119 lines
2.7 KiB
C++
119 lines
2.7 KiB
C++
// Copyright (c) Sandeep Mistry. All rights reserved.
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// Licensed under the MIT license. See LICENSE file in the project root for full license information.
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#ifndef LORA_H
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#define LORA_H
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#include <Arduino.h>
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#include <SPI.h>
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#ifdef ARDUINO_SAMD_MKRWAN1300
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#define LORA_DEFAULT_SPI SPI1
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#define LORA_DEFAULT_SPI_FREQUENCY 250000
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#define LORA_DEFAULT_SS_PIN LORA_IRQ_DUMB
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#define LORA_DEFAULT_RESET_PIN -1
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#define LORA_DEFAULT_DIO0_PIN -1
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#else
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#define LORA_DEFAULT_SPI SPI
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#define LORA_DEFAULT_SPI_FREQUENCY 8E6
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#define LORA_DEFAULT_SS_PIN 10
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#define LORA_DEFAULT_RESET_PIN 9
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#define LORA_DEFAULT_DIO0_PIN 2
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#endif
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#define PA_OUTPUT_RFO_PIN 0
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#define PA_OUTPUT_PA_BOOST_PIN 1
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class LoRaClass : public Stream {
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public:
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LoRaClass();
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int begin(long frequency);
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void end();
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int beginPacket(int implicitHeader = false);
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int endPacket(bool async = false);
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int parsePacket(int size = 0);
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int packetRssi();
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float packetSnr();
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long packetFrequencyError();
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// from Print
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virtual size_t write(uint8_t byte);
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virtual size_t write(const uint8_t *buffer, size_t size);
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// from Stream
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virtual int available();
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virtual int read();
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virtual int peek();
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virtual void flush();
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#ifndef ARDUINO_SAMD_MKRWAN1300
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void onReceive(void(*callback)(int));
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void receive(int size = 0);
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#endif
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void idle();
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void sleep();
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void setTxPower(int level, int outputPin = PA_OUTPUT_PA_BOOST_PIN);
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void setFrequency(long frequency);
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void setSpreadingFactor(int sf);
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void setSignalBandwidth(long sbw);
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void setCodingRate4(int denominator);
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void setPreambleLength(long length);
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void setSyncWord(int sw);
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void enableCrc();
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void disableCrc();
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void enableInvertIQ();
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void disableInvertIQ();
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void setOCP(uint8_t mA); // Over Current Protection control
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// deprecated
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void crc() { enableCrc(); }
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void noCrc() { disableCrc(); }
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byte random();
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void setPins(int ss = LORA_DEFAULT_SS_PIN, int reset = LORA_DEFAULT_RESET_PIN, int dio0 = LORA_DEFAULT_DIO0_PIN);
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void setSPI(SPIClass& spi);
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void setSPIFrequency(uint32_t frequency);
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void dumpRegisters(Stream& out);
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private:
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void explicitHeaderMode();
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void implicitHeaderMode();
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void handleDio0Rise();
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bool isTransmitting();
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int getSpreadingFactor();
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long getSignalBandwidth();
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void setLdoFlag();
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uint8_t readRegister(uint8_t address);
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void writeRegister(uint8_t address, uint8_t value);
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uint8_t singleTransfer(uint8_t address, uint8_t value);
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static void onDio0Rise();
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private:
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SPISettings _spiSettings;
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SPIClass* _spi;
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int _ss;
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int _reset;
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int _dio0;
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long _frequency;
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int _packetIndex;
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int _implicitHeaderMode;
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void (*_onReceive)(int);
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};
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extern LoRaClass LoRa;
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#endif
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