Stm32f3 support

hardware support
1

Hi there,

I have been tinkering with this library, and had some success with the help of reading through this forum. Thanks!

I recently hit a wall with my setup - I am using a stmf303k8 nucleo board, and it’s lacking support for a couple of things (so far):

  • no master/slave pwm alignment here, here, here.
  • No low-side current sense - it falls back to this when configuring ADC.

So, my question is: is the lack of support for stmf3x just due to it being “not implemented yet”, or is there a fundamental feature that is missing on these MCUs?

I have done some digging and in general the stmf3x boards do have “advanced” timers; the board I have in particular has one 16-bit “advanced timer”, a 32-bit general-purpose timer, and a number of 16-bit general purpose timers. Also, the ST motor control learning resources actually use a stmf303re for their workshop here.

I’m open to trying to add support for my board/mcu, but I don’t have confidence that it won’t be a waste of time because of some missing piece that I don’t understand at the moment. I’m new to embedded development, so please bear with me :slight_smile:

2

Hey @boz, welcome to SimpleFOC!

I think there is no special reason the F3 series is less supported, it just isn’t used very much by our users, I think.

No reason that both timer sync and current sense could not be implemented. We’re currently working on both the PWM and the ADC drivers so perhaps we’ll have a chance to add it.

3

Good to know. Thanks!

4

Afaik STM32F303CB (48 pins) is pinout compatible with STM32 F103C8(CB) So if you have a board with STMF103C8(used in bluepill) you can solder instead a F303,that has more flash memory(256 K).Several years back F303 was used in drone flight controllers so it was not so uncommon. If there is support flor bluepill it will be easy to support F303.

5

Hi @midelic_m,

I think SimpleFOC will work on F3 series, just the current sensing will not work at the moment.