[examples] Nucleo-L432KC pwm example

Author: rleh

examples/nucleo_l432kc/pwm/SConstruct

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+# path to the xpcc root directory
+xpccpath = '../../..'
+# execute the common SConstruct file
+exec(compile(open(xpccpath + '/scons/SConstruct', "rb").read(), xpccpath + '/scons/SConstruct', 'exec'))

examples/nucleo_l432kc/pwm/main.cpp

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+#include <xpcc/architecture/platform.hpp>
+
+using namespace Board;
+
+#undef  XPCC_LOG_LEVEL
+#define XPCC_LOG_LEVEL xpcc::log::INFO
+
+// ----------------------------------------------------------------------------
+int
+main()
+{
+	initialize();
+
+	XPCC_LOG_INFO << "Nucleo L432KC PWM example" << xpcc::endl;
+
+	LedGreen::set();
+
+	uint32_t counter = 0;
+
+	GpioOutputA8::connect(Timer1::Channel1);
+	GpioOutputA9::connect(Timer1::Channel2);
+	GpioOutputA10::connect(Timer1::Channel3);
+	GpioOutputA11::connect(Timer1::Channel4);
+
+	Timer1::enable();
+	Timer1::setMode(Timer1::Mode::UpCounter);
+
+	// 80 MHz / 800 / 2^16 ~ 1.5 Hz
+	Timer1::setPrescaler(800);
+	Timer1::setOverflow(65535);
+
+
+	Timer1::configureOutputChannel(1, Timer2::OutputCompareMode::Pwm, 32767);
+	Timer1::configureOutputChannel(2, Timer2::OutputCompareMode::Pwm, 32767);
+	Timer1::configureOutputChannel(3, Timer2::OutputCompareMode::Pwm, 32767);
+	Timer1::configureOutputChannel(4, Timer2::OutputCompareMode::Pwm, 32767);
+
+	Timer1::applyAndReset();
+
+	Timer1::start();
+	Timer1::enableOutput();
+
+	while (true)
+	{
+		LedGreen::toggle();
+		xpcc::delayMilliseconds(500);
+		XPCC_LOG_INFO << "loop: " << counter++ << xpcc::endl;
+		XPCC_LOG_INFO << "Timer1 counter: " << Timer1::getValue() << xpcc::endl;
+	}
+
+	return 0;
+}

examples/nucleo_l432kc/pwm/project.cfg

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+[build]
+board = nucleo_l432kc
+buildpath = ${xpccpath}/build/nucleo_l432kc/${name}
+
+[parameters]
+core.cortex.0.enable_hardfault_handler_led = true
+core.cortex.0.hardfault_handler_led_port = B
+core.cortex.0.hardfault_handler_led_pin = 3