src/resource/resource_infrared_motion_sensor.c

   1 /*
   2  * Copyright (c) 2018 Samsung Electronics Co., Ltd.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an AS IS BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <peripheral_io.h>
  18
  19 #include "log.h"
  20
  21 static peripheral_gpio_h g_sensor_h = NULL;
  22 static int g_pin_num = -1;
  23
  24 void resource_close_infrared_motion_sensor(void)
  25 {
  26         if (!g_sensor_h) return;
  27
  28         _I("Infrared Motion Sensor is finishing...");
  29
  30         peripheral_gpio_close(g_sensor_h);
  31
  32         g_sensor_h = NULL;
  33         g_pin_num = -1;
  34 }
  35
  36 int resource_read_infrared_motion_sensor(int pin_num, uint32_t *out_value)
  37 {
  38         int ret = PERIPHERAL_ERROR_NONE;
  39
  40         if (!g_sensor_h) {
  41                 peripheral_gpio_h temp = NULL;
  42
  43                 ret = peripheral_gpio_open(pin_num, &temp);
  44                 retv_if(ret, -1);
  45
  46                 ret = peripheral_gpio_set_direction(temp, PERIPHERAL_GPIO_DIRECTION_IN);
  47                 if (ret) {
  48                         peripheral_gpio_close(temp);
  49                         _E("peripheral_gpio_set_direction failed.");
  50                         return -1;
  51                 }
  52
  53                 g_sensor_h = temp;
  54                 g_pin_num = pin_num;
  55         }
  56
  57         if (g_pin_num != pin_num) {
  58                 _E("Invalid pin number.");
  59                 return -1;
  60         }
  61
  62         ret = peripheral_gpio_read(g_sensor_h, out_value);
  63         retv_if(ret < 0, -1);
  64
  65         return 0;
  66 }