Reset internal vref buffer after an ADC conversion using the config channel function

Author: r-vlaar

targets/TARGET_STM/TARGET_STM32L0/analogin_device.c

@@ -175,11 +175,13 @@ uint16_t adc_read(analogin_t *obj)
     HAL_ADC_Start(&obj->handle); // Start conversion
 
     // Wait end of conversion and get value
+	uint16_t adcValue = 0;
     if (HAL_ADC_PollForConversion(&obj->handle, 10) == HAL_OK) {
-        return (uint16_t)HAL_ADC_GetValue(&obj->handle);
-    } else {
-        return 0;
-    }
+        adcValue = (uint16_t)HAL_ADC_GetValue(&obj->handle);
+	}
+	sConfig.Rank = ADC_RANK_NONE;
+	HAL_ADC_ConfigChannel(&obj->handle, &sConfig);
+	return adcValue;	
 }
 
 #endif