1 /* 2 * Copyright (c) 2022 Unionman Technology Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef __UM_ADC_H__ 17 #define __UM_ADC_H__ 18 19 20 #define ADC_1 1 21 #define ADC_2 2 22 #define ADC_CHANNEL_1 "/sys/bus/iio/devices/iio:device0/in_voltage2_raw" 23 #define ADC_CHANNEL_2 "/sys/bus/iio/devices/iio:device0/in_voltage3_raw" 24 #define TEMP_CONST 0.042 25 26 #define ADC_VALUE_ERROR (-1) 27 #define ADC_PARAM_ERROR (-2) 28 #define ADC_PATH_ERROR (-3) 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 int get_adc_data(int adc_channel, int *value); 35 36 #ifdef __cplusplus 37 } 38 #endif 39 40 #endif // endif __UM_ADC_H__ 41