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led: update to use gpioled if desired, better C code wrapper

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Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
This commit is contained in:
Mihai Tudor Panu
2018-01-08 16:36:26 -08:00
parent b367a63010
commit b244fe45d1
4 changed files with 111 additions and 22 deletions
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74
src/led/led.c
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@@ -40,31 +40,87 @@ led_context led_init(int pin){
(led_context)malloc(sizeof(struct _led_context));
if (!dev)
return NULL;
return NULL;
dev->name = NULL;
dev->gpioled = NULL;
dev->led_pin = pin;
dev->gpio = mraa_gpio_init(dev->led_pin);
if (mraa_gpio_dir(dev->gpio, MRAA_GPIO_OUT) != MRAA_SUCCESS)
return NULL;
if (mraa_gpio_dir(dev->gpio, MRAA_GPIO_OUT) != MRAA_SUCCESS) {
printf("%s: Unable to set pin %d as output.\n", __FUNCTION__, pin);
free(dev);
return NULL;
}
return dev;
}
led_context led_init_str(const char* name){
// make sure MRAA is initialized
int mraa_rv;
if ((mraa_rv = mraa_init()) != MRAA_SUCCESS)
{
printf("%s: mraa_init() failed (%d).\n", __FUNCTION__, mraa_rv);
return NULL;
}
led_context dev =
(led_context)malloc(sizeof(struct _led_context));
if (!dev)
return NULL;
dev->led_pin = -1;
dev->gpio = NULL;
dev->name = name;
dev->gpioled = mraa_led_init(name);
if (!dev->gpioled) {
printf("%s: Unable to initialize gpioled device (%s).\n", __FUNCTION__, dev->name);
free(dev);
return NULL;
}
dev->max_brightness = mraa_led_read_max_brightness(dev->gpioled);
return dev;
}
void led_close(led_context dev){
if (dev->gpio) {
mraa_gpio_close(dev->gpio);
}
if (dev->gpioled) {
mraa_led_close(dev->gpioled);
}
free(dev);
}
upm_result_t led_on(led_context dev){
if (mraa_gpio_write(dev->gpio, 1) != MRAA_SUCCESS)
return UPM_ERROR_OPERATION_FAILED;
if (dev->gpio) {
// using gpio pin
if (mraa_gpio_write(dev->gpio, 1) != MRAA_SUCCESS)
return UPM_ERROR_OPERATION_FAILED;
} else {
// using gpioled device
if (mraa_led_set_brightness(dev->gpioled, dev->max_brightness) != MRAA_SUCCESS)
return UPM_ERROR_OPERATION_FAILED;
}
return UPM_SUCCESS;
}
upm_result_t led_off(led_context dev){
if (mraa_gpio_write(dev->gpio, 0) != MRAA_SUCCESS)
return UPM_ERROR_OPERATION_FAILED;
if (dev->gpio) {
// using gpio pin
if (mraa_gpio_write(dev->gpio, 0) != MRAA_SUCCESS)
return UPM_ERROR_OPERATION_FAILED;
} else {
// using gpioled device
if (mraa_led_set_brightness(dev->gpioled, 0) != MRAA_SUCCESS)
return UPM_ERROR_OPERATION_FAILED;
}
return UPM_SUCCESS;
}