[example] Add Nucleo-L552ZE-Q basic ADC example

Author: chris-durand

examples/nucleo_l552ze-q/adc_basic/main.cpp

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+/*
+ * Copyright (c) 2021, Raphael Lehmann
+ * Copyright (c) 2022, Christopher Durand
+ *
+ * This file is part of the modm project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <modm/board.hpp>
+
+#undef	MODM_LOG_LEVEL
+#define	MODM_LOG_LEVEL modm::log::INFO
+
+int
+main()
+{
+	Board::initialize();
+
+	MODM_LOG_INFO << "STM32L5 ADC basic example" << modm::endl;
+	MODM_LOG_INFO << " running on Nucleo-L552ZE-Q" << modm::endl << modm::endl;
+
+	MODM_LOG_INFO << "Configuring ADC ...";
+	// max. ADC clock for STM32L552: 80 MHz
+	// 110 MHz AHB clock / 2 = 55 MHz
+	Adc1::initialize(
+		Adc1::ClockMode::SynchronousPrescaler2,
+		Adc1::ClockSource::SystemClock,
+		Adc1::Prescaler::Disabled,
+		Adc1::CalibrationMode::SingleEndedInputsMode,
+		true);
+	// GpioB1: A6
+	Adc1::connect<GpioB1::In16>();
+	Adc1::setPinChannel<GpioB1>(Adc1::SampleTime::Cycles13);
+
+	while (true)
+	{
+		Adc1::startConversion();
+		while(!Adc1::isConversionFinished)
+			;
+		const auto adcValue = Adc1::getValue();
+		MODM_LOG_INFO << "adcValue=" << adcValue;
+		const float voltage = adcValue * 3.3 / 0xfff;
+		MODM_LOG_INFO << " voltage=";
+		MODM_LOG_INFO.printf("%.3f\n", voltage);
+		Board::Leds::toggle();
+		modm::delay(500ms);
+	}
+
+	return 0;
+}

examples/nucleo_l552ze-q/adc_basic/project.xml

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+<library>
+  <extends>modm:nucleo-l552ze-q</extends>
+  <options>
+    <option name="modm:build:build.path">../../../build/nucleo_l552ze-q/adc_basic</option>
+  </options>
+  <modules>
+    <module>modm:debug</module>
+    <module>modm:platform:adc:1</module>
+    <module>modm:build:scons</module>
+  </modules>
+</library>