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STM32H7 ADC internal channels #10149

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Merged
merged 1 commit into from
Mar 20, 2019
Merged

STM32H7 ADC internal channels #10149

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6 changes: 3 additions & 3 deletions targets/TARGET_STM/TARGET_STM32H7/TARGET_STM32H743xI/TARGET_NUCLEO_H743ZI/PeripheralPins.c
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Original file line number Diff line number Diff line change
Expand Up @@ -118,9 +118,9 @@ MBED_WEAK const PinMap PinMap_ADC[] = {
};

MBED_WEAK const PinMap PinMap_ADC_Internal[] = {
{ADC_TEMP, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 16, 0)},
{ADC_VREF, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)},
{ADC_VBAT, ADC_1, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)},
{ADC_TEMP, ADC_3, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 18, 0)}, // ADC3_INP/INN18
{ADC_VREF, ADC_3, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 19, 0)}, // ADC3_INP/INN19
{ADC_VBAT, ADC_3, STM_PIN_DATA_EXT(STM_MODE_ANALOG, GPIO_NOPULL, 0, 17, 0)}, // ADC3_INP/INN17
{NC, NC, 0}
};

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17 changes: 17 additions & 0 deletions targets/TARGET_STM/TARGET_STM32H7/analogin_device.c
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Original file line number Diff line number Diff line change
Expand Up @@ -190,17 +190,34 @@ uint16_t adc_read(analogin_t *obj)
break;
case 17:
sConfig.Channel = ADC_CHANNEL_17;

if ((ADCName)obj->handle.Instance == ADC_3) {
sConfig.Channel = ADC_CHANNEL_VBAT;
sConfig.SamplingTime = ADC_SAMPLETIME_810CYCLES_5;
}
break;
case 18:
sConfig.Channel = ADC_CHANNEL_18;

if ((ADCName)obj->handle.Instance == ADC_3) {
sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;
sConfig.SamplingTime = ADC_SAMPLETIME_810CYCLES_5;
}
break;
case 19:
sConfig.Channel = ADC_CHANNEL_19;

if ((ADCName)obj->handle.Instance == ADC_3) {
sConfig.Channel = ADC_CHANNEL_VREFINT;
sConfig.SamplingTime = ADC_SAMPLETIME_810CYCLES_5;
}
break;
default:
return 0;
}

LL_ADC_Disable((&obj->handle)->Instance);

HAL_ADC_ConfigChannel(&obj->handle, &sConfig);

HAL_ADC_Start(&obj->handle); // Start conversion
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