Arduino for STM32

Arduino API use pin number Dx, x, Ax or PYn then it is converted to PinName which are a combination of GPIO port and GPIO pin for HAL/LL. Some advanced API uses PinName to be faster (avoid the conversion from pin number to PinName). I'm curently, reworking all the variants and also manage the remap ...

PR to fix this issue available here https://github.com/stm32duino/Arduino_C ... /pull/1219

If you can test it, thanks.

Hi sp5iou For BP (STM32F103C8), all flash page size is 0x400. You can use the whole FLASH_PAGE_SIZE so 1kb. I've tested and can have access to the whole page. Note that I don't advice to use the EEPROM mainly if your write a lot. Flash has a limited number of write iterations. Moreover each time you...

Hi MGeo You're right there is an issue with SPI using the PYn pin number notation when it is an analog pin. It is part of the rework done to be able to define the analog pins in a non contiguous way. The pin number PA4 is well defined as A2 as it is an analog pin. And A2 is well defined as 55. This ...

You should try to change the default timeout set to 10 ms.
I will use a define for all 10 ms delay then test some values (higher and lower) to see if this change the issue.

Same, I will not do this as it will require support and not enough generic and not enough time for this. You can do it on your own.

I don't think it is only for example and not enough generic.

We already face an issue using the bootloader. In fact the BL does not leave the USB in a correct state then not able to properly initialized it. Did you try a minimal sketch which only print on Serial (SerilaUSB) ? I've already tested USB on STM32F103ZE wihtout any issue. Another way should be to t...

There is some fixes available for I2C in the master for STM32F1 series, it should be fine to test it.
Did you try several speed?
By default the lib seems to be at : I2C_SPEED_STANDARD (100k)
Did you try I2C_SPEED_FAST (400k)?

I guess it is libmaple as STM32 core does not have pwmWrite API nor PWM as argument of pin mode.