src/main/drivers/adc_impl.h

   1 /*
   2  * This file is part of Cleanflight and Betaflight.
   3  *
   4  * Cleanflight and Betaflight are free software. You can redistribute
   5  * this software and/or modify this software under the terms of the
   6  * GNU General Public License as published by the Free Software
   7  * Foundation, either version 3 of the License, or (at your option)
   8  * any later version.
   9  *
  10  * Cleanflight and Betaflight are distributed in the hope that they
  11  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  12  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13  * See the GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this software.
  17  *
  18  * If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #pragma once
  22
  23 #include "drivers/adc.h"
  24 #include "drivers/dma.h"
  25 #include "drivers/io_types.h"
  26 #include "drivers/rcc_types.h"
  27
  28 #if defined(STM32F4) || defined(STM32F7)
  29 #define ADC_TAG_MAP_COUNT 16
  30 #elif defined(AT32F435)
  31 #ifdef USE_ADC_INTERNAL
  32 #define ADC_TAG_MAP_COUNT 18
  33 #else
  34 #define ADC_TAG_MAP_COUNT 16
  35 #endif
  36 #elif defined(STM32H7)
  37 #ifdef USE_ADC_INTERNAL
  38 #define ADC_TAG_MAP_COUNT 30
  39 #else
  40 #define ADC_TAG_MAP_COUNT 28
  41 #endif
  42 #elif defined(STM32G4)
  43 #ifdef USE_ADC_INTERNAL
  44 #define ADC_TAG_MAP_COUNT 49
  45 #else
  46 #define ADC_TAG_MAP_COUNT 47
  47 #endif
  48 #elif defined(APM32F4)
  49 #define ADC_TAG_MAP_COUNT 16
  50 #else
  51 #define ADC_TAG_MAP_COUNT 10
  52 #endif
  53
  54 typedef struct adcTagMap_s {
  55     ioTag_t tag;
  56     uint8_t devices;
  57     uint32_t channel;
  58 #if defined(STM32H7) || defined(STM32G4) || defined(AT32F435)
  59     uint8_t channelOrdinal;
  60 #endif
  61 } adcTagMap_t;
  62
  63 // Encoding for adcTagMap_t.devices
  64
  65 #define ADC_DEVICES_1   (1 << ADCDEV_1)
  66 #define ADC_DEVICES_2   (1 << ADCDEV_2)
  67 #define ADC_DEVICES_3   (1 << ADCDEV_3)
  68 #define ADC_DEVICES_4   (1 << ADCDEV_4)
  69 #define ADC_DEVICES_5   (1 << ADCDEV_5)
  70 #define ADC_DEVICES_12  ((1 << ADCDEV_1)|(1 << ADCDEV_2))
  71 #define ADC_DEVICES_34  ((1 << ADCDEV_3)|(1 << ADCDEV_4))
  72 #define ADC_DEVICES_123 ((1 << ADCDEV_1)|(1 << ADCDEV_2)|(1 << ADCDEV_3))
  73 #define ADC_DEVICES_345 ((1 << ADCDEV_3)|(1 << ADCDEV_4)|(1 << ADCDEV_5))
  74
  75 typedef struct adcDevice_s {
  76     ADC_TypeDef* ADCx;
  77     rccPeriphTag_t rccADC;
  78 #if !defined(USE_DMA_SPEC)
  79     dmaResource_t* dmaResource;
  80 #if defined(STM32F4) || defined(STM32F7) || defined(STM32H7) || defined(STM32G4) || defined(APM32F4)
  81     uint32_t channel;
  82 #endif
  83 #endif // !defined(USE_DMA_SPEC)
  84 #if defined(STM32F7) || defined(STM32H7) || defined(STM32G4) || defined(APM32F4)
  85     ADC_HandleTypeDef ADCHandle;
  86     DMA_HandleTypeDef DmaHandle;
  87 #endif
  88 #if defined(STM32H7) || defined(STM32G4)
  89     uint8_t irq;
  90     uint32_t channelBits;
  91 #endif
  92 } adcDevice_t;
  93
  94 #ifdef USE_ADC_INTERNAL
  95 extern int32_t adcVREFINTCAL;      // ADC value (12-bit) of band gap with Vref = VREFINTCAL_VREF
  96 extern int32_t adcTSCAL1;
  97 extern int32_t adcTSCAL2;
  98 extern int32_t adcTSSlopeK;
  99 #endif
 100
 101 extern const adcDevice_t adcHardware[];
 102 extern const adcTagMap_t adcTagMap[ADC_TAG_MAP_COUNT];
 103 extern adcOperatingConfig_t adcOperatingConfig[ADC_CHANNEL_COUNT];
 104 extern volatile uint16_t adcValues[ADC_CHANNEL_COUNT];
 105
 106 uint8_t adcChannelByTag(ioTag_t ioTag);
 107 ADCDevice adcDeviceByInstance(const ADC_TypeDef *instance);
 108 bool adcVerifyPin(ioTag_t tag, ADCDevice device);
 109
 110 // Marshall values in DMA instance/channel based order to adcChannel based order.
 111 // Required for multi DMA instance implementation
 112 void adcGetChannelValues(void);
 113
 114 //
 115 // VREFINT and TEMPSENSOR related definitions
 116 // These are shared among common adc.c and MCU dependent adc_stm32XXX.c
 117 //
 118 #ifdef STM32F7
 119 // STM32F7 HAL library V1.12.0 defines VREFINT and TEMPSENSOR in stm32f7xx_ll_adc.h,
 120 // which is not included from stm32f7xx_hal_adc.h
 121 // We manually copy required lines here.
 122 // XXX V1.14.0 may solve this problem
 123
 124 #define VREFINT_CAL_VREF                   ( 3300U)                    /* Analog voltage reference (Vref+) value with which temperature sensor has been calibrated in production (tolerance: +-10 mV) (unit: mV). */
 125 #define TEMPSENSOR_CAL1_TEMP               (( int32_t)   30)           /* Internal temperature sensor, temperature at which temperature sensor has been calibrated in production for data into TEMPSENSOR_CAL1_ADDR (tolerance: +-5 DegC) (unit: DegC). */
 126 #define TEMPSENSOR_CAL2_TEMP               (( int32_t)  110)           /* Internal temperature sensor, temperature at which temperature sensor has been calibrated in production for data into TEMPSENSOR_CAL2_ADDR (tolerance: +-5 DegC) (unit: DegC). */
 127 #define TEMPSENSOR_CAL_VREFANALOG          ( 3300U)                    /* Analog voltage reference (Vref+) voltage with which temperature sensor has been calibrated in production (+-10 mV) (unit: mV). */
 128
 129 // These addresses are incorrectly defined in stm32f7xx_ll_adc.h
 130 #if defined(STM32F745xx) || defined(STM32F746xx) || defined(STM32F765xx)
 131 // F745xx_F746xx and  F765xx_F767xx_F769xx
 132 #define VREFINT_CAL_ADDR                   ((uint16_t*) (0x1FF0F44A))
 133 #define TEMPSENSOR_CAL1_ADDR               ((uint16_t*) (0x1FF0F44C))
 134 #define TEMPSENSOR_CAL2_ADDR               ((uint16_t*) (0x1FF0F44E))
 135 #elif defined(STM32F722xx)
 136 // F72x_F73x
 137 #define VREFINT_CAL_ADDR                   ((uint16_t*) (0x1FF07A2A))
 138 #define TEMPSENSOR_CAL1_ADDR               ((uint16_t*) (0x1FF07A2C))
 139 #define TEMPSENSOR_CAL2_ADDR               ((uint16_t*) (0x1FF07A2E))
 140 #endif
 141 #endif // STM32F7
 142
 143 #ifdef STM32F4
 144 // STM32F4 stdlib does not define any of these
 145 #define VREFINT_CAL_VREF                   (3300U)
 146 #define TEMPSENSOR_CAL_VREFANALOG          (3300U)
 147 #define TEMPSENSOR_CAL1_TEMP               ((int32_t)  30)
 148 #define TEMPSENSOR_CAL2_TEMP               ((int32_t) 110)
 149 #endif
 150
 151 #ifdef AT32F435
 152 #define VREFINT_EXPECTED                   (1489U)  // The raw ADC reading at 12bit resolution expected for the 1V2 internal ref
 153 #define VREFINT_CAL_VREF                   (3300U)  // The nominal external Vref+ for the above reading
 154 #define TEMPSENSOR_CAL_VREFANALOG          (3300U)
 155 #define TEMPSENSOR_CAL1_TEMP               (25U)
 156 #define TEMPSENSOR_CAL1_V                  (1.27f)
 157 #define TEMPSENSOR_SLOPE                   (-4.13f) //  mV/C
 158 #endif