diff --git a/.codespell/ignore-words.txt b/.codespell/ignore-words.txt
index fc14fe417..5c89bae1c 100644
--- a/.codespell/ignore-words.txt
+++ b/.codespell/ignore-words.txt
@@ -9,3 +9,4 @@ te
 attch
 endianess
 pris
+busses
diff --git a/.github/workflows/build_arm.yml b/.github/workflows/build_arm.yml
index f63f637b1..b60d12a98 100644
--- a/.github/workflows/build_arm.yml
+++ b/.github/workflows/build_arm.yml
@@ -35,22 +35,20 @@ jobs:
         - 'broadcom_32bit'
         - 'imxrt'
         - 'kinetis_k32 kinetis_kl'
-        - 'lpc15 lpc18'
-        - 'lpc54 lpc55'
+        - 'lpc11 lpc13 lpc15 lpc17 lpc18'
+        - 'lpc51 lpc54 lpc55'
         - 'mm32 msp432e4'
         - 'nrf'
         - 'ra'
         - 'rp2040'
-        - 'samd11'
-        - 'samd21'
-        - 'samd51'
+        - 'samd11 samd21'
+        - 'samd51 same5x'
         - 'saml2x'
-        - 'stm32f0 stm32f1'
+        - 'stm32f0 stm32f1 stm32f2 stm32f3'
         - 'stm32f4'
         - 'stm32f7'
-        - 'stm32g4 stm32wb'
-        - 'stm32h7'
-        - 'stm32l4'
+        - 'stm32g4 stm32h7'
+        - 'stm32l0 stm32l4 stm32u5 stm32wb'
         - 'tm4c123 xmc4000'
     steps:
     - name: Setup Python
@@ -96,55 +94,28 @@ jobs:
     # Upload binaries for rp2040/stm32l412nucleo hardware test with self-hosted
 
     - name: Prepare rp2040 Artifacts
-      if: matrix.family == 'rp2040' && github.repository_owner == 'hathach'
+      if: contains(matrix.family, 'rp2040') && github.repository_owner == 'hathach'
       run: find examples/ -name "*.elf" -exec mv {} . \;
 
     - name: Prepare stm32l412nucleo Artifacts
-      if: matrix.family == 'stm32l4'
+      if: contains(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')
+    - name: Upload Artifacts for rp2040
+      if: contains(matrix.family,'rp2040') && github.repository_owner == 'hathach'
       uses: actions/upload-artifact@v3
       with:
-        name: ${{ matrix.family }}
+        name: rp2040
         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:
-        example:
-        # Alphabetical order, a group of 4
-        - 'device/audio_test device/board_test device/cdc_dual_ports device/cdc_msc'
-        - 'device/cdc_msc_freertos device/dfu_runtime device/hid_composite device/hid_composite_freertos'
-        - 'device/hid_generic_inout device/hid_multiple_interface device/midi_test device/msc_dual_lun'
-        - 'device/net_lwip_webserver'
-        - 'device/uac2_headset device/usbtmc device/webusb_serial host/cdc_msc_hid'
-
-    steps:
-    - name: Setup Python
-      uses: actions/setup-python@v4
+    - name: Upload Artifacts for stm32l412nucleo
+      if: contains(matrix.family, 'stm32l4') && github.repository_owner == 'hathach'
+      uses: actions/upload-artifact@v3
       with:
-        python-version: '3.x'
-
-    - name: Install ARM GCC
-      uses: carlosperate/arm-none-eabi-gcc-action@v1
-      with:
-        release: '11.2-2022.02'
-
-    - name: Checkout TinyUSB
-      uses: actions/checkout@v3
-
-    - name: Build
-      run: python3 tools/build_board.py ${{ matrix.example }}
+        name: stm32l4
+        path: |
+          *.elf
 
   # ---------------------------------------
   # Hardware in the loop (HIL)
diff --git a/examples/rules.mk b/examples/rules.mk
index 59cf4fd1f..b85837c16 100644
--- a/examples/rules.mk
+++ b/examples/rules.mk
@@ -66,6 +66,10 @@ ifeq ($(NO_LTO),1)
 CFLAGS := $(filter-out -flto,$(CFLAGS))
 endif
 
+ifneq ($(CFLAGS_SKIP),)
+CFLAGS := $(filter-out $(CFLAGS_SKIP),$(CFLAGS))
+endif
+
 LDFLAGS += $(CFLAGS) -Wl,-Map=$@.map -Wl,-cref -Wl,-gc-sections
 
 ifdef LD_FILE
diff --git a/hw/bsp/d5035_01/board.mk b/hw/bsp/d5035_01/board.mk
deleted file mode 100644
index fc196b339..000000000
--- a/hw/bsp/d5035_01/board.mk
+++ /dev/null
@@ -1,61 +0,0 @@
-DEPS_SUBMODULES += hw/mcu/microchip
-HWREV ?= 1
-
-CFLAGS += \
-  -mthumb \
-  -mabi=aapcs \
-  -mlong-calls \
-  -mcpu=cortex-m4 \
-  -mfloat-abi=hard \
-  -mfpu=fpv4-sp-d16 \
-  -nostdlib -nostartfiles \
-  -D__SAME51J19A__ \
-  -DCONF_CPU_FREQUENCY=80000000 \
-  -DCONF_GCLK_USB_FREQUENCY=48000000 \
-  -DCFG_TUSB_MCU=OPT_MCU_SAME5X \
-  -DD5035_01=1 \
-  -DBOARD_NAME="\"D5035-01\"" \
-  -DSVC_Handler=SVCall_Handler \
-  -DHWREV=$(HWREV)
-
-# suppress warning caused by vendor mcu driver
-CFLAGS += -Wno-error=cast-qual
-
-# All source paths should be relative to the top level.
-LD_FILE = hw/bsp/$(BOARD)/same51j19a_flash.ld
-
-SRC_C += \
-  src/portable/microchip/samd/dcd_samd.c \
-  hw/mcu/microchip/same51/gcc/gcc/startup_same51.c \
-  hw/mcu/microchip/same51/gcc/system_same51.c
-
-ifdef SYSCALLS
-ifneq ($(SYSCALLS),0)
-  SRC_C += hw/mcu/microchip/same51/hal/utils/src/utils_syscalls.c
-endif
-endif
-
-ifdef LOG
-ifneq ($(LOG),0)
-  SRC_C += hw/mcu/microchip/same51/hal/utils/src/utils_syscalls.c
-endif
-endif
-
-INC += \
-	$(TOP)/hw/mcu/microchip/same51/ \
-	$(TOP)/hw/mcu/microchip/same51/config \
-	$(TOP)/hw/mcu/microchip/same51/include \
-	$(TOP)/hw/mcu/microchip/same51/hal/include \
-	$(TOP)/hw/mcu/microchip/same51/hal/utils/include \
-	$(TOP)/hw/mcu/microchip/same51/hpl/port \
-	$(TOP)/hw/mcu/microchip/same51/hri \
-	$(TOP)/hw/mcu/microchip/same51/CMSIS/Include
-
-# For freeRTOS port source
-FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM4F
-
-# For flash-jlink target
-JLINK_DEVICE = ATSAME51J19
-
-# flash using jlink
-flash: flash-jlink
diff --git a/hw/bsp/lpc11/boards/lpcxpresso11u37/board.mk b/hw/bsp/lpc11/boards/lpcxpresso11u37/board.mk
new file mode 100644
index 000000000..fdc17374b
--- /dev/null
+++ b/hw/bsp/lpc11/boards/lpcxpresso11u37/board.mk
@@ -0,0 +1,24 @@
+MCU = 11uxx
+MCU_DRV = 11xx
+
+CFLAGS += \
+  -DCORE_M0 \
+  -DCFG_EXAMPLE_MSC_READONLY \
+  -DCFG_EXAMPLE_VIDEO_READONLY \
+  -DCFG_TUSB_MEM_SECTION='__attribute__((section(".data.$$RAM2")))'
+
+# mcu driver cause following warnings
+CFLAGS += \
+	-Wno-error=strict-prototypes \
+	-Wno-error=unused-parameter \
+	-Wno-error=redundant-decls
+
+# All source paths should be relative to the top level.
+LD_FILE = $(BOARD_PATH)/lpc11u37.ld
+
+# For flash-jlink target
+JLINK_DEVICE = LPC11U37/401
+PYOCD_TARGET = lpc11u37
+
+# flash using pyocd
+flash: flash-pyocd
diff --git a/hw/bsp/lpcxpresso11u37/lpc11u37.ld b/hw/bsp/lpc11/boards/lpcxpresso11u37/lpc11u37.ld
similarity index 100%
rename from hw/bsp/lpcxpresso11u37/lpc11u37.ld
rename to hw/bsp/lpc11/boards/lpcxpresso11u37/lpc11u37.ld
diff --git a/hw/bsp/lpcxpresso11u37/lpcxpresso11u37.c b/hw/bsp/lpc11/boards/lpcxpresso11u37/lpcxpresso11u37.c
similarity index 99%
rename from hw/bsp/lpcxpresso11u37/lpcxpresso11u37.c
rename to hw/bsp/lpc11/boards/lpcxpresso11u37/lpcxpresso11u37.c
index 79cd685c3..02dc2cbf9 100644
--- a/hw/bsp/lpcxpresso11u37/lpcxpresso11u37.c
+++ b/hw/bsp/lpc11/boards/lpcxpresso11u37/lpcxpresso11u37.c
@@ -25,7 +25,7 @@
  */
 
 #include "chip.h"
-#include "../board.h"
+#include "bsp/board.h"
 
 //--------------------------------------------------------------------+
 // Forward USB interrupt events to TinyUSB IRQ Handler
diff --git a/hw/bsp/lpc11/boards/lpcxpresso11u68/board.mk b/hw/bsp/lpc11/boards/lpcxpresso11u68/board.mk
new file mode 100644
index 000000000..fbe97b853
--- /dev/null
+++ b/hw/bsp/lpc11/boards/lpcxpresso11u68/board.mk
@@ -0,0 +1,18 @@
+MCU = 11u6x
+MCU_DRV = 11u6x
+
+CFLAGS += \
+  -DCORE_M0PLUS \
+  -D__VTOR_PRESENT=0 \
+  -DCFG_TUSB_MEM_SECTION='__attribute__((section(".data.$$RAM3")))' \
+  -DCFG_TUSB_MEM_ALIGN='__attribute__((aligned(64)))'
+
+# All source paths should be relative to the top level.
+LD_FILE = $(BOARD_PATH)/lpc11u68.ld
+
+# For flash-jlink target
+JLINK_DEVICE = LPC11U68
+PYOCD_TARGET = lpc11u68
+
+# flash using pyocd
+flash: flash-pyocd
diff --git a/hw/bsp/lpcxpresso11u68/lpc11u68.ld b/hw/bsp/lpc11/boards/lpcxpresso11u68/lpc11u68.ld
similarity index 100%
rename from hw/bsp/lpcxpresso11u68/lpc11u68.ld
rename to hw/bsp/lpc11/boards/lpcxpresso11u68/lpc11u68.ld
diff --git a/hw/bsp/lpcxpresso11u68/lpcxpresso11u68.c b/hw/bsp/lpc11/boards/lpcxpresso11u68/lpcxpresso11u68.c
similarity index 99%
rename from hw/bsp/lpcxpresso11u68/lpcxpresso11u68.c
rename to hw/bsp/lpc11/boards/lpcxpresso11u68/lpcxpresso11u68.c
index a04e43867..44d091511 100644
--- a/hw/bsp/lpcxpresso11u68/lpcxpresso11u68.c
+++ b/hw/bsp/lpc11/boards/lpcxpresso11u68/lpcxpresso11u68.c
@@ -25,7 +25,7 @@
  */
 
 #include "chip.h"
-#include "../board.h"
+#include "bsp/board.h"
 
 //--------------------------------------------------------------------+
 // Forward USB interrupt events to TinyUSB IRQ Handler
diff --git a/hw/bsp/lpc11/family.mk b/hw/bsp/lpc11/family.mk
new file mode 100644
index 000000000..eb427c09d
--- /dev/null
+++ b/hw/bsp/lpc11/family.mk
@@ -0,0 +1,43 @@
+DEPS_SUBMODULES += hw/mcu/nxp/lpcopen
+
+MCU_DIR = hw/mcu/nxp/lpcopen/lpc$(MCU)/lpc_chip_$(MCU)
+include $(TOP)/$(BOARD_PATH)/board.mk
+
+CFLAGS += \
+  -flto \
+  -mthumb \
+  -mabi=aapcs \
+  -mcpu=cortex-m0plus \
+  -nostdlib \
+  -D__USE_LPCOPEN \
+  -DCFG_TUSB_MCU=OPT_MCU_LPC11UXX \
+  -DCFG_TUSB_MEM_ALIGN='__attribute__((aligned(64)))'
+
+SRC_C += \
+	src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c \
+	$(MCU_DIR)/../gcc/cr_startup_lpc$(MCU_DRV).c \
+	$(MCU_DIR)/src/chip_$(MCU_DRV).c \
+	$(MCU_DIR)/src/clock_$(MCU_DRV).c \
+	$(MCU_DIR)/src/iocon_$(MCU_DRV).c \
+	$(MCU_DIR)/src/sysinit_$(MCU_DRV).c
+
+ifeq ($(MCU),11u6x)
+SRC_C += \
+	$(MCU_DIR)/src/gpio_$(MCU_DRV).c \
+	$(MCU_DIR)/src/syscon_$(MCU_DRV).c \
+
+else
+
+SRC_C += \
+	$(MCU_DIR)/src/gpio_$(MCU_DRV)_1.c \
+	$(MCU_DIR)/src/sysctl_$(MCU_DRV).c
+endif
+
+INC += \
+	$(TOP)/$(MCU_DIR)/inc
+
+# For freeRTOS port source
+FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM0
+
+# For flash-jlink target
+JLINK_DEVICE = LPC11U68
diff --git a/hw/bsp/lpc13/boards/lpcxpresso1347/board.mk b/hw/bsp/lpc13/boards/lpcxpresso1347/board.mk
new file mode 100644
index 000000000..31eb2f28f
--- /dev/null
+++ b/hw/bsp/lpc13/boards/lpcxpresso1347/board.mk
@@ -0,0 +1,13 @@
+DEPS_SUBMODULES += hw/mcu/nxp/lpcopen
+
+CFLAGS += \
+  -DCFG_TUSB_MEM_SECTION='__attribute__((section(".data.$$RAM2")))'
+
+# All source paths should be relative to the top level.
+LD_FILE = $(BOARD_PATH)/lpc1347.ld
+
+# For flash-jlink target
+JLINK_DEVICE = LPC1347
+
+# flash using jlink
+flash: flash-jlink
diff --git a/hw/bsp/lpcxpresso1347/lpc1347.ld b/hw/bsp/lpc13/boards/lpcxpresso1347/lpc1347.ld
similarity index 100%
rename from hw/bsp/lpcxpresso1347/lpc1347.ld
rename to hw/bsp/lpc13/boards/lpcxpresso1347/lpc1347.ld
diff --git a/hw/bsp/lpcxpresso1347/lpcxpresso1347.c b/hw/bsp/lpc13/boards/lpcxpresso1347/lpcxpresso1347.c
similarity index 100%
rename from hw/bsp/lpcxpresso1347/lpcxpresso1347.c
rename to hw/bsp/lpc13/boards/lpcxpresso1347/lpcxpresso1347.c
diff --git a/hw/bsp/lpcxpresso1347/board.mk b/hw/bsp/lpc13/family.mk
similarity index 77%
rename from hw/bsp/lpcxpresso1347/board.mk
rename to hw/bsp/lpc13/family.mk
index 25d6fa7a3..28f98e4ca 100644
--- a/hw/bsp/lpcxpresso1347/board.mk
+++ b/hw/bsp/lpc13/family.mk
@@ -1,5 +1,8 @@
 DEPS_SUBMODULES += hw/mcu/nxp/lpcopen
 
+MCU_DIR = hw/mcu/nxp/lpcopen/lpc13xx/lpc_chip_13xx
+include $(TOP)/$(BOARD_PATH)/board.mk
+
 CFLAGS += \
   -flto \
   -mthumb \
@@ -11,16 +14,13 @@ CFLAGS += \
   -DCFG_EXAMPLE_MSC_READONLY \
   -DCFG_EXAMPLE_VIDEO_READONLY \
   -DCFG_TUSB_MCU=OPT_MCU_LPC13XX \
-  -DCFG_TUSB_MEM_SECTION='__attribute__((section(".data.$$RAM2")))' \
   -DCFG_TUSB_MEM_ALIGN='__attribute__((aligned(64)))'
 
 # startup.c and lpc_types.h cause following errors
 CFLAGS += -Wno-error=strict-prototypes -Wno-error=redundant-decls
 
-MCU_DIR = hw/mcu/nxp/lpcopen/lpc13xx/lpc_chip_13xx
-
-# All source paths should be relative to the top level.
-LD_FILE = hw/bsp/$(BOARD)/lpc1347.ld
+# caused by freeRTOS port !!
+CFLAGS += -Wno-error=maybe-uninitialized
 
 SRC_C += \
 	src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c \
@@ -37,9 +37,3 @@ INC += \
 
 # For freeRTOS port source
 FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM3
-
-# For flash-jlink target
-JLINK_DEVICE = LPC1347
-
-# flash using jlink
-flash: flash-jlink
diff --git a/hw/bsp/lpc17/boards/lpcxpresso1769/board.mk b/hw/bsp/lpc17/boards/lpcxpresso1769/board.mk
new file mode 100644
index 000000000..e22c4f64b
--- /dev/null
+++ b/hw/bsp/lpc17/boards/lpcxpresso1769/board.mk
@@ -0,0 +1,8 @@
+# All source paths should be relative to the top level.
+LD_FILE = $(BOARD_PATH)/lpc1769.ld
+
+# For flash-jlink target
+JLINK_DEVICE = LPC1769
+
+# flash using jlink
+flash: flash-jlink
diff --git a/hw/bsp/lpcxpresso1769/lpc1769.ld b/hw/bsp/lpc17/boards/lpcxpresso1769/lpc1769.ld
similarity index 100%
rename from hw/bsp/lpcxpresso1769/lpc1769.ld
rename to hw/bsp/lpc17/boards/lpcxpresso1769/lpc1769.ld
diff --git a/hw/bsp/lpcxpresso1769/lpcxpresso1769.c b/hw/bsp/lpc17/boards/lpcxpresso1769/lpcxpresso1769.c
similarity index 100%
rename from hw/bsp/lpcxpresso1769/lpcxpresso1769.c
rename to hw/bsp/lpc17/boards/lpcxpresso1769/lpcxpresso1769.c
diff --git a/hw/bsp/lpc17/boards/mbed1768/board.mk b/hw/bsp/lpc17/boards/mbed1768/board.mk
new file mode 100644
index 000000000..a982a970b
--- /dev/null
+++ b/hw/bsp/lpc17/boards/mbed1768/board.mk
@@ -0,0 +1,9 @@
+# All source paths should be relative to the top level.
+LD_FILE = $(BOARD_PATH)/lpc1768.ld
+
+# For flash-jlink target
+JLINK_DEVICE = LPC1768
+PYOCD_TARGET = lpc1768
+
+# flash using pyocd
+flash: flash-pyocd
diff --git a/hw/bsp/mbed1768/lpc1768.ld b/hw/bsp/lpc17/boards/mbed1768/lpc1768.ld
similarity index 100%
rename from hw/bsp/mbed1768/lpc1768.ld
rename to hw/bsp/lpc17/boards/mbed1768/lpc1768.ld
diff --git a/hw/bsp/mbed1768/mbed1768.c b/hw/bsp/lpc17/boards/mbed1768/mbed1768.c
similarity index 100%
rename from hw/bsp/mbed1768/mbed1768.c
rename to hw/bsp/lpc17/boards/mbed1768/mbed1768.c
diff --git a/hw/bsp/lpcxpresso1769/board.mk b/hw/bsp/lpc17/family.mk
similarity index 82%
rename from hw/bsp/lpcxpresso1769/board.mk
rename to hw/bsp/lpc17/family.mk
index d459c8b7b..af01b55a8 100644
--- a/hw/bsp/lpcxpresso1769/board.mk
+++ b/hw/bsp/lpc17/family.mk
@@ -1,5 +1,8 @@
 DEPS_SUBMODULES += hw/mcu/nxp/lpcopen
 
+MCU_DIR = hw/mcu/nxp/lpcopen/lpc175x_6x/lpc_chip_175x_6x
+include $(TOP)/$(BOARD_PATH)/board.mk
+
 CFLAGS += \
   -flto \
   -mthumb \
@@ -14,10 +17,10 @@ CFLAGS += \
 # lpc_types.h cause following errors
 CFLAGS += -Wno-error=strict-prototypes -Wno-error=cast-qual
 
-MCU_DIR = hw/mcu/nxp/lpcopen/lpc175x_6x/lpc_chip_175x_6x
+# caused by freeRTOS port !!
+CFLAGS += -Wno-error=maybe-uninitialized
 
-# All source paths should be relative to the top level.
-LD_FILE = hw/bsp/$(BOARD)/lpc1769.ld
+MCU_DIR = hw/mcu/nxp/lpcopen/lpc175x_6x/lpc_chip_175x_6x
 
 SRC_C += \
 	src/portable/nxp/lpc17_40/dcd_lpc17_40.c \
@@ -35,9 +38,3 @@ INC += \
 
 # For freeRTOS port source
 FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM3
-
-# For flash-jlink target
-JLINK_DEVICE = LPC1769
-
-# flash using jlink
-flash: flash-jlink
diff --git a/hw/bsp/lpc51/boards/lpcxpresso51u68/board.mk b/hw/bsp/lpc51/boards/lpcxpresso51u68/board.mk
new file mode 100644
index 000000000..5627cb024
--- /dev/null
+++ b/hw/bsp/lpc51/boards/lpcxpresso51u68/board.mk
@@ -0,0 +1,11 @@
+MCU = LPC51U68
+
+CFLAGS += \
+  -DCPU_LPC51U68JBD64 \
+  -DCFG_TUSB_MEM_SECTION='__attribute__((section(".data")))'
+
+JLINK_DEVICE = LPC51U68
+PYOCD_TARGET = LPC51U68
+
+# flash using pyocd (51u68 is not supported yet)
+flash: flash-pyocd
diff --git a/hw/bsp/lpcxpresso51u68/lpcxpresso51u68.c b/hw/bsp/lpc51/boards/lpcxpresso51u68/lpcxpresso51u68.c
similarity index 100%
rename from hw/bsp/lpcxpresso51u68/lpcxpresso51u68.c
rename to hw/bsp/lpc51/boards/lpcxpresso51u68/lpcxpresso51u68.c
diff --git a/hw/bsp/lpcxpresso51u68/board.mk b/hw/bsp/lpc51/family.mk
similarity index 74%
rename from hw/bsp/lpcxpresso51u68/board.mk
rename to hw/bsp/lpc51/family.mk
index b1a126c51..8a64f0945 100644
--- a/hw/bsp/lpcxpresso51u68/board.mk
+++ b/hw/bsp/lpc51/family.mk
@@ -1,27 +1,26 @@
 SDK_DIR = hw/mcu/nxp/mcux-sdk
 DEPS_SUBMODULES += $(SDK_DIR)
 
+MCU_DIR = $(SDK_DIR)/devices/$(MCU)
+include $(TOP)/$(BOARD_PATH)/board.mk
+
 CFLAGS += \
   -flto \
   -mthumb \
   -mabi=aapcs \
   -mcpu=cortex-m0plus \
-  -DCPU_LPC51U68JBD64 \
   -DCFG_TUSB_MCU=OPT_MCU_LPC51UXX \
-  -DCFG_TUSB_MEM_SECTION='__attribute__((section(".data")))' \
   -DCFG_TUSB_MEM_ALIGN='__attribute__((aligned(64)))'
 
 # mcu driver cause following warnings
 CFLAGS += -Wno-error=unused-parameter
 
-MCU_DIR = $(SDK_DIR)/devices/LPC51U68
-
 # All source paths should be relative to the top level.
-LD_FILE = $(MCU_DIR)/gcc/LPC51U68_flash.ld
+LD_FILE = $(MCU_DIR)/gcc/$(MCU)_flash.ld
 
 SRC_C += \
 	src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c \
-	$(MCU_DIR)/system_LPC51U68.c \
+	$(MCU_DIR)/system_$(MCU).c \
 	$(MCU_DIR)/drivers/fsl_clock.c \
 	$(MCU_DIR)/drivers/fsl_power.c \
 	$(MCU_DIR)/drivers/fsl_reset.c \
@@ -38,15 +37,9 @@ INC += \
 	$(TOP)/$(SDK_DIR)/drivers/lpc_iocon \
 	$(TOP)/$(SDK_DIR)/drivers/lpc_gpio
 
-SRC_S += $(MCU_DIR)/gcc/startup_LPC51U68.S
+SRC_S += $(MCU_DIR)/gcc/startup_$(MCU).S
 
 LIBS += $(TOP)/$(MCU_DIR)/gcc/libpower.a
 
 # For freeRTOS port source
 FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM0
-
-JLINK_DEVICE = LPC51U68
-PYOCD_TARGET = LPC51U68
-
-# flash using pyocd (51u68 is not supported yet)
-flash: flash-pyocd
diff --git a/hw/bsp/lpcxpresso11u37/board.mk b/hw/bsp/lpcxpresso11u37/board.mk
deleted file mode 100644
index 61e5eda7e..000000000
--- a/hw/bsp/lpcxpresso11u37/board.mk
+++ /dev/null
@@ -1,46 +0,0 @@
-DEPS_SUBMODULES += hw/mcu/nxp/lpcopen
-
-CFLAGS += \
-  -flto \
-  -mthumb \
-  -mabi=aapcs \
-  -mcpu=cortex-m0 \
-  -nostdlib \
-  -DCORE_M0 \
-  -D__USE_LPCOPEN \
-  -DCFG_EXAMPLE_MSC_READONLY \
-  -DCFG_EXAMPLE_VIDEO_READONLY \
-  -DCFG_TUSB_MCU=OPT_MCU_LPC11UXX \
-  -DCFG_TUSB_MEM_SECTION='__attribute__((section(".data.$$RAM2")))' \
-  -DCFG_TUSB_MEM_ALIGN='__attribute__((aligned(64)))'
-
-# mcu driver cause following warnings
-CFLAGS += -Wno-error=strict-prototypes -Wno-error=unused-parameter -Wno-error=redundant-decls
-
-MCU_DIR = hw/mcu/nxp/lpcopen/lpc11uxx/lpc_chip_11uxx
-
-# All source paths should be relative to the top level.
-LD_FILE = hw/bsp/$(BOARD)/lpc11u37.ld
-
-SRC_C += \
-	src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c \
-	$(MCU_DIR)/../gcc/cr_startup_lpc11xx.c \
-	$(MCU_DIR)/src/chip_11xx.c \
-	$(MCU_DIR)/src/clock_11xx.c \
-	$(MCU_DIR)/src/gpio_11xx_1.c \
-	$(MCU_DIR)/src/iocon_11xx.c \
-	$(MCU_DIR)/src/sysctl_11xx.c \
-	$(MCU_DIR)/src/sysinit_11xx.c
-
-INC += \
-	$(TOP)/$(MCU_DIR)/inc
-
-# For freeRTOS port source
-FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM0
-
-# For flash-jlink target
-JLINK_DEVICE = LPC11U37/401
-
-# flash using pyocd
-flash: $(BUILD)/$(PROJECT).hex
-	pyocd flash -t lpc11u37 $<
diff --git a/hw/bsp/lpcxpresso11u68/board.mk b/hw/bsp/lpcxpresso11u68/board.mk
deleted file mode 100644
index cd6ad3617..000000000
--- a/hw/bsp/lpcxpresso11u68/board.mk
+++ /dev/null
@@ -1,42 +0,0 @@
-DEPS_SUBMODULES += hw/mcu/nxp/lpcopen
-
-CFLAGS += \
-  -flto \
-  -mthumb \
-  -mabi=aapcs \
-  -mcpu=cortex-m0plus \
-  -nostdlib \
-  -DCORE_M0PLUS \
-  -D__VTOR_PRESENT=0 \
-  -D__USE_LPCOPEN \
-  -DCFG_TUSB_MCU=OPT_MCU_LPC11UXX \
-  -DCFG_TUSB_MEM_SECTION='__attribute__((section(".data.$$RAM3")))' \
-  -DCFG_TUSB_MEM_ALIGN='__attribute__((aligned(64)))'
-
-MCU_DIR = hw/mcu/nxp/lpcopen/lpc11u6x/lpc_chip_11u6x
-
-# All source paths should be relative to the top level.
-LD_FILE = hw/bsp/$(BOARD)/lpc11u68.ld
-
-SRC_C += \
-	src/portable/nxp/lpc_ip3511/dcd_lpc_ip3511.c \
-	$(MCU_DIR)/../gcc/cr_startup_lpc11u6x.c \
-	$(MCU_DIR)/src/chip_11u6x.c \
-	$(MCU_DIR)/src/clock_11u6x.c \
-	$(MCU_DIR)/src/gpio_11u6x.c \
-	$(MCU_DIR)/src/iocon_11u6x.c \
-	$(MCU_DIR)/src/syscon_11u6x.c \
-	$(MCU_DIR)/src/sysinit_11u6x.c
-
-INC += \
-	$(TOP)/$(MCU_DIR)/inc
-
-# For freeRTOS port source
-FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM0
-
-# For flash-jlink target
-JLINK_DEVICE = LPC11U68
-
-# flash using pyocd
-flash: $(BUILD)/$(PROJECT).hex
-	pyocd flash -t lpc11u68 $<
diff --git a/hw/bsp/mbed1768/board.mk b/hw/bsp/mbed1768/board.mk
deleted file mode 100644
index 6940bbb55..000000000
--- a/hw/bsp/mbed1768/board.mk
+++ /dev/null
@@ -1,44 +0,0 @@
-DEPS_SUBMODULES += hw/mcu/nxp/lpcopen
-
-CFLAGS += \
-  -flto \
-  -mthumb \
-  -mabi=aapcs \
-  -mcpu=cortex-m3 \
-  -nostdlib \
-  -DCORE_M3 \
-  -D__USE_LPCOPEN \
-  -DCFG_TUSB_MCU=OPT_MCU_LPC175X_6X \
-  -DRTC_EV_SUPPORT=0
-
-# startup.c and lpc_types.h cause following errors
-CFLAGS += -Wno-error=strict-prototypes -Wno-error=cast-qual
-
-MCU_DIR = hw/mcu/nxp/lpcopen/lpc175x_6x/lpc_chip_175x_6x
-
-# All source paths should be relative to the top level.
-LD_FILE = hw/bsp/$(BOARD)/lpc1768.ld
-
-SRC_C += \
-	src/portable/nxp/lpc17_40/dcd_lpc17_40.c \
-	$(MCU_DIR)/../gcc/cr_startup_lpc175x_6x.c \
-	$(MCU_DIR)/src/chip_17xx_40xx.c \
-	$(MCU_DIR)/src/clock_17xx_40xx.c \
-	$(MCU_DIR)/src/gpio_17xx_40xx.c \
-	$(MCU_DIR)/src/iocon_17xx_40xx.c \
-	$(MCU_DIR)/src/sysctl_17xx_40xx.c \
-	$(MCU_DIR)/src/sysinit_17xx_40xx.c \
-	$(MCU_DIR)/src/uart_17xx_40xx.c
-
-INC += \
-	$(TOP)/$(MCU_DIR)/inc
-
-# For freeRTOS port source
-FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM3
-
-# For flash-jlink target
-JLINK_DEVICE = LPC1768
-
-# flash using pyocd
-flash: $(BUILD)/$(PROJECT).hex
-	pyocd flash -t lpc1768 $<
diff --git a/hw/bsp/samd11/family.mk b/hw/bsp/samd11/family.mk
index dc6678b30..a2a5268aa 100644
--- a/hw/bsp/samd11/family.mk
+++ b/hw/bsp/samd11/family.mk
@@ -9,10 +9,15 @@ CFLAGS += \
   -nostdlib -nostartfiles \
   -DCONF_DFLL_OVERWRITE_CALIBRATION=0 \
   -DOSC32K_OVERWRITE_CALIBRATION=0 \
+  -DCFG_EXAMPLE_MSC_READONLY \
+  -DCFG_EXAMPLE_VIDEO_READONLY \
   -DCFG_TUSB_MCU=OPT_MCU_SAMD11
 
 # suppress warning caused by vendor mcu driver
-CFLAGS += -Wno-error=cast-qual -Wno-error=redundant-decls
+CFLAGS += -Wno-error=redundant-decls
+
+# SAM driver is flooded with -Wcast-qual which slow down complication significantly
+CFLAGS_SKIP += -Wcast-qual
 
 SRC_C += \
 	src/portable/microchip/samd/dcd_samd.c \
diff --git a/hw/bsp/samd21/family.mk b/hw/bsp/samd21/family.mk
index 6d02d7fa6..30eccacb2 100644
--- a/hw/bsp/samd21/family.mk
+++ b/hw/bsp/samd21/family.mk
@@ -13,7 +13,10 @@ CFLAGS += \
   -DCFG_TUSB_MCU=OPT_MCU_SAMD21
 
 # suppress warning caused by vendor mcu driver
-CFLAGS += -Wno-error=cast-qual -Wno-error=redundant-decls
+CFLAGS += -Wno-error=redundant-decls
+
+# SAM driver is flooded with -Wcast-qual which slow down complication significantly
+CFLAGS_SKIP += -Wcast-qual
 
 SRC_C += \
 	src/portable/microchip/samd/dcd_samd.c \
diff --git a/hw/bsp/samd51/family.mk b/hw/bsp/samd51/family.mk
index 3ecc5aa66..657e33438 100644
--- a/hw/bsp/samd51/family.mk
+++ b/hw/bsp/samd51/family.mk
@@ -13,8 +13,8 @@ CFLAGS += \
   -nostdlib -nostartfiles \
   -DCFG_TUSB_MCU=OPT_MCU_SAMD51
 
-# suppress warning caused by vendor mcu driver
-CFLAGS += -Wno-error=cast-qual
+# SAM driver is flooded with -Wcast-qual which slow down complication significantly
+CFLAGS_SKIP += -Wcast-qual
 
 SRC_C += \
 	src/portable/microchip/samd/dcd_samd.c \
diff --git a/hw/bsp/same54xplainedpro/board.mk b/hw/bsp/same54xplainedpro/board.mk
deleted file mode 100644
index 1c6732231..000000000
--- a/hw/bsp/same54xplainedpro/board.mk
+++ /dev/null
@@ -1,48 +0,0 @@
-DEPS_SUBMODULES += hw/mcu/microchip
-
-CONF_CPU_FREQUENCY ?= 48000000
-
-CFLAGS += \
-  -mthumb \
-  -mabi=aapcs \
-  -mlong-calls \
-  -mcpu=cortex-m4 \
-  -mfloat-abi=hard \
-  -mfpu=fpv4-sp-d16 \
-  -nostdlib -nostartfiles \
-  -D__SAME54P20A__ \
-  -DCONF_CPU_FREQUENCY=$(CONF_CPU_FREQUENCY) \
-  -DCFG_TUSB_MCU=OPT_MCU_SAME5X \
-  -DBOARD_NAME="\"Microchip SAM E54 Xplained Pro\""
-
-# suppress warning caused by vendor mcu driver
-CFLAGS += -Wno-error=cast-qual
-
-# All source paths should be relative to the top level.
-LD_FILE = hw/bsp/$(BOARD)/same54p20a_flash.ld
-
-SRC_C += \
-  src/portable/microchip/samd/dcd_samd.c \
-  hw/mcu/microchip/same54/gcc/gcc/startup_same54.c \
-  hw/mcu/microchip/same54/gcc/system_same54.c \
-  hw/mcu/microchip/same54/hal/utils/src/utils_syscalls.c
-
-INC += \
-	$(TOP)/hw/mcu/microchip/same54/ \
-	$(TOP)/hw/mcu/microchip/same54/config \
-	$(TOP)/hw/mcu/microchip/same54/include \
-	$(TOP)/hw/mcu/microchip/same54/hal/include \
-	$(TOP)/hw/mcu/microchip/same54/hal/utils/include \
-	$(TOP)/hw/mcu/microchip/same54/hpl/port \
-	$(TOP)/hw/mcu/microchip/same54/hri \
-	$(TOP)/hw/mcu/microchip/same54/CMSIS/Include
-
-# For freeRTOS port source
-FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM4F
-
-# For flash-jlink target
-JLINK_DEVICE = ATSAME54P20
-
-# flash using edbg from https://github.com/ataradov/edbg
-flash: $(BUILD)/$(PROJECT).bin
-	edbg --verbose -t same54 -pv -f $<
diff --git a/hw/bsp/same5x/boards/d5035_01/board.mk b/hw/bsp/same5x/boards/d5035_01/board.mk
new file mode 100644
index 000000000..c53411bb8
--- /dev/null
+++ b/hw/bsp/same5x/boards/d5035_01/board.mk
@@ -0,0 +1,21 @@
+MCU = same51
+
+HWREV ?= 1
+
+CFLAGS += \
+  -D__SAME51J19A__ \
+  -DCONF_CPU_FREQUENCY=80000000 \
+  -DCONF_GCLK_USB_FREQUENCY=48000000 \
+  -DD5035_01=1 \
+  -DBOARD_NAME="\"D5035-01\"" \
+  -DSVC_Handler=SVCall_Handler \
+  -DHWREV=$(HWREV)
+
+# All source paths should be relative to the top level.
+LD_FILE = $(BOARD_PATH)/same51j19a_flash.ld
+
+# For flash-jlink target
+JLINK_DEVICE = ATSAME51J19
+
+# flash using jlink
+flash: flash-jlink
diff --git a/hw/bsp/d5035_01/d5035_01.c b/hw/bsp/same5x/boards/d5035_01/d5035_01.c
similarity index 100%
rename from hw/bsp/d5035_01/d5035_01.c
rename to hw/bsp/same5x/boards/d5035_01/d5035_01.c
diff --git a/hw/bsp/d5035_01/same51j19a_flash.ld b/hw/bsp/same5x/boards/d5035_01/same51j19a_flash.ld
similarity index 100%
rename from hw/bsp/d5035_01/same51j19a_flash.ld
rename to hw/bsp/same5x/boards/d5035_01/same51j19a_flash.ld
diff --git a/hw/bsp/same5x/boards/same54_xplained/board.mk b/hw/bsp/same5x/boards/same54_xplained/board.mk
new file mode 100644
index 000000000..41cf95bfc
--- /dev/null
+++ b/hw/bsp/same5x/boards/same54_xplained/board.mk
@@ -0,0 +1,12 @@
+MCU = same54
+
+CFLAGS += \
+  -DCONF_CPU_FREQUENCY=48000000 \
+  -D__SAME54P20A__ \
+  -DBOARD_NAME="\"Microchip SAM E54 Xplained Pro\""
+
+# All source paths should be relative to the top level.
+LD_FILE = $(BOARD_PATH)/same54p20a_flash.ld
+
+# For flash-jlink target
+JLINK_DEVICE = ATSAME54P20
diff --git a/hw/bsp/same54xplainedpro/same54xplainedpro.c b/hw/bsp/same5x/boards/same54_xplained/same54_xplained.c
similarity index 100%
rename from hw/bsp/same54xplainedpro/same54xplainedpro.c
rename to hw/bsp/same5x/boards/same54_xplained/same54_xplained.c
diff --git a/hw/bsp/same54xplainedpro/same54p20a_flash.ld b/hw/bsp/same5x/boards/same54_xplained/same54p20a_flash.ld
similarity index 100%
rename from hw/bsp/same54xplainedpro/same54p20a_flash.ld
rename to hw/bsp/same5x/boards/same54_xplained/same54p20a_flash.ld
diff --git a/hw/bsp/same54xplainedpro/same54p20a_sram.ld b/hw/bsp/same5x/boards/same54_xplained/same54p20a_sram.ld
similarity index 100%
rename from hw/bsp/same54xplainedpro/same54p20a_sram.ld
rename to hw/bsp/same5x/boards/same54_xplained/same54p20a_sram.ld
diff --git a/hw/bsp/same5x/family.mk b/hw/bsp/same5x/family.mk
new file mode 100644
index 000000000..df1af4a9d
--- /dev/null
+++ b/hw/bsp/same5x/family.mk
@@ -0,0 +1,42 @@
+DEPS_SUBMODULES += hw/mcu/microchip
+
+SDK_DIR = hw/mcu/microchip/$(MCU)
+include $(TOP)/$(BOARD_PATH)/board.mk
+
+CFLAGS += \
+  -mthumb \
+  -mabi=aapcs \
+  -mlong-calls \
+  -mcpu=cortex-m4 \
+  -mfloat-abi=hard \
+  -mfpu=fpv4-sp-d16 \
+  -nostdlib -nostartfiles \
+  -DCFG_TUSB_MCU=OPT_MCU_SAME5X
+
+# SAM driver is flooded with -Wcast-qual which slow down complication significantly
+CFLAGS_SKIP += -Wcast-qual
+
+SRC_C += \
+  src/portable/microchip/samd/dcd_samd.c \
+  $(SDK_DIR)/gcc/gcc/startup_$(MCU).c \
+  $(SDK_DIR)/gcc/system_$(MCU).c \
+  $(SDK_DIR)/hal/utils/src/utils_syscalls.c
+
+INC += \
+	$(TOP)/$(SDK_DIR) \
+	$(TOP)/$(SDK_DIR)/config \
+	$(TOP)/$(SDK_DIR)/include \
+	$(TOP)/$(SDK_DIR)/hal/include \
+	$(TOP)/$(SDK_DIR)/hal/utils/include \
+	$(TOP)/$(SDK_DIR)/hpl/port \
+	$(TOP)/$(SDK_DIR)/hri \
+	$(TOP)/$(SDK_DIR)/CMSIS/Include
+
+# For freeRTOS port source
+FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM4F
+
+# flash using edbg from https://github.com/ataradov/edbg
+flash-edbg: $(BUILD)/$(PROJECT).bin
+	edbg --verbose -t $(MCU) -pv -f $<
+
+flash: flash-edbg
diff --git a/hw/bsp/same70_qmtech/board.mk b/hw/bsp/same70_qmtech/board.mk
index 1dcb8bfcd..ad5af2020 100644
--- a/hw/bsp/same70_qmtech/board.mk
+++ b/hw/bsp/same70_qmtech/board.mk
@@ -11,7 +11,10 @@ CFLAGS += \
   -DCFG_TUSB_MCU=OPT_MCU_SAMX7X
 
 # suppress following warnings from mcu driver
-CFLAGS += -Wno-error=unused-parameter -Wno-error=cast-align -Wno-error=cast-qual -Wno-error=redundant-decls
+CFLAGS += -Wno-error=unused-parameter -Wno-error=cast-align -Wno-error=redundant-decls
+
+# SAM driver is flooded with -Wcast-qual which slow down complication significantly
+CFLAGS_SKIP += -Wcast-qual
 
 ASF_DIR = hw/mcu/microchip/same70
 
diff --git a/hw/bsp/same70_xplained/board.mk b/hw/bsp/same70_xplained/board.mk
index 95c4aaaa2..769d03e21 100644
--- a/hw/bsp/same70_xplained/board.mk
+++ b/hw/bsp/same70_xplained/board.mk
@@ -11,7 +11,10 @@ CFLAGS += \
   -DCFG_TUSB_MCU=OPT_MCU_SAMX7X
 
 # suppress following warnings from mcu driver
-CFLAGS += -Wno-error=unused-parameter -Wno-error=cast-align -Wno-error=cast-qual -Wno-error=redundant-decls
+CFLAGS += -Wno-error=unused-parameter -Wno-error=cast-align -Wno-error=redundant-decls
+
+# SAM driver is flooded with -Wcast-qual which slow down complication significantly
+CFLAGS_SKIP += -Wcast-qual
 
 ASF_DIR = hw/mcu/microchip/same70
 
diff --git a/hw/bsp/samg55xplained/board.mk b/hw/bsp/samg55xplained/board.mk
index 7cc9487fd..ed0d59772 100644
--- a/hw/bsp/samg55xplained/board.mk
+++ b/hw/bsp/samg55xplained/board.mk
@@ -12,7 +12,10 @@ CFLAGS += \
   -DCFG_TUSB_MCU=OPT_MCU_SAMG
 
 # suppress following warnings from mcu driver
-CFLAGS += -Wno-error=undef -Wno-error=cast-qual -Wno-error=null-dereference -Wno-error=redundant-decls
+CFLAGS += -Wno-error=undef -Wno-error=null-dereference -Wno-error=redundant-decls
+
+# SAM driver is flooded with -Wcast-qual which slow down complication significantly
+CFLAGS_SKIP += -Wcast-qual
 
 ASF_DIR = hw/mcu/microchip/samg55
 
diff --git a/hw/bsp/saml2x/family.mk b/hw/bsp/saml2x/family.mk
index 6022158de..91c2cfa61 100644
--- a/hw/bsp/saml2x/family.mk
+++ b/hw/bsp/saml2x/family.mk
@@ -14,7 +14,10 @@ CFLAGS += \
   -DCFG_TUSB_MCU=OPT_MCU_SAML22
 
 # suppress warning caused by vendor mcu driver
-CFLAGS += -Wno-error=cast-qual -Wno-error=redundant-decls
+CFLAGS += -Wno-error=redundant-decls
+
+# SAM driver is flooded with -Wcast-qual which slow down complication significantly
+CFLAGS_SKIP += -Wcast-qual
 
 SRC_C += \
 	src/portable/microchip/samd/dcd_samd.c \
diff --git a/hw/bsp/stm32f207nucleo/STM32F207ZGTx_FLASH.ld b/hw/bsp/stm32f2/boards/stm32f207nucleo/STM32F207ZGTx_FLASH.ld
similarity index 100%
rename from hw/bsp/stm32f207nucleo/STM32F207ZGTx_FLASH.ld
rename to hw/bsp/stm32f2/boards/stm32f207nucleo/STM32F207ZGTx_FLASH.ld
diff --git a/hw/bsp/stm32f2/boards/stm32f207nucleo/board.mk b/hw/bsp/stm32f2/boards/stm32f207nucleo/board.mk
new file mode 100644
index 000000000..ba185d199
--- /dev/null
+++ b/hw/bsp/stm32f2/boards/stm32f207nucleo/board.mk
@@ -0,0 +1,14 @@
+CFLAGS += \
+  -DSTM32F207xx \
+
+# All source paths should be relative to the top level.
+LD_FILE = $(BOARD_PATH)/STM32F207ZGTx_FLASH.ld
+
+SRC_S += \
+  $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f207xx.s
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f207zg
+
+# flash target using on-board stlink
+flash: flash-stlink
diff --git a/hw/bsp/stm32f207nucleo/stm32f207nucleo.c b/hw/bsp/stm32f2/boards/stm32f207nucleo/stm32f207nucleo.c
similarity index 99%
rename from hw/bsp/stm32f207nucleo/stm32f207nucleo.c
rename to hw/bsp/stm32f2/boards/stm32f207nucleo/stm32f207nucleo.c
index 80f762c93..48203b787 100644
--- a/hw/bsp/stm32f207nucleo/stm32f207nucleo.c
+++ b/hw/bsp/stm32f2/boards/stm32f207nucleo/stm32f207nucleo.c
@@ -24,7 +24,7 @@
  * This file is part of the TinyUSB stack.
  */
 
-#include "../board.h"
+#include "bsp/board.h"
 
 #include "stm32f2xx_hal.h"
 
diff --git a/hw/bsp/stm32f207nucleo/board.mk b/hw/bsp/stm32f2/family.mk
similarity index 68%
rename from hw/bsp/stm32f207nucleo/board.mk
rename to hw/bsp/stm32f2/family.mk
index 55581e1ec..7ca378548 100644
--- a/hw/bsp/stm32f207nucleo/board.mk
+++ b/hw/bsp/stm32f2/family.mk
@@ -1,9 +1,15 @@
 ST_FAMILY = f2
-DEPS_SUBMODULES += lib/CMSIS_5 hw/mcu/st/cmsis_device_$(ST_FAMILY) hw/mcu/st/stm32$(ST_FAMILY)xx_hal_driver
 
 ST_CMSIS = hw/mcu/st/cmsis_device_$(ST_FAMILY)
 ST_HAL_DRIVER = hw/mcu/st/stm32$(ST_FAMILY)xx_hal_driver
 
+DEPS_SUBMODULES += \
+	lib/CMSIS_5 \
+	$(ST_CMSIS) \
+	$(ST_HAL_DRIVER)
+
+include $(TOP)/$(BOARD_PATH)/board.mk
+
 CFLAGS += \
   -flto \
   -mthumb \
@@ -11,15 +17,11 @@ CFLAGS += \
   -mcpu=cortex-m3 \
   -mfloat-abi=soft \
   -nostdlib -nostartfiles \
-  -DSTM32F207xx \
   -DCFG_TUSB_MCU=OPT_MCU_STM32F2
 
 # mcu driver cause following warnings
 CFLAGS += -Wno-error=sign-compare
 
-# All source paths should be relative to the top level.
-LD_FILE = hw/bsp/$(BOARD)/STM32F207ZGTx_FLASH.ld
-
 SRC_C += \
   src/portable/synopsys/dwc2/dcd_dwc2.c \
   $(ST_CMSIS)/Source/Templates/system_stm32$(ST_FAMILY)xx.c \
@@ -29,20 +31,11 @@ SRC_C += \
   $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_rcc_ex.c \
   $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_gpio.c
 
-SRC_S += \
-  $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f207xx.s
-
 INC += \
   $(TOP)/lib/CMSIS_5/CMSIS/Core/Include \
   $(TOP)/$(ST_CMSIS)/Include \
   $(TOP)/$(ST_HAL_DRIVER)/Inc \
-  $(TOP)/hw/bsp/$(BOARD)
+  $(TOP)/$(BOARD_PATH)
 
 # For freeRTOS port source
 FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM3
-
-# For flash-jlink target
-JLINK_DEVICE = stm32f207zg
-
-# flash target using on-board stlink
-flash: flash-stlink
diff --git a/hw/bsp/stm32f207nucleo/stm32f2xx_hal_conf.h b/hw/bsp/stm32f2/stm32f2xx_hal_conf.h
similarity index 100%
rename from hw/bsp/stm32f207nucleo/stm32f2xx_hal_conf.h
rename to hw/bsp/stm32f2/stm32f2xx_hal_conf.h
diff --git a/hw/bsp/stm32f303disco/STM32F303VCTx_FLASH.ld b/hw/bsp/stm32f3/boards/stm32f303disco/STM32F303VCTx_FLASH.ld
similarity index 100%
rename from hw/bsp/stm32f303disco/STM32F303VCTx_FLASH.ld
rename to hw/bsp/stm32f3/boards/stm32f303disco/STM32F303VCTx_FLASH.ld
diff --git a/hw/bsp/stm32f3/boards/stm32f303disco/board.mk b/hw/bsp/stm32f3/boards/stm32f303disco/board.mk
new file mode 100644
index 000000000..e387f2d54
--- /dev/null
+++ b/hw/bsp/stm32f3/boards/stm32f303disco/board.mk
@@ -0,0 +1,14 @@
+CFLAGS += \
+  -DSTM32F303xC \
+
+# All source paths should be relative to the top level.
+LD_FILE = $(BOARD_PATH)/STM32F303VCTx_FLASH.ld
+
+SRC_S += \
+  $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f303xc.s
+
+# For flash-jlink target
+JLINK_DEVICE = stm32f303vc
+
+# flash target using on-board stlink
+flash: flash-stlink
diff --git a/hw/bsp/stm32f303disco/stm32f303disco.c b/hw/bsp/stm32f3/boards/stm32f303disco/stm32f303disco.c
similarity index 100%
rename from hw/bsp/stm32f303disco/stm32f303disco.c
rename to hw/bsp/stm32f3/boards/stm32f303disco/stm32f303disco.c
diff --git a/hw/bsp/stm32f303disco/stm32f3xx_hal_conf.h b/hw/bsp/stm32f3/boards/stm32f303disco/stm32f3xx_hal_conf.h
similarity index 100%
rename from hw/bsp/stm32f303disco/stm32f3xx_hal_conf.h
rename to hw/bsp/stm32f3/boards/stm32f303disco/stm32f3xx_hal_conf.h
diff --git a/hw/bsp/stm32f303disco/board.mk b/hw/bsp/stm32f3/family.mk
similarity index 69%
rename from hw/bsp/stm32f303disco/board.mk
rename to hw/bsp/stm32f3/family.mk
index b81de4ee4..f3b21d530 100644
--- a/hw/bsp/stm32f303disco/board.mk
+++ b/hw/bsp/stm32f3/family.mk
@@ -1,9 +1,15 @@
 ST_FAMILY = f3
-DEPS_SUBMODULES += lib/CMSIS_5 hw/mcu/st/cmsis_device_$(ST_FAMILY) hw/mcu/st/stm32$(ST_FAMILY)xx_hal_driver
 
 ST_CMSIS = hw/mcu/st/cmsis_device_$(ST_FAMILY)
 ST_HAL_DRIVER = hw/mcu/st/stm32$(ST_FAMILY)xx_hal_driver
 
+DEPS_SUBMODULES += \
+	lib/CMSIS_5 \
+	$(ST_CMSIS) \
+	$(ST_HAL_DRIVER)
+
+include $(TOP)/$(BOARD_PATH)/board.mk
+
 CFLAGS += \
   -flto \
   -mthumb \
@@ -12,15 +18,11 @@ CFLAGS += \
   -mfloat-abi=hard \
   -mfpu=fpv4-sp-d16 \
   -nostdlib -nostartfiles \
-  -DSTM32F303xC \
   -DCFG_TUSB_MCU=OPT_MCU_STM32F3
 
 # mcu driver cause following warnings
 CFLAGS += -Wno-error=unused-parameter
 
-# All source paths should be relative to the top level.
-LD_FILE = hw/bsp/$(BOARD)/STM32F303VCTx_FLASH.ld
-
 SRC_C += \
   src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c \
   $(ST_CMSIS)/Source/Templates/system_stm32$(ST_FAMILY)xx.c \
@@ -30,20 +32,11 @@ SRC_C += \
   $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_rcc_ex.c \
   $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_gpio.c
 
-SRC_S += \
-  $(ST_CMSIS)/Source/Templates/gcc/startup_stm32f303xc.s
-
 INC += \
   $(TOP)/lib/CMSIS_5/CMSIS/Core/Include \
   $(TOP)/$(ST_CMSIS)/Include \
   $(TOP)/$(ST_HAL_DRIVER)/Inc \
-  $(TOP)/hw/bsp/$(BOARD)
+  $(TOP)/$(BOARD_PATH)
 
 # For freeRTOS port source
 FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM4F
-
-# For flash-jlink target
-JLINK_DEVICE = stm32f303vc
-
-# flash target using on-board stlink
-flash: flash-stlink
diff --git a/hw/bsp/stm32l0/boards/stm32l052dap52/board.mk b/hw/bsp/stm32l0/boards/stm32l052dap52/board.mk
index 84662344d..0b1348474 100644
--- a/hw/bsp/stm32l0/boards/stm32l052dap52/board.mk
+++ b/hw/bsp/stm32l0/boards/stm32l052dap52/board.mk
@@ -1,4 +1,5 @@
-CFLAGS += -DSTM32L052xx -DCFG_EXAMPLE_VIDEO_READONLY
+CFLAGS += \
+	-DSTM32L052xx
 
 LD_FILE = $(BOARD_PATH)/STM32L052K8Ux_FLASH.ld
 
diff --git a/hw/bsp/stm32l0538disco/STM32L053C8Tx_FLASH.ld b/hw/bsp/stm32l0/boards/stm32l0538disco/STM32L053C8Tx_FLASH.ld
similarity index 100%
rename from hw/bsp/stm32l0538disco/STM32L053C8Tx_FLASH.ld
rename to hw/bsp/stm32l0/boards/stm32l0538disco/STM32L053C8Tx_FLASH.ld
diff --git a/hw/bsp/stm32l0538disco/stm32l0538disco.c b/hw/bsp/stm32l0/boards/stm32l0538disco/board.h
similarity index 51%
rename from hw/bsp/stm32l0538disco/stm32l0538disco.c
rename to hw/bsp/stm32l0/boards/stm32l0538disco/board.h
index 46f6f0ff6..0722e3102 100644
--- a/hw/bsp/stm32l0538disco/stm32l0538disco.c
+++ b/hw/bsp/stm32l0/boards/stm32l0538disco/board.h
@@ -1,7 +1,7 @@
 /*
  * The MIT License (MIT)
  *
- * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ * Copyright (c) 2020, 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
@@ -24,45 +24,35 @@
  * This file is part of the TinyUSB stack.
  */
 
-#include "../board.h"
-#include "stm32l0xx_hal.h"
+#ifndef BOARD_H_
+#define BOARD_H_
 
-//--------------------------------------------------------------------+
-// Forward USB interrupt events to TinyUSB IRQ Handler
-//--------------------------------------------------------------------+
-void USB_IRQHandler(void)
-{
-  tud_int_handler(0);
-}
+#ifdef __cplusplus
+ extern "C" {
+#endif
 
-//--------------------------------------------------------------------+
-// MACRO TYPEDEF CONSTANT ENUM
-//--------------------------------------------------------------------+
+// LED
 #define LED_PORT              GPIOA
 #define LED_PIN               GPIO_PIN_5
 #define LED_STATE_ON          1
 
+// Button
 #define BUTTON_PORT           GPIOA
 #define BUTTON_PIN            GPIO_PIN_0
 #define BUTTON_STATE_ACTIVE   1
 
-/**
-  * @brief  System Clock Configuration
-  *         The system Clock is configured as follow:
-  *         HSI48 used as USB clock source
-  *              - System Clock source            = HSI
-  *              - HSI Frequency(Hz)              = 16000000
-  *              - SYSCLK(Hz)                     = 16000000
-  *              - HCLK(Hz)                       = 16000000
-  *              - AHB Prescaler                  = 1
-  *              - APB1 Prescaler                 = 1
-  *              - APB2 Prescaler                 = 1
-  *              - Flash Latency(WS)              = 0
-  *              - Main regulator output voltage  = Scale1 mode
-  * @param  None
-  * @retval None
-  */
-static void SystemClock_Config(void)
+// UART
+//#define UART_DEV              USART2
+//#define UART_CLK_EN           __HAL_RCC_USART2_CLK_ENABLE
+//#define UART_GPIO_PORT        GPIOA
+//#define UART_GPIO_AF          GPIO_AF4_USART2
+//#define UART_TX_PIN           GPIO_PIN_2
+//#define UART_RX_PIN           GPIO_PIN_3
+
+//--------------------------------------------------------------------+
+// RCC Clock
+//--------------------------------------------------------------------+
+static inline void board_stm32l0_clock_init(void)
 {
   RCC_ClkInitTypeDef RCC_ClkInitStruct;
   RCC_OscInitTypeDef RCC_OscInitStruct;
@@ -108,99 +98,12 @@ static void SystemClock_Config(void)
   HAL_RCCEx_CRSConfig (&RCC_CRSInitStruct);
 }
 
-void board_init(void)
+static inline void board_vbus_sense_init(void)
 {
-  SystemClock_Config();
+}
 
-#if CFG_TUSB_OS  == OPT_OS_NONE
-  // 1ms tick timer
-  SysTick_Config(SystemCoreClock / 1000);
-#elif CFG_TUSB_OS == OPT_OS_FREERTOS
-  // If freeRTOS is used, IRQ priority is limit by max syscall ( smaller is higher )
-  //NVIC_SetPriority(USB0_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY );
+#ifdef __cplusplus
+ }
 #endif
 
-  GPIO_InitTypeDef  GPIO_InitStruct;
-
-  // LED
-  __HAL_RCC_GPIOA_CLK_ENABLE();
-  GPIO_InitStruct.Pin = LED_PIN;
-  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
-  GPIO_InitStruct.Pull = GPIO_PULLUP;
-  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
-  HAL_GPIO_Init(LED_PORT, &GPIO_InitStruct);
-
-  board_led_write(false);
-
-  // Button
-  //__HAL_RCC_GPIOA_CLK_ENABLE();
-  GPIO_InitStruct.Pin = BUTTON_PIN;
-  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
-  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
-  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
-  HAL_GPIO_Init(BUTTON_PORT, &GPIO_InitStruct);
-
-  // USB
-  /* Configure DM DP Pins */
-  __HAL_RCC_GPIOA_CLK_ENABLE();
-  GPIO_InitStruct.Pin = (GPIO_PIN_11 | GPIO_PIN_12);
-  GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
-  GPIO_InitStruct.Pull = GPIO_NOPULL;
-  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
-  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
-
-  /* Enable USB FS Clock */
-  __HAL_RCC_USB_CLK_ENABLE();
-}
-
-//--------------------------------------------------------------------+
-// Board porting API
-//--------------------------------------------------------------------+
-
-void board_led_write(bool state)
-{
-  HAL_GPIO_WritePin(LED_PORT, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
-}
-
-uint32_t board_button_read(void)
-{
-  return BUTTON_STATE_ACTIVE == HAL_GPIO_ReadPin(BUTTON_PORT, BUTTON_PIN);
-}
-
-int board_uart_read(uint8_t* buf, int len)
-{
-  (void) buf; (void) len;
-  return 0;
-}
-
-int board_uart_write(void const * buf, int len)
-{
-  (void) buf; (void) len;
-  return 0;
-}
-
-#if CFG_TUSB_OS  == OPT_OS_NONE
-volatile uint32_t system_ticks = 0;
-void SysTick_Handler (void)
-{
-  HAL_IncTick();
-  system_ticks++;
-}
-
-uint32_t board_millis(void)
-{
-  return system_ticks;
-}
-#endif
-
-void HardFault_Handler (void)
-{
-  asm("bkpt");
-}
-
-// Required by __libc_init_array in startup code if we are compiling using
-// -nostdlib/-nostartfiles.
-void _init(void)
-{
-
-}
+#endif /* BOARD_H_ */
diff --git a/hw/bsp/stm32l0/boards/stm32l0538disco/board.mk b/hw/bsp/stm32l0/boards/stm32l0538disco/board.mk
new file mode 100644
index 000000000..deed519ba
--- /dev/null
+++ b/hw/bsp/stm32l0/boards/stm32l0538disco/board.mk
@@ -0,0 +1,14 @@
+CFLAGS += \
+  -DSTM32L053xx
+
+# All source paths should be relative to the top level.
+LD_FILE = $(BOARD_PATH)/STM32L053C8Tx_FLASH.ld
+
+SRC_S += \
+  $(ST_CMSIS)/Source/Templates/gcc/startup_stm32l053xx.s
+
+# For flash-jlink target
+JLINK_DEVICE = STM32L053R8
+
+# flash target using on-board stlink
+flash: flash-stlink
diff --git a/hw/bsp/stm32l0/family.c b/hw/bsp/stm32l0/family.c
index 6bce88b39..89749fb50 100644
--- a/hw/bsp/stm32l0/family.c
+++ b/hw/bsp/stm32l0/family.c
@@ -39,21 +39,14 @@ void USB_IRQHandler(void)
 //--------------------------------------------------------------------+
 // MACRO TYPEDEF CONSTANT ENUM
 //--------------------------------------------------------------------+
+#ifdef UART_DEV
 UART_HandleTypeDef UartHandle;
+#endif
 
 void board_init(void)
 {
   board_stm32l0_clock_init();
 
-  // Enable All GPIOs clocks
-  __HAL_RCC_GPIOA_CLK_ENABLE();
-  __HAL_RCC_GPIOB_CLK_ENABLE();
-  __HAL_RCC_GPIOC_CLK_ENABLE();
-  __HAL_RCC_GPIOD_CLK_ENABLE();
-
-  // Enable UART Clock
-  UART_CLK_EN();
-
 #if CFG_TUSB_OS == OPT_OS_NONE
   // 1ms tick timer
   SysTick_Config(SystemCoreClock / 1000);
@@ -66,6 +59,12 @@ void board_init(void)
   NVIC_SetPriority(USB_IRQn, configLIBRARY_MAX_SYSCALL_INTERRUPT_PRIORITY);
 #endif
 
+  // Enable All GPIOs clocks
+  __HAL_RCC_GPIOA_CLK_ENABLE();
+  __HAL_RCC_GPIOB_CLK_ENABLE();
+  __HAL_RCC_GPIOC_CLK_ENABLE();
+  __HAL_RCC_GPIOD_CLK_ENABLE();
+
   // LED
   GPIO_InitTypeDef  GPIO_InitStruct;
   GPIO_InitStruct.Pin = LED_PIN;
@@ -74,6 +73,8 @@ void board_init(void)
   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
   HAL_GPIO_Init(LED_PORT, &GPIO_InitStruct);
 
+  board_led_write(false);
+
   // Button
   GPIO_InitStruct.Pin = BUTTON_PIN;
   GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
@@ -81,7 +82,10 @@ void board_init(void)
   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
   HAL_GPIO_Init(BUTTON_PORT, &GPIO_InitStruct);
 
-  // Uart
+#ifdef UART_DEV
+  // Enable UART Clock
+  UART_CLK_EN();
+
   GPIO_InitStruct.Pin       = UART_TX_PIN | UART_RX_PIN;
   GPIO_InitStruct.Mode      = GPIO_MODE_AF_PP;
   GPIO_InitStruct.Pull      = GPIO_PULLUP;
@@ -98,13 +102,14 @@ void board_init(void)
   UartHandle.Init.Mode       = UART_MODE_TX_RX;
   UartHandle.Init.OverSampling = UART_OVERSAMPLING_16;
   HAL_UART_Init(&UartHandle);
+#endif
 
   // USB Pins
   // Configure USB DM and DP pins. This is optional, and maintained only for user guidance.
   GPIO_InitStruct.Pin = (GPIO_PIN_11 | GPIO_PIN_12);
   GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
   GPIO_InitStruct.Pull = GPIO_NOPULL;
-  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
   // USB Clock enable
@@ -133,8 +138,13 @@ int board_uart_read(uint8_t* buf, int len)
 
 int board_uart_write(void const * buf, int len)
 {
+#ifdef UART_DEV
   HAL_UART_Transmit(&UartHandle, (uint8_t*)(uintptr_t) buf, len, 0xffff);
   return len;
+#else
+  (void) buf; (void) len;
+  return 0;
+#endif
 }
 
 #if CFG_TUSB_OS  == OPT_OS_NONE
diff --git a/hw/bsp/stm32l0/family.mk b/hw/bsp/stm32l0/family.mk
index 67a5c69b8..f069ae8f0 100644
--- a/hw/bsp/stm32l0/family.mk
+++ b/hw/bsp/stm32l0/family.mk
@@ -1,5 +1,8 @@
 ST_FAMILY = l0
-DEPS_SUBMODULES += lib/CMSIS_5 hw/mcu/st/cmsis_device_$(ST_FAMILY) hw/mcu/st/stm32$(ST_FAMILY)xx_hal_driver
+DEPS_SUBMODULES += \
+	lib/CMSIS_5 \
+	hw/mcu/st/cmsis_device_$(ST_FAMILY) \
+	hw/mcu/st/stm32$(ST_FAMILY)xx_hal_driver
 
 ST_CMSIS = hw/mcu/st/cmsis_device_$(ST_FAMILY)
 ST_HAL_DRIVER = hw/mcu/st/stm32$(ST_FAMILY)xx_hal_driver
@@ -17,8 +20,12 @@ CFLAGS += \
   -DCFG_EXAMPLE_VIDEO_READONLY \
   -DCFG_TUSB_MCU=OPT_MCU_STM32L0
 
-# suppress warning caused by vendor mcu driver
-CFLAGS += -Wno-error=unused-parameter -Wno-error=redundant-decls -Wno-error=cast-align -Wno-error=maybe-uninitialized
+# mcu driver cause following warnings
+CFLAGS += \
+	-Wno-error=unused-parameter \
+	-Wno-error=redundant-decls \
+	-Wno-error=cast-align \
+	-Wno-error=maybe-uninitialized
 
 SRC_C += \
   src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c \
diff --git a/hw/bsp/stm32l0/stm32l0xx_hal_conf.h b/hw/bsp/stm32l0/stm32l0xx_hal_conf.h
index e3a131043..fd109bc8c 100644
--- a/hw/bsp/stm32l0/stm32l0xx_hal_conf.h
+++ b/hw/bsp/stm32l0/stm32l0xx_hal_conf.h
@@ -2,19 +2,41 @@
   ******************************************************************************
   * @file    stm32l0xx_hal_conf.h
   * @author  MCD Application Team
-  * @brief   HAL configuration template file.
-  *          This file should be copied to the application folder and renamed
-  *          to stm32l0xx_hal_conf.h.
+  * @brief   HAL configuration file.
   ******************************************************************************
-  * @attention
   *
-  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
-  * All rights reserved.</center></h2>
+  * Copyright (c) 2016 STMicroelectronics International N.V. All rights reserved.
   *
-  * This software component is licensed by ST under BSD 3-Clause license,
-  * the "License"; You may not use this file except in compliance with the
-  * License. You may obtain a copy of the License at:
-  *                        opensource.org/licenses/BSD-3-Clause
+  * Redistribution and use in source and binary forms, with or without
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice,
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other
+  *    contributors to this software may be used to endorse or promote products
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under
+  *    this license is void and will automatically terminate your rights under
+  *    this license.
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   ******************************************************************************
   */
@@ -35,35 +57,37 @@
   * @brief This is the list of modules to be used in the HAL driver
   */
 #define HAL_MODULE_ENABLED
-/*#define HAL_ADC_MODULE_ENABLED */
-/*#define HAL_COMP_MODULE_ENABLED */
-/*#define HAL_CRC_MODULE_ENABLED */
-/*#define HAL_CRYP_MODULE_ENABLED */
-/*#define HAL_DAC_MODULE_ENABLED */
+// #define HAL_ADC_MODULE_ENABLED
+/* #define HAL_COMP_MODULE_ENABLED */
+/* #define HAL_CRC_MODULE_ENABLED */
+/* #define HAL_CRYP_MODULE_ENABLED */
+/* #define HAL_DAC_MODULE_ENABLED */
 #define HAL_DMA_MODULE_ENABLED
-/*#define HAL_FIREWALL_MODULE_ENABLED */
+/* #define HAL_FIREWALL_MODULE_ENABLED */
 #define HAL_FLASH_MODULE_ENABLED
 #define HAL_GPIO_MODULE_ENABLED
-/*#define HAL_I2C_MODULE_ENABLED */
-/*#define HAL_I2S_MODULE_ENABLED */
-/*#define HAL_IWDG_MODULE_ENABLED */
-/*#define HAL_LCD_MODULE_ENABLED */
-/*#define HAL_LPTIM_MODULE_ENABLED */
+/* #define HAL_I2C_MODULE_ENABLED */
+/* #define HAL_I2S_MODULE_ENABLED */
+/* #define HAL_IWDG_MODULE_ENABLED */
+/* #define HAL_LCD_MODULE_ENABLED */
+/* #define HAL_LPTIM_MODULE_ENABLED */
 #define HAL_PWR_MODULE_ENABLED
 #define HAL_RCC_MODULE_ENABLED
-/*#define HAL_RNG_MODULE_ENABLED */
-/*#define HAL_RTC_MODULE_ENABLED */
-/*#define HAL_SPI_MODULE_ENABLED */
-/*#define HAL_TIM_MODULE_ENABLED */
-/*#define HAL_TSC_MODULE_ENABLED */
+//#define HAL_RNG_MODULE_ENABLED
+/* #define HAL_RTC_MODULE_ENABLED */
+//#define HAL_SPI_MODULE_ENABLED
+/* #define HAL_TIM_MODULE_ENABLED */
+/* #define HAL_TSC_MODULE_ENABLED */
 #define HAL_UART_MODULE_ENABLED
-/*#define HAL_USART_MODULE_ENABLED */
-/*#define HAL_IRDA_MODULE_ENABLED */
-/*#define HAL_SMARTCARD_MODULE_ENABLED */
-/*#define HAL_SMBUS_MODULE_ENABLED */
-/*#define HAL_WWDG_MODULE_ENABLED */
+/* #define HAL_USART_MODULE_ENABLED */
+/* #define HAL_IRDA_MODULE_ENABLED */
+/* #define HAL_SMARTCARD_MODULE_ENABLED */
+/* #define HAL_SMBUS_MODULE_ENABLED */
+/* #define HAL_WWDG_MODULE_ENABLED */
+//#define HAL_PCD_MODULE_ENABLED
 #define HAL_CORTEX_MODULE_ENABLED
-#define HAL_PCD_MODULE_ENABLED
+/* #define HAL_PCD_MODULE_ENABLED */
+
 
 /* ########################## Oscillator Values adaptation ####################*/
 /**
@@ -322,7 +346,7 @@
   */
   #define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
 /* Exported functions ------------------------------------------------------- */
-  void assert_failed(uint8_t* file, uint32_t line);
+  void assert_failed(uint8_t *file, uint32_t line);
 #else
   #define assert_param(expr) ((void)0U)
 #endif /* USE_FULL_ASSERT */
diff --git a/hw/bsp/stm32l0538disco/board.mk b/hw/bsp/stm32l0538disco/board.mk
deleted file mode 100644
index 72e887adf..000000000
--- a/hw/bsp/stm32l0538disco/board.mk
+++ /dev/null
@@ -1,54 +0,0 @@
-ST_FAMILY = l0
-DEPS_SUBMODULES += lib/CMSIS_5 hw/mcu/st/cmsis_device_$(ST_FAMILY) hw/mcu/st/stm32$(ST_FAMILY)xx_hal_driver
-
-ST_CMSIS = hw/mcu/st/cmsis_device_$(ST_FAMILY)
-ST_HAL_DRIVER = hw/mcu/st/stm32$(ST_FAMILY)xx_hal_driver
-
-CFLAGS += \
-  -flto \
-  -mthumb \
-  -mabi=aapcs \
-  -mcpu=cortex-m0plus \
-  -mfloat-abi=soft \
-  -nostdlib -nostartfiles \
-  -DSTM32L053xx \
-  -DCFG_EXAMPLE_MSC_READONLY \
-  -DCFG_EXAMPLE_VIDEO_READONLY \
-  -DCFG_TUSB_MCU=OPT_MCU_STM32L0
-
-# mcu driver cause following warnings
-CFLAGS += -Wno-error=unused-parameter -Wno-error=maybe-uninitialized -Wno-error=redundant-decls
-
-# All source paths should be relative to the top level.
-LD_FILE = hw/bsp/$(BOARD)/STM32L053C8Tx_FLASH.ld
-
-SRC_C += \
-  src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c \
-  $(ST_CMSIS)/Source/Templates/system_stm32$(ST_FAMILY)xx.c \
-  $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal.c \
-  $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_cortex.c \
-  $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_rcc.c \
-  $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_rcc_ex.c \
-  $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_gpio.c
-
-SRC_S += \
-  $(ST_CMSIS)/Source/Templates/gcc/startup_stm32l053xx.s
-
-INC += \
-  $(TOP)/lib/CMSIS_5/CMSIS/Core/Include \
-  $(TOP)/$(ST_CMSIS)/Include \
-  $(TOP)/$(ST_HAL_DRIVER)/Inc \
-  $(TOP)/hw/bsp/$(BOARD)
-
-# For freeRTOS port source
-FREERTOS_PORTABLE_SRC = $(FREERTOS_PORTABLE_PATH)/ARM_CM0
-
-# For flash-jlink target
-JLINK_DEVICE = STM32L053R8
-
-# Path to STM32 Cube Programmer CLI, should be added into system path
-STM32Prog = STM32_Programmer_CLI
-
-# flash target using on-board stlink
-flash: $(BUILD)/$(PROJECT).elf
-	$(STM32Prog) --connect port=swd --write $< --go
diff --git a/hw/bsp/stm32l0538disco/stm32l0xx_hal_conf.h b/hw/bsp/stm32l0538disco/stm32l0xx_hal_conf.h
deleted file mode 100644
index a917214c3..000000000
--- a/hw/bsp/stm32l0538disco/stm32l0xx_hal_conf.h
+++ /dev/null
@@ -1,331 +0,0 @@
-/**
-  ******************************************************************************
-  * @file    stm32l0xx_hal_conf.h
-  * @author  MCD Application Team
-  * @brief   HAL configuration file.
-  ******************************************************************************
-  *
-  * Copyright (c) 2016 STMicroelectronics International N.V. All rights reserved.
-  *
-  * Redistribution and use in source and binary forms, with or without
-  * modification, are permitted, provided that the following conditions are met:
-  *
-  * 1. Redistribution of source code must retain the above copyright notice,
-  *    this list of conditions and the following disclaimer.
-  * 2. Redistributions in binary form must reproduce the above copyright notice,
-  *    this list of conditions and the following disclaimer in the documentation
-  *    and/or other materials provided with the distribution.
-  * 3. Neither the name of STMicroelectronics nor the names of other
-  *    contributors to this software may be used to endorse or promote products
-  *    derived from this software without specific written permission.
-  * 4. This software, including modifications and/or derivative works of this
-  *    software, must execute solely and exclusively on microcontroller or
-  *    microprocessor devices manufactured by or for STMicroelectronics.
-  * 5. Redistribution and use of this software other than as permitted under
-  *    this license is void and will automatically terminate your rights under
-  *    this license.
-  *
-  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS"
-  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT
-  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
-  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
-  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT
-  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
-  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
-  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-  *
-  ******************************************************************************
-  */
-
-/* Define to prevent recursive inclusion -------------------------------------*/
-#ifndef __STM32L0xx_HAL_CONF_H
-#define __STM32L0xx_HAL_CONF_H
-
-#ifdef __cplusplus
- extern "C" {
-#endif
-
-/* Exported types ------------------------------------------------------------*/
-/* Exported constants --------------------------------------------------------*/
-
-/* ########################## Module Selection ############################## */
-/**
-  * @brief This is the list of modules to be used in the HAL driver
-  */
-#define HAL_MODULE_ENABLED
-// #define HAL_ADC_MODULE_ENABLED
-/* #define HAL_COMP_MODULE_ENABLED */
-/* #define HAL_CRC_MODULE_ENABLED */
-/* #define HAL_CRYP_MODULE_ENABLED */
-/* #define HAL_DAC_MODULE_ENABLED */
-#define HAL_DMA_MODULE_ENABLED
-/* #define HAL_FIREWALL_MODULE_ENABLED */
-#define HAL_FLASH_MODULE_ENABLED
-#define HAL_GPIO_MODULE_ENABLED
-/* #define HAL_I2C_MODULE_ENABLED */
-/* #define HAL_I2S_MODULE_ENABLED */
-/* #define HAL_IWDG_MODULE_ENABLED */
-/* #define HAL_LCD_MODULE_ENABLED */
-/* #define HAL_LPTIM_MODULE_ENABLED */
-#define HAL_PWR_MODULE_ENABLED
-#define HAL_RCC_MODULE_ENABLED
-//#define HAL_RNG_MODULE_ENABLED
-/* #define HAL_RTC_MODULE_ENABLED */
-//#define HAL_SPI_MODULE_ENABLED
-/* #define HAL_TIM_MODULE_ENABLED */
-/* #define HAL_TSC_MODULE_ENABLED */
-/* #define HAL_UART_MODULE_ENABLED */
-/* #define HAL_USART_MODULE_ENABLED */
-/* #define HAL_IRDA_MODULE_ENABLED */
-/* #define HAL_SMARTCARD_MODULE_ENABLED */
-/* #define HAL_SMBUS_MODULE_ENABLED */
-/* #define HAL_WWDG_MODULE_ENABLED */
-//#define HAL_PCD_MODULE_ENABLED
-#define HAL_CORTEX_MODULE_ENABLED
-/* #define HAL_PCD_MODULE_ENABLED */
-
-
-/* ########################## Oscillator Values adaptation ####################*/
-/**
-  * @brief Adjust the value of External High Speed oscillator (HSE) used in your application.
-  *        This value is used by the RCC HAL module to compute the system frequency
-  *        (when HSE is used as system clock source, directly or through the PLL).
-  */
-#if !defined  (HSE_VALUE)
-  #define HSE_VALUE    ((uint32_t)8000000U) /*!< Value of the External oscillator in Hz */
-#endif /* HSE_VALUE */
-
-#if !defined  (HSE_STARTUP_TIMEOUT)
-  #define HSE_STARTUP_TIMEOUT    ((uint32_t)100U)   /*!< Time out for HSE start up, in ms */
-#endif /* HSE_STARTUP_TIMEOUT */
-
-/**
-  * @brief Internal Multiple Speed oscillator (MSI) default value.
-  *        This value is the default MSI range value after Reset.
-  */
-#if !defined  (MSI_VALUE)
-  #define MSI_VALUE    ((uint32_t)2097152U) /*!< Value of the Internal oscillator in Hz*/
-#endif /* MSI_VALUE */
-
-/**
-  * @brief Internal High Speed oscillator (HSI) value.
-  *        This value is used by the RCC HAL module to compute the system frequency
-  *        (when HSI is used as system clock source, directly or through the PLL).
-  */
-#if !defined  (HSI_VALUE)
-  #define HSI_VALUE    ((uint32_t)16000000U) /*!< Value of the Internal oscillator in Hz*/
-#endif /* HSI_VALUE */
-
-/**
-  * @brief Internal High Speed oscillator for USB (HSI48) value.
-  */
-#if !defined  (HSI48_VALUE)
-#define HSI48_VALUE ((uint32_t)48000000U) /*!< Value of the Internal High Speed oscillator for USB in Hz.
-                                             The real value may vary depending on the variations
-                                             in voltage and temperature.  */
-#endif /* HSI48_VALUE */
-
-/**
-  * @brief Internal Low Speed oscillator (LSI) value.
-  */
-#if !defined  (LSI_VALUE)
- #define LSI_VALUE  ((uint32_t)37000U)       /*!< LSI Typical Value in Hz*/
-#endif /* LSI_VALUE */                      /*!< Value of the Internal Low Speed oscillator in Hz
-                                             The real value may vary depending on the variations
-                                             in voltage and temperature.*/
-/**
-  * @brief External Low Speed oscillator (LSE) value.
-  *        This value is used by the UART, RTC HAL module to compute the system frequency
-  */
-#if !defined  (LSE_VALUE)
-  #define LSE_VALUE    ((uint32_t)32768U) /*!< Value of the External oscillator in Hz*/
-#endif /* LSE_VALUE */
-
-/**
-  * @brief Time out for LSE start up value in ms.
-  */
-#if !defined  (LSE_STARTUP_TIMEOUT)
-  #define LSE_STARTUP_TIMEOUT    ((uint32_t)5000U)   /*!< Time out for LSE start up, in ms */
-#endif /* LSE_STARTUP_TIMEOUT */
-
-
-/* Tip: To avoid modifying this file each time you need to use different HSE,
-   ===  you can define the HSE value in your toolchain compiler preprocessor. */
-
-/* ########################### System Configuration ######################### */
-/**
-  * @brief This is the HAL system configuration section
-  */
-#define  VDD_VALUE                    ((uint32_t)3300U) /*!< Value of VDD in mv */
-#define  TICK_INT_PRIORITY            ((uint32_t)0U)    /*!< tick interrupt priority */
-#define  USE_RTOS                     0U
-#define  PREFETCH_ENABLE              1U
-#define  PREREAD_ENABLE               1U
-#define  BUFFER_CACHE_DISABLE         0U
-
-/* ########################## Assert Selection ############################## */
-/**
-  * @brief Uncomment the line below to expanse the "assert_param" macro in the
-  *        HAL drivers code
-  */
-/* #define USE_FULL_ASSERT    1 */
-
-/* ################## SPI peripheral configuration ########################## */
-
-/* CRC FEATURE: Use to activate CRC feature inside HAL SPI Driver
- * Activated: CRC code is present inside driver
- * Deactivated: CRC code cleaned from driver
- */
-
-#define USE_SPI_CRC                   1U
-
-/* Includes ------------------------------------------------------------------*/
-/**
-  * @brief Include module's header file
-  */
-
-#ifdef HAL_RCC_MODULE_ENABLED
-  #include "stm32l0xx_hal_rcc.h"
-#endif /* HAL_RCC_MODULE_ENABLED */
-
-#ifdef HAL_GPIO_MODULE_ENABLED
-  #include "stm32l0xx_hal_gpio.h"
-#endif /* HAL_GPIO_MODULE_ENABLED */
-
-#ifdef HAL_DMA_MODULE_ENABLED
-  #include "stm32l0xx_hal_dma.h"
-#endif /* HAL_DMA_MODULE_ENABLED */
-
-#ifdef HAL_CORTEX_MODULE_ENABLED
-  #include "stm32l0xx_hal_cortex.h"
-#endif /* HAL_CORTEX_MODULE_ENABLED */
-
-#ifdef HAL_ADC_MODULE_ENABLED
-  #include "stm32l0xx_hal_adc.h"
-#endif /* HAL_ADC_MODULE_ENABLED */
-
-#ifdef HAL_COMP_MODULE_ENABLED
-  #include "stm32l0xx_hal_comp.h"
-#endif /* HAL_COMP_MODULE_ENABLED */
-
-#ifdef HAL_CRC_MODULE_ENABLED
-  #include "stm32l0xx_hal_crc.h"
-#endif /* HAL_CRC_MODULE_ENABLED */
-
-#ifdef HAL_CRYP_MODULE_ENABLED
-  #include "stm32l0xx_hal_cryp.h"
-#endif /* HAL_CRYP_MODULE_ENABLED */
-
-#ifdef HAL_DAC_MODULE_ENABLED
-  #include "stm32l0xx_hal_dac.h"
-#endif /* HAL_DAC_MODULE_ENABLED */
-
-#ifdef HAL_FIREWALL_MODULE_ENABLED
-  #include "stm32l0xx_hal_firewall.h"
-#endif /* HAL_FIREWALL_MODULE_ENABLED */
-
-#ifdef HAL_FLASH_MODULE_ENABLED
-  #include "stm32l0xx_hal_flash.h"
-#endif /* HAL_FLASH_MODULE_ENABLED */
-
-#ifdef HAL_I2C_MODULE_ENABLED
- #include "stm32l0xx_hal_i2c.h"
-#endif /* HAL_I2C_MODULE_ENABLED */
-
-#ifdef HAL_I2S_MODULE_ENABLED
- #include "stm32l0xx_hal_i2s.h"
-#endif /* HAL_I2S_MODULE_ENABLED */
-
-#ifdef HAL_IWDG_MODULE_ENABLED
- #include "stm32l0xx_hal_iwdg.h"
-#endif /* HAL_IWDG_MODULE_ENABLED */
-
-#ifdef HAL_LCD_MODULE_ENABLED
- #include "stm32l0xx_hal_lcd.h"
-#endif /* HAL_LCD_MODULE_ENABLED */
-
-#ifdef HAL_LPTIM_MODULE_ENABLED
-#include "stm32l0xx_hal_lptim.h"
-#endif /* HAL_LPTIM_MODULE_ENABLED */
-
-#ifdef HAL_PWR_MODULE_ENABLED
- #include "stm32l0xx_hal_pwr.h"
-#endif /* HAL_PWR_MODULE_ENABLED */
-
-#ifdef HAL_RNG_MODULE_ENABLED
- #include "stm32l0xx_hal_rng.h"
-#endif /* HAL_RNG_MODULE_ENABLED */
-
-#ifdef HAL_RTC_MODULE_ENABLED
-  #include "stm32l0xx_hal_rtc.h"
-#endif /* HAL_RTC_MODULE_ENABLED */
-
-#ifdef HAL_SPI_MODULE_ENABLED
- #include "stm32l0xx_hal_spi.h"
-#endif /* HAL_SPI_MODULE_ENABLED */
-
-#ifdef HAL_TIM_MODULE_ENABLED
- #include "stm32l0xx_hal_tim.h"
-#endif /* HAL_TIM_MODULE_ENABLED */
-
-#ifdef HAL_TSC_MODULE_ENABLED
-  #include "stm32l0xx_hal_tsc.h"
-#endif /* HAL_TSC_MODULE_ENABLED */
-
-#ifdef HAL_UART_MODULE_ENABLED
- #include "stm32l0xx_hal_uart.h"
-#endif /* HAL_UART_MODULE_ENABLED */
-
-#ifdef HAL_USART_MODULE_ENABLED
- #include "stm32l0xx_hal_usart.h"
-#endif /* HAL_USART_MODULE_ENABLED */
-
-#ifdef HAL_IRDA_MODULE_ENABLED
- #include "stm32l0xx_hal_irda.h"
-#endif /* HAL_IRDA_MODULE_ENABLED */
-
-#ifdef HAL_SMARTCARD_MODULE_ENABLED
- #include "stm32l0xx_hal_smartcard.h"
-#endif /* HAL_SMARTCARD_MODULE_ENABLED */
-
-#ifdef HAL_SMBUS_MODULE_ENABLED
- #include "stm32l0xx_hal_smbus.h"
-#endif /* HAL_SMBUS_MODULE_ENABLED */
-
-#ifdef HAL_WWDG_MODULE_ENABLED
- #include "stm32l0xx_hal_wwdg.h"
-#endif /* HAL_WWDG_MODULE_ENABLED */
-
-#ifdef HAL_PCD_MODULE_ENABLED
- #include "stm32l0xx_hal_pcd.h"
-#endif /* HAL_PCD_MODULE_ENABLED */
-
-/* Exported macro ------------------------------------------------------------*/
-#ifdef  USE_FULL_ASSERT
-/**
-  * @brief  The assert_param macro is used for function's parameters check.
-  * @param  expr If expr is false, it calls assert_failed function
-  *         which reports the name of the source file and the source
-  *         line number of the call that failed.
-  *         If expr is true, it returns no value.
-  * @retval None
-  */
-  #define assert_param(expr) ((expr) ? (void)0U : assert_failed((uint8_t *)__FILE__, __LINE__))
-/* Exported functions ------------------------------------------------------- */
-  void assert_failed(uint8_t *file, uint32_t line);
-#else
-  #define assert_param(expr) ((void)0U)
-#endif /* USE_FULL_ASSERT */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* __STM32L0xx_HAL_CONF_H */
-
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/