STM32L0 ADC internal channels update

Author: jeromecoutant

targets/TARGET_STM/TARGET_STM32L0/analogin_device.c

@@ -35,11 +35,9 @@
 #include "pinmap.h"
 #include "mbed_error.h"
 #include "PeripheralPins.h"
-#include <stdbool.h>
 
 void analogin_init(analogin_t *obj, PinName pin)
 {
-    static bool adc_calibrated = false;
     uint32_t function = (uint32_t)NC;
 
     // ADC Internal Channels "pins"  (Temperature, Vref, Vbat, ...)
@@ -92,9 +90,7 @@ void analogin_init(analogin_t *obj, PinName pin)
         error("Cannot initialize ADC");
     }
 
-    // ADC calibration is done only once
-    if (!adc_calibrated) {
-        adc_calibrated = true;
+    if (!HAL_ADCEx_Calibration_GetValue(&obj->handle, ADC_SINGLE_ENDED)) {
         HAL_ADCEx_Calibration_Start(&obj->handle, ADC_SINGLE_ENDED);
     }
 
@@ -171,7 +167,9 @@ uint16_t adc_read(analogin_t *obj)
             return 0;
     }
 
-    ADC1->CHSELR = 0; // [TODO] Workaround. To be removed after Cube driver is corrected.
+    /* Reset ADC channel selection register */
+    ADC1->CHSELR = 0;
+
     HAL_ADC_ConfigChannel(&obj->handle, &sConfig);
 
     HAL_ADC_Start(&obj->handle); // Start conversion

targets/TARGET_STM/TARGET_STM32L0/device/stm32l0xx_hal_adc.h

@@ -44,6 +44,9 @@
 /* Includes ------------------------------------------------------------------*/
 #include "stm32l0xx_hal_def.h"
 
+/* Include low level driver */
+#include "stm32l0xx_ll_adc.h"
+
 /** @addtogroup STM32L0xx_HAL_Driver
   * @{
   */