SPI Commnucaion

[Rajfrance]

Hi, I am interface  ESP32 MCU to STM32H757-Eval board SPI communication, ESP32 is master side and STM32H757 is slave side below the pin configure, esp32 side send data but stm32h757 not received in debug mode, how to solve this 

 

 

 

 

[KnarfB]

>  not received 

Oh, no, you received three 0xFF. So you are half way on the right path. SPI comes in several flavors: CPOL, CPHA, ... Make sure that they all match on both sides. You may post all SPI settings.

hth

KnarfB 

[Ozone]

> You may post all SPI settings.

Or alternatively, a screenshot of the observed signal.