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Drivers: ADC: added driver for STM32H7 devices

This commit is contained in:
Silvano Seva 2024-11-01 17:36:18 +01:00
parent 7b35715ee4
commit f5012e0f63
8 changed files with 140 additions and 8 deletions
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1
meson.build
View File

@ -284,6 +284,7 @@ stm32h743_src = ['platform/mcu/STM32H7xx/boot/startup.cpp',
'platform/mcu/STM32H7xx/drivers/pll.cpp',
'platform/mcu/STM32H7xx/drivers/delays.cpp',
'platform/drivers/GPIO/gpio_stm32.c',
'platform/drivers/ADC/adc_stm32h7.c',
'platform/mcu/CMSIS/Device/ST/STM32H7xx/Source/system_stm32h7xx.c']
stm32h743_inc = ['platform/mcu/CMSIS/Include',

6
platform/drivers/ADC/adc_stm32.h
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@ -30,9 +30,9 @@ extern "C" {
* @param name: instance name.
* @param periph: pointer to hardware peripheral.
* @param mutx: pointer to mutex for concurrent access, can be NULL.
* @param vref: ADC reference voltage, in uV.
* @param res: ADC resolution in uV/LSB.
*/
#define ADC_STM32_DEVICE_DEFINE(name, periph, mutx, vref) \
#define ADC_STM32_DEVICE_DEFINE(name, periph, mutx, res) \
extern uint16_t adcStm32_sample(const struct Adc *adc, \
const uint32_t channel); \
const struct Adc name = \
@ -40,7 +40,7 @@ const struct Adc name = \
.sample = &adcStm32_sample, \
.priv = periph, \
.mutex = mutx, \
.countsTouV = ADC_COUNTS_TO_UV(vref, 12) \
.countsTouV = res \
};
/**

131
platform/drivers/ADC/adc_stm32h7.c Normal file
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@ -0,0 +1,131 @@
/***************************************************************************
* Copyright (C) 2024 by Silvano Seva IU2KWO *
* *
* 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 3 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 <stm32h7xx.h>
#include <pthread.h>
#include <errno.h>
#include "adc_stm32.h"
int adcStm32_init(const struct Adc *adc)
{
/*
* Configure ADC for synchronous clock mode (clocked by AHB clock), divided
* by 4. This gives an ADC clock of 50MHz when AHB clock is 200MHz.
*
* NOTE: ADC1 and ADC2 share the same clock tree!
*/
switch((uint32_t) adc->priv)
{
case ADC1_BASE:
case ADC2_BASE:
RCC->AHB1ENR |= RCC_AHB1ENR_ADC12EN;
__DSB();
ADC12_COMMON->CCR = ADC_CCR_CKMODE_1
| ADC_CCR_CKMODE_0;
break;
case ADC3_BASE:
RCC->AHB4ENR |= RCC_AHB4ENR_ADC3EN;
__DSB();
ADC3_COMMON->CCR = ADC_CCR_CKMODE_1
| ADC_CCR_CKMODE_0;
break;
default:
return -EINVAL;
break;
}
ADC_TypeDef *pAdc = ((ADC_TypeDef *) adc->priv);
// Enable ADC voltage regulator, enable boost mode. Wait until LDO regulator
// is ready.
pAdc->CR = ADC_CR_ADVREGEN
| ADC_CR_BOOST_1
| ADC_CR_BOOST_0;
while((pAdc->ISR & ADC_ISR_LDORDY) == 0) ;
// Start calibration, both offset and linearity.
pAdc->CR |= ADC_CR_ADCAL
| ADC_CR_ADCALLIN;
while((pAdc->CR & ADC_CR_ADCAL) != 0) ;
/*
* ADC clock is 50MHz. We set the sample time of each channel to 387.5 ADC
* cycles, giving a total conversion time of ~7us.
*/
pAdc->SMPR2 = 0x36DB6DB6;
pAdc->SMPR1 = 0x36DB6DB6;
// Finally,turn on the ADC
pAdc->CR |= ADC_CR_ADEN;
while((pAdc->ISR & ADC_ISR_ADRDY) != 0) ;
if(adc->mutex != NULL)
pthread_mutex_init((pthread_mutex_t *) adc->mutex, NULL);
return 0;
}
void adcStm32_terminate(const struct Adc *adc)
{
// A conversion may be in progress, wait until it finishes
if(adc->mutex != NULL)
pthread_mutex_lock((pthread_mutex_t *) adc->mutex);
((ADC_TypeDef *) adc->priv)->CR = 0;
switch((uint32_t) adc->priv)
{
case ADC1_BASE:
case ADC2_BASE:
if((ADC1->CR == 0) && (ADC2->CR == 0))
RCC->AHB1ENR &= ~RCC_AHB1ENR_ADC12EN;
__DSB();
break;
case ADC3_BASE:
RCC->AHB4ENR &= ~RCC_AHB4ENR_ADC3EN;
__DSB();
break;
default:
break;
}
if(adc->mutex != NULL)
pthread_mutex_destroy((pthread_mutex_t *) adc->mutex);
}
uint16_t adcStm32_sample(const struct Adc *adc, const uint32_t channel)
{
if(channel > 16)
return 0;
ADC_TypeDef *pAdc = ((ADC_TypeDef *) adc->priv);
pAdc->SQR1 = channel << ADC_SQR1_SQ1_Pos;
pAdc->PCSEL = 1 << channel;
pAdc->CR |= ADC_CR_ADSTART;
while((pAdc->ISR & ADC_ISR_EOC) == 0) ;
return pAdc->DR;
}

2
platform/targets/CS7000/hwconfig.c
View File

@ -98,7 +98,7 @@ SPI_BITBANG_DEVICE_DEFINE(det_spi, spiDetCfg, NULL)
SPI_BITBANG_DEVICE_DEFINE(pll_spi, spiPllCfg, NULL)
SPI_STM32_DEVICE_DEFINE(c6000_spi, SPI2, &c6000_mutex)
GPIO_SHIFTREG_DEVICE_DEFINE(extGpio, (const struct spiDevice *) &spiSr, shiftRegStrobe, 24)
ADC_STM32_DEVICE_DEFINE(adc1, ADC1, &adc1Mutex, 3300000)
ADC_STM32_DEVICE_DEFINE(adc1, ADC1, &adc1Mutex, ADC_COUNTS_TO_UV(3300000, 12))
const struct ak2365a detector =
{

2
platform/targets/MD-3x0/hwconfig.c
View File

@ -49,7 +49,7 @@ static pthread_mutex_t adc1Mutex;
SPI_STM32_DEVICE_DEFINE(nvm_spi, SPI1, NULL)
SPI_BITBANG_DEVICE_DEFINE(pll_spi, spiPllCfg, NULL)
SPI_BITBANG_DEVICE_DEFINE(c5000_spi, spiC5000Cfg, NULL)
ADC_STM32_DEVICE_DEFINE(adc1, ADC1, &adc1Mutex, 3300000)
ADC_STM32_DEVICE_DEFINE(adc1, ADC1, &adc1Mutex, ADC_COUNTS_TO_UV(3300000, 12))
const struct sky73210 pll =
{

2
platform/targets/MD-9600/hwconfig.c
View File

@ -27,4 +27,4 @@ static pthread_mutex_t spi2Mutex;
static pthread_mutex_t adcMutex;
SPI_STM32_DEVICE_DEFINE(spi2, SPI2, &spi2Mutex)
ADC_STM32_DEVICE_DEFINE(adc1, ADC1, &adcMutex, 3300000)
ADC_STM32_DEVICE_DEFINE(adc1, ADC1, &adcMutex, ADC_COUNTS_TO_UV(3300000, 12))

2
platform/targets/MD-UV3x0/hwconfig.c
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@ -75,4 +75,4 @@ static uint8_t spiC6000_func(const void *priv, uint8_t value)
SPI_CUSTOM_DEVICE_DEFINE(c6000_spi, spiC6000_func, NULL, &c6000_mutex)
SPI_STM32_DEVICE_DEFINE(nvm_spi, SPI1, NULL)
ADC_STM32_DEVICE_DEFINE(adc1, ADC1, &adcMutex, 3300000)
ADC_STM32_DEVICE_DEFINE(adc1, ADC1, &adcMutex, ADC_COUNTS_TO_UV(3300000, 12))

2
platform/targets/Module17/platform.c
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@ -33,7 +33,7 @@
#include <errno.h>
ADC_STM32_DEVICE_DEFINE(adc1, ADC1, NULL, 3300000)
ADC_STM32_DEVICE_DEFINE(adc1, ADC1, NULL, ADC_COUNTS_TO_UV(3300000, 12))
I2C_STM32_DEVICE_DEFINE(i2c1, I2C1, NULL)
I2C_STM32_DEVICE_DEFINE(i2c2, I2C2, NULL)