Merge pull request #2134 from clhenry/non-bus-powered-re-enumeration

Non-bus-powered MSP430 support.
This commit is contained in:
Ha Thach 2024-04-15 23:14:10 +07:00 committed by GitHub
commit fb21b6a67d
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12 changed files with 322 additions and 27 deletions

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@ -61,10 +61,11 @@ jobs:
tar -C ~/cache/toolchain -xaf toolchain.tar.bz2
- name: Set Toolchain Path
run: echo >> $GITHUB_PATH `echo ~/cache/toolchain/*/bin`
- name: Get Dependencies
run: python3 tools/get_deps.py ${{ matrix.family }}
run: |
echo >> $GITHUB_PATH `echo ~/cache/toolchain/*/bin`
sudo apt install -y ninja-build
- name: Build
run: python3 tools/build_make.py ${{ matrix.family }}
run: |
python3 tools/get_deps.py ${{ matrix.family }}
python tools/build_cmake.py ${{ matrix.family }} -DCMAKE_BUILD_TYPE=MinSizeRel

12
.idea/cmake.xml generated
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@ -2,8 +2,9 @@
<project version="4">
<component name="CMakeSharedSettings">
<configurations>
<configuration PROFILE_NAME="pico" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=raspberry_pi_pico -DLOG=2" />
<configuration PROFILE_NAME="feather_rp2040" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=pico_sdk -DPICO_BOARD=adafruit_feather_rp2040 -DLOG=2 -DLOGGER=RTT -DMAX3421_HOST=1" />
<configuration PROFILE_NAME="pico" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=raspberry_pi_pico -DLOG=1" />
<configuration PROFILE_NAME="feather_rp2040" ENABLED="false" CONFIG_NAME="Debug" TOOLCHAIN_NAME="armgcc 11.2" GENERATION_OPTIONS="-DBOARD=pico_sdk -DPICO_BOARD=adafruit_feather_rp2040 -DLOG=2" />
<configuration PROFILE_NAME="feather_rp2040_max3421" ENABLED="false" CONFIG_NAME="Debug" TOOLCHAIN_NAME="armgcc 11.2" GENERATION_OPTIONS="-DBOARD=feather_rp2040_max3421 -DLOG=2" />
<configuration PROFILE_NAME="metro_rp2040" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=pico_sdk -DPICO_BOARD=adafruit_metro_rp2040 -DLOG=2 -DMAX3421_HOST=1" />
<configuration PROFILE_NAME="feather esp32s2" ENABLED="false" TOOLCHAIN_NAME="ESP-IDF" GENERATION_OPTIONS="-DBOARD=adafruit_feather_esp32s2 -DMAX3421_HOST=1 -DLOG=2">
<ADDITIONAL_GENERATION_ENVIRONMENT>
@ -44,7 +45,7 @@
<configuration PROFILE_NAME="metro_m0_express" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=metro_m0_express -DLOG=3 -DLOGGER=RTT -DMAX3421_HOST=1" />
<configuration PROFILE_NAME="feather_m4_express" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=feather_m4_express -DLOG=3 -DLOGGER=RTT -DMAX3421_HOST=1" />
<configuration PROFILE_NAME="metro_m4_express" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=metro_m4_express -DLOG=3 -DLOGGER=RTT -DMAX3421_HOST=1" />
<configuration PROFILE_NAME="feather_nrf52840_express" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=feather_nrf52840_express -DLOG=3 -DLOGGER=RTT -DMAX3421_HOST=1" />
<configuration PROFILE_NAME="feather_nrf52840_express" ENABLED="false" CONFIG_NAME="Debug" TOOLCHAIN_NAME="armgcc 11.2" GENERATION_OPTIONS="-DBOARD=feather_nrf52840_express -DLOG=3 -DLOGGER=RTT -DMAX3421_HOST=1" />
<configuration PROFILE_NAME="pca10056" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=pca10056 -DLOG=3 -DLOGGER=RTT -DTRACE_ETM=1" />
<configuration PROFILE_NAME="pca10095" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=pca10095 -DLOG=3 -DLOGGER=RTT -DTRACE_ETM=1" />
<configuration PROFILE_NAME="metro m7 1011 sd" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=metro_m7_1011_sd -DLOG=3 -DLOGGER=RTT -DTRACE_ETM=1" />
@ -57,8 +58,10 @@
<configuration PROFILE_NAME="ea4357" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=ea4357 -DLOG=3 -DLOGGER=RTT -DTRACE_ETM=1" />
<configuration PROFILE_NAME="lpc54628" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=lpcxpresso54628 -DLOG=4 -DLOGGER=RTT" />
<configuration PROFILE_NAME="lpc55s69" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=lpcxpresso55s69 -DLOG=4 -DLOGGER=RTT" />
<configuration PROFILE_NAME="mcxn947" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=mcxn947brk -DLOG=3 -DLOGGER=RTT" />
<configuration PROFILE_NAME="mcxn947brk" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=mcxn947brk -DLOG=3 -DLOGGER=RTT" />
<configuration PROFILE_NAME="frdm_mcxa153" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=frdm_mcxa153 -DLOG=3 -DLOGGER=RTT" />
<configuration PROFILE_NAME="frdm_kl25z" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=frdm_kl25z -DLOG=3 -DLOGGER=RTT" />
<configuration PROFILE_NAME="frdm_k32l2a4s" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=frdm_k32l2a4s" />
<configuration PROFILE_NAME="frdm_k64f" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=frdm_k64f -DLOG=2 -DLOGGER=RTT" />
<configuration PROFILE_NAME="stm32f072disco" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=stm32f072disco" />
<configuration PROFILE_NAME="stm32f103_mini_2" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=stm32f103_mini_2" />
@ -82,6 +85,7 @@
<configuration PROFILE_NAME="uno_r4" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=uno_r4 -DLOG=4 -DLOGGER=RTT" />
<configuration PROFILE_NAME="portenta_c33" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=portenta_c33 -DLOG=3" />
<configuration PROFILE_NAME="lpcxpresso1769" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=lpcxpresso1769 -DLOG=3 -DLOGGER=RTT" />
<configuration PROFILE_NAME="msp430f5529" ENABLED="false" CONFIG_NAME="Debug" GENERATION_OPTIONS="-DBOARD=msp_exp430f5529lp" />
</configurations>
</component>
</project>

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@ -0,0 +1,7 @@
if (TOOLCHAIN STREQUAL "gcc")
set(FREERTOS_PORT GCC_MSP430F449 CACHE INTERNAL "")
elseif (TOOLCHAIN STREQUAL "iar")
set(FREERTOS_PORT IAR_MSP430 CACHE INTERNAL "")
endif ()

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@ -0,0 +1,52 @@
set(CMAKE_SYSTEM_NAME Generic)
if (NOT DEFINED CMAKE_C_COMPILER)
set(CMAKE_C_COMPILER "msp430-elf-gcc")
endif ()
if (NOT DEFINED CMAKE_CXX_COMPILER)
set(CMAKE_CXX_COMPILER "msp430-elf-g++")
endif ()
set(CMAKE_ASM_COMPILER ${CMAKE_C_COMPILER})
set(CMAKE_SIZE "msp430-elf-size" CACHE FILEPATH "")
set(CMAKE_OBJCOPY "msp430-elf-objcopy" CACHE FILEPATH "")
set(CMAKE_OBJDUMP "msp430-elf-objdump" CACHE FILEPATH "")
set_property(GLOBAL PROPERTY TARGET_SUPPORTS_SHARED_LIBS FALSE)
# Look for includes and libraries only in the target system prefix.
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
# pass TOOLCHAIN_CPU to
set(CMAKE_TRY_COMPILE_PLATFORM_VARIABLES CMAKE_SYSTEM_PROCESSOR)
include(${CMAKE_CURRENT_LIST_DIR}/../cpu/${CMAKE_SYSTEM_PROCESSOR}.cmake)
# enable all possible warnings for building examples
list(APPEND TOOLCHAIN_COMMON_FLAGS
-fdata-sections
-ffunction-sections
-fsingle-precision-constant
-fno-strict-aliasing
)
list(APPEND TOOLCHAIN_EXE_LINKER_FLAGS
-Wl,--print-memory-usage
-Wl,--gc-sections
-Wl,--cref
)
include(${CMAKE_CURRENT_LIST_DIR}/set_flags.cmake)
# try_compile is cmake test compiling its own example,
# pass -nostdlib to skip stdlib linking
get_property(IS_IN_TRY_COMPILE GLOBAL PROPERTY IN_TRY_COMPILE)
if (IS_IN_TRY_COMPILE)
set(CMAKE_C_LINK_FLAGS "${CMAKE_C_LINK_FLAGS} -nostdlib")
set(CMAKE_CXX_LINK_FLAGS "${CMAKE_CXX_LINK_FLAGS} -nostdlib")
endif ()

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@ -0,0 +1,8 @@
ifeq ($(TOOLCHAIN),gcc)
# nothing to add
else ifeq ($(TOOLCHAIN),iar)
# nothing to add
endif
# For freeRTOS port source
FREERTOS_PORTABLE_SRC ?= $(FREERTOS_PORTABLE_PATH)/GCC_MSP430F449

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@ -460,6 +460,21 @@ function(family_flash_dfu_util TARGET OPTION)
)
endfunction()
function(family_flash_msp430flasher TARGET)
if (NOT DEFINED MSP430Flasher)
set(MSP430FLASHER MSP430Flasher)
endif ()
# set LD_LIBRARY_PATH to find libmsp430.so (directory containing MSP430Flasher)
find_program(MSP430FLASHER_PATH MSP430Flasher)
get_filename_component(MSP430FLASHER_PARENT_DIR "${MSP430FLASHER_PATH}" DIRECTORY)
add_custom_target(${TARGET}-msp430flasher
DEPENDS ${TARGET}
COMMAND ${CMAKE_COMMAND} -E env LD_LIBRARY_PATH=${MSP430FLASHER_PARENT_DIR}
${MSP430FLASHER} -w $<TARGET_FILE_DIR:${TARGET}>/${TARGET}.hex -z [VCC]
)
endfunction()
#----------------------------------
# Family specific
#----------------------------------

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@ -0,0 +1,9 @@
set(MCU_VARIANT msp430f5529)
set(LD_FILE_GNU ${SDK_DIR}/msp430f5529.ld)
function(update_board TARGET)
target_compile_definitions(${TARGET} INTERFACE
__MSP430F5529__
)
endfunction()

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@ -0,0 +1,4 @@
CFLAGS += \
-D__MSP430F5529__ \
LD_FILE = ${SDK_DIR}/msp430f5529.ld

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@ -0,0 +1,84 @@
include_guard()
set(SDK_DIR ${TOP}/hw/mcu/ti/msp430/msp430-gcc-support-files/include)
# include board specific
include(${CMAKE_CURRENT_LIST_DIR}/boards/${BOARD}/board.cmake)
# toolchain set up
set(CMAKE_SYSTEM_PROCESSOR msp430 CACHE INTERNAL "System Processor")
set(CMAKE_TOOLCHAIN_FILE ${TOP}/examples/build_system/cmake/toolchain/msp430_${TOOLCHAIN}.cmake)
set(FAMILY_MCUS MSP430x5xx CACHE INTERNAL "")
#------------------------------------
# BOARD_TARGET
#------------------------------------
# only need to be built ONCE for all examples
function(add_board_target BOARD_TARGET)
if (NOT TARGET ${BOARD_TARGET})
add_library(${BOARD_TARGET} INTERFACE)
target_compile_definitions(${BOARD_TARGET} INTERFACE
CFG_TUD_ENDPOINT0_SIZE=8
CFG_EXAMPLE_VIDEO_READONLY
CFG_EXAMPLE_MSC_READONLY
)
target_include_directories(${BOARD_TARGET} INTERFACE
${CMAKE_CURRENT_FUNCTION_LIST_DIR}
${SDK_DIR}
)
update_board(${BOARD_TARGET})
if (CMAKE_C_COMPILER_ID STREQUAL "GNU")
target_link_options(${BOARD_TARGET} INTERFACE
"LINKER:--script=${LD_FILE_GNU}"
-L${SDK_DIR}
)
elseif (CMAKE_C_COMPILER_ID STREQUAL "IAR")
target_link_options(${BOARD_TARGET} INTERFACE
"LINKER:--config=${LD_FILE_IAR}"
)
endif ()
endif ()
endfunction()
#------------------------------------
# Functions
#------------------------------------
function(family_configure_example TARGET RTOS)
family_configure_common(${TARGET} ${RTOS})
# Board target
add_board_target(board_${BOARD})
#---------- Port Specific ----------
# These files are built for each example since it depends on example's tusb_config.h
target_sources(${TARGET} PUBLIC
# BSP
${CMAKE_CURRENT_FUNCTION_LIST_DIR}/family.c
${CMAKE_CURRENT_FUNCTION_LIST_DIR}/../board.c
)
target_include_directories(${TARGET} PUBLIC
# family, hw, board
${CMAKE_CURRENT_FUNCTION_LIST_DIR}
${CMAKE_CURRENT_FUNCTION_LIST_DIR}/../../
${CMAKE_CURRENT_FUNCTION_LIST_DIR}/boards/${BOARD}
)
# Add TinyUSB target and port source
family_add_tinyusb(${TARGET} OPT_MCU_MSP430x5xx ${RTOS})
target_sources(${TARGET}-tinyusb PUBLIC
${TOP}/src/portable/ti/msp430x5xx/dcd_msp430x5xx.c
)
target_link_libraries(${TARGET}-tinyusb PUBLIC board_${BOARD})
# Link dependencies
target_link_libraries(${TARGET} PUBLIC board_${BOARD} ${TARGET}-tinyusb)
# Flashing
family_add_bin_hex(${TARGET})
family_flash_msp430flasher(${TARGET})
endfunction()

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@ -2,21 +2,21 @@ CROSS_COMPILE = msp430-elf-
DEPS_SUBMODULES += hw/mcu/ti
SKIP_NANOLIB = 1
SDK_DIR = hw/mcu/ti/msp430/msp430-gcc-support-files/include
include $(TOP)/$(BOARD_PATH)/board.mk
CFLAGS += \
-D__MSP430F5529__ \
-DCFG_TUSB_MCU=OPT_MCU_MSP430x5xx \
-DCFG_EXAMPLE_MSC_READONLY \
-DCFG_TUD_ENDPOINT0_SIZE=8
# All source paths should be relative to the top level.
LD_FILE = hw/mcu/ti/msp430/msp430-gcc-support-files/include/msp430f5529.ld
LDINC += $(TOP)/hw/mcu/ti/msp430/msp430-gcc-support-files/include
LDFLAGS += $(addprefix -L,$(LDINC))
LDFLAGS += -L${TOP}/${SDK_DIR}
SRC_C += src/portable/ti/msp430x5xx/dcd_msp430x5xx.c
INC += \
$(TOP)/hw/mcu/ti/msp430/msp430-gcc-support-files/include \
${TOP}/${SDK_DIR} \
$(TOP)/$(BOARD_PATH)
# export for libmsp430.so to same installation

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@ -535,14 +535,14 @@ static void dcd_ep_ctr_rx_handler(uint32_t wIstr)
* - Software should ensure that a small delay is included before accessing the SRAM contents. This delay
* should be 800 ns in Full Speed mode and 6.4 μs in Low Speed mode
* - Since H5 can run up to 250Mhz -> 1 cycle = 4ns. Per errata, we need to wait 200 cycles. Though executing code
* also takes time, so we'll wait 40 cycles (count = 20).
* also takes time, so we'll wait 60 cycles (count = 20).
* - Since Low Speed mode is not supported/popular, we will ignore it for now.
*
* Note: this errata also seems to apply to G0, U5, H5 etc.
*/
volatile uint32_t cycle_count = 20; // defined as PCD_RX_PMA_CNT in stm32 hal_driver
while (cycle_count > 0U) {
cycle_count--; // each count take 2 cycle (1 cycle for sub, 1 cycle for compare/jump)
cycle_count--; // each count take 3 cycles (1 for sub, jump, and compare)
}
#endif

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@ -94,7 +94,8 @@ static void bus_reset(void)
USBOEPCNT_0 &= ~NAK;
USBIEPCNT_0 &= ~NAK;
USBCTL |= FEN; // Enable responding to packets.
// Enable responding to packets.
USBCTL |= FEN;
// Dedicated buffers in hardware for SETUP and EP0, no setup needed.
// Now safe to respond to SETUP packets.
@ -103,6 +104,28 @@ static void bus_reset(void)
USBKEYPID = 0;
}
// Controls reset behavior of the USB module on receipt of a bus reset event.
// - enable: When true, bus reset events will cause a reset the USB module.
static void enable_functional_reset(const bool enable)
{
// Check whether or not the USB configuration registers were
// locked prior to this function being called so that, if
// necessary, the lock state can be restored on exit.
bool unlocked = (USBKEYPID == 0xA528) ? true : false;
if(!unlocked) USBKEYPID = USBKEY;
if(enable)
{
USBCTL |= FRSTE;
}
else
{
USBCTL &= ~FRSTE;
}
if(!unlocked) USBKEYPID = 0;
}
/*------------------------------------------------------------------*/
/* Controller API
@ -131,11 +154,14 @@ void dcd_init (uint8_t rhport)
USBVECINT = 0;
// Enable reset and wait for it before continuing.
USBIE |= RSTRIE;
// Enable pullup.
USBCNF |= PUR_EN;
if(USBPWRCTL & USBBGVBV) {// Bus power detected?
USBPWRCTL |= VBOFFIE; // Enable bus-power-removed interrupt.
USBIE |= RSTRIE; // Enable reset and wait for it before continuing.
USBCNF |= PUR_EN; // Enable pullup.
} else {
USBPWRCTL |= VBONIE; // Enable bus-power-applied interrupt.
USBCNF &= ~USB_EN; // Disable USB module until bus power is detected.
}
USBKEYPID = 0;
}
@ -610,14 +636,76 @@ static void handle_setup_packet(void)
_setup_packet[i] = setup_buf[i];
}
// Clearing SETUPIFG by reading USBVECINT does not set NAK, so now that we
// have a SETUP packet, force NAKs until tinyusb can handle the SETUP
// packet and prepare for a new xfer.
// Force NAKs until tinyusb can handle the SETUP packet and prepare for a new xfer.
USBIEPCNT_0 |= NAK;
USBOEPCNT_0 |= NAK;
// Clear SETUPIFG to avoid handling in the USBVECINT switch statement.
// When handled there the NAKs applied to the endpoints above are
// cleared by hardware and the host will receive stale/duplicate data.
//
// Excerpt from MSP430x5xx and MSP430x6xx Family User's Guide:
//
// "...the SETUPIFG is cleared upon reading USBIV. In addition, the NAK on
// input endpoint 0 and output endpoint 0 is also cleared."
USBIEPCNF_0 &= ~UBME; // Errata USB10 workaround.
USBOEPCNF_0 &= ~UBME; // Errata USB10 workaround.
USBIFG &= ~SETUPIFG;
USBIEPCNF_0 |= UBME; // Errata USB10 workaround.
USBOEPCNF_0 |= UBME; // Errata USB10 workaround.
dcd_event_setup_received(0, (uint8_t*) &_setup_packet[0], true);
}
#if CFG_TUSB_OS == OPT_OS_NONE
TU_ATTR_ALWAYS_INLINE static inline void tu_delay(uint32_t ms) {
// msp430 can run up to 25Mhz -> 40ns per cycle. 1 ms = 25000 cycles
// each loop need 4 cycle: 1 sub, 1 cmp, 1 jump, 1 nop
volatile uint32_t cycles = (25000 * ms) >> 2;
while (cycles > 0) {
cycles--;
asm("nop");
}
}
#else
#define tu_delay(ms) osal_task_delay(ms)
#endif
static void handle_bus_power_event(void *param) {
(void) param;
tu_delay(5); // Bus power settling delay.
USBKEYPID = USBKEY;
if(USBPWRCTL & USBBGVBV) { // Event caused by application of bus power.
USBPWRCTL |= VBOFFIE; // Enable bus-power-removed interrupt.
USBPLLDIVB = USBPLLDIVB; // For some reason the PLL will *NOT* lock unless the divider
// register is re-written. The assumption here is that this
// register was already properly configured during board-level
// initialization.
USBPLLCTL |= (UPLLEN | UPFDEN); // Enable the PLL.
uint16_t attempts = 0;
do { // Poll the PLL, checking for a successful lock.
USBPLLIR = 0;
tu_delay(1);
attempts++;
} while ((attempts < 10) && (USBPLLIR != 0));
// A successful lock is indicated by all PLL-related interrupt flags being cleared.
if(!USBPLLIR) {
dcd_init(0); // Re-initialize the USB module.
}
} else { // Event caused by removal of bus power.
USBPWRCTL |= VBONIE; // Enable bus-power-applied interrupt.
USBPLLCTL &= ~(UPLLEN | UPFDEN); // Disable the PLL.
USBCNF = 0; // Disable the USB module.
dcd_event_bus_signal(0, DCD_EVENT_UNPLUGGED, false);
}
USBKEYPID = 0;
}
void dcd_int_handler(uint8_t rhport)
{
(void) rhport;
@ -628,6 +716,7 @@ void dcd_int_handler(uint8_t rhport)
if(setup_status)
{
enable_functional_reset(true);
handle_setup_packet();
}
@ -646,11 +735,32 @@ void dcd_int_handler(uint8_t rhport)
switch(curr_vector)
{
case USBVECINT_NONE:
break;
case USBVECINT_RSTR:
enable_functional_reset(false); // Errata USB4 workaround.
bus_reset();
dcd_event_bus_reset(0, TUSB_SPEED_FULL, true);
break;
case USBVECINT_PWR_VBUSOn:
case USBVECINT_PWR_VBUSOff: {
USBKEYPID = USBKEY;
// Prevent (possibly) unstable power from generating spurious interrupts.
USBPWRCTL &= ~(VBONIE | VBOFFIE);
USBKEYPID = 0;
dcd_event_t event;
event.rhport = 0;
event.event_id = USBD_EVENT_FUNC_CALL;
event.func_call.func = handle_bus_power_event;
dcd_event_handler(&event, true);
}
break;
// Clear the (hardware-enforced) NAK on EP 0 after a SETUP packet
// is received. At this point, even though the hardware is no longer
// forcing NAKs, the EP0 NAK bits should still be set to avoid
@ -675,10 +785,12 @@ void dcd_int_handler(uint8_t rhport)
break;
case USBVECINT_INPUT_ENDPOINT0:
enable_functional_reset(true);
transmit_packet(0);
break;
case USBVECINT_OUTPUT_ENDPOINT0:
enable_functional_reset(true);
receive_packet(0);
break;
@ -710,7 +822,6 @@ void dcd_int_handler(uint8_t rhport)
default:
while(true);
break;
}
}