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Initialize each ADC only once in Analogread by Candas1 · Pull Request #2133 · stm32duino/Arduino_Core_STM32 · GitHub

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Initialize each ADC only once in Analogread #2133

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Initialize each ADC only once in Analogread #2133

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cc785a9
Initialize each ADC only one in Analogread
Candas1 Sep 18, 2023
df887eb
Fix style issues
Candas1 Sep 19, 2023
bb93fa7
Update analog.cpp
Candas1 Feb 17, 2024
cacc328
Merge branch 'stm32duino:main' into analogread
Candas1 Feb 17, 2024
0a274de
Update analog.cpp
Candas1 Feb 17, 2024
5571b25
Update analog.cpp
Candas1 Feb 17, 2024
535b942
Update analog.cpp
Candas1 Feb 18, 2024
2108d32
Update analog.cpp
Candas1 Feb 18, 2024
065c9b3
Update analog.cpp
Candas1 Feb 18, 2024
575ede5
Fix
Candas1 Feb 18, 2024
aba0a08
Enable scan mode
Candas1 Feb 18, 2024
284bf26
space
Candas1 Feb 18, 2024
2fb1b32
Set the pin each time
Candas1 Feb 19, 2024
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43 changes: 21 additions & 22 deletions libraries/SrcWrapper/src/stm32/analog.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -850,7 +850,7 @@ uint16_t adc_read_value(PinName pin, uint32_t resolution)
#ifdef ADC_SCAN_SEQ_FIXED
AdcHandle.Init.ScanConvMode = ADC_SCAN_SEQ_FIXED; /* Sequencer disabled (ADC conversion on only 1 channel: channel set on rank 1) */
#else
AdcHandle.Init.ScanConvMode = DISABLE; /* Sequencer disabled (ADC conversion on only 1 channel: channel set on rank 1) */
AdcHandle.Init.ScanConvMode = ENABLE; /* Sequencer disabled (ADC conversion on only 1 channel: channel set on rank 1) */
#endif
#ifdef ADC_EOC_SINGLE_CONV
AdcHandle.Init.EOCSelection = ADC_EOC_SINGLE_CONV; /* EOC flag picked-up to indicate conversion end */
Expand Down Expand Up @@ -927,13 +927,22 @@ uint16_t adc_read_value(PinName pin, uint32_t resolution)
AdcHandle.Init.VrefProtection = ADC_VREF_PPROT_NONE;
#endif

AdcHandle.State = HAL_ADC_STATE_RESET;
AdcHandle.DMA_Handle = NULL;
AdcHandle.Lock = HAL_UNLOCKED;
/* Some other ADC_HandleTypeDef fields exists but not required */

g_current_pin = pin; /* Needed for HAL_ADC_MspInit*/

if (!LL_ADC_IsEnabled(AdcHandle.Instance)) {
AdcHandle.State = HAL_ADC_STATE_RESET;
} else {
AdcHandle.State = HAL_ADC_STATE_READY;
/* Configure ADC GPIO pin */
if (!(g_current_pin & PADC_BASE)) {
pinmap_pinout(g_current_pin, PinMap_ADC);
}
}

if (HAL_ADC_Init(&AdcHandle) != HAL_OK) {
return 0;
}
Expand Down Expand Up @@ -981,20 +990,22 @@ uint16_t adc_read_value(PinName pin, uint32_t resolution)
return 0;
}

if (!LL_ADC_IsEnabled(AdcHandle.Instance)) {
#if defined(ADC_CR_ADCAL) || defined(ADC_CR2_RSTCAL)
/*##-2.1- Calibrate ADC then Start the conversion process ####################*/
/*##-2.1- Calibrate ADC then Start the conversion process ####################*/
#if defined(ADC_CALIB_OFFSET)
if (HAL_ADCEx_Calibration_Start(&AdcHandle, ADC_CALIB_OFFSET, ADC_SINGLE_ENDED) != HAL_OK)
if (HAL_ADCEx_Calibration_Start(&AdcHandle, ADC_CALIB_OFFSET, ADC_SINGLE_ENDED) != HAL_OK)
#elif defined(ADC_SINGLE_ENDED) && !defined(ADC1_V2_5)
if (HAL_ADCEx_Calibration_Start(&AdcHandle, ADC_SINGLE_ENDED) != HAL_OK)
if (HAL_ADCEx_Calibration_Start(&AdcHandle, ADC_SINGLE_ENDED) != HAL_OK)
#else
if (HAL_ADCEx_Calibration_Start(&AdcHandle) != HAL_OK)
if (HAL_ADCEx_Calibration_Start(&AdcHandle) != HAL_OK)
#endif
{
/* ADC Calibration Error */
return 0;
}
{
/* ADC Calibration Error */
return 0;
}
#endif
}

/*##-3- Start the conversion process ####################*/
if (HAL_ADC_Start(&AdcHandle) != HAL_OK) {
Expand All @@ -1017,18 +1028,6 @@ uint16_t adc_read_value(PinName pin, uint32_t resolution)
uhADCxConvertedValue = HAL_ADC_GetValue(&AdcHandle);
}

if (HAL_ADC_Stop(&AdcHandle) != HAL_OK) {
/* Stop Conversation Error */
return 0;
}

if (HAL_ADC_DeInit(&AdcHandle) != HAL_OK) {
return 0;
}

if (__LL_ADC_COMMON_INSTANCE(AdcHandle.Instance) != 0U) {
LL_ADC_SetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(AdcHandle.Instance), LL_ADC_PATH_INTERNAL_NONE);
}
return uhADCxConvertedValue;
}
#endif /* HAL_ADC_MODULE_ENABLED && !HAL_ADC_MODULE_ONLY*/
Expand Down
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