2 * Copyright (c) 2017 Samsung Electronics Co., Ltd.
4 * Licensed under the Flora License, Version 1.1 (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
8 * http://floralicense.org/license/
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.
19 #include <peripheral_io.h>
22 #include "adc-mcp3008.h"
25 static bool initialized = false;
27 void co2_sensor_close(void)
33 int co2_sensor_read(int ch_num, unsigned int *out_value)
35 unsigned int read_value = 0;
39 ret = adc_mcp3008_init();
40 retv_if(ret != 0, -1);
43 ret = adc_mcp3008_read(ch_num, &read_value);
44 retv_if(ret != 0, -1);
46 *out_value = read_value;