ESP32 ESP-IDF UART使用模式检测中断报告事件实现收发数据

最新推荐文章于 2025-06-05 14:56:10 发布

sudaroot

最新推荐文章于 2025-06-05 14:56:10 发布

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CC 4.0 BY-SA版权

分类专栏： ESP32

本文链接：https://blog.youkuaiyun.com/sudaroot/article/details/105436461

官网esp-idf参考代码：D:\esp-idf\examples\peripherals\uart\uart_events

开发环境：Source Insight + esp-idf

esp32模块：ESP32-WROOM-32

实现功能：使用ESP32的3个UART全部实现收发，要求3个UART同时接收每条数据长度25间隔时间为100ms。

初期看了一下官网的uart例程代码，官网推荐使用模式检测。自己也可以使用直接在ISR中处理中断。

#include <stdio.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "driver/uart.h"
#include "freertos/queue.h"
#include "driver/gpio.h"


#define BUF_SIZE				(1024)
#define RD_BUF_SIZE 			(BUF_SIZE)


uart_event_t    uart0_event, uart1_event, uart2_event;
QueueHandle_t	uart0_queue, uart1_queue, uart2_queue;


void uart_event_handle(uart_port_t uart_num, QueueHandle_t queue, uart_event_t *event);





void app_main(void)
{
	uart_config_t	uart_config =
	{
		.baud_rate			= 115200,
		.data_bits			= UART_DATA_8_BITS,
		.parity 			= UART_PARITY_DISABLE,
		.stop_bits	        = UART_STOP_BITS_1,
		.flow_ctrl			= UART_HW_FLOWCTRL_DISABLE
	};
    
	uart_param_config(UART_NUM_0, &uart_config);
	uart_param_config(UART_NUM_1, &uart_config);
	uart_param_config(UART_NUM_2, &uart_config);

	uart_set_pin(UART_NUM_0, GPIO_NUM_1,  GPIO_NUM_3,  UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
	uart_set_pin(UART_NUM_1, GPIO_NUM_18, GPIO_NUM_19, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
	uart_set_pin(UART_NUM_2, GPIO_NUM_16, GPIO_NUM_17, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);

	uart_driver_install(UART_NUM_0, BUF_SIZE * 2, BUF_SIZE * 2, 20, &uart0_queue, 0);
	uart_driver_install(UART_NUM_1, BUF_SIZE * 2, BUF_SIZE * 2, 20, &uart1_queue, 0);
	uart_driver_install(UART_NUM_2, BUF_SIZE * 2, BUF_SIZE * 2, 20, &uart2_queue, 0);

	uart_pattern_queue_reset(UART_NUM_0, 20);
	uart_pattern_queue_reset(UART_NUM_1, 20);
	uart_pattern_queue_reset(U