AT-SPI SDSPI with STM32 doesn't work

MichaelXlivnenko commented 9 months ago

Answers checklist.

[x] I have read the documentation ESP-AT Programming Guide and the issue is not addressed there.
[x] I have used the latest released firmware or have updated my ESP-AT branch (master or release) to the latest version and checked that the issue is present there.
[X] I have searched the issue tracker for a similar issue and not found a similar issue.

General issue report

HI,

I'm trying to port SDSPI example to STM32L4, but it doesn't work.

As you noted in README, I was starting with checking that hardware works well. First that I do - upload ESP-AT to ESP32 as slave(using the latest version of core, esp-idf v.5.0.2 and ESP-WROOM-32 devkit). Then I upload ESP example from SDSPI folder and all works fine.("AT" command return "OK")

Then I tried with STM32F103ZE dev board to check the STM32 example before porting and it doesn't work.

The connection is next:

STM32 ---> ESP32 SCLK (PA5) ---> CLK(GPIO14) MOSI (PA7) ---> CMD(GPIO15) MISO (PA6) ---> DAT0(GPIO2) GPIO_INT (PA0) ---> DAT1(GPIO4) CS (PA4) ---> DAT3(GPIO13)

All lines excluding CLK is pulled-up with 10 kOhms resistors. Project was build using STM32CubeIDE from .ioc config file from example and all code is copied from example.

Debug console oputput:

10:24:14.414 -> E sdspi_trI sdspi_transaction: IOE: 0x02 10:24:16.191 -> I sdspi_transaction: IE: 0x03 10:24:16.191 -> I sdspi_transaction: BUS_WIDTH: 0x40 10:24:16.191 -> I sdspi_transaction: BUS_WIDTH: 0x60 10:24:16.191 -> I sdspi_transaction: Function 1 BS: 0000 10:24:16.191 -> I sdspi_transaction: Function 1 BS: 0200 10:24:16.191 -> D sdspi_transaction: spi_io_read_bytes, will transfer size: 4

and then all is stucked

This is the datagramma of all lines after reset: