STM32L1 ADC internal channels update

Author: jeromecoutant

targets/TARGET_STM/TARGET_STM32L1/analogin_device.c

@@ -35,12 +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_hsi_inited = false;
-    RCC_OscInitTypeDef RCC_OscInitStruct;
     uint32_t function = (uint32_t)NC;
 
     // ADC Internal Channels "pins"  (Temperature, Vref, Vbat, ...)
@@ -92,10 +89,9 @@ void analogin_init(analogin_t *obj, PinName pin)
         error("Cannot initialize ADC");
     }
 
-    // This section is done only once
-    if (!adc_hsi_inited) {
-        adc_hsi_inited = true;
+    if (!__HAL_RCC_GET_FLAG(RCC_FLAG_HSIRDY)) {
         // Enable the HSI (to clock the ADC)
+        RCC_OscInitTypeDef RCC_OscInitStruct;
         RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
         RCC_OscInitStruct.HSIState       = RCC_HSI_ON;
         RCC_OscInitStruct.PLL.PLLState   = RCC_PLL_NONE;

targets/TARGET_STM/TARGET_STM32L1/device/stm32l1xx_hal_adc.h

@@ -44,6 +44,9 @@
 /* Includes ------------------------------------------------------------------*/
 #include "stm32l1xx_hal_def.h"
 
+/* Include low level driver */
+#include "stm32l1xx_ll_adc.h"
+
 /** @addtogroup STM32L1xx_HAL_Driver
   * @{
   */