src/main/drivers/adc.h

   1 /*
   2  * This file is part of Cleanflight.
   3  *
   4  * Cleanflight is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * Cleanflight is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #pragma once
  19
  20 #include "drivers/io_types.h"
  21
  22 typedef enum {
  23     ADC_BATTERY = 0,
  24     ADC_RSSI = 1,
  25     ADC_CURRENT = 2,
  26     ADC_AIRSPEED = 3,
  27     ADC_FUNCTION_COUNT
  28 } adcFunction_e;
  29
  30 typedef enum {
  31     ADC_CHN_NONE = 0,
  32     ADC_CHN_1 = 1,
  33     ADC_CHN_2,
  34     ADC_CHN_3,
  35     ADC_CHN_4,
  36     ADC_CHN_MAX = ADC_CHN_4,
  37     ADC_CHN_COUNT
  38 } adcChannel_e;
  39
  40 typedef struct drv_adc_config_s {
  41     uint8_t adcFunctionChannel[ADC_FUNCTION_COUNT];
  42 } drv_adc_config_t;
  43
  44 void adcInit(drv_adc_config_t *init);
  45 uint16_t adcGetChannel(uint8_t channel);
  46 bool adcIsFunctionAssigned(uint8_t function);
  47 int adcGetFunctionChannelAllocation(uint8_t function);
  48
  49 #if defined(USE_ADC_AVERAGING)
  50 #if !defined(ADC_AVERAGE_N_SAMPLES)
  51 #define ADC_AVERAGE_N_SAMPLES   20
  52 #endif
  53 #else
  54 #define ADC_AVERAGE_N_SAMPLES   1
  55 #endif