testaccele.c

这是基于在linux系统下基于PXA255平台的加速度计的驱动程序以及加速度计的测试程序。

#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>

		struct acce_point{
			unsigned int x;
			unsigned int y;
		};
 
int main(int argc, char **argv)
 		{
		int fd;
		struct acce_point tmp;

			
 			fd=open("/dev/acce", O_RDONLY);

		if(fd < 0)
			perror("open");
		else
			printf("open succed\n");

 			while(1){

       int n = read(fd, &tmp, sizeof(struct acce_point));
		if(n < 0)
			perror("read");
	else
			printf("n = %d\n", n);
        printf("%d, %d",tmp.x,tmp.y);
sleep(1);


}
 		
 			
			close(fd); //close device file
 		}