STM32G4: Generate complementary output setup for Timers 15,16,17

Author: Sergey Pluzhnikov

src/modm/platform/timer/stm32/general_purpose.cpp.in

@@ -197,6 +197,39 @@ modm::platform::Timer{{ id }}::configureOutputChannel(uint32_t channel,
 	}
 }
 
+%% if target.family in ["g4"] and id in [15, 16, 17]
+void
+modm::platform::Timer{{ id }}::configureOutputChannel(uint32_t channel,
+OutputCompareMode mode,
+PinState out, OutputComparePolarity polarity,
+PinState out_n, OutputComparePolarity polarity_n,
+OutputComparePreload preload)
+{
+	modm_assert(channel == 1, "Timer{{ id }}", "This timer has complementary output only on channel 1!", "{{ id }}");
+
+	channel -= 1;	
+
+	// disable output
+	TIM{{ id }}->CCER &= ~(0xf << (channel * 4));
+
+	uint32_t flags = static_cast<uint32_t>(mode) | static_cast<uint32_t>(preload);
+
+	const uint32_t offset = 8 * channel;
+
+	flags <<= offset;
+	flags |= TIM{{ id }}->CCMR1 & ~(0xff << offset);
+
+	TIM{{ id }}->CCMR1 = flags;
+
+	// CCER Flags (Enable/Polarity)
+	flags = (static_cast<uint32_t>(polarity_n) << 2) |
+			(static_cast<uint32_t>(out_n)      << 2) |
+			 static_cast<uint32_t>(polarity) | static_cast<uint32_t>(out);
+
+	TIM{{ id }}->CCER |= flags << (channel * 4);
+}
+%% endif
+
 // ----------------------------------------------------------------------------
 void
 modm::platform::Timer{{ id }}::enableInterruptVector(bool enable, uint32_t priority)
@@ -240,4 +273,4 @@ modm::platform::Timer{{ id }}::isChannelConfiguredAsInput(uint32_t channel)
 	}
 	return isInput;
 }
-%% endif
+%% endif

src/modm/platform/timer/stm32/general_purpose.hpp.in

@@ -387,6 +387,28 @@ public:
 		configureOutputChannel(channel, mode, compareValue, out, enableComparePreload);
 	}
 
+%% if target.family in ["g4"] and id in [15, 16, 17]
+	static void
+	configureOutputChannel(uint32_t channel, OutputCompareMode mode,
+			PinState out, OutputComparePolarity polarity,
+			PinState out_n,
+			OutputComparePolarity polarity_n = OutputComparePolarity::ActiveHigh,
+			OutputComparePreload preload = OutputComparePreload::Disable);
+
+	template<typename Signal>
+	static void
+	configureOutputChannel(OutputCompareMode mode,
+			PinState out, OutputComparePolarity polarity,
+			PinState out_n,
+			OutputComparePolarity polarity_n = OutputComparePolarity::ActiveHigh,
+			OutputComparePreload preload = OutputComparePreload::Disable)
+	{
+		constexpr auto channel = signalToChannel<Peripheral::Tim{{ id }}, Signal>();
+		static_assert(channel == 1, "Timer{{ id }} has complementary output only on channel 1");
+		configureOutputChannel(channel, mode, out, polarity, out_n, polarity_n, preload);
+	}
+%% endif
+
 	/// Switch to Pwm Mode 2
 	///
 	/// While upcounting channel will be active as long as the time value is