int main() {
// Turn libsoc debug off (0) or on (1)
libsoc_set_debug(0);
printf("Requesting GPIO\n");
gpio* motion_int = libsoc_gpio_request(MOTION_GPIO, LS_SHARED);
printf("Setting direction\n");
libsoc_gpio_set_direction(motion_int, INPUT);
printf("Setting edge\n");
libsoc_gpio_set_edge(motion_int, RISING);
printf("Waiting for interrupt\n");
int ret;
while (1) {
libsoc_gpio_wait_interrupt(motion_int, -1);
printf("Motion detected!\n");
do {
ret = libsoc_gpio_wait_interrupt(motion_int, 1000);
}
while(ret != EXIT_FAILURE);
}
return 0;
}
int main()
{
gpio *gpio_led;
gpio_led = libsoc_gpio_request(GPIO_LED, LS_SHARED);
if ((gpio_led == NULL)) {
fprintf(stderr, "Unable to request GPIOs\n");
goto fail;
}
libsoc_gpio_set_direction(gpio_led, OUTPUT);
if ((libsoc_gpio_get_direction(gpio_led) != OUTPUT)) {
fprintf(stderr, "Unable to set led/btn directions\n");
goto fail;
}
while (1) {
libsoc_gpio_set_level(gpio_led, 1);
usleep(500000);
libsoc_gpio_set_level(gpio_led, 0);
usleep(500000);
}
fail:
if (gpio_led)
libsoc_gpio_free(gpio_led);
return EXIT_SUCCESS;
}
int main(void) {
// Enable debug output
libsoc_set_debug(1);
// Request gpios
gpio_output = libsoc_gpio_request(GPIO_OUTPUT, LS_SHARED);
gpio_input = libsoc_gpio_request(GPIO_INPUT, LS_SHARED);
// Set direction to OUTPUT
libsoc_gpio_set_direction(gpio_output, OUTPUT);
// Set direction to INPUT
libsoc_gpio_set_direction(gpio_input, INPUT);
// Set edge to BOTH
libsoc_gpio_set_edge(gpio_input, BOTH);
// Setup callback
libsoc_gpio_callback_interrupt(gpio_input, &callback_test,
(void*) &interrupt_count);
printf("Push the button...\n");
// Disaple debug output so the code will respond faster
libsoc_set_debug(0);
sleep(10);
libsoc_set_debug(1);
// Cancel the callback on interrupt
libsoc_gpio_callback_interrupt_cancel(gpio_input);
//If gpio_request was successful
if (gpio_input) { // Free gpio request memory
libsoc_gpio_free(gpio_input);
}
if (gpio_output) { // Free gpio request memory
libsoc_gpio_free(gpio_output);
}
return EXIT_SUCCESS;
}
void gpio_init(void)
{
int i;
if (bbb_backend) {
/*
* Grab the four onboard LEDs (gpio1:24-27) and then
* P9-12 and P8-26 (gpio1:28-29) to support input. The
* pins on the header can be used in loopback mode for
* testing.
*/
for (i=0; i<6; i++)
gpios[i] = libsoc_gpio_request(56+i, LS_GREEDY);
}
}
