Add ADC support for STM32F3 and STM32F0 devices (#7681)
* Add ADC support for STM32F3 and STM32F0 devices * Add section about configration options available to the ARM ADC implementation * Fix STM32 typomake_cli_parsing
Drew Mills
5 years ago
committed by
GitHub
parent
979ac0d8da
commit
5ac6fe1888
@ -0,0 +1,220 @@ |
||||
/* Copyright 2019 Drew Mills
|
||||
* |
||||
* This program is free software: you can redistribute it and/or modify |
||||
* it under the terms of the GNU General Public License as published by |
||||
* the Free Software Foundation, either version 2 of the License, or |
||||
* (at your option) any later version. |
||||
* |
||||
* This program is distributed in the hope that it will be useful, |
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
* GNU General Public License for more details. |
||||
* |
||||
* You should have received a copy of the GNU General Public License |
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#include "analog.h" |
||||
#include "quantum.h" |
||||
|
||||
|
||||
/* User configurable ADC options */ |
||||
#ifndef ADC_CIRCULAR_BUFFER |
||||
#define ADC_CIRCULAR_BUFFER FALSE |
||||
#endif |
||||
|
||||
#ifndef ADC_NUM_CHANNELS |
||||
#define ADC_NUM_CHANNELS 1 |
||||
#elif ADC_NUM_CHANNELS != 1 |
||||
#error "The ARM ADC implementation currently only supports reading one channel at a time." |
||||
#endif |
||||
|
||||
#ifndef ADC_BUFFER_DEPTH |
||||
#define ADC_BUFFER_DEPTH 2 |
||||
#endif |
||||
|
||||
// For more sampling rate options, look at hal_adc_lld.h in ChibiOS
|
||||
#ifndef ADC_SAMPLING_RATE |
||||
#define ADC_SAMPLING_RATE ADC_SMPR_SMP_1P5 |
||||
#endif |
||||
|
||||
// Options are 12, 10, 8, and 6 bit.
|
||||
#ifndef ADC_RESOLUTION |
||||
#define ADC_RESOLUTION ADC_CFGR1_RES_12BIT |
||||
#endif |
||||
|
||||
|
||||
|
||||
static ADCConfig adcCfg = {}; |
||||
static adcsample_t sampleBuffer[ADC_NUM_CHANNELS * ADC_BUFFER_DEPTH]; |
||||
|
||||
// Initialize to max number of ADCs, set to empty object to initialize all to false.
|
||||
#if defined(STM32F0XX) |
||||
static bool adcInitialized[1] = {}; |
||||
#elif defined(STM32F3XX) |
||||
static bool adcInitialized[4] = {}; |
||||
#else |
||||
#error "adcInitialized has not been implemented for this ARM microcontroller." |
||||
#endif |
||||
|
||||
|
||||
|
||||
static ADCConversionGroup adcConversionGroup = { |
||||
ADC_CIRCULAR_BUFFER, |
||||
(uint16_t)(ADC_NUM_CHANNELS), |
||||
NULL, // No end callback
|
||||
NULL, // No error callback
|
||||
#if defined(STM32F0XX) |
||||
ADC_CFGR1_CONT | ADC_RESOLUTION, |
||||
ADC_TR(0, 0). |
||||
ADC_SAMPLING_RATE, |
||||
NULL, // Doesn't specify a default channel
|
||||
#elif defined(STM32F3XX) |
||||
ADC_CFGR_CONT | ADC_RESOLUTION, |
||||
ADC_TR(0, 4095), |
||||
{ |
||||
ADC_SAMPLING_RATE, |
||||
ADC_SAMPLING_RATE, |
||||
}, |
||||
{ |
||||
0, // Doesn't specify a default channel
|
||||
0, |
||||
0, |
||||
0, |
||||
}, |
||||
#endif |
||||
}; |
||||
|
||||
|
||||
|
||||
static inline ADCDriver* intToADCDriver(uint8_t adcInt) { |
||||
|
||||
ADCDriver* target; |
||||
|
||||
switch (adcInt) { |
||||
// clang-format off
|
||||
#if STM32_ADC_USE_ADC1 |
||||
case 0: target = &ADCD1; break; |
||||
#endif |
||||
#if STM32_ADC_USE_ADC2 |
||||
case 1: target = &ADCD2; break; |
||||
#endif |
||||
#if STM32_ADC_USE_ADC3 |
||||
case 2: target = &ADCD3; break; |
||||
#endif |
||||
#if STM32_ADC_USE_ADC4 |
||||
case 3: target = &ADCD4; break; |
||||
#endif |
||||
default: target = NULL; break; |
||||
// clang-format on
|
||||
} |
||||
|
||||
return target; |
||||
} |
||||
|
||||
static inline void manageAdcInitializationDriver(uint8_t adc, ADCDriver* adcDriver) { |
||||
if (!adcInitialized[adc]) { |
||||
adcStart(adcDriver, &adcCfg); |
||||
adcInitialized[adc] = true; |
||||
} |
||||
} |
||||
|
||||
static inline void manageAdcInitialization(uint8_t adc) { |
||||
manageAdcInitializationDriver(adc, intToADCDriver(adc)); |
||||
} |
||||
|
||||
pin_and_adc pinToMux(pin_t pin) { |
||||
switch(pin) { |
||||
// clang-format off
|
||||
#if defined(STM32F0XX) |
||||
case A0: return (pin_and_adc){ ADC_CHANNEL_IN0, 0 }; |
||||
case A1: return (pin_and_adc){ ADC_CHANNEL_IN1, 0 }; |
||||
case A2: return (pin_and_adc){ ADC_CHANNEL_IN2, 0 }; |
||||
case A3: return (pin_and_adc){ ADC_CHANNEL_IN3, 0 }; |
||||
case A4: return (pin_and_adc){ ADC_CHANNEL_IN4, 0 }; |
||||
case A5: return (pin_and_adc){ ADC_CHANNEL_IN5, 0 }; |
||||
case A6: return (pin_and_adc){ ADC_CHANNEL_IN6, 0 }; |
||||
case A7: return (pin_and_adc){ ADC_CHANNEL_IN7, 0 }; |
||||
case B0: return (pin_and_adc){ ADC_CHANNEL_IN8, 0 }; |
||||
case B1: return (pin_and_adc){ ADC_CHANNEL_IN9, 0 }; |
||||
case C0: return (pin_and_adc){ ADC_CHANNEL_IN10, 0 }; |
||||
case C1: return (pin_and_adc){ ADC_CHANNEL_IN11, 0 }; |
||||
case C2: return (pin_and_adc){ ADC_CHANNEL_IN12, 0 }; |
||||
case C3: return (pin_and_adc){ ADC_CHANNEL_IN13, 0 }; |
||||
case C4: return (pin_and_adc){ ADC_CHANNEL_IN14, 0 }; |
||||
case C5: return (pin_and_adc){ ADC_CHANNEL_IN15, 0 }; |
||||
#elif defined(STM32F3XX) |
||||
case A0: return (pin_and_adc){ ADC_CHANNEL_IN1, 0 }; |
||||
case A1: return (pin_and_adc){ ADC_CHANNEL_IN2, 0 }; |
||||
case A2: return (pin_and_adc){ ADC_CHANNEL_IN3, 0 }; |
||||
case A3: return (pin_and_adc){ ADC_CHANNEL_IN4, 0 }; |
||||
case A4: return (pin_and_adc){ ADC_CHANNEL_IN1, 1 }; |
||||
case A5: return (pin_and_adc){ ADC_CHANNEL_IN2, 1 }; |
||||
case A6: return (pin_and_adc){ ADC_CHANNEL_IN3, 1 }; |
||||
case A7: return (pin_and_adc){ ADC_CHANNEL_IN4, 1 }; |
||||
case B0: return (pin_and_adc){ ADC_CHANNEL_IN12, 2 }; |
||||
case B1: return (pin_and_adc){ ADC_CHANNEL_IN1, 2 }; |
||||
case B2: return (pin_and_adc){ ADC_CHANNEL_IN12, 1 }; |
||||
case B12: return (pin_and_adc){ ADC_CHANNEL_IN2, 3 }; |
||||
case B13: return (pin_and_adc){ ADC_CHANNEL_IN3, 3 }; |
||||
case B14: return (pin_and_adc){ ADC_CHANNEL_IN4, 3 }; |
||||
case B15: return (pin_and_adc){ ADC_CHANNEL_IN5, 3 }; |
||||
case C0: return (pin_and_adc){ ADC_CHANNEL_IN6, 0 }; // Can also be ADC2
|
||||
case C1: return (pin_and_adc){ ADC_CHANNEL_IN7, 0 }; // Can also be ADC2
|
||||
case C2: return (pin_and_adc){ ADC_CHANNEL_IN8, 0 }; // Can also be ADC2
|
||||
case C3: return (pin_and_adc){ ADC_CHANNEL_IN9, 0 }; // Can also be ADC2
|
||||
case C4: return (pin_and_adc){ ADC_CHANNEL_IN5, 1 }; |
||||
case C5: return (pin_and_adc){ ADC_CHANNEL_IN11, 1 }; |
||||
case D8: return (pin_and_adc){ ADC_CHANNEL_IN12, 3 }; |
||||
case D9: return (pin_and_adc){ ADC_CHANNEL_IN13, 3 }; |
||||
case D10: return (pin_and_adc){ ADC_CHANNEL_IN7, 2 }; // Can also be ADC4
|
||||
case D11: return (pin_and_adc){ ADC_CHANNEL_IN8, 2 }; // Can also be ADC4
|
||||
case D12: return (pin_and_adc){ ADC_CHANNEL_IN9, 2 }; // Can also be ADC4
|
||||
case D13: return (pin_and_adc){ ADC_CHANNEL_IN10, 2 }; // Can also be ADC4
|
||||
case D14: return (pin_and_adc){ ADC_CHANNEL_IN11, 2 }; // Can also be ADC4
|
||||
case E7: return (pin_and_adc){ ADC_CHANNEL_IN13, 2 }; |
||||
case E8: return (pin_and_adc){ ADC_CHANNEL_IN6, 2 }; // Can also be ADC4
|
||||
case E9: return (pin_and_adc){ ADC_CHANNEL_IN2, 2 }; |
||||
case E10: return (pin_and_adc){ ADC_CHANNEL_IN14, 2 }; |
||||
case E11: return (pin_and_adc){ ADC_CHANNEL_IN15, 2 }; |
||||
case E12: return (pin_and_adc){ ADC_CHANNEL_IN16, 2 }; |
||||
case E13: return (pin_and_adc){ ADC_CHANNEL_IN3, 2 }; |
||||
case E14: return (pin_and_adc){ ADC_CHANNEL_IN1, 3 }; |
||||
case E15: return (pin_and_adc){ ADC_CHANNEL_IN2, 3 }; |
||||
case F2: return (pin_and_adc){ ADC_CHANNEL_IN10, 0 }; // Can also be ADC2
|
||||
case F4: return (pin_and_adc){ ADC_CHANNEL_IN5, 0 }; |
||||
#else |
||||
#error "An ADC pin-to-mux configuration has not been specified for this microcontroller." |
||||
#endif |
||||
default: return (pin_and_adc){ 0, 0 }; |
||||
// clang-format on
|
||||
} |
||||
} |
||||
|
||||
adcsample_t analogReadPin(pin_t pin) { |
||||
return adc_read(pinToMux(pin)); |
||||
} |
||||
|
||||
adcsample_t analogReadPinAdc(pin_t pin, uint8_t adc) { |
||||
pin_and_adc target = pinToMux(pin); |
||||
target.adc = adc; |
||||
return adc_read(target); |
||||
} |
||||
|
||||
adcsample_t adc_read(pin_and_adc mux) { |
||||
#if defined(STM32F0XX) |
||||
adcConversionGroup.sqr = ADC_CHSELR_CHSEL1; |
||||
#elif defined(STM32F3XX) |
||||
adcConversionGroup.sqr[0] = ADC_SQR1_SQ1_N(mux.pin); |
||||
#else |
||||
#error "adc_read has not been updated to support this ARM microcontroller." |
||||
#endif |
||||
|
||||
ADCDriver* targetDriver = intToADCDriver(mux.adc); |
||||
manageAdcInitializationDriver(mux.adc, targetDriver); |
||||
|
||||
adcConvert(targetDriver, &adcConversionGroup, &sampleBuffer[0], ADC_BUFFER_DEPTH); |
||||
adcsample_t* result = sampleBuffer; |
||||
|
||||
return *result; |
||||
} |
||||
@ -0,0 +1,60 @@ |
||||
/* Copyright 2019 Drew Mills
|
||||
* |
||||
* This program is free software: you can redistribute it and/or modify |
||||
* it under the terms of the GNU General Public License as published by |
||||
* the Free Software Foundation, either version 2 of the License, or |
||||
* (at your option) any later version. |
||||
* |
||||
* This program is distributed in the hope that it will be useful, |
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
* GNU General Public License for more details. |
||||
* |
||||
* You should have received a copy of the GNU General Public License |
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/ |
||||
|
||||
#pragma once |
||||
|
||||
#include "quantum.h" |
||||
#include "ch.h" |
||||
#include <hal.h> |
||||
|
||||
|
||||
#if !defined(STM32F0XX) && !defined(STM32F3XX) |
||||
#error "Only STM23F0 and STM32F3 devices have ADC support in QMK at this time." |
||||
#endif |
||||
|
||||
#if !HAL_USE_ADC |
||||
#error "You need to set HAL_USE_ADC to TRUE in your halconf.h to use the ADC." |
||||
#endif |
||||
|
||||
#if !STM32_ADC_USE_ADC1 && !STM32_ADC_USE_ADC2 && !STM32_ADC_USE_ADC3 && !STM32_ADC_USE_ADC4 |
||||
#error "You need to set one of the 'STM32_ADC_USE_ADCx' settings to TRUE in your mcuconf.h to use the ADC." |
||||
#endif |
||||
|
||||
#if STM32_ADC_DUAL_MODE |
||||
#error "STM32 ADC Dual Mode is not supported at this time." |
||||
#endif |
||||
|
||||
#if STM32_ADCV3_OVERSAMPLING |
||||
#error "STM32 ADCV3 Oversampling is not supported at this time." |
||||
#endif |
||||
|
||||
|
||||
|
||||
typedef struct { |
||||
pin_t pin; |
||||
uint8_t adc; |
||||
} pin_and_adc; |
||||
#define PIN_AND_ADC(p,a) (pin_and_adc){p,a} |
||||
|
||||
|
||||
// analogReference has been left un-defined for ARM devices.
|
||||
// void analogReference(uint8_t mode);
|
||||
|
||||
adcsample_t analogReadPin(pin_t pin); |
||||
adcsample_t analogReadPinAdc(pin_t pin, uint8_t adc); |
||||
pin_and_adc pinToMux(pin_t pin); |
||||
|
||||
adcsample_t adc_read(pin_and_adc mux); |
||||
Loading…
Reference in new issue