source: drsdaq/VME/struck/sis1100/V2.02/test/frontout_3100.c@ 23

#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <signal.h>

#include "dev/pci/sis1100_var.h"

/****************************************************************************/
int main(int argc, char* argv[])
{
        int p, count=0;
        if (argc!=2) {
                fprintf(stderr, "usage: %s path\n", argv[0]);
                return 1;
        }

        if ((p=open(argv[1], O_RDWR, 0))<0) return 1;

        while (1) {
                struct sis1100_ctrl_reg reg;
                int ioreg;

                ioreg=(count&0x7f) | ((~count&0x7f)<<16);

                reg.offset=0x80;
                reg.val=ioreg;
                if (ioctl(p, SIS3100_CONTROL_WRITE, &reg)<0) {
                        perror("SIS3100_CONTROL_WRITE");
                        return -1;
                }
                if (reg.error) printf("write ioreg error=%x\n", reg.error);

                if (ioctl(p, SIS3100_CONTROL_READ, &reg)<0) {
                        perror("SIS3100_CONTROL_READ");
                        return -1;
                }
                if (reg.error) printf("read ioreg error=%x\n", reg.error);

                ioreg=reg.val;
                printf("count=%x ioreg=0x%08x\n", count, ioreg);

                sleep(1);
                count++;
        }

        close(p);
        return 0;    
}
/****************************************************************************/
/****************************************************************************/