[driver] add stm32f469_disco example for max31865

Author: hshose

examples/stm32f469_discovery/max31865/main.cpp

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+// coding: utf-8
+/*
+ * Copyright (c) 2023, Henrik Hose
+ *
+ * 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>
+#include <modm/driver/temperature/max31865.hpp>
+#include <modm/processing.hpp>
+
+using namespace Board;
+
+using SpiMaster = modm::platform::SpiMaster2;
+
+using Cs = D9;
+using Mosi = D11;
+using Miso = D12;
+using Sck = D13;
+
+class ThermocoupleThread : public modm::pt::Protothread
+{
+public:
+	ThermocoupleThread() : data{}, pt100(data) {}
+
+	bool
+	run()
+	{
+		PT_BEGIN();
+		PT_CALL(pt100.initialize());
+
+		while (true)
+		{
+			MODM_LOG_INFO << "\nNew readout:" << modm::endl;
+			PT_CALL(pt100.readout());
+
+			MODM_LOG_INFO << "          resistance : " << data.getResistance() << " Ohm"
+						  << modm::endl;
+			MODM_LOG_INFO << "     temperature fast: " << data.getTemperatureFast() << " degrees"
+						  << modm::endl;
+			MODM_LOG_INFO << "  temperature precise: " << data.getTemperaturePrecise() << " degrees"
+						  << modm::endl;
+
+			timeout.restart(std::chrono::milliseconds(1000));
+			PT_WAIT_UNTIL(timeout.isExpired());
+		}
+
+		PT_END();
+	}
+
+private:
+	using Max31865 = modm::Max31865<SpiMaster, Cs, modm::max31865::pt100>;
+	Max31865::Data data;
+	Max31865 pt100;
+
+	modm::ShortTimeout timeout;
+};
+
+ThermocoupleThread pt100Thread{};
+
+int
+main()
+{
+	Board::initialize();
+	Cs::setOutput(modm::Gpio::High);
+
+	SpiMaster::connect<Miso::Miso, Mosi::Mosi, Sck::Sck>();
+	SpiMaster::initialize<Board::SystemClock, 351_kHz>();
+
+	MODM_LOG_INFO << "==========MAX 31865 Test==========" << modm::endl;
+	MODM_LOG_DEBUG << "Debug logging here" << modm::endl;
+	MODM_LOG_INFO << "Info logging here" << modm::endl;
+	MODM_LOG_WARNING << "Warning logging here" << modm::endl;
+	MODM_LOG_ERROR << "Error logging here" << modm::endl;
+	MODM_LOG_INFO << "===============================" << modm::endl;
+
+	while (true)
+	{
+		pt100Thread.run();
+		Board::LedOrange::toggle();
+	}
+
+	return 0;
+}

examples/stm32f469_discovery/max31865/project.xml

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+<library>
+	<extends>modm:disco-f469ni</extends>
+	<options>
+		<option name="modm:build:build.path">../../../build/stm32f469_discovery/max31865</option>
+	</options>
+	<modules>
+		<module>modm:driver:max31865</module>
+		<module>modm:platform:gpio</module>
+		<module>modm:platform:spi:2</module>
+		<module>modm:processing:protothread</module>
+		<module>modm:processing:timer</module>
+		<module>modm:build:scons</module>
+	</modules>
+</library>