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- Emulates AVR Arduino USB API, effectively replaces STM32duino core
USBDevice library
- reportedly works with Arduino sketches in platformio,
- emulates
PluggableUSB, but has issues in Arduino 2.
- wanted to pretend that it is ARDUINO_ARCH_AVR;
instead, hacked MIDIUSB.h:
- #if defined(ARDUINO_ARCH_AVR)
+ #if defined(ARDUINO_ARCH_AVR) || defined(HAL_PCD_MODULE_ENABLED)
- requires USBCON and HAL_PCD_MODULE_ENABLED build flags
probably set in menu based on usb_flags and platform.txt
- Arduino 2 does not see files in USBLibrarySTM32/include/;
moving files to USBLibrarySTM32/src/ fixes that.
- reported my experience
- coordination with STM32duino core USB is discussed here;
likely integration would be as a menu option
This compiles with hacked MIDIUSB Library for Arduino example sketch,
but then fails to link because it duplicates STM32duino USB library definitions.
STM32duino USB multiple definition possible workaround
- install and use a custom core version
more details: Platform specification
- hopefully applies to Arduino 2...?
- is STM32duino "core" literally https://github.com/stm32duino/Arduino_Core_STM32?
that seemingly matches (658MB) content at
AppData/Local/Arduino15/packages/STMicroelectronics/hardware/stm32/2.11.0/
results from grep -R USBD_Init
- potential hack, based on feedback from @Levi--G
- add
platform.local.txt file in packages/STMicroelectronics/hardware/stm32/2.11.0/:
USBDevice_include_dir=/libraries/USBLibrarySTM32
With only this change, builds fail:
C:\Users\bleke\AppData\Local\Arduino15\packages\STMicroelectronics\hardware\stm32\2.11.0\cores\arduino/WSerial.h:7:12:
fatal error: USBSerial.h: No such file or directory
7 | #include "USBSerial.h"
| ^~~~~~~~~~~~~
compilation terminated.
Success requires setting USB support (if available): "None", then:
$ cat MIDIUSB_loop/build_opt.h
-DUSBCON -DHAL_PCD_MODULE_ENABLED
- Attempts to build a USBSerial library in user space failed
- Compiling STM32 core seemingly uses incompatible rules...
USB enumeration, endpoints and descriptors
|