mirror of
https://github.com/meshcore-dev/MeshCore.git
synced 2026-04-20 22:13:47 +00:00
124 lines
3.7 KiB
C++
124 lines
3.7 KiB
C++
#pragma once
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#include <Arduino.h>
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#include <Identity.h>
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#include <Utils.h>
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#define KISS_FEND 0xC0
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#define KISS_FESC 0xDB
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#define KISS_TFEND 0xDC
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#define KISS_TFESC 0xDD
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#define KISS_MAX_FRAME_SIZE 512
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#define KISS_MAX_PACKET_SIZE 255
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#define CMD_DATA 0x00
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#define CMD_GET_IDENTITY 0x01
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#define CMD_GET_RANDOM 0x02
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#define CMD_VERIFY_SIGNATURE 0x03
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#define CMD_SIGN_DATA 0x04
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#define CMD_ENCRYPT_DATA 0x05
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#define CMD_DECRYPT_DATA 0x06
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#define CMD_KEY_EXCHANGE 0x07
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#define CMD_HASH 0x08
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#define CMD_SET_RADIO 0x09
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#define CMD_SET_TX_POWER 0x0A
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#define CMD_SET_SYNC_WORD 0x0B
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#define CMD_GET_RADIO 0x0C
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#define CMD_GET_TX_POWER 0x0D
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#define CMD_GET_SYNC_WORD 0x0E
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#define CMD_GET_VERSION 0x0F
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#define RESP_IDENTITY 0x11
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#define RESP_RANDOM 0x12
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#define RESP_VERIFY 0x13
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#define RESP_SIGNATURE 0x14
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#define RESP_ENCRYPTED 0x15
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#define RESP_DECRYPTED 0x16
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#define RESP_SHARED_SECRET 0x17
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#define RESP_HASH 0x18
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#define RESP_OK 0x19
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#define RESP_RADIO 0x1A
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#define RESP_TX_POWER 0x1B
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#define RESP_SYNC_WORD 0x1C
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#define RESP_VERSION 0x1D
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#define RESP_ERROR 0x1E
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#define RESP_TX_DONE 0x1F
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#define ERR_INVALID_LENGTH 0x01
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#define ERR_INVALID_PARAM 0x02
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#define ERR_NO_CALLBACK 0x03
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#define ERR_MAC_FAILED 0x04
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#define ERR_UNKNOWN_CMD 0x05
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#define ERR_ENCRYPT_FAILED 0x06
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#define KISS_FIRMWARE_VERSION 1
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typedef void (*SetRadioCallback)(float freq, float bw, uint8_t sf, uint8_t cr);
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typedef void (*SetTxPowerCallback)(uint8_t power);
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typedef void (*SetSyncWordCallback)(uint8_t syncWord);
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struct RadioConfig {
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uint32_t freq_hz;
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uint32_t bw_hz;
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uint8_t sf;
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uint8_t cr;
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uint8_t tx_power;
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uint8_t sync_word;
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};
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class KissModem {
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Stream& _serial;
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mesh::LocalIdentity& _identity;
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mesh::RNG& _rng;
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uint8_t _rx_buf[KISS_MAX_FRAME_SIZE];
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uint16_t _rx_len;
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bool _rx_escaped;
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bool _rx_active;
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uint8_t _pending_tx[KISS_MAX_PACKET_SIZE];
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uint16_t _pending_tx_len;
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bool _has_pending_tx;
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SetRadioCallback _setRadioCallback;
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SetTxPowerCallback _setTxPowerCallback;
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SetSyncWordCallback _setSyncWordCallback;
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RadioConfig _config;
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void writeByte(uint8_t b);
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void writeFrame(uint8_t cmd, const uint8_t* data, uint16_t len);
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void writeErrorFrame(uint8_t error_code);
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void processFrame();
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void handleGetIdentity();
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void handleGetRandom(const uint8_t* data, uint16_t len);
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void handleVerifySignature(const uint8_t* data, uint16_t len);
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void handleSignData(const uint8_t* data, uint16_t len);
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void handleEncryptData(const uint8_t* data, uint16_t len);
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void handleDecryptData(const uint8_t* data, uint16_t len);
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void handleKeyExchange(const uint8_t* data, uint16_t len);
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void handleHash(const uint8_t* data, uint16_t len);
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void handleSetRadio(const uint8_t* data, uint16_t len);
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void handleSetTxPower(const uint8_t* data, uint16_t len);
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void handleSetSyncWord(const uint8_t* data, uint16_t len);
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void handleGetRadio();
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void handleGetTxPower();
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void handleGetSyncWord();
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void handleGetVersion();
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public:
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KissModem(Stream& serial, mesh::LocalIdentity& identity, mesh::RNG& rng);
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void begin();
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void loop();
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void setRadioCallback(SetRadioCallback cb) { _setRadioCallback = cb; }
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void setTxPowerCallback(SetTxPowerCallback cb) { _setTxPowerCallback = cb; }
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void setSyncWordCallback(SetSyncWordCallback cb) { _setSyncWordCallback = cb; }
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bool getPacketToSend(uint8_t* packet, uint16_t* len);
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void onPacketReceived(int8_t snr, int8_t rssi, const uint8_t* packet, uint16_t len);
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void onTxComplete(bool success);
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};
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