1 files changed, 6 insertions, 4 deletions

diff --git a/Src/main.c b/Src/main.c
index 1afa688..6f7f8a4 100644
--- a/Src/main.c
+++ b/Src/main.c
@@ -51,7 +51,7 @@
 #define I2C_ADDRESS 0x30F

 

 /* Macro to toggle between master and slave firmware */

-/* #define MASTER */

+#define MASTER

 /* USER CODE END PM */

 

 /* Private variables ---------------------------------------------------------*/

@@ -157,15 +157,17 @@ int main(void)
 

 	uint8_t MDR_ACK_buf[8] = {0};

 	HAL_Delay(100);

-	if (HAL_I2C_Master_Receive(&hi2c1, (uint8_t)I2C_ADDRESS, (uint8_t*)MDR_ACK_buf, 3, 10000) != HAL_OK) {

+	while (HAL_I2C_Master_Receive(&hi2c1, (uint8_t)I2C_ADDRESS, (uint8_t*)MDR_ACK_buf, s2m_MDR_req_ACK_size, 100) != HAL_OK) {

+	    if (HAL_I2C_GetError(&hi2c1) != HAL_I2C_ERROR_AF) {

 #ifdef DEBUG_ENABLE

 		sprintf((char*)debug_buf, "Unable to get MDR ACK. I2C error: %ld\r\n", HAL_I2C_GetError(&hi2c1));

 		HAL_UART_Transmit(&huart1, debug_buf, sizeof(debug_buf), 100);

 		memset(debug_buf, 0, 128);

 #endif /* DEBUG_ENABLE */

+		break;

+	    }

 	}

 	

-	

 #ifdef TESTING_ENABLE

 	uint8_t bufbuf2[] = "MDR ACK buffer: ";

 	HAL_UART_Transmit(&huart1, bufbuf2, sizeof(bufbuf2), 100);

@@ -292,7 +294,7 @@ int main(void)
 

 	HAL_GPIO_TogglePin(led_GPIO_Port, led_Pin);

 

-	if (HAL_I2C_Slave_Transmit(&hi2c1, (uint8_t*)MDR_ACK_buf, 2, 10000) != HAL_OK) {

+	if (HAL_I2C_Slave_Transmit(&hi2c1, (uint8_t*)MDR_ACK_buf, s2m_MDR_req_ACK_size, 10000) != HAL_OK) {

 #ifdef DEBUG_ENABLE

 	    sprintf((char*)debug_buf, "Unable to send MDR ACK. I2C error: %ld\r\n", HAL_I2C_GetError(&hi2c1));

 	    HAL_UART_Transmit(&huart1, debug_buf, sizeof(debug_buf), 100);