DRV8316 + STM32G431 design request for comments

[runger]

@rambros

I can’t get the arduino_simplefoc_boards working. This error shows with both boards, lepton and microspora.
The generic board defs compile well, but not the simplefoc defs
@runger can you please give some advice, I’m totally lost here.

Dear @rambros - sorry to keep you waiting, I did not manage to get to it until now. I have fixed this error, and updated the simplefoc_arduino_boards repository. It seems a new version of stm32duino requires some extra defines, which I have now added.

If you pull these changes and restart the Arduino IDE it should work for the Lepton board. For your board definition I am not sure if GitHub reflects the current state of your development on it, but I sent you a PR with some changes here:

Get microspora board definition to work

@rambros

ow I know whats wrong, I left out the PIN_ prefix
It is supposed to be like this:

    -D PIN_SPI_MOSI=PB5   ; SPI MOSI
    -D PIN_SPI_MISO=PB4   ; SPI MISO
    -D PIN_SPI_SCK=PB3    ; SPI Clock
    -D PIN_SPI_SS=PC4    ; SPI Chip Select (SS)
    -D DRV_CS=PIN_SPI_SS

With this I can now use the default SPI. No need to manually define a new SPI class.

this can be added to the variant files, to make it automatic…

@rambros

I also didn’t get the current sense to work, I got the error that current sense was not initialized, but not the timer error. I tried different gain settings in 8316.

What’s the exact output you get? Do you have debug output switched on?

For low side current sense you do have to link the driver, but I assume you tried that.

[rambros]

Thanks for updating the boards.

@runger

For low side current sense you do have to link the driver, but I assume you tried that.

Yup you’re right.
Since everything else is working fine, I’m sure it is some silly error on my part.

I will look into it by this weekend.

[Daan87423]

I’ve swapped to the hardware variant of the DRV8316 and tried current sensing again. During the aligning I keep getting an error for phase B. This is the serial output during start-up:

Current sense init success!
MOT: Monitor enabled!
MOT: Init
MOT: Enable driver.
MOT: Align sensor.
MOT: sensor_direction==CCW
MOT: PP check: OK!
MOT: Zero elec. angle: 4.19
MOT: Align current sense.
CS: Inv A
CS: Err align B
MOT: Align error!
MOT: Init FOC failed.
Motor ready.

Not sure what to try for troubleshooting this error. I’m using this config: LowsideCurrentSense current_sense = LowsideCurrentSense(2700, PA2, PA1, PA0);.

I don’t have a oscilloscope right now to measure the phase currents, that will have to wait till next week.