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STM32F3 correct analogin_read #8131

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Merged
merged 1 commit into from
Sep 25, 2018
Merged

STM32F3 correct analogin_read #8131

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22 changes: 17 additions & 5 deletions targets/TARGET_STM/TARGET_STM32F3/analogin_device.c
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@
#include "cmsis.h"
#include "pinmap.h"
#include "mbed_error.h"
#include "mbed_debug.h"
#include "PeripheralPins.h"

void analogin_init(analogin_t *obj, PinName pin)
Expand Down Expand Up @@ -211,16 +212,27 @@ uint16_t adc_read(analogin_t *obj)
return 0;
}

HAL_ADC_ConfigChannel(&obj->handle, &sConfig);
if (HAL_ADC_ConfigChannel(&obj->handle, &sConfig) != HAL_OK) {
debug("HAL_ADC_ConfigChannel issue\n");;
}

if (HAL_ADC_Start(&obj->handle) != HAL_OK) {
debug("HAL_ADC_Start issue\n");;
}

HAL_ADC_Start(&obj->handle); // Start conversion
uint16_t MeasuredValue = 0;

// Wait end of conversion and get value
if (HAL_ADC_PollForConversion(&obj->handle, 10) == HAL_OK) {
return (uint16_t)HAL_ADC_GetValue(&obj->handle);
MeasuredValue = (uint16_t)HAL_ADC_GetValue(&obj->handle);
} else {
return 0;
debug("HAL_ADC_PollForConversion issue\n");
}

if (HAL_ADC_Stop(&obj->handle) != HAL_OK) {
debug("HAL_ADC_Stop issue\n");;
}

return MeasuredValue;
}

#endif