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https://github.com/betaflight/betaflight.git
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118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
/*
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* This file is part of Cleanflight and Betaflight.
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*
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* Cleanflight and Betaflight are free software. You can redistribute
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* this software and/or modify this software under the terms of the
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* GNU General Public License as published by the Free Software
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* Foundation, either version 3 of the License, or (at your option)
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* any later version.
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*
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* Cleanflight and Betaflight are distributed in the hope that they
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software.
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*
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdbool.h>
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#include "drivers/io_types.h"
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#include "drivers/time.h"
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#ifndef ADC_INSTANCE
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#define ADC_INSTANCE ADC1
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#endif
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#if defined(STM32F4) || defined(STM32F7)
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#ifndef ADC1_DMA_STREAM
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#define ADC1_DMA_STREAM DMA2_Stream4 // ST0 or ST4
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#endif
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#ifndef ADC2_DMA_STREAM
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#define ADC2_DMA_STREAM DMA2_Stream3 // ST2 or ST3
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#endif
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#ifndef ADC3_DMA_STREAM
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#define ADC3_DMA_STREAM DMA2_Stream0 // ST0 or ST1
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#endif
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#endif
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typedef enum ADCDevice {
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ADCINVALID = -1,
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ADCDEV_1 = 0,
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#if defined(ADC2)
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ADCDEV_2,
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#endif
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#if defined(ADC3)
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ADCDEV_3,
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#endif
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#if defined(ADC4)
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ADCDEV_4,
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#endif
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#if defined(ADC5)
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ADCDEV_5,
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#endif
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ADCDEV_COUNT
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} ADCDevice;
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#define ADC_CFG_TO_DEV(x) ((x) - 1)
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#define ADC_DEV_TO_CFG(x) ((x) + 1)
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typedef enum {
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ADC_BATTERY = 0,
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ADC_CURRENT = 1,
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ADC_EXTERNAL1 = 2,
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ADC_RSSI = 3,
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#if defined(STM32H7) || defined(STM32G4)
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// On H7 and G4, internal sensors are treated in the similar fashion as regular ADC inputs
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ADC_CHANNEL_INTERNAL_FIRST_ID = 4,
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ADC_TEMPSENSOR = 4,
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ADC_VREFINT = 5,
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ADC_VBAT4 = 6,
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#elif defined(AT32F435)
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ADC_CHANNEL_INTERNAL_FIRST_ID = 4,
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ADC_TEMPSENSOR = 4,
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ADC_VREFINT = 5,
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// ADC_VBAT4 = 6,
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#endif
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ADC_CHANNEL_COUNT
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} AdcChannel;
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typedef struct adcOperatingConfig_s {
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ioTag_t tag;
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#if defined(STM32H7) || defined(STM32G4) || defined(AT32F435)
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ADCDevice adcDevice; // ADCDEV_x for this input
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uint32_t adcChannel; // Channel number for this input. Note that H7 and G4 HAL requires this to be 32-bit encoded number.
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#else
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uint8_t adcChannel; // ADCy_INxx channel number for this input (XXX May be consolidated with uint32_t case)
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#endif
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uint8_t dmaIndex; // index into DMA buffer in case of sparse channels
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bool enabled;
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uint8_t sampleTime;
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} adcOperatingConfig_t;
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struct adcConfig_s;
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void adcInit(const struct adcConfig_s *config);
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uint16_t adcGetChannel(uint8_t channel);
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#ifdef USE_ADC_INTERNAL
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bool adcInternalIsBusy(void);
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void adcInternalStartConversion(void);
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uint16_t adcInternalReadVrefint(void);
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uint16_t adcInternalReadTempsensor(void);
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uint16_t adcInternalCompensateVref(uint16_t vrefAdcValue);
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int16_t adcInternalComputeTemperature(uint16_t tempAdcValue, uint16_t vrefValue);
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#endif
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#if !defined(SIMULATOR_BUILD)
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ADCDevice adcDeviceByInstance(const ADC_TypeDef *instance);
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#endif
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