testmatrixbutton.c

来自「矩阵button驱动」· C语言 代码 · 共 49 行

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

#include "btnIO.h"



int main()
{
    int fd=-1;
    unsigned char positon[2]={0};
    unsigned char ch=0;
    fd=open("/dev/matrix_button",O_RDWR);
    if(fd<0)
    {
        printf("open matrix_button failure\n");
        return fd;
    }
    else
    {
        printf("open matrix_button successfully\n");
    }

    while(1)
    {
        //read(fd,&ch,1);
        ch = btnRead(fd);
        /*
        if( positon[0] && (positon[0] & ~0x80) )
        {
            printf("position(%x,%x)\n",positon[0],positon[1]);
        }
        */

        printf("button :::%c\n",ch);
        ch=0;
        //sleep(1);

    }
    close(fd);
    printf("close matrix_button successfully\n");
    
    return 0;
}