How do I know if the SPI is correctly working, if I can only check on the master's board? I have an STM32F429ZI Nucleo board (for SPI master and UART to check everything's working alright) and an EVB-LAN9252-SPI board(for SPI slave).I have to check if the SPI is correctly working, but it seems that I can't debug or check on the slave's side.Shown below is the test code I worked on the STM32F429ZI Nucleo board to check if the SPI is working correctly. SPI1 and SPI4 is configured in one board. while (k < 32)
{
HAL_UART_Transmit(&huart4, &SPI1_Buffer_Tx[k], 1, 100);
k++;
}
k = 0;
while (k < 32)
{
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_9, GPIO_PIN_RESET); // this GPIO is connected to hardware NSS
HAL_SPI_Transmit(&hspi1, &SPI1_Buffer_Tx[k], 1, 100);
HAL_SPI_Receive(&hspi4, &SPI4_Buffer_Rx[k], 1, 100);
HAL_GPIO_WritePin(GPIOE, GPIO_PIN_9, GPIO_PIN_SET);
k++;
}
k = 0;
while (k < 32)
{
HAL_UART_Transmit(&huart4, &SPI1_Buffer_Tx[k], 1, 100);
k++;
}
k = 0;
while (k &
