?? keypad.c
字號:
/*
#include <linux/ioctl.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>*/
#include <unistd.h>
#include <fcntl.h>
static int fd = -1;
void main(void)
{
int result;
char buf[2]={0,};
fd=open("/dev/keypad",O_NONBLOCK,0);
if(fd<0)
{
return -1;
printf("Can't open\n");
}
while(1)
{
result= read(fd,buf,sizeof(buf));
if(result>0)
{
printf("result = %d \n", result);
if(buf[0]==0x01){
if(buf[1] == 0x0) printf("z");
else if(buf[1] == 0x1) printf("1");
else if(buf[1] == 0x2) printf("2");
else if(buf[1] == 0x3) printf("3");
else if(buf[1] == 0x4) printf("4");
}
else if(buf[0] == 0x02){
if(buf[1] == 0x0) printf("a");
else if(buf[1] == 0x1) printf("b");
else if(buf[1] == 0x2) printf("c");
else if(buf[1] == 0x3) printf("d");
else if(buf[1] == 0x4) printf("e");
}
else if(buf[0] == 0x04){
if(buf[1] == 0x0) printf("t");
else if(buf[1] == 0x1) printf("f");
else if(buf[1] == 0x2) printf("g");
else if(buf[1] == 0x3) printf("h");
else if(buf[1] == 0x4) printf("i");
}
else if(buf[0] == 0x08){
if(buf[1] == 0x0) printf("j");
else if(buf[1] == 0x1) printf("k");
else if(buf[1] == 0x2) printf("l");
else if(buf[1] == 0x3) printf("m");
else if(buf[1] == 0x4) printf("n");
}
else if(buf[0] == 0x10){
if(buf[1] == 0x0) printf("o");
else if(buf[1] == 0x1) printf("p");
else if(buf[1] == 0x2) printf("q");
else if(buf[1] == 0x3) printf("r");
else if(buf[1] == 0x4) printf("s");
}
else if(buf[0] == 0x20){
if(buf[1] == 0x0) printf("u");
else if(buf[1] == 0x1) printf("v");
else if(buf[1] == 0x2) printf("w");
else if(buf[1] == 0x3) printf("x");
else if(buf[1] == 0x4) printf("y");
}
}
}
}
#if 0
void main(void)
{
int result;
char buf[2]={0,};
fd=open("/dev/keypad",O_NONBLOCK,0);
if(fd<0) return -1;
while(1)
{
result= read(fd,buf,sizeof(buf));
if(result>0)
{
if(buf[0]==0x01){
if(buf[1] == 0x0) printk('Z');
else if(buf[1] == 0x1) write(1,"1",1);
else if(buf[1] == 0x2) write(1,"2",1);
else if(buf[1] == 0x3) write(1,"3",1);
else if(buf[1] == 0x4) write(1,"4",1);
}
else if(buf[0] == 0x02){
if(buf[1] == 0x0) write(1,"U",1);
else if(buf[1] == 0x1) write(1,"V",1);
else if(buf[1] == 0x2) write(1,"W",1);
else if(buf[1] == 0x3) write(1,"X",1);
else if(buf[1] == 0x4) write(1,"y",1);
}
else if(buf[0] == 0x04){
if(buf[1] == 0x0) write(1,"P",1);
else if(buf[1] == 0x1) write(1,"Q",1);
else if(buf[1] == 0x2) write(1,"R",1);
else if(buf[1] == 0x3) write(1,"S",1);
else if(buf[1] == 0x4) write(1,"T",1);
}
else if(buf[0] == 0x08){
if(buf[1] == 0x0) write(1,"K",1);
else if(buf[1] == 0x1) write(1,"L",1);
else if(buf[1] == 0x2) write(1,"M",1);
else if(buf[1] == 0x3) write(1,"N",1);
else if(buf[1] == 0x4) write(1,"O",1);
}
else if(buf[0] == 0x10){
if(buf[1] == 0x0) write(1,"F",1);
else if(buf[1] == 0x1) write(1,"G",1);
else if(buf[1] == 0x2) write(1,"H",1);
else if(buf[1] == 0x3) write(1,"I",1);
else if(buf[1] == 0x4) write(1,"J",1);
}
else if(buf[0] == 0x20){
if(buf[1] == 0x0) write(1,"A",1);
else if(buf[1] == 0x1) write(1,"B",1);
else if(buf[1] == 0x2) write(1,"C",1);
else if(buf[1] == 0x3) write(1,"D",1);
else if(buf[1] == 0x4) write(1,"E",1);
}
}
}
}
#endif
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