test.c

来自「generic driver for s3c2440 under linux」· C语言 代码 · 共 64 行

//============================================================================
// Name        : test_camera.cpp
// Author      :
// Version     :
// Copyright   : Your copyright notice
// Description : Hello World in C, Ansi-style
//============================================================================

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <time.h>
#include <linux/delay.h>
#include <poll.h>

#include <signal.h>

#define DIMENS 100

int main(void) {
	static int fd;
	int i;
	struct pollfd poll_data;
	int valoare;
	unsigned char bval;

    unsigned char buffer[DIMENS];
    int citit;

    fd = open("/dev/PORTJ", O_RDWR);
    if (fd < 0)
    {
         printf("Eroare open portj\n");
         return -1;
    }

 while(1)
{
    //citit=read(fd , &valoare , DIMENS);
	valoare=0;
    citit=read(fd , &valoare , 4);
    printf("Valoare = %x\n", valoare);

    //citit=read(fd , &bval , 1);
    //printf("Valoare = %x\n", bval);

  
	getchar();

}

    close(fd);


	puts("Hello World!!!");
	return EXIT_SUCCESS;
}