add api to set injected conversion trigger edge and source

Author: Tecnologic

src/modm/platform/adc/stm32f3/adc.hpp.in

@@ -309,6 +309,14 @@ public:
 %% endif
 	};
 
+	enum class ExternalTriggerEdge : uint32_t
+	{
+		Disabled = 0,
+		Rising = ADC_JSQR_JEXTEN_0,
+		Falling = ADC_JSQR_JEXTEN_1,
+		RisingAndFalling = ADC_JSQR_JEXTEN_0 | ADC_JSQR_JEXTEN_1,
+	};
+
 	enum class Interrupt : uint32_t
 	{
 		Ready 								= ADC_IER_ADRDYIE,
@@ -539,11 +547,24 @@ public:
 	static inline bool
 	setInjectedConversionSequenceLength(uint8_t length);
 
+	/**
+	 * @arg edge Edge of the trigger signal selected in setInjectedTriggerSource()
+	 */
+	static inline void 
+	setInjectedConversionTriggerEdge(ExternalTriggerEdge edge);
+
+	/**
+	 * @arg source Source of the trigger signal for injected conversion.
+	 * @return true if configuration is successful, false if arguments are invalid
+	 */
+	static inline bool 
+	setInjectedConversionTriggerSource(uint32_t source);
+
 	/**
 	 * @return If the injected conversion sequence is finished.
 	 * @pre An injected conversion should have been started with startInjectedConversionSequence()
 	 */
-	static inline bool
+	static inline bool 
 	isInjectedConversionFinished();
 
 	/**

src/modm/platform/adc/stm32f3/adc_impl.hpp.in

@@ -351,6 +351,31 @@ modm::platform::Adc{{ id }}::setInjectedConversionSequenceLength(uint8_t length)
 	return true;
 }
 
+void 
+modm::platform::Adc{{ id }}::setInjectedConversionTriggerEdge(ExternalTriggerEdge edge)
+{
+	static_assert(std::to_underlying(ExternalTriggerEdge::Disabled) == 0);
+	static_assert(std::to_underlying(ExternalTriggerEdge::Rising) == ADC_JSQR_JEXTEN_0);
+	static_assert(std::to_underlying(ExternalTriggerEdge::Falling) == ADC_JSQR_JEXTEN_1);
+	static_assert(std::to_underlying(ExternalTriggerEdge::RisingAndFalling) == (ADC_JSQR_JEXTEN_0 | ADC_JSQR_JEXTEN_1));
+
+	ADC{{ id }}->JSQR = (ADC{{ id }}->JSQR & ~ADC_JSQR_JEXTEN_Msk) 
+		| std::to_underlying(edge);
+}
+
+bool
+modm::platform::Adc{{ id }}::setInjectedConversionTriggerSource(uint32_t source)
+{
+	if (source > 31) {
+		return false; // Invalid source
+	}
+
+	// Set the trigger source for injected conversions
+	ADC{{ id }}->JSQR = (ADC{{ id }}->JSQR & ~ADC_JSQR_JEXTSEL_Msk) 
+		| (source << ADC_JSQR_JEXTSEL_Pos);
+	return true;
+}
+
 bool
 modm::platform::Adc{{ id }}::isInjectedConversionFinished()
 {