forked from forks/qmk_firmware
81cedf5fa5
* Update analog.c * Changes to remove errors in compile * Update analog.c Fix for RP2040 build errors * Revert "Merge branch 'adc-add-stm32l4xx-stm32g4xx' of https://github.com/Cipulot/qmk_firmware into adc-add-stm32l4xx-stm32g4xx" This reverts commitb11c297078, reversing changes made toed3051f941. * Update analog.c Attempt fix for formatting CI error * Update platforms/chibios/drivers/analog.c Co-authored-by: Joel Challis <git@zvecr.com> * Update platforms/chibios/drivers/analog.c Co-authored-by: Joel Challis <git@zvecr.com> * Update platforms/chibios/drivers/analog.c Co-authored-by: Joel Challis <git@zvecr.com> --------- Co-authored-by: Joel Challis <git@zvecr.com>
423 lines
20 KiB
C
423 lines
20 KiB
C
/* Copyright 2019 Drew Mills
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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 program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "analog.h"
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#include <ch.h>
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#include <hal.h>
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#if !HAL_USE_ADC
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# error "You need to set HAL_USE_ADC to TRUE in your halconf.h to use the ADC."
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#endif
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#if !RP_ADC_USE_ADC1 && !STM32_ADC_USE_ADC1 && !STM32_ADC_USE_ADC2 && !STM32_ADC_USE_ADC3 && !STM32_ADC_USE_ADC4 && !WB32_ADC_USE_ADC1
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# error "You need to set one of the 'xxx_ADC_USE_ADCx' settings to TRUE in your mcuconf.h to use the ADC."
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#endif
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#if STM32_ADC_DUAL_MODE
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# error "STM32 ADC Dual Mode is not supported at this time."
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#endif
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#if STM32_ADCV3_OVERSAMPLING
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// Apparently all ADCV3 chips that support oversampling (STM32L4xx, STM32L4xx+,
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// STM32G4xx, STM32WB[35]x) have errata like “Wrong ADC result if conversion
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// done late after calibration or previous conversion”; the workaround is to
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// perform a dummy conversion and discard its result. STM32G4xx chips also
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// have the “ADC channel 0 converted instead of the required ADC channel”
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// errata, one workaround for which is also to perform a dummy conversion.
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# define ADC_DUMMY_CONVERSIONS_AT_START 1
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#else
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# define ADC_DUMMY_CONVERSIONS_AT_START 0
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#endif
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// Otherwise assume V3
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#if defined(STM32F0XX) || defined(STM32L0XX)
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# define USE_ADCV1
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#elif defined(STM32F1XX) || defined(STM32F2XX) || defined(STM32F4XX) || defined(GD32VF103) || defined(WB32F3G71xx) || defined(WB32FQ95xx)
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# define USE_ADCV2
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#endif
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// BODGE to make v2 look like v1,3 and 4
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#if defined(USE_ADCV2) || defined(RP2040)
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# if !defined(ADC_SMPR_SMP_1P5) && defined(ADC_SAMPLE_3)
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# define ADC_SMPR_SMP_1P5 ADC_SAMPLE_3
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# define ADC_SMPR_SMP_7P5 ADC_SAMPLE_15
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# define ADC_SMPR_SMP_13P5 ADC_SAMPLE_28
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# define ADC_SMPR_SMP_28P5 ADC_SAMPLE_56
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# define ADC_SMPR_SMP_41P5 ADC_SAMPLE_84
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# define ADC_SMPR_SMP_55P5 ADC_SAMPLE_112
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# define ADC_SMPR_SMP_71P5 ADC_SAMPLE_144
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# define ADC_SMPR_SMP_239P5 ADC_SAMPLE_480
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# endif
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# if !defined(ADC_SMPR_SMP_1P5) && defined(ADC_SAMPLE_1P5)
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# define ADC_SMPR_SMP_1P5 ADC_SAMPLE_1P5
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# define ADC_SMPR_SMP_7P5 ADC_SAMPLE_7P5
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# define ADC_SMPR_SMP_13P5 ADC_SAMPLE_13P5
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# define ADC_SMPR_SMP_28P5 ADC_SAMPLE_28P5
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# define ADC_SMPR_SMP_41P5 ADC_SAMPLE_41P5
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# define ADC_SMPR_SMP_55P5 ADC_SAMPLE_55P5
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# define ADC_SMPR_SMP_71P5 ADC_SAMPLE_71P5
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# define ADC_SMPR_SMP_239P5 ADC_SAMPLE_239P5
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# endif
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// we still sample at 12bit, but scale down to the requested bit range
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# define ADC_CFGR1_RES_12BIT 12
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# define ADC_CFGR1_RES_10BIT 10
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# define ADC_CFGR1_RES_8BIT 8
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# define ADC_CFGR1_RES_6BIT 6
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#endif
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/* User configurable ADC options */
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#ifndef ADC_COUNT
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# if defined(RP2040) || defined(STM32F0XX) || defined(STM32F1XX) || defined(STM32F4XX) || defined(GD32VF103) || defined(WB32F3G71xx) || defined(WB32FQ95xx)
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# define ADC_COUNT 1
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# elif defined(STM32F3XX) || defined(STM32G4XX)
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# define ADC_COUNT 4
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# elif defined(STM32L4XX)
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# define ADC_COUNT 3
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# else
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# error "ADC_COUNT has not been set for this ARM microcontroller."
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# endif
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#endif
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#ifndef ADC_NUM_CHANNELS
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# define ADC_NUM_CHANNELS 1
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#elif ADC_NUM_CHANNELS != 1
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# error "The ARM ADC implementation currently only supports reading one channel at a time."
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#endif
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// Add dummy conversions as extra channels (this would work only on chips that
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// have multiple channel index fields instead of a channel mask, but all chips
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// that need that workaround are like that).
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#define ADC_TOTAL_CHANNELS (ADC_DUMMY_CONVERSIONS_AT_START + ADC_NUM_CHANNELS)
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#ifndef ADC_BUFFER_DEPTH
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# define ADC_BUFFER_DEPTH 1
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#endif
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// For more sampling rate options, look at hal_adc_lld.h in ChibiOS
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#if !defined(ADC_SAMPLING_RATE) && !defined(RP2040)
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# if defined(ADC_SMPR_SMP_1P5)
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# define ADC_SAMPLING_RATE ADC_SMPR_SMP_1P5
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# elif defined(ADC_SMPR_SMP_2P5) // STM32L4XX, STM32L4XXP, STM32G4XX, STM32WBXX
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# define ADC_SAMPLING_RATE ADC_SMPR_SMP_2P5
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# else
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# error "Cannot determine the default ADC_SAMPLING_RATE for this MCU."
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# endif
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#endif
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// Options are 12, 10, 8, and 6 bit.
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#ifndef ADC_RESOLUTION
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# ifdef ADC_CFGR_RES_10BITS // ADCv3, ADCv4
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# define ADC_RESOLUTION ADC_CFGR_RES_10BITS
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# else // ADCv1, ADCv5, or the bodge for ADCv2 above
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# define ADC_RESOLUTION ADC_CFGR1_RES_10BIT
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# endif
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#endif
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static ADCConfig adcCfg = {};
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static adcsample_t sampleBuffer[ADC_TOTAL_CHANNELS * ADC_BUFFER_DEPTH];
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// Initialize to max number of ADCs, set to empty object to initialize all to false.
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static bool adcInitialized[ADC_COUNT] = {};
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// TODO: add back TR handling???
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static ADCConversionGroup adcConversionGroup = {
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.circular = FALSE,
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.num_channels = (uint16_t)(ADC_TOTAL_CHANNELS),
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#if defined(USE_ADCV1)
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.cfgr1 = ADC_CFGR1_CONT | ADC_RESOLUTION,
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.smpr = ADC_SAMPLING_RATE,
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#elif defined(USE_ADCV2)
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# if !defined(STM32F1XX) && !defined(GD32VF103) && !defined(WB32F3G71xx) && !defined(WB32FQ95xx)
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.cr2 = ADC_CR2_SWSTART, // F103 seem very unhappy with, F401 seems very unhappy without...
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# endif
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.smpr2 = ADC_SMPR2_SMP_AN0(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN1(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN2(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN3(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN4(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN5(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN6(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN7(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN8(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN9(ADC_SAMPLING_RATE),
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.smpr1 = ADC_SMPR1_SMP_AN10(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN11(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN12(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN13(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN14(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN15(ADC_SAMPLING_RATE),
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#elif defined(RP2040)
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// RP2040 does not have any extra config here
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#else
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.cfgr = ADC_CFGR_CONT | ADC_RESOLUTION,
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.smpr = {ADC_SMPR1_SMP_AN0(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN1(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN2(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN3(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN4(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN5(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN6(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN7(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN8(ADC_SAMPLING_RATE) | ADC_SMPR1_SMP_AN9(ADC_SAMPLING_RATE), ADC_SMPR2_SMP_AN10(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN11(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN12(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN13(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN14(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN15(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN16(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN17(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN18(ADC_SAMPLING_RATE)},
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#endif
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};
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// clang-format off
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__attribute__((weak)) adc_mux pinToMux(pin_t pin) {
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switch (pin) {
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#if defined(STM32F0XX)
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case A0: return TO_MUX( 0, 0 );
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case A1: return TO_MUX( 1, 0 );
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case A2: return TO_MUX( 2, 0 );
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case A3: return TO_MUX( 3, 0 );
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case A4: return TO_MUX( 4, 0 );
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case A5: return TO_MUX( 5, 0 );
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case A6: return TO_MUX( 6, 0 );
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case A7: return TO_MUX( 7, 0 );
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case B0: return TO_MUX( 8, 0 );
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case B1: return TO_MUX( 9, 0 );
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case C0: return TO_MUX( 10, 0 );
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case C1: return TO_MUX( 11, 0 );
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case C2: return TO_MUX( 12, 0 );
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case C3: return TO_MUX( 13, 0 );
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case C4: return TO_MUX( 14, 0 );
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case C5: return TO_MUX( 15, 0 );
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#elif defined(STM32F3XX)
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case A0: return TO_MUX( ADC_CHANNEL_IN1, 0 );
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case A1: return TO_MUX( ADC_CHANNEL_IN2, 0 );
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case A2: return TO_MUX( ADC_CHANNEL_IN3, 0 );
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case A3: return TO_MUX( ADC_CHANNEL_IN4, 0 );
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case A4: return TO_MUX( ADC_CHANNEL_IN1, 1 );
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case A5: return TO_MUX( ADC_CHANNEL_IN2, 1 );
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case A6: return TO_MUX( ADC_CHANNEL_IN3, 1 );
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case A7: return TO_MUX( ADC_CHANNEL_IN4, 1 );
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case B0: return TO_MUX( ADC_CHANNEL_IN12, 2 );
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case B1: return TO_MUX( ADC_CHANNEL_IN1, 2 );
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case B2: return TO_MUX( ADC_CHANNEL_IN12, 1 );
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case B12: return TO_MUX( ADC_CHANNEL_IN3, 3 );
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case B13: return TO_MUX( ADC_CHANNEL_IN5, 2 );
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case B14: return TO_MUX( ADC_CHANNEL_IN4, 3 );
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case B15: return TO_MUX( ADC_CHANNEL_IN5, 3 );
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case C0: return TO_MUX( ADC_CHANNEL_IN6, 0 ); // Can also be ADC2
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case C1: return TO_MUX( ADC_CHANNEL_IN7, 0 ); // Can also be ADC2
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case C2: return TO_MUX( ADC_CHANNEL_IN8, 0 ); // Can also be ADC2
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case C3: return TO_MUX( ADC_CHANNEL_IN9, 0 ); // Can also be ADC2
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case C4: return TO_MUX( ADC_CHANNEL_IN5, 1 );
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case C5: return TO_MUX( ADC_CHANNEL_IN11, 1 );
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case D8: return TO_MUX( ADC_CHANNEL_IN12, 3 );
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case D9: return TO_MUX( ADC_CHANNEL_IN13, 3 );
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case D10: return TO_MUX( ADC_CHANNEL_IN7, 2 ); // Can also be ADC4
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case D11: return TO_MUX( ADC_CHANNEL_IN8, 2 ); // Can also be ADC4
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case D12: return TO_MUX( ADC_CHANNEL_IN9, 2 ); // Can also be ADC4
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case D13: return TO_MUX( ADC_CHANNEL_IN10, 2 ); // Can also be ADC4
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case D14: return TO_MUX( ADC_CHANNEL_IN11, 2 ); // Can also be ADC4
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case E7: return TO_MUX( ADC_CHANNEL_IN13, 2 );
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case E8: return TO_MUX( ADC_CHANNEL_IN6, 2 ); // Can also be ADC4
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case E9: return TO_MUX( ADC_CHANNEL_IN2, 2 );
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case E10: return TO_MUX( ADC_CHANNEL_IN14, 2 );
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case E11: return TO_MUX( ADC_CHANNEL_IN15, 2 );
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case E12: return TO_MUX( ADC_CHANNEL_IN16, 2 );
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case E13: return TO_MUX( ADC_CHANNEL_IN3, 2 );
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case E14: return TO_MUX( ADC_CHANNEL_IN1, 3 );
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case E15: return TO_MUX( ADC_CHANNEL_IN2, 3 );
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case F2: return TO_MUX( ADC_CHANNEL_IN10, 0 ); // Can also be ADC2
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case F4: return TO_MUX( ADC_CHANNEL_IN5, 0 );
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#elif defined(STM32F4XX)
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case A0: return TO_MUX( ADC_CHANNEL_IN0, 0 );
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case A1: return TO_MUX( ADC_CHANNEL_IN1, 0 );
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case A2: return TO_MUX( ADC_CHANNEL_IN2, 0 );
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case A3: return TO_MUX( ADC_CHANNEL_IN3, 0 );
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case A4: return TO_MUX( ADC_CHANNEL_IN4, 0 );
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case A5: return TO_MUX( ADC_CHANNEL_IN5, 0 );
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case A6: return TO_MUX( ADC_CHANNEL_IN6, 0 );
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case A7: return TO_MUX( ADC_CHANNEL_IN7, 0 );
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case B0: return TO_MUX( ADC_CHANNEL_IN8, 0 );
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case B1: return TO_MUX( ADC_CHANNEL_IN9, 0 );
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case C0: return TO_MUX( ADC_CHANNEL_IN10, 0 );
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case C1: return TO_MUX( ADC_CHANNEL_IN11, 0 );
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case C2: return TO_MUX( ADC_CHANNEL_IN12, 0 );
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case C3: return TO_MUX( ADC_CHANNEL_IN13, 0 );
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case C4: return TO_MUX( ADC_CHANNEL_IN14, 0 );
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case C5: return TO_MUX( ADC_CHANNEL_IN15, 0 );
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# if STM32_ADC_USE_ADC3
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case F3: return TO_MUX( ADC_CHANNEL_IN9, 2 );
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case F4: return TO_MUX( ADC_CHANNEL_IN14, 2 );
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case F5: return TO_MUX( ADC_CHANNEL_IN15, 2 );
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case F6: return TO_MUX( ADC_CHANNEL_IN4, 2 );
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case F7: return TO_MUX( ADC_CHANNEL_IN5, 2 );
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case F8: return TO_MUX( ADC_CHANNEL_IN6, 2 );
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case F9: return TO_MUX( ADC_CHANNEL_IN7, 2 );
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case F10: return TO_MUX( ADC_CHANNEL_IN8, 2 );
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# endif
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#elif defined(STM32F1XX) || defined(GD32VF103) || defined(WB32F3G71xx) || defined(WB32FQ95xx)
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case A0: return TO_MUX( ADC_CHANNEL_IN0, 0 );
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case A1: return TO_MUX( ADC_CHANNEL_IN1, 0 );
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case A2: return TO_MUX( ADC_CHANNEL_IN2, 0 );
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case A3: return TO_MUX( ADC_CHANNEL_IN3, 0 );
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case A4: return TO_MUX( ADC_CHANNEL_IN4, 0 );
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case A5: return TO_MUX( ADC_CHANNEL_IN5, 0 );
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case A6: return TO_MUX( ADC_CHANNEL_IN6, 0 );
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case A7: return TO_MUX( ADC_CHANNEL_IN7, 0 );
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case B0: return TO_MUX( ADC_CHANNEL_IN8, 0 );
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case B1: return TO_MUX( ADC_CHANNEL_IN9, 0 );
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case C0: return TO_MUX( ADC_CHANNEL_IN10, 0 );
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case C1: return TO_MUX( ADC_CHANNEL_IN11, 0 );
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case C2: return TO_MUX( ADC_CHANNEL_IN12, 0 );
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case C3: return TO_MUX( ADC_CHANNEL_IN13, 0 );
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case C4: return TO_MUX( ADC_CHANNEL_IN14, 0 );
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case C5: return TO_MUX( ADC_CHANNEL_IN15, 0 );
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// STM32F103x[C-G] in 144-pin packages also have analog inputs on F6...F10, but they are on ADC3, and the
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// ChibiOS ADC driver for STM32F1xx currently supports only ADC1, therefore these pins are not usable.
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#elif defined(STM32L4XX)
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case A0: return TO_MUX( ADC_CHANNEL_IN5, 0 ); // Can also be ADC2 in some cases
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case A1: return TO_MUX( ADC_CHANNEL_IN6, 0 ); // Can also be ADC2 in some cases
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case A2: return TO_MUX( ADC_CHANNEL_IN7, 0 ); // Can also be ADC2
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case A3: return TO_MUX( ADC_CHANNEL_IN8, 0 ); // Can also be ADC2
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case A4: return TO_MUX( ADC_CHANNEL_IN9, 0 ); // Can also be ADC2
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case A5: return TO_MUX( ADC_CHANNEL_IN10, 0 ); // Can also be ADC2
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case A6: return TO_MUX( ADC_CHANNEL_IN11, 0 ); // Can also be ADC2
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case A7: return TO_MUX( ADC_CHANNEL_IN12, 0 ); // Can also be ADC2
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case B0: return TO_MUX( ADC_CHANNEL_IN15, 0 ); // Can also be ADC2
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case B1: return TO_MUX( ADC_CHANNEL_IN16, 0 ); // Can also be ADC2
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case C0: return TO_MUX( ADC_CHANNEL_IN1, 0 ); // Can also be ADC2 or ADC3
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case C1: return TO_MUX( ADC_CHANNEL_IN2, 0 ); // Can also be ADC2 or ADC3
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case C2: return TO_MUX( ADC_CHANNEL_IN3, 0 ); // Can also be ADC2 or ADC3
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case C3: return TO_MUX( ADC_CHANNEL_IN4, 0 ); // Can also be ADC2 or ADC3
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case C4: return TO_MUX( ADC_CHANNEL_IN13, 0 ); // Can also be ADC2
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case C5: return TO_MUX( ADC_CHANNEL_IN14, 0 ); // Can also be ADC2
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# if STM32_HAS_GPIOF && STM32_ADC_USE_ADC3
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case F3: return TO_MUX( ADC_CHANNEL_IN6, 2 );
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case F4: return TO_MUX( ADC_CHANNEL_IN7, 2 );
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case F5: return TO_MUX( ADC_CHANNEL_IN8, 2 );
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case F6: return TO_MUX( ADC_CHANNEL_IN9, 2 );
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case F7: return TO_MUX( ADC_CHANNEL_IN10, 2 );
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case F8: return TO_MUX( ADC_CHANNEL_IN11, 2 );
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case F9: return TO_MUX( ADC_CHANNEL_IN12, 2 );
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case F10: return TO_MUX( ADC_CHANNEL_IN13, 2 );
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# endif
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#elif defined(STM32G4XX)
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case A0: return TO_MUX( ADC_CHANNEL_IN1, 0 ); // Can also be ADC2
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case A1: return TO_MUX( ADC_CHANNEL_IN2, 0 ); // Can also be ADC2
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case A2: return TO_MUX( ADC_CHANNEL_IN3, 0 );
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case A3: return TO_MUX( ADC_CHANNEL_IN4, 0 );
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case A4: return TO_MUX( ADC_CHANNEL_IN17, 1 );
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case A5: return TO_MUX( ADC_CHANNEL_IN13, 1 );
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case A6: return TO_MUX( ADC_CHANNEL_IN3, 1 );
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case A7: return TO_MUX( ADC_CHANNEL_IN4, 1 );
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case B0: return TO_MUX( ADC_CHANNEL_IN15, 0 ); // Can also be ADC3
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case B1: return TO_MUX( ADC_CHANNEL_IN12, 0 ); // Can also be ADC3
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case B2: return TO_MUX( ADC_CHANNEL_IN12, 1 );
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case B11: return TO_MUX( ADC_CHANNEL_IN14, 0 ); // Can also be ADC2
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case B12: return TO_MUX( ADC_CHANNEL_IN11, 0 ); // Can also be ADC4
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case B13: return TO_MUX( ADC_CHANNEL_IN5, 2 );
|
|
case B14: return TO_MUX( ADC_CHANNEL_IN5, 0 ); // Can also be ADC4
|
|
case B15: return TO_MUX( ADC_CHANNEL_IN15, 1 ); // Can also be ADC4
|
|
case C0: return TO_MUX( ADC_CHANNEL_IN6, 0 ); // Can also be ADC2
|
|
case C1: return TO_MUX( ADC_CHANNEL_IN7, 0 ); // Can also be ADC2
|
|
case C2: return TO_MUX( ADC_CHANNEL_IN8, 0 ); // Can also be ADC2
|
|
case C3: return TO_MUX( ADC_CHANNEL_IN9, 0 ); // Can also be ADC2
|
|
case C4: return TO_MUX( ADC_CHANNEL_IN5, 1 );
|
|
case C5: return TO_MUX( ADC_CHANNEL_IN11, 1 );
|
|
case D8: return TO_MUX( ADC_CHANNEL_IN12, 3 );
|
|
case D9: return TO_MUX( ADC_CHANNEL_IN13, 3 );
|
|
case D10: return TO_MUX( ADC_CHANNEL_IN7, 2 ); // Can also be ADC4
|
|
case D11: return TO_MUX( ADC_CHANNEL_IN8, 2 ); // Can also be ADC4
|
|
case D12: return TO_MUX( ADC_CHANNEL_IN9, 2 ); // Can also be ADC4
|
|
case D13: return TO_MUX( ADC_CHANNEL_IN10, 2 ); // Can also be ADC4
|
|
case D14: return TO_MUX( ADC_CHANNEL_IN11, 2 ); // Can also be ADC4
|
|
case E5: return TO_MUX( ADC_CHANNEL_IN2, 3 );
|
|
case E7: return TO_MUX( ADC_CHANNEL_IN4, 2 );
|
|
case E8: return TO_MUX( ADC_CHANNEL_IN6, 2 ); // Can also be ADC4
|
|
case E9: return TO_MUX( ADC_CHANNEL_IN2, 2 );
|
|
case E10: return TO_MUX( ADC_CHANNEL_IN14, 2 ); // Can also be ADC4
|
|
case E11: return TO_MUX( ADC_CHANNEL_IN15, 2 ); // Can also be ADC4
|
|
case E12: return TO_MUX( ADC_CHANNEL_IN16, 2 ); // Can also be ADC4
|
|
case E13: return TO_MUX( ADC_CHANNEL_IN3, 2 );
|
|
case E14: return TO_MUX( ADC_CHANNEL_IN1, 3 );
|
|
case F0: return TO_MUX( ADC_CHANNEL_IN10, 0 );
|
|
case F1: return TO_MUX( ADC_CHANNEL_IN10, 1 );
|
|
#elif defined(RP2040)
|
|
case 26U: return TO_MUX(0, 0);
|
|
case 27U: return TO_MUX(1, 0);
|
|
case 28U: return TO_MUX(2, 0);
|
|
case 29U: return TO_MUX(3, 0);
|
|
#endif
|
|
}
|
|
|
|
// return an adc that would never be used so intToADCDriver will bail out
|
|
return TO_MUX(0, 0xFF);
|
|
}
|
|
// clang-format on
|
|
|
|
static inline ADCDriver* intToADCDriver(uint8_t adcInt) {
|
|
switch (adcInt) {
|
|
#if RP_ADC_USE_ADC1 || STM32_ADC_USE_ADC1 || WB32_ADC_USE_ADC1
|
|
case 0:
|
|
return &ADCD1;
|
|
#endif
|
|
#if STM32_ADC_USE_ADC2
|
|
case 1:
|
|
return &ADCD2;
|
|
#endif
|
|
#if STM32_ADC_USE_ADC3
|
|
case 2:
|
|
return &ADCD3;
|
|
#endif
|
|
#if STM32_ADC_USE_ADC4
|
|
case 3:
|
|
return &ADCD4;
|
|
#endif
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static inline void manageAdcInitializationDriver(uint8_t adc, ADCDriver* adcDriver) {
|
|
if (!adcInitialized[adc]) {
|
|
adcStart(adcDriver, &adcCfg);
|
|
adcInitialized[adc] = true;
|
|
}
|
|
}
|
|
|
|
int16_t analogReadPin(pin_t pin) {
|
|
palSetLineMode(pin, PAL_MODE_INPUT_ANALOG);
|
|
|
|
return adc_read(pinToMux(pin));
|
|
}
|
|
|
|
int16_t analogReadPinAdc(pin_t pin, uint8_t adc) {
|
|
palSetLineMode(pin, PAL_MODE_INPUT_ANALOG);
|
|
|
|
adc_mux target = pinToMux(pin);
|
|
target.adc = adc;
|
|
return adc_read(target);
|
|
}
|
|
|
|
int16_t adc_read(adc_mux mux) {
|
|
#if defined(USE_ADCV1)
|
|
// TODO: fix previous assumption of only 1 input...
|
|
adcConversionGroup.chselr = 1 << mux.input; /*no macro to convert N to ADC_CHSELR_CHSEL1*/
|
|
#elif defined(USE_ADCV2)
|
|
adcConversionGroup.sqr3 = ADC_SQR3_SQ1_N(mux.input);
|
|
#elif defined(RP2040)
|
|
adcConversionGroup.channel_mask = 1 << mux.input;
|
|
#else
|
|
adcConversionGroup.sqr[0] = ADC_SQR1_SQ1_N(mux.input)
|
|
# if ADC_DUMMY_CONVERSIONS_AT_START >= 1
|
|
| ADC_SQR1_SQ2_N(mux.input)
|
|
# endif
|
|
;
|
|
#endif
|
|
|
|
ADCDriver* targetDriver = intToADCDriver(mux.adc);
|
|
if (!targetDriver) {
|
|
return 0;
|
|
}
|
|
|
|
manageAdcInitializationDriver(mux.adc, targetDriver);
|
|
if (adcConvert(targetDriver, &adcConversionGroup, &sampleBuffer[0], ADC_BUFFER_DEPTH) != MSG_OK) {
|
|
return 0;
|
|
}
|
|
|
|
#if defined(USE_ADCV2) || defined(RP2040)
|
|
// fake 12-bit -> N-bit scale
|
|
return (sampleBuffer[ADC_DUMMY_CONVERSIONS_AT_START]) >> (12 - ADC_RESOLUTION);
|
|
#else
|
|
// already handled as part of adcConvert
|
|
return sampleBuffer[ADC_DUMMY_CONVERSIONS_AT_START];
|
|
#endif
|
|
}
|