ESP32 TWAI（can总线）设备通信

最新推荐文章于 2025-03-27 16:04:14 发布

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最新推荐文章于 2025-03-27 16:04:14 发布

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#单片机 #嵌入式硬件

#include <stdio.h>
#include <stdlib.h>
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/semphr.h"
#include "esp_err.h"
#include "esp_log.h"
#include "driver/twai.h"

#define EXAMPLE_TAG "TWAI master"
#define SENDMSG 0
#define RECEIVEMSG 1
#define RX_GPIO_PIN    36
#define TX_GPIO_PIN    37

/* --------------------------- Tasks and Functions -------------------------- */

void printf_msg(int flag, twai_message_t *msg) // flag：0-send 1-receive
{
    int j;
    if (flag)
        printf("Receive: ");
    else
        printf("Send   : ");
    if (msg->extd)
        printf("Extended ");
    else
        printf("Standard ");
    if (msg->rtr)
        printf("Remote Frame, ");
    else
        printf("Data  Frame,  ");
    // printf("ID: 0x%lx", (unsigned long)msg->identifier);
    if (msg->rtr =&#