static void uart_event_task(void *pvParameters)
{
uart_event_t event;
for(;;) {
//阻塞接收串口队列，
//这个队列在底层发送，用户只需在应用层接收即可
if(xQueueReceive(uart_queue, (void * )&event, (portTickType)portMAX_DELAY)) {
switch(event.type) {//各种串口事件
case UART_DATA:
ESP_LOGI(TAG, "[UART DATA]: %d", event.size);
uart_read_bytes(EX_UART_NUM, uartbuf, event.size, portMAX_DELAY); //阻塞接收
ESP_LOGI(TAG, "[DATA EVT]:");
uart_write_bytes(EX_UART_NUM, uartbuf, event.size);//原样发送
break;
//Event of HW FIFO overflow detected
case UART_FIFO_OVF: //硬件fifo溢出
ESP_LOGI(TAG, "hw fifo overflow");
// If fifo overflow happened, you should consider adding flow control for your application.
// The ISR has already reset the rx FIFO,
// As an example, we directly flush the rx buffer here in order to read more data.
uart_flush_input(EX_UART_NUM);
xQueueReset(uart_queue);
break;
//Event of UART ring buffer full
case UART_BUFFER_FULL: //环形缓冲区满
ESP_LOGI(TAG, "ring buffer full");
// If buffer full happened, you should consider encreasing your buffer size
// As an example, we directly flush the rx buffer here in order to read more data.
uart_flush_input(EX_UART_NUM);
xQueueReset(uart_queue);
break;
//Event of UART RX break detected
case UART_BREAK:
ESP_LOGI(TAG, "uart rx break");
break;
//Event of UART parity check error
case UART_PARITY_ERR:
ESP_LOGI(TAG, "uart parity error");
break;
//Event of UART frame error
case UART_FRAME_ERR:
ESP_LOGI(TAG, "uart frame error");
break;
//UART_PATTERN_DET
case UART_PATTERN_DET:
break;
//Others
default:
ESP_LOGI(TAG, "uart event type: %d", event.type);
break;
}
}
}
vTaskDelete(NULL);
}
