Merge remote-tracking branch 'upstream/master'

Author: straccio

cores/arduino/Arduino.h

@@ -20,6 +20,15 @@
 #ifndef Arduino_h
 #define Arduino_h
 
+#ifndef GCC_VERSION
+#define GCC_VERSION (__GNUC__ * 10000 \
+                     + __GNUC_MINOR__ * 100 \
+                     + __GNUC_PATCHLEVEL__)
+#endif
+#if GCC_VERSION < 60300
+#error "GCC version 6.3 or higher is required"
+#endif
+
 #include "wiring.h"
 
 /* sketch */

cores/arduino/stm32/analog.c

@@ -606,6 +606,11 @@ uint16_t adc_read_value(PinName pin)
   AdcChannelConf.Rank         = ADC_REGULAR_RANK_1;               /* Specifies the rank in the regular group sequencer */
 #ifndef STM32L0xx
   AdcChannelConf.SamplingTime = SAMPLINGTIME;                     /* Sampling time value to be set for the selected channel */
+#endif
+#if defined (STM32F3xx) || defined (STM32L4xx)
+  AdcChannelConf.SingleDiff   = ADC_SINGLE_ENDED;                 /* Single-ended input channel */
+  AdcChannelConf.OffsetNumber = ADC_OFFSET_NONE;                  /* No offset subtraction */
+  AdcChannelConf.Offset = 0;                                      /* Parameter discarded because offset correction is disabled */
 #endif
   /*##-2- Configure ADC regular channel ######################################*/
   if (HAL_ADC_ConfigChannel(&AdcHandle, &AdcChannelConf) != HAL_OK)