写一个esp32 idf使用rtos消息队列转发串口接收到的数据到mqtt服务器的程序
时间: 2023-03-22 21:01:53 浏览: 82
你好,我将为您提供一个基于ESP32-IDF使用RTOS消息队列将串口接收到的数据转发到MQTT服务器的程序。请注意,以下程序仅供参考,并非完整且不保证可用性。在实际使用中需要根据您的具体需求进行修改。
首先,需要在ESP32上设置串口并连接到MQTT服务器。您需要安装ESP32-IDF,并使用以下代码设置串口和MQTT连接:
```
#include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/queue.h"
#include "driver/uart.h"
#include "mqtt_client.h"
#define BUF_SIZE (1024)
#define UART_PORT_NUM (1)
#define UART_BUF_SIZE (1024)
#define MQTT_BUF_SIZE (1024)
static const char *TAG = "mqtt_example";
static const int RX_BUF_SIZE = 1024;
static QueueHandle_t uart0_queue;
static void uart_event_task(void *pvParameters)
{
uart_event_t event;
uint8_t* dtmp = (uint8_t*) malloc(RX_BUF_SIZE+1);
for(;;) {
//Waiting for UART event.
if(xQueueReceive(uart0_queue, (void * )&event, (portTickType)portMAX_DELAY)) {
bzero(dtmp, RX_BUF_SIZE+1);
//ESP_LOGI(TAG, "uart[%d] event:", UART_NUM_1);
switch(event.type) {
//Event of UART receving data
//We'd better handler data event fast, there would be much more data events than
//other types of events. If we take too much time on data event, the queue might be full.
case UART_DATA:
uart_read_bytes(UART_PORT_NUM, dtmp, event.size, portMAX_DELAY);
ESP_LOGI(TAG, "Read %d bytes: %s", event.size, dtmp);
// TODO: 将接收到的数据放入消息队列中。
break;
//Event of HW FIFO overflow detected
case UART_FIFO_OVF:
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(UART_PORT_NUM);
xQueueReset(uart0_queue);
break;
//Event of UART ring buffer full
case UART_BUFFER_FULL:
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(UART_PORT_NUM);
xQueueReset(uart0_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:
ESP_LOGI(TAG, "uart pattern detected");
break;
//Others
default:
ESP_LOGI(TAG, "uart event type: