Resolved! On board SPI to SPI in STM32F207ZGT6
#include "main.h" SPI_HandleTypeDef hspi1; SPI_HandleTypeDef hspi3; UART_HandleTypeDef huart3; /* USER CODE BEGIN PV */ char spi_data_tx[1]={'1'}; char spi_data_rx[1]={'0'}; void SystemClock_Config(void); static void MX_GPIO_Init(void); static ...