[examples] Added Sx1276 LoRa example for Nucleo64

examples/nucleo_f411re/sx1276_rx/main.cpp

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+/*
+ * Copyright (c) 2020 Benjamin Carrick
+ *
+ * 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/radio/sx1276.hpp>
+
+using namespace Board;
+using namespace modm;
+
+int
+main()
+{
+	Board::initialize();
+
+	//RxTx selection on the mbed shield
+	using RxTx = Board::A4;
+
+	using SpiMosi = Board::D11;
+	using SpiMiso = Board::D12;
+	using SpiSck = Board::D13;
+	using SpiCs = Board::D10;
+
+	//Set the RF switch to Receive
+	RxTx::setOutput();
+	RxTx::reset();
+
+	//Initialize the SPI
+	SpiCs::setOutput();
+	SpiCs::set();
+
+	SpiMaster1::connect<SpiSck::Sck, SpiMosi::Mosi, SpiMiso::Miso>();
+	SpiMaster1::initialize<Board::SystemClock, 1500_kHz>();
+
+	MODM_LOG_DEBUG << "Starting the modem" << modm::endl;
+
+	// Create an instance of the driver
+	Sx1276<SpiMaster1,SpiCs> loraModem;
+
+	// Initialize the modem
+	RF_CALL_BLOCKING(loraModem.initialize());
+
+	// Set Modulation Parameters
+	RF_CALL_BLOCKING(loraModem.setModemParams(sx1276::Bandwidth::BW_7,
+											  sx1276::SpreadingFactor::SF_8,
+											  sx1276::CodingRate::CR_4_8,
+											  false,
+											  false));
+	// Set Carrier Frequency
+	RF_CALL_BLOCKING(loraModem.setCarrierFrequency(433.920_MHz));
+
+	// Enable the continous listening mode
+	RF_CALL_BLOCKING(loraModem.enableListening());
+
+	//the variable to hold the counter transmitted by the tx example
+	uint32_t rxCounter(0);
+
+	while (true)
+	{
+		//check the modem if new data is available and read it
+		uint8_t bytesReceived = RF_CALL_BLOCKING(loraModem.readPacket(reinterpret_cast<uint8_t*>(&rxCounter),4));
+		if(bytesReceived > 0)
+		{
+			int8_t snr = RF_CALL_BLOCKING(loraModem.getPacketSnr());
+
+			//dirty fixed point numbers
+			uint8_t snr_dec = (snr & 0x03) * 25;
+			snr = snr >> 2;
+
+			int16_t rssi = RF_CALL_BLOCKING(loraModem.getPacketRssi());
+
+			MODM_LOG_DEBUG << "Received Message" << modm::endl;
+			MODM_LOG_DEBUG << "Counter Value: " << rxCounter << modm::endl;
+			MODM_LOG_DEBUG << "SNR: "<< snr <<"."<< snr_dec << " dB" << modm::endl;
+			MODM_LOG_DEBUG << "RSSI: "<< rssi << " dBm" << modm::endl;
+			MODM_LOG_DEBUG << modm::endl;
+		}
+		//check for new data every 100ms
+		modm::delay(100ms);
+	}
+
+	return 0;
+}

examples/nucleo_f411re/sx1276_rx/project.xml

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+<library>
+  <extends>modm:nucleo-f411re</extends>
+  <options>
+    <option name="modm:build:build.path">../../../build/nucleo_f411re/sx1276_rx</option>
+  </options>
+  <modules>
+    <module>modm:build:scons</module>
+    <module>modm:platform:spi:1</module>
+    <module>modm:driver:sx1276</module>
+  </modules>
+</library>

examples/nucleo_f411re/sx1276_tx/main.cpp

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+/*
+ * Copyright (c) 2020 Benjamin Carrick
+ *
+ * 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/radio/sx1276.hpp>
+
+using namespace Board;
+using namespace modm;
+
+int
+main()
+{
+	Board::initialize();
+
+	//RxTx selection on the mbed shield
+	using RxTx = Board::A4;
+
+	using SpiMosi = Board::D11;
+	using SpiMiso = Board::D12;
+	using SpiSck = Board::D13;
+	using SpiCs = Board::D10;
+
+	//Set the RF switch to Transmit
+	RxTx::setOutput();
+	RxTx::set();
+
+	//Initialize the SPI
+	SpiCs::setOutput();
+	SpiCs::set();
+
+	SpiMaster1::connect<SpiSck::Sck, SpiMosi::Mosi, SpiMiso::Miso>();
+	SpiMaster1::initialize<Board::SystemClock, 1500_kHz>();
+
+	// Create an instance of the driver
+	Sx1276<SpiMaster1,SpiCs> loraModem;
+
+	// Initialize the modem
+	RF_CALL_BLOCKING(loraModem.initialize());
+
+	// Set Modulation Parameters
+	RF_CALL_BLOCKING(loraModem.setModemParams(sx1276::Bandwidth::BW_7,
+											  sx1276::SpreadingFactor::SF_8,
+											  sx1276::CodingRate::CR_4_8,
+											  false,
+											  false));
+	// Set Carrier Frequency
+	RF_CALL_BLOCKING(loraModem.setCarrierFrequency(433.920_MHz));
+
+	//The message to be sent
+	uint32_t counter(0);
+
+	while (true)
+	{
+		MODM_LOG_INFO << "Trasmitting Message " << counter << modm::endl;
+		RF_CALL_BLOCKING(loraModem.transmit(reinterpret_cast<uint8_t*>(&counter),4));
+		counter++;
+		modm::delay(1000ms);
+	}
+
+	return 0;
+}

examples/nucleo_f411re/sx1276_tx/project.xml

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+<library>
+  <extends>modm:nucleo-f411re</extends>
+  <options>
+    <option name="modm:build:build.path">../../../build/nucleo_f411re/sx1276_tx</option>
+  </options>
+  <modules>
+    <module>modm:build:scons</module>
+    <module>modm:platform:spi:1</module>
+    <module>modm:driver:sx1276</module>
+  </modules>
+</library>