsupported control
+      default:
+        TU_BREAKPOINT();
+        return false;
+    }
+  }
+
+  // Clock Source unit
+  if ( entityID == UAC2_ENTITY_CLOCK )
+  {
+    switch ( ctrlSel )
+    {
+      case AUDIO_CS_CTRL_SAM_FREQ:
+        // channelNum is always zero in this case
+        switch ( p_request->bRequest )
+        {
+          case AUDIO_CS_REQ_CUR:
+            TU_LOG2("    Get Sample Freq.\r\n");
+            return tud_control_xfer(rhport, p_request, &sampFreq, sizeof(sampFreq));
+
+          case AUDIO_CS_REQ_RANGE:
+          {
+            TU_LOG2("    Get Sample Freq. range\r\n");
+            audio_control_range_4_n_t(N_sampleRates) rangef =
+            {
+                .wNumSubRanges = tu_htole16(N_sampleRates)
+            };
+            TU_LOG1("Clock get %d freq ranges\r\n", N_sampleRates);
+            for(uint8_t i = 0; i < N_sampleRates; i++)
+            {
+                rangef.subrange[i].bMin = (int32_t)sampleRatesList[i];
+                rangef.subrange[i].bMax = (int32_t)sampleRatesList[i];
+                rangef.subrange[i].bRes = 0;
+                TU_LOG1("Range %d (%d, %d, %d)\r\n", i, (int)rangef.subrange[i].bMin, (int)rangef.subrange[i].bMax, (int)rangef.subrange[i].bRes);
+            }
+            return tud_audio_buffer_and_schedule_control_xfer(rhport, p_request, &rangef, sizeof(rangef));
+          }
+           // Unknown/Unsupported control
+          default:
+            TU_BREAKPOINT();
+            return false;
+        }
+      break;
+
+      case AUDIO_CS_CTRL_CLK_VALID:
+        // Only cur attribute exists for this request
+        TU_LOG2("    Get Sample Freq. valid\r\n");
+        return tud_control_xfer(rhport, p_request, &clkValid, sizeof(clkValid));
+
+      // Unknown/Unsupported control
+      default:
+        TU_BREAKPOINT();
+        return false;
+    }
+  }
+
+  TU_LOG2("  Unsupported entity: %d\r\n", entityID);
+  return false; 	// Yet not implemented
+}
+
+bool tud_audio_tx_done_pre_load_cb(uint8_t rhport, uint8_t itf, uint8_t ep_in, uint8_t cur_alt_setting)
+{
+  (void) rhport;
+  (void) itf;
+  (void) ep_in;
+  (void) cur_alt_setting;
+
+  tud_audio_write((uint8_t *)test_buffer_audio, (uint16_t)(sampFreq / (TUD_OPT_HIGH_SPEED ? 8000 : 1000) * bytesPerSample));
+
+  return true;
+}
+
+bool tud_audio_tx_done_post_load_cb(uint8_t rhport, uint16_t n_bytes_copied, uint8_t itf, uint8_t ep_in, uint8_t cur_alt_setting)
+{
+  (void) rhport;
+  (void) n_bytes_copied;
+  (void) itf;
+  (void) ep_in;
+  (void) cur_alt_setting;
+
+  // 16bit
+  if(bytesPerSample == 2)
+  {
+    uint16_t* pData_16 = (uint16_t*)((void*)test_buffer_audio);
+    for (size_t cnt = 0; cnt < sampFreq / (TUD_OPT_HIGH_SPEED ? 8000 : 1000); cnt++)
+    {
+      pData_16[cnt] = startVal++;
+    }
+  }
+  // 24bit in 32bit slot
+  else if(bytesPerSample == 4)
+  {
+    uint32_t* pData_32 = (uint32_t*)((void*)test_buffer_audio);
+    for (size_t cnt = 0; cnt < sampFreq / (TUD_OPT_HIGH_SPEED ? 8000 : 1000); cnt++)
+    {
+      pData_32[cnt] = (uint32_t)startVal++ << 16U;
+    }
+  }
+
+  return true;
+}
+
+bool tud_audio_set_itf_close_EP_cb(uint8_t rhport, tusb_control_request_t const * p_request)
+{
+  (void) rhport;
+  (void) p_request;
+  startVal = 0;
+
+  return true;
+}
+
+//--------------------------------------------------------------------+
+// BLINKING TASK
+//--------------------------------------------------------------------+
+void led_blinking_task(void)
+{
+  static uint32_t start_ms = 0;
+  static bool led_state = false;
+
+  // Blink every interval ms
+  if ( board_millis() - start_ms < blink_interval_ms) return; // not enough time
+  start_ms += blink_interval_ms;
+
+  board_led_write(led_state);
+  led_state = 1 - led_state; // toggle
+}
--- a/examples/device/audio_test_multi_rate/src/plot_audio_samples.py
+++ b/examples/device/audio_test_multi_rate/src/plot_audio_samples.py
@ -0,0 +1,37 @@
+import sounddevice as sd
+import matplotlib.pyplot as plt
+import numpy as np
+import platform
+import csv
+
+if __name__ == '__main__':
+
+    # If you got "ValueError: No input device matching", that is because your PC name example device
+    # differently from tested list below. Uncomment the next line to see full list and try to pick correct one
+    # print(sd.query_devices())
+
+    fs = 96000           # Sample rate
+    duration = 100e-3    # Duration of recording
+
+    if platform.system() == 'Windows':
+        # MME is needed since there are more than one MicNode device APIs (at least in Windows)
+        device = 'Microphone (MicNode) MME'
+    elif platform.system() == 'Darwin':
+        device = 'MicNode'
+    else:
+        device ='default'
+
+    myrecording = sd.rec(int(duration * fs), samplerate=fs, channels=1, dtype='int16', device=device)
+    print('Waiting...')
+    sd.wait()  # Wait until recording is finished
+    print('Done!')
+
+    time = np.arange(0, duration, 1 / fs)  # time vector
+    plt.plot(time, myrecording)
+    plt.xlabel('Time [s]')
+    plt.ylabel('Amplitude')
+    plt.title('MicNode')
+    plt.show()
+
+    samples = np.array(myrecording)
+    np.savetxt('Output.csv', samples, delimiter=",", fmt='%s')
--- a/examples/device/audio_test_multi_rate/src/tusb_config.h
+++ b/examples/device/audio_test_multi_rate/src/tusb_config.h
@ -0,0 +1,141 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
+#ifndef _TUSB_CONFIG_H_
+#define _TUSB_CONFIG_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "usb_descriptors.h"
+
+//--------------------------------------------------------------------+
+// Board Specific Configuration
+//--------------------------------------------------------------------+
+
+// RHPort number used for device can be defined by board.mk, default to port 0
+#ifndef BOARD_TUD_RHPORT
+#define BOARD_TUD_RHPORT      0
+#endif
+
+// RHPort max operational speed can defined by board.mk
+#ifndef BOARD_TUD_MAX_SPEED
+#define BOARD_TUD_MAX_SPEED   OPT_MODE_DEFAULT_SPEED
+#endif
+
+//--------------------------------------------------------------------
+// COMMON CONFIGURATION
+//--------------------------------------------------------------------
+
+// defined by compiler flags for flexibility
+#ifndef CFG_TUSB_MCU
+#error CFG_TUSB_MCU must be defined
+#endif
+
+#ifndef CFG_TUSB_OS
+#define CFG_TUSB_OS                 OPT_OS_NONE
+#endif
+
+#ifndef CFG_TUSB_DEBUG
+#define CFG_TUSB_DEBUG              0
+#endif
+
+// Enable Device stack
+#define CFG_TUD_ENABLED       1
+
+// Default is max speed that hardware controller could support with on-chip PHY
+#define CFG_TUD_MAX_SPEED     BOARD_TUD_MAX_SPEED
+
+// CFG_TUSB_DEBUG is defined by compiler in DEBUG build
+// #define CFG_TUSB_DEBUG           0
+
+/* USB DMA on some MCUs can only access a specific SRAM region with restriction on alignment.
+ * Tinyusb use follows macros to declare transferring memory so that they can be put
+ * into those specific section.
+ * e.g
+ * - CFG_TUSB_MEM SECTION : __attribute__ (( section(".usb_ram") ))
+ * - CFG_TUSB_MEM_ALIGN   : __attribute__ ((aligned(4)))
+ */
+#ifndef CFG_TUSB_MEM_SECTION
+#define CFG_TUSB_MEM_SECTION
+#endif
+
+#ifndef CFG_TUSB_MEM_ALIGN
+#define CFG_TUSB_MEM_ALIGN          __attribute__ ((aligned(4)))
+#endif
+
+//--------------------------------------------------------------------
+// DEVICE CONFIGURATION
+//--------------------------------------------------------------------
+
+#ifndef CFG_TUD_ENDPOINT0_SIZE
+#define CFG_TUD_ENDPOINT0_SIZE    64
+#endif
+
+//------------- CLASS -------------//
+#define CFG_TUD_AUDIO             1
+#define CFG_TUD_CDC               0
+#define CFG_TUD_MSC               0
+#define CFG_TUD_HID               0
+#define CFG_TUD_MIDI              0
+#define CFG_TUD_VENDOR            0
+
+//--------------------------------------------------------------------
+// AUDIO CLASS DRIVER CONFIGURATION
+//--------------------------------------------------------------------
+
+#define CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE                         96000
+
+// How many formats are used, need to adjust USB descriptor if changed
+#define CFG_TUD_AUDIO_FUNC_1_N_FORMATS                               2
+
+// 16bit in 16bit slots
+#define CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_TX          2
+#define CFG_TUD_AUDIO_FUNC_1_FORMAT_1_RESOLUTION_RX                  16
+
+// 24bit in 32bit slots
+#define CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_TX          4
+#define CFG_TUD_AUDIO_FUNC_1_FORMAT_2_RESOLUTION_RX                  24
+
+// Have a look into audio_device.h for all configurations
+
+#define CFG_TUD_AUDIO_FUNC_1_DESC_LEN                                 TUD_AUDIO_MIC_ONE_CH_2_FORMAT_DESC_LEN
+#define CFG_TUD_AUDIO_FUNC_1_N_AS_INT                                 1                                       // Number of Standard AS Interface Descriptors (4.9.1) defined per audio function - this is required to be able to remember the current alternate settings of these interfaces - We restrict us here to have a constant number for all audio functions (which means this has to be the maximum number of AS interfaces an audio function has and a second audio function with less AS interfaces just wastes a few bytes)
+#define CFG_TUD_AUDIO_FUNC_1_CTRL_BUF_SZ                              64                                      // Size of control request buffer
+
+#define CFG_TUD_AUDIO_ENABLE_EP_IN                                    1
+#define CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX                            1                                       // Driver gets this info from the descriptors - we define it here to use it to setup the descriptors and to do calculations with it below - be aware: for different number of channels you need another descriptor!
+
+#define CFG_TUD_AUDIO_FUNC_1_FORMAT_1_EP_SZ_IN                        TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX)
+#define CFG_TUD_AUDIO_FUNC_1_FORMAT_2_EP_SZ_IN                        TUD_AUDIO_EP_SIZE(CFG_TUD_AUDIO_FUNC_1_MAX_SAMPLE_RATE, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_N_CHANNELS_TX)
+
+#define CFG_TUD_AUDIO_FUNC_1_EP_IN_SZ_MAX                             TU_MAX(CFG_TUD_AUDIO_FUNC_1_FORMAT_1_EP_SZ_IN, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_EP_SZ_IN)                  // Maximum EP IN size for all AS alternate settings used
+#define CFG_TUD_AUDIO_FUNC_1_EP_IN_SW_BUF_SZ                          CFG_TUD_AUDIO_FUNC_1_EP_IN_SZ_MAX
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _TUSB_CONFIG_H_ */
--- a/examples/device/audio_test_multi_rate/src/usb_descriptors.c
+++ b/examples/device/audio_test_multi_rate/src/usb_descriptors.c
@ -0,0 +1,169 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ * Copyright (c) 2022 HiFiPhile
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
+#include "tusb.h"
+#include "usb_descriptors.h"
+
+/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
+ * Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC.
+ *
+ * Auto ProductID layout's Bitmap:
+ *   [MSB]     AUDIO | MIDI | HID | MSC | CDC          [LSB]
+ */
+#define _PID_MAP(itf, n)  ( (CFG_TUD_##itf) << (n) )
+#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
+    _PID_MAP(MIDI, 3) | _PID_MAP(AUDIO, 4) | _PID_MAP(VENDOR, 5) )
+
+//--------------------------------------------------------------------+
+// Device Descriptors
+//--------------------------------------------------------------------+
+tusb_desc_device_t const desc_device =
+{
+    .bLength            = sizeof(tusb_desc_device_t),
+    .bDescriptorType    = TUSB_DESC_DEVICE,
+    .bcdUSB             = 0x0200,
+
+    // Use Interface Association Descriptor (IAD) for CDC
+    // As required by USB Specs IAD's subclass must be common class (2) and protocol must be IAD (1)
+    .bDeviceClass       = TUSB_CLASS_MISC,
+    .bDeviceSubClass    = MISC_SUBCLASS_COMMON,
+    .bDeviceProtocol    = MISC_PROTOCOL_IAD,
+    .bMaxPacketSize0    = CFG_TUD_ENDPOINT0_SIZE,
+
+    .idVendor           = 0xCafe,
+    .idProduct          = USB_PID,
+    .bcdDevice          = 0x0100,
+
+    .iManufacturer      = 0x01,
+    .iProduct           = 0x02,
+    .iSerialNumber      = 0x03,
+
+    .bNumConfigurations = 0x01
+};
+
+// Invoked when received GET DEVICE DESCRIPTOR
+// Application return pointer to descriptor
+uint8_t const * tud_descriptor_device_cb(void)
+{
+  return (uint8_t const *) &desc_device;
+}
+
+//--------------------------------------------------------------------+
+// Configuration Descriptor
+//--------------------------------------------------------------------+
+enum
+{
+  ITF_NUM_AUDIO_CONTROL = 0,
+  ITF_NUM_AUDIO_STREAMING,
+  ITF_NUM_TOTAL
+};
+
+#define CONFIG_TOTAL_LEN    	(TUD_CONFIG_DESC_LEN + CFG_TUD_AUDIO * TUD_AUDIO_MIC_ONE_CH_2_FORMAT_DESC_LEN)
+
+#if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX
+  // LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
+  // 0 control, 1 In, 2 Bulk, 3 Iso, 4 In etc ...
+  #define EPNUM_AUDIO   0x03
+
+#elif TU_CHECK_MCU(OPT_MCU_NRF5X)
+  // nRF5x ISO can only be endpoint 8
+  #define EPNUM_AUDIO   0x08
+
+#else
+  #define EPNUM_AUDIO   0x01
+#endif
+
+uint8_t const desc_configuration[] =
+{
+    // Interface count, string index, total length, attribute, power in mA
+    TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100),
+
+    // Interface number, string index, EP Out & EP In address, EP size
+    TUD_AUDIO_MIC_ONE_CH_2_FORMAT_DESCRIPTOR(/*_itfnum*/ ITF_NUM_AUDIO_CONTROL, /*_stridx*/ 0, /*_epin*/ 0x80 | EPNUM_AUDIO)
+};
+
+TU_VERIFY_STATIC(sizeof(desc_configuration) == CONFIG_TOTAL_LEN, "Incorrect size");
+
+// Invoked when received GET CONFIGURATION DESCRIPTOR
+// Application return pointer to descriptor
+// Descriptor contents must exist long enough for transfer to complete
+uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
+{
+  (void) index; // for multiple configurations
+  return desc_configuration;
+}
+
+//--------------------------------------------------------------------+
+// String Descriptors
+//--------------------------------------------------------------------+
+
+// array of pointer to string descriptors
+char const* string_desc_arr [] =
+{
+    (const char[]) { 0x09, 0x04 }, 	// 0: is supported language is English (0x0409)
+    "PaniRCorp",                   	// 1: Manufacturer
+    "MicNode",              		// 2: Product
+    "123456",                      	// 3: Serials, should use chip ID
+    "UAC2",                 	 	// 4: Audio Interface
+};
+
+static uint16_t _desc_str[32];
+
+// Invoked when received GET STRING DESCRIPTOR request
+// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
+uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
+{
+  (void) langid;
+
+  uint8_t chr_count;
+
+  if ( index == 0)
+  {
+    memcpy(&_desc_str[1], string_desc_arr[0], 2);
+    chr_count = 1;
+  }else
+  {
+    // Convert ASCII string into UTF-16
+
+    if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return NULL;
+
+    const char* str = string_desc_arr[index];
+
+    // Cap at max char
+    chr_count = (uint8_t) strlen(str);
+    if ( chr_count > 31 ) chr_count = 31;
+
+    for(uint8_t i=0; i<chr_count; i++)
+    {
+      _desc_str[1+i] = str[i];
+    }
+  }
+
+  // first byte is length (including header), second byte is string type
+  _desc_str[0] = (uint16_t) ((TUSB_DESC_STRING << 8 ) | (2*chr_count + 2));
+
+  return _desc_str;
+}
--- a/examples/device/audio_test_multi_rate/src/usb_descriptors.h
+++ b/examples/device/audio_test_multi_rate/src/usb_descriptors.h
@ -0,0 +1,102 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2022 HiFiPhile
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ */
+
+#ifndef _USB_DESCRIPTORS_H_
+#define _USB_DESCRIPTORS_H_
+
+// #include "tusb.h"
+
+// Unit numbers are arbitrary selected
+#define UAC2_ENTITY_CLOCK                   0x04
+#define UAC2_ENTITY_INPUT_TERMINAL          0x01
+#define UAC2_ENTITY_OUTPUT_TERMINAL         0x03
+#define UAC2_ENTITY_FEATURE_UNIT            0x02
+
+
+#define TUD_AUDIO_MIC_ONE_CH_2_FORMAT_DESC_LEN (TUD_AUDIO_DESC_IAD_LEN\
+    + TUD_AUDIO_DESC_STD_AC_LEN\
+    + TUD_AUDIO_DESC_CS_AC_LEN\
+    + TUD_AUDIO_DESC_CLK_SRC_LEN\
+    + TUD_AUDIO_DESC_INPUT_TERM_LEN\
+    + TUD_AUDIO_DESC_OUTPUT_TERM_LEN\
+    + TUD_AUDIO_DESC_FEATURE_UNIT_ONE_CHANNEL_LEN\
+    /* Interface 1, Alternate 0 */\
+    + TUD_AUDIO_DESC_STD_AS_INT_LEN\
+    /* Interface 1, Alternate 1 */\
+    + TUD_AUDIO_DESC_STD_AS_INT_LEN\
+    + TUD_AUDIO_DESC_CS_AS_INT_LEN\
+    + TUD_AUDIO_DESC_TYPE_I_FORMAT_LEN\
+    + TUD_AUDIO_DESC_STD_AS_ISO_EP_LEN\
+    + TUD_AUDIO_DESC_CS_AS_ISO_EP_LEN\
+    /* Interface 1, Alternate 2 */\
+    + TUD_AUDIO_DESC_STD_AS_INT_LEN\
+    + TUD_AUDIO_DESC_CS_AS_INT_LEN\
+    + TUD_AUDIO_DESC_TYPE_I_FORMAT_LEN\
+    + TUD_AUDIO_DESC_STD_AS_ISO_EP_LEN\
+    + TUD_AUDIO_DESC_CS_AS_ISO_EP_LEN)
+
+
+#define TUD_AUDIO_MIC_ONE_CH_2_FORMAT_DESCRIPTOR(_itfnum, _stridx, _epin) \
+  /* Standard Interface Association Descriptor (IAD) */\
+  TUD_AUDIO_DESC_IAD(/*_firstitfs*/ _itfnum, /*_nitfs*/ 0x02, /*_stridx*/ 0x00),\
+  /* Standard AC Interface Descriptor(4.7.1) */\
+  TUD_AUDIO_DESC_STD_AC(/*_itfnum*/ _itfnum, /*_nEPs*/ 0x00, /*_stridx*/ _stridx),\
+  /* Class-Specific AC Interface Header Descriptor(4.7.2) */\
+  TUD_AUDIO_DESC_CS_AC(/*_bcdADC*/ 0x0200, /*_category*/ AUDIO_FUNC_MICROPHONE, /*_totallen*/ TUD_AUDIO_DESC_CLK_SRC_LEN+TUD_AUDIO_DESC_INPUT_TERM_LEN+TUD_AUDIO_DESC_OUTPUT_TERM_LEN+TUD_AUDIO_DESC_FEATURE_UNIT_ONE_CHANNEL_LEN, /*_ctrl*/ AUDIO_CS_AS_INTERFACE_CTRL_LATENCY_POS),\
+  /* Clock Source Descriptor(4.7.2.1) */\
+  TUD_AUDIO_DESC_CLK_SRC(/*_clkid*/ UAC2_ENTITY_CLOCK, /*_attr*/ AUDIO_CLOCK_SOURCE_ATT_INT_PRO_CLK, /*_ctrl*/ AUDIO_CTRL_RW << AUDIO_CLOCK_SOURCE_CTRL_CLK_FRQ_POS | AUDIO_CTRL_R << AUDIO_CLOCK_SOURCE_CTRL_CLK_VAL_POS, /*_assocTerm*/ 0x01,  /*_stridx*/ 0x00),\
+  /* Input Terminal Descriptor(4.7.2.4) */\
+  TUD_AUDIO_DESC_INPUT_TERM(/*_termid*/ UAC2_ENTITY_INPUT_TERMINAL, /*_termtype*/ AUDIO_TERM_TYPE_IN_GENERIC_MIC, /*_assocTerm*/ UAC2_ENTITY_OUTPUT_TERMINAL, /*_clkid*/ UAC2_ENTITY_CLOCK, /*_nchannelslogical*/ 0x01, /*_channelcfg*/ AUDIO_CHANNEL_CONFIG_NON_PREDEFINED, /*_idxchannelnames*/ 0x00, /*_ctrl*/ AUDIO_CTRL_R << AUDIO_IN_TERM_CTRL_CONNECTOR_POS, /*_stridx*/ 0x00),\
+  /* Output Terminal Descriptor(4.7.2.5) */\
+  TUD_AUDIO_DESC_OUTPUT_TERM(/*_termid*/ UAC2_ENTITY_OUTPUT_TERMINAL, /*_termtype*/ AUDIO_TERM_TYPE_USB_STREAMING, /*_assocTerm*/ UAC2_ENTITY_INPUT_TERMINAL, /*_srcid*/ UAC2_ENTITY_FEATURE_UNIT, /*_clkid*/ UAC2_ENTITY_CLOCK, /*_ctrl*/ 0x0000, /*_stridx*/ 0x00),\
+  /* Feature Unit Descriptor(4.7.2.8) */\
+  TUD_AUDIO_DESC_FEATURE_UNIT_ONE_CHANNEL(/*_unitid*/ UAC2_ENTITY_FEATURE_UNIT, /*_srcid*/ 0x01, /*_ctrlch0master*/ AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_MUTE_POS | AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_VOLUME_POS, /*_ctrlch1*/ AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_MUTE_POS | AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_VOLUME_POS, /*_stridx*/ 0x00),\
+  /* Standard AS Interface Descriptor(4.9.1) */\
+  /* Interface 1, Alternate 0 - default alternate setting with 0 bandwidth */\
+  TUD_AUDIO_DESC_STD_AS_INT(/*_itfnum*/ (uint8_t)((_itfnum)+1), /*_altset*/ 0x00, /*_nEPs*/ 0x00, /*_stridx*/ 0x00),\
+  /* Standard AS Interface Descriptor(4.9.1) */\
+  /* Interface 1, Alternate 1 - alternate interface for data streaming */\
+  TUD_AUDIO_DESC_STD_AS_INT(/*_itfnum*/ (uint8_t)((_itfnum)+1), /*_altset*/ 0x01, /*_nEPs*/ 0x01, /*_stridx*/ 0x00),\
+  /* Class-Specific AS Interface Descriptor(4.9.2) */\
+  TUD_AUDIO_DESC_CS_AS_INT(/*_termid*/ UAC2_ENTITY_OUTPUT_TERMINAL, /*_ctrl*/ AUDIO_CTRL_NONE, /*_formattype*/ AUDIO_FORMAT_TYPE_I, /*_formats*/ AUDIO_DATA_FORMAT_TYPE_I_PCM, /*_nchannelsphysical*/ 0x01, /*_channelcfg*/ AUDIO_CHANNEL_CONFIG_NON_PREDEFINED, /*_stridx*/ 0x00),\
+  /* Type I Format Type Descriptor(2.3.1.6 - Audio Formats) */\
+  TUD_AUDIO_DESC_TYPE_I_FORMAT(CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_RESOLUTION_RX),\
+  /* Standard AS Isochronous Audio Data Endpoint Descriptor(4.10.1.1) */\
+  TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epin, /*_attr*/ (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ASYNCHRONOUS | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ CFG_TUD_AUDIO_FUNC_1_FORMAT_1_EP_SZ_IN, /*_interval*/ 0x01),\
+  /* Class-Specific AS Isochronous Audio Data Endpoint Descriptor(4.10.1.2) */\
+  TUD_AUDIO_DESC_CS_AS_ISO_EP(/*_attr*/ AUDIO_CS_AS_ISO_DATA_EP_ATT_NON_MAX_PACKETS_OK, /*_ctrl*/ AUDIO_CTRL_NONE, /*_lockdelayunit*/ AUDIO_CS_AS_ISO_DATA_EP_LOCK_DELAY_UNIT_UNDEFINED, /*_lockdelay*/ 0x0000),\
+  /* Interface 1, Alternate 2 - alternate interface for data streaming */\
+  TUD_AUDIO_DESC_STD_AS_INT(/*_itfnum*/ (uint8_t)((_itfnum)+1), /*_altset*/ 0x02, /*_nEPs*/ 0x01, /*_stridx*/ 0x00),\
+  /* Class-Specific AS Interface Descriptor(4.9.2) */\
+  TUD_AUDIO_DESC_CS_AS_INT(/*_termid*/ UAC2_ENTITY_OUTPUT_TERMINAL, /*_ctrl*/ AUDIO_CTRL_NONE, /*_formattype*/ AUDIO_FORMAT_TYPE_I, /*_formats*/ AUDIO_DATA_FORMAT_TYPE_I_PCM, /*_nchannelsphysical*/ 0x01, /*_channelcfg*/ AUDIO_CHANNEL_CONFIG_NON_PREDEFINED, /*_stridx*/ 0x00),\
+  /* Type I Format Type Descriptor(2.3.1.6 - Audio Formats) */\
+  TUD_AUDIO_DESC_TYPE_I_FORMAT(CFG_TUD_AUDIO_FUNC_1_FORMAT_2_N_BYTES_PER_SAMPLE_TX, CFG_TUD_AUDIO_FUNC_1_FORMAT_2_RESOLUTION_RX),\
+  /* Standard AS Isochronous Audio Data Endpoint Descriptor(4.10.1.1) */\
+  TUD_AUDIO_DESC_STD_AS_ISO_EP(/*_ep*/ _epin, /*_attr*/ (TUSB_XFER_ISOCHRONOUS | TUSB_ISO_EP_ATT_ASYNCHRONOUS | TUSB_ISO_EP_ATT_DATA), /*_maxEPsize*/ CFG_TUD_AUDIO_FUNC_1_FORMAT_2_EP_SZ_IN, /*_interval*/ 0x01),\
+  /* Class-Specific AS Isochronous Audio Data Endpoint Descriptor(4.10.1.2) */\
+  TUD_AUDIO_DESC_CS_AS_ISO_EP(/*_attr*/ AUDIO_CS_AS_ISO_DATA_EP_ATT_NON_MAX_PACKETS_OK, /*_ctrl*/ AUDIO_CTRL_NONE, /*_lockdelayunit*/ AUDIO_CS_AS_ISO_DATA_EP_LOCK_DELAY_UNIT_UNDEFINED, /*_lockdelay*/ 0x0000)
+
+
+#endif
--- a/examples/device/board_test/Makefile
+++ b/examples/device/board_test/Makefile
@ -1,4 +1,3 @@
-include ../../../tools/top.mk
 include ../../make.mk

 INC += \
@ -9,10 +8,4 @@ INC += \
 EXAMPLE_SOURCE += $(wildcard src/*.c)
 SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE))

-# board_test example is special example that doesn't enable device or host stack
-# This can cause some TinyUSB API missing, this hack to allow us to fill those API
-# to pass the compilation process
-CFLAGS +=	\
-	-D"tud_int_handler(x)= " \
-
 include ../../rules.mk
--- a/examples/device/board_test/src/CMakeLists.txt
+++ b/examples/device/board_test/src/CMakeLists.txt
@ -2,7 +2,7 @@
 idf_component_register(SRCS "main.c"
                    INCLUDE_DIRS "."
                    REQUIRES freertos soc)
-                    
+
 file(TO_NATIVE_PATH "${TOP}/hw/bsp/${FAMILY}/boards/${BOARD}/board.cmake" board_cmake)

 if(EXISTS ${board_cmake})
--- a/examples/device/board_test/src/main.c
+++ b/examples/device/board_test/src/main.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
@ -56,7 +56,7 @@ int main(void)
  {
    uint32_t interval_ms = board_button_read() ? BLINK_PRESSED : BLINK_UNPRESSED;

-    // Blink every interval ms
+    // Blink and print every interval ms
    if ( !(board_millis() - start_ms < interval_ms) )
    {
      board_uart_write(HELLO_STR, strlen(HELLO_STR));
@ -66,6 +66,13 @@ int main(void)
      board_led_write(led_state);
      led_state = 1 - led_state; // toggle
    }
+
+    // echo
+    uint8_t ch;
+    if ( board_uart_read(&ch, 1) > 0 )
+    {
+      board_uart_write(&ch, 1);
+    }
  }
 }

--- a/examples/device/board_test/src/tusb_config.h
+++ b/examples/device/board_test/src/tusb_config.h
@ -30,6 +30,11 @@
 extern "C" {
 #endif

+// board_test example is special example that doesn't enable device or host stack
+// This can cause some TinyUSB API missing, this define hack to allow us to fill those API
+// to pass the compilation process
+#define tud_int_handler(x)
+
 //--------------------------------------------------------------------
 // COMMON CONFIGURATION
 //--------------------------------------------------------------------
--- a/examples/device/cdc_dual_ports/CMakeLists.txt
+++ b/examples/device/cdc_dual_ports/CMakeLists.txt
@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC

 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
+family_configure_device_example(${PROJECT})
--- a/examples/device/cdc_dual_ports/Makefile
+++ b/examples/device/cdc_dual_ports/Makefile
@ -1,4 +1,3 @@
-include ../../../tools/top.mk
 include ../../make.mk

 INC += \
--- a/examples/device/cdc_dual_ports/src/main.c
+++ b/examples/device/cdc_dual_ports/src/main.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/cdc_dual_ports/src/usb_descriptors.c
+++ b/examples/device/cdc_dual_ports/src/usb_descriptors.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
@ -108,6 +108,17 @@ enum
  #define EPNUM_CDC_1_OUT     0x05
  #define EPNUM_CDC_1_IN      0x86

+#elif CFG_TUSB_MCU == OPT_MCU_FT90X || CFG_TUSB_MCU == OPT_MCU_FT93X
+  // FT9XX doesn't support a same endpoint number with different direction IN and OUT
+  //    e.g EP1 OUT & EP1 IN cannot exist together
+  #define EPNUM_CDC_0_NOTIF   0x81
+  #define EPNUM_CDC_0_OUT     0x02
+  #define EPNUM_CDC_0_IN      0x83
+
+  #define EPNUM_CDC_1_NOTIF   0x84
+  #define EPNUM_CDC_1_OUT     0x05
+  #define EPNUM_CDC_1_IN      0x86
+
 #else
  #define EPNUM_CDC_0_NOTIF   0x81
  #define EPNUM_CDC_0_OUT     0x02
--- a/examples/device/cdc_msc/CMakeLists.txt
+++ b/examples/device/cdc_msc/CMakeLists.txt
@ -26,4 +26,4 @@ target_include_directories(${PROJECT} PUBLIC

 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
+family_configure_device_example(${PROJECT})
--- a/examples/device/cdc_msc/Makefile
+++ b/examples/device/cdc_msc/Makefile
@ -1,4 +1,3 @@
-include ../../../tools/top.mk
 include ../../make.mk

 INC += \
--- a/examples/device/cdc_msc/skip.txt
+++ b/examples/device/cdc_msc/skip.txt
@ -1 +1 @@
-mcu:SAMD11
+mcu:SAMD11
--- a/examples/device/cdc_msc/src/main.c
+++ b/examples/device/cdc_msc/src/main.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
@ -111,7 +111,7 @@ void cdc_task(void)
    // connected and there are data available
    if ( tud_cdc_available() )
    {
-      // read datas
+      // read data
      char buf[64];
      uint32_t count = tud_cdc_read(buf, sizeof(buf));
      (void) count;
--- a/examples/device/cdc_msc/src/msc_disk.c
+++ b/examples/device/cdc_msc/src/msc_disk.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/cdc_msc/src/usb_descriptors.c
+++ b/examples/device/cdc_msc/src/usb_descriptors.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/cdc_msc_freertos/CMakeLists.txt
+++ b/examples/device/cdc_msc_freertos/CMakeLists.txt
@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.5)

 # TOP is absolute path to root directory of TinyUSB git repo
-# needed for esp32sx build. TOOD could be removed later on
+# needed for esp32sx build. TODO could be removed later on
 set(TOP "../../..")
 get_filename_component(TOP "${TOP}" REALPATH)

--- a/examples/device/cdc_msc_freertos/Makefile
+++ b/examples/device/cdc_msc_freertos/Makefile
@ -1,17 +1,17 @@
 DEPS_SUBMODULES += lib/FreeRTOS-Kernel

-include ../../../tools/top.mk
 include ../../make.mk

 FREERTOS_SRC = lib/FreeRTOS-Kernel
+FREERTOS_PORTABLE_PATH= $(FREERTOS_SRC)/portable/$(if $(USE_IAR),IAR,GCC)

 INC += \
 	src \
 	src/FreeRTOSConfig \
 	$(TOP)/hw \
 	$(TOP)/$(FREERTOS_SRC)/include \
-	$(TOP)/$(FREERTOS_SRC)/portable/GCC/$(FREERTOS_PORT)
-	
+	$(TOP)/$(FREERTOS_PORTABLE_SRC)
+
 # Example source
 EXAMPLE_SOURCE = \
 	src/freertos_hook.c \
@ -27,10 +27,20 @@ SRC_C += \
 	$(FREERTOS_SRC)/queue.c \
 	$(FREERTOS_SRC)/tasks.c \
 	$(FREERTOS_SRC)/timers.c \
-	$(subst ../../../,,$(wildcard ../../../$(FREERTOS_SRC)/portable/GCC/$(FREERTOS_PORT)/*.c))
+	$(subst $(TOP)/,,$(wildcard $(TOP)/$(FREERTOS_PORTABLE_SRC)/*.c))

-# Suppress FreeRTOS warnings
-CFLAGS += -Wno-error=cast-qual -Wno-error=redundant-decls
+SRC_S += \
+	$(subst $(TOP)/,,$(wildcard $(TOP)/$(FREERTOS_PORTABLE_SRC)/*.s))
+
+# include heap manage if configSUPPORT_DYNAMIC_ALLOCATION = 1
+# SRC_C += $(FREERTOS_SRC)/portable/MemMang/heap_1.c
+# CFLAGS += -Wno-error=sign-compare
+
+# Suppress FreeRTOSConfig.h warnings
+GCC_CFLAGS += -Wno-error=redundant-decls
+
+# Suppress FreeRTOS source warnings
+GCC_CFLAGS += -Wno-error=cast-qual

 # FreeRTOS (lto + Os) linker issue
 LDFLAGS += -Wl,--undefined=vTaskSwitchContext
--- a/examples/device/cdc_msc_freertos/skip.txt
+++ b/examples/device/cdc_msc_freertos/skip.txt
@ -1,3 +1,4 @@
+mcu:CH32V307
 mcu:CXD56
 mcu:F1C100S
 mcu:GD32VF103
@ -8,4 +9,4 @@ mcu:SAMD11
 mcu:SAMX7X
 mcu:VALENTYUSB_EPTRI
 family:broadcom_32bit
-family:broadcom_64bit
+family:broadcom_64bit
--- a/examples/device/cdc_msc_freertos/src/FreeRTOSConfig/FreeRTOSConfig.h
+++ b/examples/device/cdc_msc_freertos/src/FreeRTOSConfig/FreeRTOSConfig.h
@ -42,6 +42,9 @@
 * See http://www.freertos.org/a00110.html.
 *----------------------------------------------------------*/

+// skip if included from IAR assembler
+#ifndef __IASMARM__
+
 // Include MCU header
 #include "bsp/board_mcu.h"

@ -57,6 +60,8 @@
  extern uint32_t SystemCoreClock;
 #endif

+#endif
+
 /* Cortex M23/M33 port configuration. */
 #define configENABLE_MPU								        0
 #define configENABLE_FPU								        1
@ -69,7 +74,7 @@
 #define configTICK_RATE_HZ                      ( 1000 )
 #define configMAX_PRIORITIES                    ( 5 )
 #define configMINIMAL_STACK_SIZE                ( 128 )
-#define configTOTAL_HEAP_SIZE                   ( 0*1024 ) // dynamic is not used
+#define configTOTAL_HEAP_SIZE                   ( configSUPPORT_DYNAMIC_ALLOCATION*4*1024 )
 #define configMAX_TASK_NAME_LEN                 16
 #define configUSE_16_BIT_TICKS                  0
 #define configIDLE_SHOULD_YIELD                 1
@ -144,10 +149,10 @@

 #ifdef __RX__
 /* Renesas RX series */
-#define vSoftwareInterruptISR					INT_Excep_ICU_SWINT
-#define vTickISR								INT_Excep_CMT0_CMI0
-#define configPERIPHERAL_CLOCK_HZ				(configCPU_CLOCK_HZ/2)
-#define configKERNEL_INTERRUPT_PRIORITY			1
+#define vSoftwareInterruptISR					        INT_Excep_ICU_SWINT
+#define vTickISR								              INT_Excep_CMT0_CMI0
+#define configPERIPHERAL_CLOCK_HZ				      (configCPU_CLOCK_HZ/2)
+#define configKERNEL_INTERRUPT_PRIORITY			  1
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY	4

 #else
@ -163,9 +168,18 @@
 #if defined(__NVIC_PRIO_BITS)
  // For Cortex-M specific: __NVIC_PRIO_BITS is defined in core_cmx.h
 	#define configPRIO_BITS       __NVIC_PRIO_BITS
+
 #elif defined(__ECLIC_INTCTLBITS)
  // RISC-V Bumblebee core from nuclei
  #define configPRIO_BITS       __ECLIC_INTCTLBITS
+
+#elif defined(__IASMARM__)
+  // FIXME: IAR Assembler cannot include mcu header directly to get __NVIC_PRIO_BITS.
+  // Therefore we will hard coded it to minimum value of 2 to get pass ci build.
+  // IAR user must update this to correct value of the target MCU
+  #message "configPRIO_BITS is hard coded to 2 to pass IAR build only. User should update it per MCU"
+  #define configPRIO_BITS       2
+
 #else
  #error "FreeRTOS configPRIO_BITS to be defined"
 #endif
--- a/examples/device/cdc_msc_freertos/src/main.c
+++ b/examples/device/cdc_msc_freertos/src/main.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
@ -51,6 +51,8 @@
  #define USBD_STACK_SIZE    (3*configMINIMAL_STACK_SIZE/2) * (CFG_TUSB_DEBUG ? 2 : 1)
 #endif

+#define CDC_STACK_SZIE      configMINIMAL_STACK_SIZE
+
 //--------------------------------------------------------------------+
 // MACRO CONSTANT TYPEDEF PROTYPES
 //--------------------------------------------------------------------+
@ -66,19 +68,18 @@ enum  {
  BLINK_SUSPENDED = 2500,
 };

-// static timer
+// static timer & task
+#if configSUPPORT_STATIC_ALLOCATION
 StaticTimer_t blinky_tmdef;
-TimerHandle_t blinky_tm;

-// static task
 StackType_t  usb_device_stack[USBD_STACK_SIZE];
 StaticTask_t usb_device_taskdef;

-// static task for cdc
-#define CDC_STACK_SZIE      configMINIMAL_STACK_SIZE
 StackType_t  cdc_stack[CDC_STACK_SZIE];
 StaticTask_t cdc_taskdef;
+#endif

+TimerHandle_t blinky_tm;

 void led_blinky_cb(TimerHandle_t xTimer);
 void usb_device_task(void* param);
@ -92,15 +93,22 @@ int main(void)
 {
  board_init();

+#if configSUPPORT_STATIC_ALLOCATION
  // soft timer for blinky
  blinky_tm = xTimerCreateStatic(NULL, pdMS_TO_TICKS(BLINK_NOT_MOUNTED), true, NULL, led_blinky_cb, &blinky_tmdef);
-  xTimerStart(blinky_tm, 0);

  // Create a task for tinyusb device stack
-  (void) xTaskCreateStatic( usb_device_task, "usbd", USBD_STACK_SIZE, NULL, configMAX_PRIORITIES-1, usb_device_stack, &usb_device_taskdef);
+  xTaskCreateStatic(usb_device_task, "usbd", USBD_STACK_SIZE, NULL, configMAX_PRIORITIES-1, usb_device_stack, &usb_device_taskdef);

  // Create CDC task
-  (void) xTaskCreateStatic( cdc_task, "cdc", CDC_STACK_SZIE, NULL, configMAX_PRIORITIES-2, cdc_stack, &cdc_taskdef);
+  xTaskCreateStatic(cdc_task, "cdc", CDC_STACK_SZIE, NULL, configMAX_PRIORITIES-2, cdc_stack, &cdc_taskdef);
+#else
+  blinky_tm = xTimerCreate(NULL, pdMS_TO_TICKS(BLINK_NOT_MOUNTED), true, NULL, led_blinky_cb);
+  xTaskCreate( usb_device_task, "usbd", USBD_STACK_SIZE, NULL, configMAX_PRIORITIES-1, NULL);
+  xTaskCreate( cdc_task, "cdc", CDC_STACK_SZIE, NULL, configMAX_PRIORITIES-2, NULL);
+#endif
+
+  xTimerStart(blinky_tm, 0);

  // skip starting scheduler (and return) for ESP32-S2 or ESP32-S3
 #if !TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3)
--- a/examples/device/cdc_msc_freertos/src/msc_disk.c
+++ b/examples/device/cdc_msc_freertos/src/msc_disk.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/cdc_msc_freertos/src/usb_descriptors.c
+++ b/examples/device/cdc_msc_freertos/src/usb_descriptors.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/dfu/Makefile
+++ b/examples/device/dfu/Makefile
@ -1,4 +1,3 @@
-include ../../../tools/top.mk
 include ../../make.mk

 INC += \
@ -6,7 +5,10 @@ INC += \
 	$(TOP)/hw \

 # Example source
-EXAMPLE_SOURCE += $(wildcard src/*.c)
+EXAMPLE_SOURCE = \
+	src/main.c \
+	src/usb_descriptors.c
+
 SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE))

 include ../../rules.mk
--- a/examples/device/dfu_runtime/CMakeLists.txt
+++ b/examples/device/dfu_runtime/CMakeLists.txt
@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC

 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
+family_configure_device_example(${PROJECT})
--- a/examples/device/dfu_runtime/Makefile
+++ b/examples/device/dfu_runtime/Makefile
@ -1,4 +1,3 @@
-include ../../../tools/top.mk
 include ../../make.mk

 INC += \
--- a/examples/device/dfu_runtime/src/main.c
+++ b/examples/device/dfu_runtime/src/main.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
@ -31,7 +31,7 @@
 *
 * $ dfu-util -e
 *
- * This will send DETTACH command to put device into bootloader. Since this example
+ * This will send DETACH command to put device into bootloader. Since this example
 * is minimal, it doesn't actually go into DFU mode but rather change the LED blinking
 * pattern to fast rate as indicator.
 */
--- a/examples/device/dynamic_configuration/CMakeLists.txt
+++ b/examples/device/dynamic_configuration/CMakeLists.txt
@ -26,4 +26,4 @@ target_include_directories(${PROJECT} PUBLIC

 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
+family_configure_device_example(${PROJECT})
--- a/examples/device/dynamic_configuration/Makefile
+++ b/examples/device/dynamic_configuration/Makefile
@ -1,4 +1,3 @@
-include ../../../tools/top.mk
 include ../../make.mk

 INC += \
--- a/examples/device/dynamic_configuration/skip.txt
+++ b/examples/device/dynamic_configuration/skip.txt
@ -1 +1 @@
-mcu:SAMD11
+mcu:SAMD11
--- a/examples/device/dynamic_configuration/src/main.c
+++ b/examples/device/dynamic_configuration/src/main.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/dynamic_configuration/src/msc_disk.c
+++ b/examples/device/dynamic_configuration/src/msc_disk.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/dynamic_configuration/src/usb_descriptors.c
+++ b/examples/device/dynamic_configuration/src/usb_descriptors.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
@ -145,6 +145,19 @@ enum
  #define EPNUM_1_MSC_OUT     0x01
  #define EPNUM_1_MSC_IN      0x82

+#elif CFG_TUSB_MCU == OPT_MCU_FT90X || CFG_TUSB_MCU == OPT_MCU_FT93X
+  // FT9XX doesn't support a same endpoint number with different direction IN and OUT
+  //    e.g EP1 OUT & EP1 IN cannot exist together
+  #define EPNUM_0_CDC_NOTIF   0x81
+  #define EPNUM_0_CDC_OUT     0x02
+  #define EPNUM_0_CDC_IN      0x83
+
+  #define EPNUM_0_MIDI_OUT    0x04
+  #define EPNUM_0_MIDI_IN     0x85
+
+  #define EPNUM_1_MSC_OUT     0x01
+  #define EPNUM_1_MSC_IN      0x82
+
 #else
  #define EPNUM_0_CDC_NOTIF   0x81
  #define EPNUM_0_CDC_OUT     0x02
--- a/examples/device/hid_boot_interface/CMakeLists.txt
+++ b/examples/device/hid_boot_interface/CMakeLists.txt
@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC

 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
+family_configure_device_example(${PROJECT})
--- a/examples/device/hid_boot_interface/Makefile
+++ b/examples/device/hid_boot_interface/Makefile
@ -1,4 +1,3 @@
-include ../../../tools/top.mk
 include ../../make.mk

 INC += \
@ -9,7 +8,7 @@ INC += \
 EXAMPLE_SOURCE = \
 	src/main.c \
 	src/usb_descriptors.c
-	
+
 SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE))

 include ../../rules.mk
--- a/examples/device/hid_boot_interface/src/main.c
+++ b/examples/device/hid_boot_interface/src/main.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
@ -157,11 +157,11 @@ void hid_task(void)
      {
        uint8_t const report_id   = 0;
        uint8_t const button_mask = 0;
-        uint8_t const veritical   = 0;
+        uint8_t const vertical    = 0;
        uint8_t const horizontal  = 0;
        int8_t  const delta       = 5;

-        tud_hid_n_mouse_report(ITF_NUM_MOUSE, report_id, button_mask, delta, delta, veritical, horizontal);
+        tud_hid_n_mouse_report(ITF_NUM_MOUSE, report_id, button_mask, delta, delta, vertical, horizontal);
      }
    }
  }
@ -175,13 +175,13 @@ void tud_hid_set_protocol_cb(uint8_t instance, uint8_t protocol)
  (void) protocol;

  // nothing to do since we use the same compatible boot report for both Boot and Report mode.
-  // TOOD set a indicator for user
+  // TODO set a indicator for user
 }

 // Invoked when sent REPORT successfully to host
 // Application can use this to send the next report
 // Note: For composite reports, report[0] is report ID
-void tud_hid_report_complete_cb(uint8_t instance, uint8_t const* report, /*uint16_t*/ uint8_t len)
+void tud_hid_report_complete_cb(uint8_t instance, uint8_t const* report, uint16_t len)
 {
  (void) instance;
  (void) report;
--- a/examples/device/hid_boot_interface/src/usb_descriptors.c
+++ b/examples/device/hid_boot_interface/src/usb_descriptors.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/hid_boot_interface/src/usb_descriptors.h
+++ b/examples/device/hid_boot_interface/src/usb_descriptors.h
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/hid_composite/CMakeLists.txt
+++ b/examples/device/hid_composite/CMakeLists.txt
@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC

 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
+family_configure_device_example(${PROJECT})
--- a/examples/device/hid_composite/Makefile
+++ b/examples/device/hid_composite/Makefile
@ -1,4 +1,3 @@
-include ../../../tools/top.mk
 include ../../make.mk

 INC += \
--- a/examples/device/hid_composite/src/main.c
+++ b/examples/device/hid_composite/src/main.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
@ -223,7 +223,7 @@ void hid_task(void)
 // Invoked when sent REPORT successfully to host
 // Application can use this to send the next report
 // Note: For composite reports, report[0] is report ID
-void tud_hid_report_complete_cb(uint8_t instance, uint8_t const* report, /*uint16_t*/ uint8_t len)
+void tud_hid_report_complete_cb(uint8_t instance, uint8_t const* report, uint16_t len)
 {
  (void) instance;
  (void) len;
--- a/examples/device/hid_composite/src/usb_descriptors.c
+++ b/examples/device/hid_composite/src/usb_descriptors.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/hid_composite/src/usb_descriptors.h
+++ b/examples/device/hid_composite/src/usb_descriptors.h
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/hid_composite_freertos/Makefile
+++ b/examples/device/hid_composite_freertos/Makefile
@ -1,23 +1,23 @@
 DEPS_SUBMODULES += lib/FreeRTOS-Kernel

-include ../../../tools/top.mk
 include ../../make.mk

 FREERTOS_SRC = lib/FreeRTOS-Kernel
+FREERTOS_PORTABLE_PATH= $(FREERTOS_SRC)/portable/$(if $(USE_IAR),IAR,GCC)

 INC += \
 	src \
 	src/FreeRTOSConfig \
 	$(TOP)/hw \
 	$(TOP)/$(FREERTOS_SRC)/include \
-	$(TOP)/$(FREERTOS_SRC)/portable/GCC/$(FREERTOS_PORT)	
+	$(TOP)/$(FREERTOS_PORTABLE_SRC)

 # Example source
 EXAMPLE_SOURCE = \
 	src/freertos_hook.c \
 	src/main.c \
 	src/usb_descriptors.c
-	
+
 SRC_C += $(addprefix $(CURRENT_PATH)/, $(EXAMPLE_SOURCE))

 # FreeRTOS source, all files in port folder
@ -26,10 +26,20 @@ SRC_C += \
 	$(FREERTOS_SRC)/queue.c \
 	$(FREERTOS_SRC)/tasks.c \
 	$(FREERTOS_SRC)/timers.c \
-	$(subst ../../../,,$(wildcard ../../../$(FREERTOS_SRC)/portable/GCC/$(FREERTOS_PORT)/*.c))
+	$(subst $(TOP)/,,$(wildcard $(TOP)/$(FREERTOS_PORTABLE_SRC)/*.c))

-# Suppress FreeRTOS warnings
-CFLAGS += -Wno-error=cast-qual -Wno-error=redundant-decls
+SRC_S += \
+	$(subst $(TOP)/,,$(wildcard $(TOP)/$(FREERTOS_PORTABLE_SRC)/*.s))
+
+# include heap manage if configSUPPORT_DYNAMIC_ALLOCATION = 1
+# SRC_C += $(FREERTOS_SRC)/portable/MemMang/heap_1.c
+# CFLAGS += -Wno-error=sign-compare
+
+# Suppress FreeRTOSConfig.h warnings
+GCC_CFLAGS += -Wno-error=redundant-decls
+
+# Suppress FreeRTOS source warnings
+GCC_CFLAGS += -Wno-error=cast-qual

 # FreeRTOS (lto + Os) linker issue
 LDFLAGS += -Wl,--undefined=vTaskSwitchContext
--- a/examples/device/hid_composite_freertos/skip.txt
+++ b/examples/device/hid_composite_freertos/skip.txt
@ -1,3 +1,4 @@
+mcu:CH32V307
 mcu:CXD56
 mcu:F1C100S
 mcu:GD32VF103
@ -8,4 +9,4 @@ mcu:SAMD11
 mcu:SAMX7X
 mcu:VALENTYUSB_EPTRI
 family:broadcom_32bit
-family:broadcom_64bit
+family:broadcom_64bit
--- a/examples/device/hid_composite_freertos/src/FreeRTOSConfig/FreeRTOSConfig.h
+++ b/examples/device/hid_composite_freertos/src/FreeRTOSConfig/FreeRTOSConfig.h
@ -42,20 +42,26 @@
 * See http://www.freertos.org/a00110.html.
 *----------------------------------------------------------*/

+// skip if included from IAR assembler
+#ifndef __IASMARM__
+
 // Include MCU header
 #include "bsp/board_mcu.h"

 #if CFG_TUSB_MCU == OPT_MCU_ESP32S2 || CFG_TUSB_MCU == OPT_MCU_ESP32S3
-#error "ESP32-Sx should use IDF's FreeRTOSConfig.h"
+  #error "ESP32-Sx should use IDF's FreeRTOSConfig.h"
 #endif

+// TODO fix later
 #if CFG_TUSB_MCU == OPT_MCU_MM32F327X
-  // TODO fix/remove later  
  extern u32 SystemCoreClock;
 #else
+  // FIXME cause redundant-decls warnings
  extern uint32_t SystemCoreClock;
 #endif

+#endif
+
 /* Cortex M23/M33 port configuration. */
 #define configENABLE_MPU								        0
 #define configENABLE_FPU								        1
@ -68,7 +74,7 @@
 #define configTICK_RATE_HZ                      ( 1000 )
 #define configMAX_PRIORITIES                    ( 5 )
 #define configMINIMAL_STACK_SIZE                ( 128 )
-#define configTOTAL_HEAP_SIZE                   ( 0*1024 ) // dynamic is not used
+#define configTOTAL_HEAP_SIZE                   ( configSUPPORT_DYNAMIC_ALLOCATION*4*1024 )
 #define configMAX_TASK_NAME_LEN                 16
 #define configUSE_16_BIT_TICKS                  0
 #define configIDLE_SHOULD_YIELD                 1
@ -143,10 +149,10 @@

 #ifdef __RX__
 /* Renesas RX series */
-#define vSoftwareInterruptISR					INT_Excep_ICU_SWINT
-#define vTickISR								INT_Excep_CMT0_CMI0
-#define configPERIPHERAL_CLOCK_HZ				(configCPU_CLOCK_HZ/2)
-#define configKERNEL_INTERRUPT_PRIORITY			1
+#define vSoftwareInterruptISR					        INT_Excep_ICU_SWINT
+#define vTickISR								              INT_Excep_CMT0_CMI0
+#define configPERIPHERAL_CLOCK_HZ				      (configCPU_CLOCK_HZ/2)
+#define configKERNEL_INTERRUPT_PRIORITY			  1
 #define configMAX_SYSCALL_INTERRUPT_PRIORITY	4

 #else
@ -162,9 +168,18 @@
 #if defined(__NVIC_PRIO_BITS)
  // For Cortex-M specific: __NVIC_PRIO_BITS is defined in core_cmx.h
 	#define configPRIO_BITS       __NVIC_PRIO_BITS
+
 #elif defined(__ECLIC_INTCTLBITS)
  // RISC-V Bumblebee core from nuclei
  #define configPRIO_BITS       __ECLIC_INTCTLBITS
+
+#elif defined(__IASMARM__)
+  // FIXME: IAR Assembler cannot include mcu header directly to get __NVIC_PRIO_BITS.
+  // Therefore we will hard coded it to minimum value of 2 to get pass ci build.
+  // IAR user must update this to correct value of the target MCU
+  #message "configPRIO_BITS is hard coded to 2 to pass IAR build only. User should update it per MCU"
+  #define configPRIO_BITS       2
+
 #else
  #error "FreeRTOS configPRIO_BITS to be defined"
 #endif
--- a/examples/device/hid_composite_freertos/src/main.c
+++ b/examples/device/hid_composite_freertos/src/main.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
@ -53,6 +53,8 @@
  #define USBD_STACK_SIZE    (3*configMINIMAL_STACK_SIZE/2) * (CFG_TUSB_DEBUG ? 2 : 1)
 #endif

+#define HID_STACK_SZIE      configMINIMAL_STACK_SIZE
+
 //--------------------------------------------------------------------+
 // MACRO CONSTANT TYPEDEF PROTYPES
 //--------------------------------------------------------------------+
@ -68,19 +70,18 @@ enum  {
  BLINK_SUSPENDED = 2500,
 };

-// static timer
+// static timer & task
+#if configSUPPORT_STATIC_ALLOCATION
 StaticTimer_t blinky_tmdef;
-TimerHandle_t blinky_tm;

-// static task
 StackType_t  usb_device_stack[USBD_STACK_SIZE];
 StaticTask_t usb_device_taskdef;

-// static task for hid
-#define HID_STACK_SZIE      configMINIMAL_STACK_SIZE
 StackType_t  hid_stack[HID_STACK_SZIE];
 StaticTask_t hid_taskdef;
+#endif

+TimerHandle_t blinky_tm;

 void led_blinky_cb(TimerHandle_t xTimer);
 void usb_device_task(void* param);
@ -94,15 +95,22 @@ int main(void)
 {
  board_init();

+#if configSUPPORT_STATIC_ALLOCATION
  // soft timer for blinky
  blinky_tm = xTimerCreateStatic(NULL, pdMS_TO_TICKS(BLINK_NOT_MOUNTED), true, NULL, led_blinky_cb, &blinky_tmdef);
-  xTimerStart(blinky_tm, 0);

  // Create a task for tinyusb device stack
-  (void) xTaskCreateStatic( usb_device_task, "usbd", USBD_STACK_SIZE, NULL, configMAX_PRIORITIES-1, usb_device_stack, &usb_device_taskdef);
+  xTaskCreateStatic(usb_device_task, "usbd", USBD_STACK_SIZE, NULL, configMAX_PRIORITIES-1, usb_device_stack, &usb_device_taskdef);

  // Create HID task
-  (void) xTaskCreateStatic( hid_task, "hid", HID_STACK_SZIE, NULL, configMAX_PRIORITIES-2, hid_stack, &hid_taskdef);
+  xTaskCreateStatic(hid_task, "hid", HID_STACK_SZIE, NULL, configMAX_PRIORITIES-2, hid_stack, &hid_taskdef);
+#else
+  blinky_tm = xTimerCreate(NULL, pdMS_TO_TICKS(BLINK_NOT_MOUNTED), true, NULL, led_blinky_cb);
+  xTaskCreate(usb_device_task, "usbd", USBD_STACK_SIZE, NULL, configMAX_PRIORITIES-1, NULL);
+  xTaskCreate(hid_task, "hid", HID_STACK_SZIE, NULL, configMAX_PRIORITIES-2, NULL);
+#endif
+
+  xTimerStart(blinky_tm, 0);

  // skip starting scheduler (and return) for ESP32-S2 or ESP32-S3
 #if !TU_CHECK_MCU(OPT_MCU_ESP32S2, OPT_MCU_ESP32S3)
@ -294,7 +302,7 @@ void hid_task(void* param)
 // Invoked when sent REPORT successfully to host
 // Application can use this to send the next report
 // Note: For composite reports, report[0] is report ID
-void tud_hid_report_complete_cb(uint8_t instance, uint8_t const* report, /*uint16_t*/ uint8_t len)
+void tud_hid_report_complete_cb(uint8_t instance, uint8_t const* report, uint16_t len)
 {
  (void) instance;
  (void) len;
--- a/examples/device/hid_composite_freertos/src/usb_descriptors.c
+++ b/examples/device/hid_composite_freertos/src/usb_descriptors.c
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/hid_composite_freertos/src/usb_descriptors.h
+++ b/examples/device/hid_composite_freertos/src/usb_descriptors.h
@ -1,4 +1,4 @@
-/* 
+/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2019 Ha Thach (tinyusb.org)
--- a/examples/device/hid_generic_inout/CMakeLists.txt
+++ b/examples/device/hid_generic_inout/CMakeLists.txt
@ -25,4 +25,4 @@ target_include_directories(${PROJECT} PUBLIC

 # Configure compilation flags and libraries for the example... see the corresponding function
 # in hw/bsp/FAMILY/family.cmake for details.
-family_configure_device_example(${PROJECT})
+family_configure_device_example(${PROJECT})
--- a/examples/device/hid_generic_inout/Makefile
+++ b/examples/device/hid_generic_inout/Makefile
@ -1,4 +1,3 @@
-include ../../../tools/top.mk
 include ../../make.mk

 INC += \
--- a/Show More
+++ b/Show More