RNode_Firmware/sx127x.h

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// Copyright (c) Sandeep Mistry. All rights reserved.
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// Licensed under the MIT license.
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// Modifications and additions copyright 2023 by Mark Qvist
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// Obviously still under the MIT license.
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#ifndef SX1276_H
#define SX1276_H
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#include <Arduino.h>
#include <SPI.h>
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#include "Modem.h"
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#define LORA_DEFAULT_SS_PIN 10
#define LORA_DEFAULT_RESET_PIN 9
#define LORA_DEFAULT_DIO0_PIN 2
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#define LORA_DEFAULT_BUSY_PIN -1
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#define PA_OUTPUT_RFO_PIN 0
#define PA_OUTPUT_PA_BOOST_PIN 1
#define RSSI_OFFSET 157
class sx127x : public Stream {
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public:
sx127x();
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int begin(long frequency);
void end();
int beginPacket(int implicitHeader = false);
int endPacket();
int parsePacket(int size = 0);
int packetRssi();
int currentRssi();
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uint8_t packetRssiRaw();
uint8_t currentRssiRaw();
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uint8_t packetSnrRaw();
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float packetSnr();
long packetFrequencyError();
// from Print
virtual size_t write(uint8_t byte);
virtual size_t write(const uint8_t *buffer, size_t size);
// from Stream
virtual int available();
virtual int read();
virtual int peek();
virtual void flush();
void onReceive(void(*callback)(int));
void receive(int size = 0);
void idle();
void sleep();
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bool preInit();
uint8_t getTxPower();
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void setTxPower(int level, int outputPin = PA_OUTPUT_PA_BOOST_PIN);
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uint32_t getFrequency();
void setFrequency(unsigned long frequency);
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void setSpreadingFactor(int sf);
long getSignalBandwidth();
void setSignalBandwidth(long sbw);
void setCodingRate4(int denominator);
void setPreambleLength(long length);
void setSyncWord(uint8_t sw);
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uint8_t modemStatus();
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void enableCrc();
void disableCrc();
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void enableTCXO();
void disableTCXO();
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byte random();
void setPins(int ss = LORA_DEFAULT_SS_PIN, int reset = LORA_DEFAULT_RESET_PIN, int dio0 = LORA_DEFAULT_DIO0_PIN, int busy = LORA_DEFAULT_BUSY_PIN);
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void setSPIFrequency(uint32_t frequency);
void dumpRegisters(Stream& out);
private:
void explicitHeaderMode();
void implicitHeaderMode();
void handleDio0Rise();
uint8_t readRegister(uint8_t address);
void writeRegister(uint8_t address, uint8_t value);
uint8_t singleTransfer(uint8_t address, uint8_t value);
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static void onDio0Rise();
void handleLowDataRate();
void optimizeModemSensitivity();
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private:
SPISettings _spiSettings;
int _ss;
int _reset;
int _dio0;
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int _busy;
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long _frequency;
int _packetIndex;
int _implicitHeaderMode;
bool _preinit_done;
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void (*_onReceive)(int);
};
extern sx127x sx127x_modem;
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#endif