src/main/drivers/adc_impl.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 #include "rcc_types.h"
  22
  23 #if defined(STM32F4) || defined(STM32F7) || defined(AT32F43x)
  24 #define ADC_TAG_MAP_COUNT 16
  25 #elif defined(STM32H7)
  26 #define ADC_TAG_MAP_COUNT 28
  27 #else
  28 #define ADC_TAG_MAP_COUNT 10
  29 #endif
  30
  31 #if defined(STM32H7)
  32 #define ADC_VALUES_ALIGNMENT(def) DMA_RAM def __attribute__ ((aligned (32)))
  33 #else
  34 #define ADC_VALUES_ALIGNMENT(def) def
  35 #endif
  36
  37 typedef enum ADCDevice {
  38     ADCINVALID = -1,
  39     ADCDEV_1   = 0,
  40 #if defined(STM32F4) || defined(STM32F7) || defined(STM32H7)
  41     ADCDEV_2,
  42     ADCDEV_3,
  43     ADCDEV_MAX = ADCDEV_3,
  44 #else
  45     ADCDEV_MAX = ADCDEV_1,
  46 #endif
  47     ADCDEV_COUNT = ADCDEV_MAX + 1
  48 } ADCDevice;
  49
  50 typedef struct adcTagMap_s {
  51     ioTag_t tag;
  52     uint32_t channel;
  53 } adcTagMap_t;
  54
  55 typedef struct adcDevice_s {
  56 #if defined(AT32F43x)
  57     adc_type* ADCx;
  58 #else
  59     ADC_TypeDef* ADCx;
  60 #endif
  61     rccPeriphTag_t rccADC;
  62     rccPeriphTag_t rccDMA;
  63 #if defined(STM32F4) || defined(STM32F7) || defined(STM32H7)
  64     DMA_Stream_TypeDef* DMAy_Streamx;
  65     uint32_t channel;
  66 #elif defined(AT32F43x)
  67     dma_channel_type* DMAy_Channelx;
  68     uint32_t dmaMuxid; // dmamux request type
  69 #else
  70     DMA_Channel_TypeDef* DMAy_Channelx;
  71 #endif
  72 #if defined(STM32F7) || defined(STM32H7)
  73     ADC_HandleTypeDef ADCHandle;
  74     DMA_HandleTypeDef DmaHandle;
  75 #endif
  76     bool enabled;
  77     int usedChannelCount;
  78 } adcDevice_t;
  79
  80 typedef struct adc_config_s {
  81     ioTag_t tag;
  82     ADCDevice adcDevice;
  83     uint32_t adcChannel;         // ADC1_INxx channel number
  84     uint8_t dmaIndex;           // index into DMA buffer in case of sparse channels
  85     bool enabled;
  86     uint8_t sampleTime;
  87 } adc_config_t;
  88
  89 extern const adcTagMap_t adcTagMap[ADC_TAG_MAP_COUNT];
  90 extern adc_config_t adcConfig[ADC_CHN_COUNT];
  91 extern volatile ADC_VALUES_ALIGNMENT(uint16_t adcValues[ADCDEV_COUNT][ADC_CHN_COUNT * ADC_AVERAGE_N_SAMPLES]);
  92
  93 void adcHardwareInit(drv_adc_config_t *init);
  94 #if defined(AT32F43x)
  95 ADCDevice adcDeviceByInstance(adc_type *instance);
  96 #else
  97 ADCDevice adcDeviceByInstance(ADC_TypeDef *instance);
  98 #endif
  99 uint32_t adcChannelByTag(ioTag_t ioTag);