stepmotor.c

来自「这是pxa270的步进电机驱动程序」· C语言 代码 · 共 28 行

#include <stdio.h>
#include <stdlib.h>	//system
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <linux/delay.h>
#include <sys/ioctl.h>

#define DEVICE "/dev/mgc270-stepmotor"

static char ctrl[3] = {"09f"}; //OK

int main(int argc, char *argv[])
{
	int fd;

	fd = open(DEVICE, O_RDWR);
	if( fd < 0 ) {
		perror(DEVICE " open failed.\n");
		exit(1);
	}
	
	ioctl(fd, 0, 100, 0);
	write(fd, "19f", 3);
	write(fd, &ctrl, 3);
	return 0;
}