SD card status unclear

[rusefillc]

SD card does not show as MSD

could be rusefi/rusefi#5097

[rusefillc]

• something is not great with board PDF - search for "SD_CS" does not find me SD_CS text
  when I search for MOSI at least I see SD_MOSI but I only see it once, how do I know where is SD card connected to?!

Overall at the moment both mm-01 and mm-02 I have not seen SD card working. What is SD_CS pin just to confirm @Qwerty-OFF ?

[Qwerty-OFF]

Use SPI1 with PB6 CS

[rusefillc]

@Qwerty-OFF where can I see this on the PDF?

[rusefillc]

just changed to SPI1 and still does not work

2023-02-19_13_49_52_243: EngineState: pin PB3: SPI clock
2023-02-19_13_49_52_247: EngineState: pin PB4: SPI master in 
2023-02-19_13_49_52_248: EngineState: pin PB5: SPI master out
2023-02-19_13_49_52_249: EngineState: pin PB6: SD CS

[rusefillc]

PDF search issue starts at hellen-one/modules/mega-mcu144/0.2/mega-mcu144-schematic.pdf

if I search for "_mosi" it gives me ACC_MOSE spi1_mosi spi2_mosi spi3_mosi but nothing about SD

[rusefillc]

Good news SD card lines are going at least somewhere :)

[andreika-git]

We had an external hardware pull-up on SPI1-MOSI because sometimes we needed +5V compatibility and enabled software OPEN-DRAIN mode on MOSI pin:

mcu144:

[rusefillc]

2chan

[dron0gus]

"I'm not going to have per-board board.c file."
All f4 boards use some random board.c file from STM F4 Discovery board https://github.com/rusefi/rusefi/blob/d1e35213c66ddfc15cd502b980102abe0b2af917/firmware/hw_layer/ports/stm32/stm32f4/hw_ports.mk#L11
__early_init() is also used from this file. It calls stm32_gpio_init() that is again Discovery-board-specific.
This function set PA5, PA6, PA7 for SPI1 function.
Does any other code reset SPI1 function for these pins before setting PB3, PB4, PB5?

[rusefillc]

@dron0gus same nothing :(