analogRead: don't set ADC common register when ADC doesn't support it.

ABOSTM · fpistm · commit 7d72a79844ad · 2020-02-03T15:44:39.000+01:00
STM32F103ZE: ADC3 doesn't support common settings.
__LL_ADC_COMMON_INSTANCE(ADC3) returns 0
diff --git a/libraries/SrcWrapper/src/stm32/analog.cpp b/libraries/SrcWrapper/src/stm32/analog.cpp
@@ -1006,8 +1006,9 @@ uint16_t adc_read_value(PinName pin, uint32_t resolution)
     return 0;
   }
 
-  LL_ADC_SetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(AdcHandle.Instance), LL_ADC_PATH_INTERNAL_NONE);
-
+  if (__LL_ADC_COMMON_INSTANCE(AdcHandle.Instance) != 0U) {
+    LL_ADC_SetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(AdcHandle.Instance), LL_ADC_PATH_INTERNAL_NONE);
+  }
   return uhADCxConvertedValue;
 }
 #endif /* HAL_ADC_MODULE_ENABLED && !HAL_ADC_MODULE_ONLY*/

Original file line number	Diff line number	Diff line change
`@@ -1006,8 +1006,9 @@ uint16_t adc_read_value(PinName pin, uint32_t resolution)`
`1006`	`1006`	`return 0;`
`1007`	`1007`	`}`
`1008`	`1008`
`1009`		`- LL_ADC_SetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(AdcHandle.Instance), LL_ADC_PATH_INTERNAL_NONE);`
`1010`		`-`
	`1009`	`+ if (__LL_ADC_COMMON_INSTANCE(AdcHandle.Instance) != 0U) {`
	`1010`	`+ LL_ADC_SetCommonPathInternalCh(__LL_ADC_COMMON_INSTANCE(AdcHandle.Instance), LL_ADC_PATH_INTERNAL_NONE);`
	`1011`	`+ }`
`1011`	`1012`	`return uhADCxConvertedValue;`
`1012`	`1013`	`}`
`1013`	`1014`	`#endif /* HAL_ADC_MODULE_ENABLED && !HAL_ADC_MODULE_ONLY*/`