#define RX_BUFFER_SIZE 12
/* Private variables ---------------------------------------------------------*/
uint8_t rx_buffer[RX_BUFFER_SIZE]; // Buffer to store received data
/* Function Prototypes */
void SystemClock_Config(void);
int main(void)
{
/* Initialize the HAL library and configure the system clock */
HAL_Init();
SystemClock_Config();
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_USART1_UART_Init();
MX_USART2_UART_Init();
MX_I2C1_Init();
/* Start UART reception in interrupt mode */
HAL_UART_Receive_IT(&huart1, rx_buffer, RX_BUFFER_SIZE);
while (1)
{
// Main loop can perform other tasks or remain idle
HAL_Delay(1000); // Placeholder for other tasks or a low-power sleep mode
}
}
/* Callback function triggered when RX buffer is full */
void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart)
{
if (huart->Instance == USART1) // Check if the interrupt is from USART1
{
// Echo the received data back for verification
// HAL_UART_Transmit(&huart1, rx_buffer, RX_BUFFER_SIZE, HAL_MAX_DELAY);
// Clear the buffer if needed
memset(rx_buffer, 0, RX_BUFFER_SIZE);
// Restart UART reception in interrupt mode
HAL_UART_Receive_IT(&huart1, rx_buffer, RX_BUFFER_SIZE);
}
}
/* Error handler for UART */
void HAL_UART_ErrorCallback(UART_HandleTypeDef *huart)
{
if (huart->Instance == USART1)
{
// Optionally handle errors (e.g., reinitialize or reset)
HAL_UART_Receive_IT(&huart1, rx_buffer, RX_BUFFER_SIZE);
}
}
