STATIC void adcx_init_periph(ADC_HandleTypeDef *adch, uint32_t resolution) {
adcx_clock_enable();
adch->Instance = ADCx;
adch->Init.Resolution = resolution;
adch->Init.ContinuousConvMode = DISABLE;
adch->Init.DiscontinuousConvMode = DISABLE;
#if !defined(STM32F0)
adch->Init.NbrOfDiscConversion = 0;
adch->Init.NbrOfConversion = 1;
#endif
adch->Init.EOCSelection = ADC_EOC_SINGLE_CONV;
adch->Init.ExternalTrigConv = ADC_SOFTWARE_START;
adch->Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
#if defined(STM32F0) || defined(STM32F4) || defined(STM32F7)
adch->Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;
adch->Init.ScanConvMode = DISABLE;
adch->Init.DataAlign = ADC_DATAALIGN_RIGHT;
adch->Init.DMAContinuousRequests = DISABLE;
#elif defined(STM32H7)
adch->Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;
adch->Init.BoostMode = ENABLE;
adch->Init.ScanConvMode = DISABLE;
adch->Init.LowPowerAutoWait = DISABLE;
adch->Init.Overrun = ADC_OVR_DATA_OVERWRITTEN;
adch->Init.OversamplingMode = DISABLE;
adch->Init.LeftBitShift = ADC_LEFTBITSHIFT_NONE;
adch->Init.ConversionDataManagement = ADC_CONVERSIONDATA_DR;
#elif defined(STM32L4)
adch->Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
adch->Init.ScanConvMode = ADC_SCAN_DISABLE;
adch->Init.LowPowerAutoWait = DISABLE;
adch->Init.Overrun = ADC_OVR_DATA_PRESERVED;
adch->Init.OversamplingMode = DISABLE;
adch->Init.DataAlign = ADC_DATAALIGN_RIGHT;
adch->Init.DMAContinuousRequests = DISABLE;
#else
#error Unsupported processor
#endif
#if defined(STM32F0)
adch->Init.SamplingTimeCommon = ADC_SAMPLETIME_71CYCLES_5;
#endif
HAL_ADC_Init(adch);
#if defined(STM32H7)
HAL_ADCEx_Calibration_Start(adch, ADC_CALIB_OFFSET, ADC_SINGLE_ENDED);
#endif
#if defined(STM32L4)
HAL_ADCEx_Calibration_Start(adch, ADC_SINGLE_ENDED);
#endif
}
STATIC void adc_init_single(pyb_obj_adc_t *adc_obj) {
if (!is_adcx_channel(adc_obj->channel)) {
return;
}
if (ADC_FIRST_GPIO_CHANNEL <= adc_obj->channel && adc_obj->channel <= ADC_LAST_GPIO_CHANNEL) {
// Channels 0-16 correspond to real pins. Configure the GPIO pin in
// ADC mode.
const pin_obj_t *pin = pin_adc1[adc_obj->channel];
mp_hal_gpio_clock_enable(pin->gpio);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.Pin = pin->pin_mask;
#if defined(STM32F4) || defined(STM32F7)
GPIO_InitStructure.Mode = GPIO_MODE_ANALOG;
#elif defined(STM32L4)
GPIO_InitStructure.Mode = GPIO_MODE_ANALOG_ADC_CONTROL;
#else
#error Unsupported processor
#endif
GPIO_InitStructure.Pull = GPIO_NOPULL;
HAL_GPIO_Init(pin->gpio, &GPIO_InitStructure);
}
adcx_clock_enable();
ADC_HandleTypeDef *adcHandle = &adc_obj->handle;
adcHandle->Instance = ADCx;
adcHandle->Init.ContinuousConvMode = DISABLE;
adcHandle->Init.DiscontinuousConvMode = DISABLE;
adcHandle->Init.NbrOfDiscConversion = 0;
adcHandle->Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
adcHandle->Init.DataAlign = ADC_DATAALIGN_RIGHT;
adcHandle->Init.NbrOfConversion = 1;
adcHandle->Init.DMAContinuousRequests = DISABLE;
adcHandle->Init.Resolution = ADC_RESOLUTION_12B;
#if defined(STM32F4) || defined(STM32F7)
adcHandle->Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;
adcHandle->Init.ScanConvMode = DISABLE;
adcHandle->Init.ExternalTrigConv = ADC_EXTERNALTRIGCONV_T1_CC1;
adcHandle->Init.EOCSelection = DISABLE;
#elif defined(STM32L4)
adcHandle->Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
adcHandle->Init.ScanConvMode = ADC_SCAN_DISABLE;
adcHandle->Init.EOCSelection = ADC_EOC_SINGLE_CONV;
adcHandle->Init.ExternalTrigConv = ADC_SOFTWARE_START;
adcHandle->Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
adcHandle->Init.LowPowerAutoWait = DISABLE;
adcHandle->Init.Overrun = ADC_OVR_DATA_PRESERVED;
adcHandle->Init.OversamplingMode = DISABLE;
#else
#error Unsupported processor
#endif
HAL_ADC_Init(adcHandle);
#if defined(STM32L4)
ADC_MultiModeTypeDef multimode;
multimode.Mode = ADC_MODE_INDEPENDENT;
if (HAL_ADCEx_MultiModeConfigChannel(adcHandle, &multimode) != HAL_OK)
{
nlr_raise(mp_obj_new_exception_msg_varg(&mp_type_ValueError, "Can not set multimode on ADC1 channel: %d", adc_obj->channel));
}
#endif
}
