【米尔王牌产品MYD-Y6ULX-V2开发板试用体验】驱动步进电机

工控板驱动步进电机，是项目中常用的场景。今天试着用三个IO驱动步进电机：
【硬件准备】
1、开发板。
2、步进电机驱动器，前面活动中申请到【免费试用13期】TB5128FTG步进电机驱动套件

3、步进电机一个。
4、杜绑线。
5、可调数控电源。
【接线原理图】

【程序】

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/wait.h>

FILE *fp=NULL;

int init_io(void)
{
    
    fp = fopen("/sys/class/gpio/export", "w");
    if (fp == NULL)
    {
        perror("fopen");
        return -1;
    }
    fprintf(fp,"%d",24);
    fclose(fp);
    fp = fopen("/sys/class/gpio/export", "w");
    if (fp == NULL)
    {
        perror("fopen");
        return -1;
    }
    fprintf(fp,"%d",25);
    fclose(fp);
    fp = fopen("/sys/class/gpio/export", "w");
    if (fp == NULL)
    {
        perror("fopen");
        return -1;
    }
    fprintf(fp,"%d",26);
    fclose(fp);
    
    fp = fopen("/sys/class/gpio/gpio24/direction","w");
    fprintf(fp,"out");
    fclose(fp);
    fp = fopen("/sys/class/gpio/gpio25/direction","w");
    fprintf(fp,"out");
    fclose(fp);
    fp = fopen("/sys/class/gpio/gpio26/direction","w");
    fprintf(fp,"out");
    fclose(fp);
}

void io_ena(int value)
{
    fp = fopen("/sys/class/gpio/gpio26/value", "w");
    fprintf(fp,"%d", value);
    fclose(fp);
}

void io_Dir(int value)
{
    fp = fopen("/sys/class/gpio/gpio25/value", "w");
    fprintf(fp,"%d", value);
    fclose(fp);
}
void close_IO(void)
{
    fp = fopen("/sys/class/gpio/unexport","w");
    fprintf(fp,"%d",24);
    fclose(fp);
    fp = fopen("/sys/class/gpio/unexport","w");
    fprintf(fp,"%d",25);
    fclose(fp);
    fp = fopen("/sys/class/gpio/unexport","w");
    fprintf(fp,"%d",26);
    fclose(fp);

}
void pwm_PULL(int times)
{
    int i;
    for (i = 0; i < times; i++)
    {
        fp = fopen("/sys/class/gpio/gpio24/value", "w");
        fprintf(fp,"%d", 1);
        usleep(10);
        fclose(fp);
        fp = fopen("/sys/class/gpio/gpio24/value", "w");
        fprintf(fp,"%d", 0);
        usleep(10);
        fclose(fp);
    }
}

int main(void)
{
    init_io();
    io_ena(1);//diable en
    io_Dir(1); //正转
    io_ena(0);
    pwm_PULL(500);
    sleep(1);
     io_Dir(0); //正转
     pwm_PULL(500);
    close_IO();
    return 0;
    
}

编译上传开发板，运行程序，就可以实现电机的正反转。