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158 lines
3.9 KiB
158 lines
3.9 KiB
/*********************************************************************************
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*
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* lora_aprs_node_pico is a LoRa APRS KISS modem with additional PE1RXF telemetry
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* capabilities. It runs on a Raspberry Pi Pico.
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*
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* (C)2023 M.T. Konstapel https://meezenest.nl/mees
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*
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* This file is part of lora_aprs_node_pico.
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*
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* lora_aprs_node_pico is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* lora_aprs_node_pico is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with lora_aprs_node_pico. If not, see <https://www.gnu.org/licenses/>.
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*
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**********************************************************************************/
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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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#include "pico/stdlib.h"
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#include "pico/binary_info.h"
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#include "hardware/gpio.h"
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#include "hardware/spi.h"
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#include "string.h"
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#include "Print.h"
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#define PIN_MISO 16
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#define PIN_CS 8
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#define PIN_SCK 18
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#define PIN_MOSI 19
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#define SPI_PORT spi0
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#define READ_BIT 0x80
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#define LORA_DEFAULT_SPI spi0
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#define LORA_DEFAULT_SPI_FREQUENCY 8E6
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#define LORA_DEFAULT_SS_PIN 8
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#define LORA_DEFAULT_RESET_PIN 11
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#define LORA_DEFAULT_DIO0_PIN 10
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#define LORA_DEFAULT_DIO1_PIN 9
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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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static void __empty();
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//class LoRaClass : public Stream {
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class LoRaClass : public Print {
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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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int rssi();
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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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void onReceive(void(*callback)(int));
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void onTxDone(void(*callback)());
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void receive(int size = 0);
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void idle();
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void sleep();
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// size_t print(const char* c);
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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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void setGain(uint8_t gain); // Set LNA gain
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// deprecated
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void crc() { enableCrc(); }
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void noCrc() { disableCrc(); }
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uint8_t 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(spi_inst_t& spi);
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void setSPIFrequency(uint32_t frequency);
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void dumpRegisters();
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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(uint, uint32_t);
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private:
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// SPISettings _spiSettings;
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spi_inst_t* _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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void (*_onTxDone)();
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};
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extern LoRaClass LoRa;
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// #endif
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