Arduino for STM32

As a first feeling I would check STLink connection with the BP

This depends of your board:
https://github.com/stm32duino/Arduino_C ... _if.c#L130

Note that STM32 core provide dwt api to help usage.
And that delayMicroseconds use it when it is available.

You can use https://www.st.com/en/development-tools/st-mcu-finder.html to find the mcu which best fit your need. L412KB is supported, in fact all can be supported easily. The STM32 core is MCU oriented. Moreover the new core 2.0.0 will provide all the variant skeleton to ease board addition. About t...

Yes that is normal.
As you could see on GitHub page (README.md) all the generic L4 supported are from 2.0.0 release. That's why you didn't have them with 1.9.0.
2.0.0 should be released this week.

Currently no USB host is supported by the core. A PR introduced this for Mass storage but always a WIP and doesn't not covered HID but a least USB host library is now accessible.
https://github.com/stm32duino/Arduino_C ... /pull/1088

Which environment you used ? Arduino IDE ? Using HAL_UART_MODULE_ONLY is the correct way but it seems not take in account during your build. As you can see here https://github.com/stm32duino/Arduino_Core_STM32/blob/eaeb794028c5c36be184aa4f3b568a45f1768cd1/libraries/SrcWrapper/src/stm32/uart.c#L791 t...

You can try to change some interrupt priority: https://github.com/stm32duino/wiki/wiki/Custom-definitions#change-interrupt-priority-values Mainly the USARt one, if the library print a lot of stuf... Seems it has been tested with the STM32duino core with Disco F407 as stated here: http://www.airspayc...

BennehBoy wrote: ↑

Sat Apr 17, 2021 12:39 pm

please forgive the horrible soldering!

I can't