obcantest.c

arm-linux 下小键盘驱动程序源码

#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include "can.h"
#include <memory.h>

int main()
{
int c0,c1;
struct canmsg_t cd,cs;
int cts = 10;

c0=open("/dev/can0",O_RDWR);
c1=open("/dev/can1",O_RDWR);

if(c0<0||c1<0)
{
  printf("error open can dev\n");
  exit(0);
}

cs.length=8;
cs.id=0;
cs.data[0]=0;cs.data[1]=1;cs.data[2]=2;cs.data[3]=3;

while( cts-- )
{
  memset(&cd,0,sizeof(cd));
  write(c0,&cs,sizeof(cs));
  usleep(1);
  read(c1,&cd,1);
  if(cd.data[0]!=0||cd.data[1]!=1||cd.data[2]!=2||cd.data[3]!=3)
  {
	printf("error in can\n");
	exit(0);
  }
}

close(c1);
close(c0);

printf("can test passed\n");
exit(1);
return 1;
}