STM32H750VB SPI Init Advanced Not Working

[s_sergiu]

Hello,

I tested today a PCB with STM32H750VB connected to one MPU6000 board in SPI mode.
Using other compiler (Keil uVision) I can read and write the MPU6000 without problems.
However SPI Init Advance in mikroBasic is not working.
Reading the SPI2_CFG1 and SPI2_CFG2 in debug mode will show default (after reset) values.

RCC_APB1LENR.SPI2EN = 1
SPI2_Init_Advanced(_SPI_FPCLK_DIV256, _SPI_MASTER OR _SPI_8_BIT OR _SPI_CLK_IDLE_HIGH OR
_SPI_SECOND_CLK_EDGE_TRANSITION OR _SPI_MSB_FIRST OR _SPI_SS_DISABLE OR
_SPI_SSM_ENABLE OR _SPI_SSI_1, @_GPIO_MODULE_SPI2_PB13_14_15)
SPI_Set_Active(@SPI2_Read, @SPI2_Write)

to make work SPI_CLK_IDLE_HIGH I had to use CPOL_SPI2_CFG2_bit = 1. Same for Master mode.
Also _SPI_FPCLK_DIV256 (or other DIV values) will not change MBR[2:0] in SPI2_CFG1 from default 000.
The strange thing is that while MOSI signal looks nice square in oscilloscope between 0 to 3.3V, the CLK signal looks distorted and shifted between 2 to 3.3V.
I suppose that GPIO AF are not set up properly.

Any help is appreciated.
Sergiu

[filip]

Hi,

Which version of the compiler are you using ?

Regards,
Filip.

[s_sergiu]

Hello Filip,

I use the latest version 6.2.0.
I tested all SPI ports from 1 to 6.
I also changed the mcu to H743ZI in project settings with same reasults.
I worked at registers level (according to stm32h750 reference manual) and I can send one bytes at a time on MOSI which looks good in oscilloscope but strugling with receiving part.
It will be great if the SPI library for H7 can be fixed.


Regards,
Sergiu