/*
* Main
*/
int main(int argc, char **argv, char **envp)
{
struct pollfd fdset[2];
int nfds = 2;
int gpioFd, timeout, rc;
char *buf[maxBuff];
unsigned int gpio, led;
bool toggleLED = true;
int len;
if (argc < 2) {
printf("Usage: gpio-int <gpio-pin>\n\n");
printf("Waits for a change in the GPIO pin voltage level or input on stdin\n");
exit(-1);
}
gpio = atoi(argv[1]);
led = atoi(argv[2]);
GpioExport(gpio);
GpioExport(led);
GpioSetDir(gpio, 0);
GpioSetDir(led, 1);
GpioSetEdge(gpio, "rising");
gpioFd = GpioFdOpen(gpio);
timeout = pollTimeout;
while (1) {
memset((void*)fdset, 0, sizeof(fdset));
fdset[0].fd = STDIN_FILENO;
fdset[0].events = POLLIN;
fdset[1].fd = gpioFd;
fdset[1].events = POLLPRI;
rc = poll(fdset, nfds, timeout);
if (rc < 0) {
printf("\npoll() failed!\n");
return -1;
}
if (rc == 0) {
printf(".");
}
if (fdset[1].revents & POLLPRI) {
len = read(fdset[1].fd, buf, maxBuff);
printf("\npoll() GPIO %d interrupt occurred\n", gpio);
if (toggleLED) GpioSetValue(led,0);
else GpioSetValue(led,1);
toggleLED =! toggleLED;
}
if (fdset[0].revents & POLLIN) {
(void)read(fdset[0].fd, buf, 1);
printf("\npoll() stdin read 0x%2.2X\n", (unsigned int) buf[0]);
}
fflush(stdout);
}
GpioFdClose(gpioFd);
return 0;
}
int ButtonGet(void)
{
int ret;
int fd1;
int fd2;
int fd3;
long int start;
long int end;
#if 0
struct pollfd pollKey[3];
int retPoll;
char buffer[2];
#endif
uint8_t val1;
uint8_t val2;
uint8_t val3;
uint8_t val1_old = 0;
uint8_t val2_old = 0;
uint8_t val3_old = 0;
int result = 0;
ret = 0;
ret += GpioFdOpen(PIN_KEY_1, &fd1);
ret += GpioFdOpen(PIN_KEY_2, &fd2);
ret += GpioFdOpen(PIN_KEY_3, &fd3);
if (ret != 3) {
return -1;
}
#if 0
bzero(pollKey, sizeof(pollKey));
pollKey[0].fd = fd1;
pollKey[0].events = POLLPRI;
pollKey[1].fd = fd2;
pollKey[1].events = POLLPRI;
pollKey[2].fd = fd3;
pollKey[2].events = POLLPRI;
while (!ende) {
retPoll = poll(pollKey, 3, 1000);
if (retPoll < 0) {
if (errno == EINTR) {
continue;
} else {
printf("Error: %i\n", errno);
break;
}
} else if (retPoll == 0) {
// timeout
//printf(".\n");
} else {
if (pollKey[0].revents & POLLPRI) {
ret = read(fd1, buffer, 2);
printf("Taste 1: %c\n", buffer[0]);
usleep(DEBOUNCE * 1000);
lseek(fd1, 0, SEEK_SET);
result = '1';
break;
}
if (pollKey[1].revents & POLLPRI) {
ret = read(fd2, buffer, 2);
printf("Taste 2: %c\n", buffer[0]);
usleep(DEBOUNCE * 1000);
lseek(fd2, 0, SEEK_SET);
result = '2';
break;
}
if (pollKey[2].revents & POLLPRI) {
ret = read(fd3, buffer, 2);
printf("Taste 3: %c\n", buffer[0]);
usleep(DEBOUNCE * 1000);
lseek(fd3, 0, SEEK_SET);
result = '3';
break;
}
}
}
GpioFdClose(fd1);
GpioFdClose(fd2);
GpioFdClose(fd3);
#endif
start = GetTime();
while (!gEnde) {
if (gConfig.mTimeout) {
end = GetTime();
if (end - start >= gConfig.mTimeout) {
result = ASCII_CAN;
break;
}
}
GpioGetValue(PIN_KEY_1, &val1);
GpioGetValue(PIN_KEY_2, &val2);
GpioGetValue(PIN_KEY_3, &val3);
if (val1 != val1_old && val1 == 0) {
usleep(DEBOUNCE * 1000);
result = '1';
break;
}
if (val2 != val2_old && val2 == 0) {
usleep(DEBOUNCE * 1000);
result = '2';
break;
}
if (val3 != val3_old && val3 == 0) {
usleep(DEBOUNCE * 1000);
result = '3';
break;
}
val1_old = val1;
val2_old = val2;
val3_old = val3;
usleep(50 * 1000);
}
return result;
}