ir.rar_遥控器 测试

/* * Sample IR user level program */ #include <stdio.h> #include <fcntl.h> #include <stdlib.h> #include <unistd.h> #include <signal.h> #include <string.h> #include <sys/select.h> #include <sys/time.h> #include <sys/ioctl.h> #include "ir.h" /* ioctl commands for user level applications*/ #define IR_IOC_MAGIC 'I' #define IR_IOCSETREPEATKEYS _IO(IR_IOC_MAGIC, 0) #define IR_IOCGETREPEATKEYS _IO(IR_IOC_MAGIC, 1) #define IR_IOCSETWAITPERIOD _IO(IR_IOC_MAGIC, 2) #define IR_IOCGETWAITPERIOD _IO(IR_IOC_MAGIC, 3) /* IR device node and file handle */ static const char *dev = "/dev/ir"; int fno = -1; unsigned long repeatkey[] = {0xeb14e608,0xe916e608,0xe21de608,0xee11e608}; int ir_get_repetition_keys(unsigned int *num_keys, unsigned long *keys) { unsigned long buf[256]; int res; res = ioctl(fno, IR_IOCGETREPEATKEYS, (unsigned long)buf); if (res == 0) { if (buf[0] < *num_keys) *num_keys = buf[0]; /* # of kets and followed bt the keys */ else printf("Got %ld auto-repeat keys, can report only %d\n", buf[0], *num_keys); memcpy(keys, &buf[1], sizeof(unsigned long) * *num_keys); } return res; } int ir_set_repetition_keys(unsigned int num_keys, unsigned long *keys) { unsigned long buf[256]; int res; buf[0] = num_keys; memcpy(&buf[1], keys, sizeof(unsigned long) * buf[0]); res = ioctl(fno, IR_IOCSETREPEATKEYS, (unsigned long)buf); return res; } int openkey(void) { unsigned flags = O_RDONLY; if ((fno = open(dev, flags)) < 0) { printf("error opening %s\n", dev); return 0; } return 1; } int closekey(void) { if(fno) { close(fno); fno = -1; } return 0; } unsigned long getkey(void) { unsigned long l = 0; fd_set rfds; struct timeval tv; int ret; FD_ZERO(&rfds); FD_SET(fno, &rfds); tv.tv_sec = 0; tv.tv_usec = 10000; ret = select(fno + 1, &rfds, NULL, NULL, &tv); if (read(fno, &l, sizeof(unsigned long)) > 0) return l; else return 0; } int main(int argc, char *argv[]) { unsigned long key; if(!openkey()) return 0; ir_set_repetition_keys(4,repeatkey); while(1) { key=getkey(); fprintf(stderr,"key = 0x%x\n\n\n\n",key); } closekey(); return 0; }