SPI

spi.c

void q1_SPI_ping_pong() {
	printf("\r\n\r\n\r\nQ1 Ping pong on SPI\r\n");
	char message[] = "That's a SPI message";
	char buffer1[128] = { '\0' };
	char buffer2[128] = { '\0' };
	while(1) {
		HAL_StatusTypeDef status = HAL_SPI_Receive_IT(SPI_S, (uint8_t*) buffer1, LEN_STR(message));
		if (status != HAL_OK) {
			printf("Failed to receiveIT on SPI_S: %d, error 0x%"PRIX32"\r\n", status, HAL_SPI_GetError(SPI_S));
		}
		printf("SPI_M sends message: %s\r\n", message);
		status = HAL_SPI_Transmit(SPI_M, (uint8_t*) message, LEN_STR(message), HAL_MAX_DELAY);
		if (status != HAL_OK) {
			printf("Failed to send data on SPI_M: %d, error 0x%"PRIX32"\r\n", status, HAL_SPI_GetError(SPI_M));
		}
		// wait till data received
		while(!spi5_received);
		printf("SPI_S got   message: %s\r\n\r\n", buffer1);


		status = HAL_SPI_Receive_IT(SPI_M, (uint8_t*) buffer2, LEN_STR(buffer2));
		if (status != HAL_OK) {
			printf("Failed to receiveIT on SPI_M: %d, error 0x%"PRIX32"\r\n", status, HAL_SPI_GetError(SPI_M));
		}
		printf("SPI_S sends message: %s\r\n", buffer1);
		status = HAL_SPI_Transmit(SPI_S, (uint8_t*) buffer1, strlen(buffer1), HAL_MAX_DELAY);
		if (status != HAL_OK) {
			printf("Failed to send data on SPI_S: %d, error 0x%"PRIX32"\r\n", status, HAL_SPI_GetError(SPI_S));
		}
		while(!spi1_received);
		printf("SPI_M got   message: %s\r\n\r\n", buffer2);

		memset(buffer1, '\0', sizeof(buffer1));
		memset(buffer2, '\0', sizeof(buffer2));

		HAL_Delay(3000);

		spi5_received = 0;
		spi1_received = 0;
	}
}