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simplefoc / Arduino-FOC

Arduino FOC for BLDC and Stepper motors - Arduino Based Field Oriented Control Algorithm Library
https://docs.simplefoc.com
MIT License
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can this lib support esc board ST B-G431B? #22

Closed xlla closed 3 years ago

xlla commented 3 years ago

I found this board integrate 3-current resistor and with F103 processor. Can we use it to study simplefoc?

owennewo commented 3 years ago

Hi @xlla . This board looks really interesting. I've not seen it before. The main schematic here... https://www.st.com/resource/en/schematic_pack/mb1419-g431cb-b01_schematic.pdf Shows that it has two stm processors. A familiar stm32f103 (which i believe is the onboard stlink for programming) and a more exotic stm32g431. https://www.st.com/resource/en/product_presentation/microcontrollers_stm32g4_series_product_overview.pdf

Each motor phase has a l6387 which has high and low input pins. I.e this requires 6pin pwm. SimpleFOC only supports 3pin pwm at the moment but 6 pin is definitely on the road map.

Current sensing is on the roadmap to. This board does look like a candidate to experiment with and at $18 is great value.

Stm will expect people to use their ide and framework with this board (with their motor control apis) but i don't think there is anything stopping it being used to develop new features in simplefoc. I think the stmg32g431 is supported by platformio with Arduino framework.

If a few others want to do some hacking on this board, I'd probably join in the effort.

xlla commented 3 years ago

@owennewo you are right! I am looking for a cheap FOC esc board compare to expensive VESC board. stmg32g431 has fpu and a lot of timer that can help speed up foc computations.

I prefer work with arduino framework to ST libs.

owennewo commented 3 years ago

@xlla, it looks like @askuric is working on 6pwm which may mean this board might start to be usable with SimpleFOC https://community.simplefoc.com/t/motor-driver-st-ihm08m1/131 This work won't unlock the current sensing capability of this board but is a step in the right direction.

owennewo commented 3 years ago

@xlla. I've bought the b-g431b and have done a liitle work on getting it working. The board wasn't officially supported by arduino, I've created a PR to stm32duino to add this as a new board variant. https://github.com/stm32duino/Arduino_Core_STM32/pull/1236 This basically would allow you to select the board in arduino ide. I reckon that PR might take a few months (stm32duino are restructuring their repo and PRs are being blocked). I've uploaded a couple of videos on youtube of what I've done so far with this board. @askuric is implementing 6pwm as we speak and I'm helping to ensure it also works on g431 chip.

Hopefully we'll have something working before the new year.

askuric commented 3 years ago

Hey @xlla ,

The library version v2.0 now supports the high/low side separate pwm setting so you should be able to run the code on this board as well.