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/*
* Copyright (c) 2018 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <peripheral_io.h>
#include "resource/resource_led.h"
#include "log.h"
typedef enum {
LED_HANDLE_ERROR_NONE = 0, /**< Successful */
LED_HANDLE_ERROR_NOT_OPEN,
LED_HANDLE_ERROR_INVALID_PIN
} led_handle_error_e;
static peripheral_gpio_h g_sensor_h = NULL;
static int g_pin_num = -1;
int _resource_validate_led(int pin_num)
{
int ret = LED_HANDLE_ERROR_NONE;
if (!g_sensor_h)
{
ret = LED_HANDLE_ERROR_NOT_OPEN;
} else if (g_pin_num != pin_num) {
ret = LED_HANDLE_ERROR_INVALID_PIN;
}
return ret;
}
int resource_open_led(int pin_num)
{
int ret = PERIPHERAL_ERROR_NONE;
peripheral_gpio_h temp = NULL;
ret = peripheral_gpio_open(pin_num, &temp);
if (ret != PERIPHERAL_ERROR_NONE) {
peripheral_gpio_close(temp);
_E("peripheral_gpio_open failed.");
return -1;
}
ret = peripheral_gpio_set_direction(temp, PERIPHERAL_GPIO_DIRECTION_OUT_INITIALLY_LOW);
if (ret != PERIPHERAL_ERROR_NONE) {
peripheral_gpio_close(temp);
_E("peripheral_gpio_set_direction failed.");
return -1;
}
g_sensor_h = temp;
g_pin_num = pin_num;
return 0;
}
void resource_close_led(void)
{
if (!g_sensor_h) return;
_I("LED is finishing...");
peripheral_gpio_close(g_sensor_h);
g_sensor_h = NULL;
g_pin_num = -1;
}
int resource_write_led(int pin_num, int write_value)
{
int ret = PERIPHERAL_ERROR_NONE;
int ret_valid = LED_HANDLE_ERROR_NONE;
ret_valid = _resource_validate_led(pin_num);
if (ret_valid != LED_HANDLE_ERROR_NONE) {
if (ret_valid == LED_HANDLE_ERROR_NOT_OPEN) {
ret = resource_open_led(pin_num);
retv_if(ret != PERIPHERAL_ERROR_NONE, -1);
} else if (ret_valid == LED_HANDLE_ERROR_INVALID_PIN) {
_E("Invalid pin number.");
return -1;
}
}
ret = peripheral_gpio_write(g_sensor_h, write_value);
retv_if(ret < 0, -1);
return 0;
}
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