#include // needed for PlatformIO #include #if defined(NRF52_PLATFORM) #include #elif defined(ESP32) #include #endif #define RADIOLIB_STATIC_ONLY 1 #include #include #include #include #include #include #include #include #include #include /* ------------------------------ Config -------------------------------- */ #ifndef FIRMWARE_BUILD_DATE #define FIRMWARE_BUILD_DATE "9 Mar 2025" #endif #ifndef FIRMWARE_VERSION #define FIRMWARE_VERSION "v1.2.2" #endif #ifndef LORA_FREQ #define LORA_FREQ 915.0 #endif #ifndef LORA_BW #define LORA_BW 250 #endif #ifndef LORA_SF #define LORA_SF 10 #endif #ifndef LORA_CR #define LORA_CR 5 #endif #ifndef LORA_TX_POWER #define LORA_TX_POWER 20 #endif #ifndef ADVERT_NAME #define ADVERT_NAME "repeater" #endif #ifndef ADVERT_LAT #define ADVERT_LAT 0.0 #endif #ifndef ADVERT_LON #define ADVERT_LON 0.0 #endif #ifndef ADMIN_PASSWORD #define ADMIN_PASSWORD "password" #endif #if defined(HELTEC_LORA_V3) #include #include static HeltecV3Board board; #elif defined(HELTEC_LORA_V2) #include #include static HeltecV2Board board; #elif defined(ARDUINO_XIAO_ESP32C3) #include #include #include static XiaoC3Board board; #elif defined(SEEED_XIAO_S3) || defined(LILYGO_T3S3) #include #include static ESP32Board board; #elif defined(LILYGO_TLORA) #include #include static LilyGoTLoraBoard board; #elif defined(STATION_G2) #include #include static StationG2Board board; #elif defined(RAK_4631) #include #include static RAK4631Board board; #elif defined(HELTEC_T114) #include #include static T114Board board; #elif defined(LILYGO_TECHO) #include #include static TechoBoard board; #else #error "need to provide a 'board' object" #endif #ifdef DISPLAY_CLASS #include static DISPLAY_CLASS display; #include "UITask.h" static UITask ui_task(display); #endif #define PACKET_LOG_FILE "/packet_log" /* ------------------------------ Code -------------------------------- */ #define CMD_GET_STATUS 0x01 #define RESP_SERVER_LOGIN_OK 0 // response to ANON_REQ struct RepeaterStats { uint16_t batt_milli_volts; uint16_t curr_tx_queue_len; uint16_t curr_free_queue_len; int16_t last_rssi; uint32_t n_packets_recv; uint32_t n_packets_sent; uint32_t total_air_time_secs; uint32_t total_up_time_secs; uint32_t n_sent_flood, n_sent_direct; uint32_t n_recv_flood, n_recv_direct; uint16_t n_full_events; int16_t last_snr; // x 4 uint16_t n_direct_dups, n_flood_dups; }; struct ClientInfo { mesh::Identity id; uint32_t last_timestamp, last_activity; uint8_t secret[PUB_KEY_SIZE]; bool is_admin; int8_t out_path_len; uint8_t out_path[MAX_PATH_SIZE]; }; #define MAX_CLIENTS 4 // NOTE: need to space the ACK and the reply text apart (in CLI) #define CLI_REPLY_DELAY_MILLIS 1500 class MyMesh : public mesh::Mesh, public CommonCLICallbacks { RadioLibWrapper* my_radio; FILESYSTEM* _fs; RADIO_CLASS* _phy; mesh::MainBoard* _board; unsigned long next_local_advert; bool _logging; NodePrefs _prefs; CommonCLI _cli; uint8_t reply_data[MAX_PACKET_PAYLOAD]; ClientInfo known_clients[MAX_CLIENTS]; ClientInfo* putClient(const mesh::Identity& id) { uint32_t min_time = 0xFFFFFFFF; ClientInfo* oldest = &known_clients[0]; for (int i = 0; i < MAX_CLIENTS; i++) { if (known_clients[i].last_activity < min_time) { oldest = &known_clients[i]; min_time = oldest->last_activity; } if (id.matches(known_clients[i].id)) return &known_clients[i]; // already known } oldest->id = id; oldest->out_path_len = -1; // initially out_path is unknown oldest->last_timestamp = 0; self_id.calcSharedSecret(oldest->secret, id); // calc ECDH shared secret return oldest; } int handleRequest(ClientInfo* sender, uint8_t* payload, size_t payload_len) { uint32_t now = getRTCClock()->getCurrentTimeUnique(); memcpy(reply_data, &now, 4); // response packets always prefixed with timestamp switch (payload[0]) { case CMD_GET_STATUS: { // guests can also access this now RepeaterStats stats; stats.batt_milli_volts = board.getBattMilliVolts(); stats.curr_tx_queue_len = _mgr->getOutboundCount(); stats.curr_free_queue_len = _mgr->getFreeCount(); stats.last_rssi = (int16_t) my_radio->getLastRSSI(); stats.n_packets_recv = my_radio->getPacketsRecv(); stats.n_packets_sent = my_radio->getPacketsSent(); stats.total_air_time_secs = getTotalAirTime() / 1000; stats.total_up_time_secs = _ms->getMillis() / 1000; stats.n_sent_flood = getNumSentFlood(); stats.n_sent_direct = getNumSentDirect(); stats.n_recv_flood = getNumRecvFlood(); stats.n_recv_direct = getNumRecvDirect(); stats.n_full_events = getNumFullEvents(); stats.last_snr = (int16_t)(my_radio->getLastSNR() * 4); stats.n_direct_dups = ((SimpleMeshTables *)getTables())->getNumDirectDups(); stats.n_flood_dups = ((SimpleMeshTables *)getTables())->getNumFloodDups(); memcpy(&reply_data[4], &stats, sizeof(stats)); return 4 + sizeof(stats); // reply_len } } // unknown command return 0; // reply_len } mesh::Packet* createSelfAdvert() { uint8_t app_data[MAX_ADVERT_DATA_SIZE]; uint8_t app_data_len; { AdvertDataBuilder builder(ADV_TYPE_REPEATER, _prefs.node_name, _prefs.node_lat, _prefs.node_lon); app_data_len = builder.encodeTo(app_data); } return createAdvert(self_id, app_data, app_data_len); } File openAppend(const char* fname) { #if defined(NRF52_PLATFORM) return _fs->open(fname, FILE_O_WRITE); #else return _fs->open(fname, "a", true); #endif } protected: float getAirtimeBudgetFactor() const override { return _prefs.airtime_factor; } bool allowPacketForward(const mesh::Packet* packet) override { return !_prefs.disable_fwd; } const char* getLogDateTime() override { static char tmp[32]; uint32_t now = getRTCClock()->getCurrentTime(); DateTime dt = DateTime(now); sprintf(tmp, "%02d:%02d:%02d - %d/%d/%d U", dt.hour(), dt.minute(), dt.second(), dt.day(), dt.month(), dt.year()); return tmp; } void logRxRaw(float snr, float rssi, const uint8_t raw[], int len) override { #if MESH_PACKET_LOGGING Serial.print(getLogDateTime()); Serial.print(" RAW: "); mesh::Utils::printHex(Serial, raw, len); Serial.println(); #endif } void logRx(mesh::Packet* pkt, int len, float score) override { if (_logging) { File f = openAppend(PACKET_LOG_FILE); if (f) { f.print(getLogDateTime()); f.printf(": RX, len=%d (type=%d, route=%s, payload_len=%d) SNR=%d RSSI=%d score=%d", len, pkt->getPayloadType(), pkt->isRouteDirect() ? "D" : "F", pkt->payload_len, (int)_radio->getLastSNR(), (int)_radio->getLastRSSI(), (int)(score*1000)); if (pkt->getPayloadType() == PAYLOAD_TYPE_PATH || pkt->getPayloadType() == PAYLOAD_TYPE_REQ || pkt->getPayloadType() == PAYLOAD_TYPE_RESPONSE || pkt->getPayloadType() == PAYLOAD_TYPE_TXT_MSG) { f.printf(" [%02X -> %02X]\n", (uint32_t)pkt->payload[1], (uint32_t)pkt->payload[0]); } else { f.printf("\n"); } f.close(); } } } void logTx(mesh::Packet* pkt, int len) override { if (_logging) { File f = openAppend(PACKET_LOG_FILE); if (f) { f.print(getLogDateTime()); f.printf(": TX, len=%d (type=%d, route=%s, payload_len=%d)", len, pkt->getPayloadType(), pkt->isRouteDirect() ? "D" : "F", pkt->payload_len); if (pkt->getPayloadType() == PAYLOAD_TYPE_PATH || pkt->getPayloadType() == PAYLOAD_TYPE_REQ || pkt->getPayloadType() == PAYLOAD_TYPE_RESPONSE || pkt->getPayloadType() == PAYLOAD_TYPE_TXT_MSG) { f.printf(" [%02X -> %02X]\n", (uint32_t)pkt->payload[1], (uint32_t)pkt->payload[0]); } else { f.printf("\n"); } f.close(); } } } void logTxFail(mesh::Packet* pkt, int len) override { if (_logging) { File f = openAppend(PACKET_LOG_FILE); if (f) { f.print(getLogDateTime()); f.printf(": TX FAIL!, len=%d (type=%d, route=%s, payload_len=%d)\n", len, pkt->getPayloadType(), pkt->isRouteDirect() ? "D" : "F", pkt->payload_len); f.close(); } } } int calcRxDelay(float score, uint32_t air_time) const override { if (_prefs.rx_delay_base <= 0.0f) return 0; return (int) ((pow(_prefs.rx_delay_base, 0.85f - score) - 1.0) * air_time); } uint32_t getRetransmitDelay(const mesh::Packet* packet) override { uint32_t t = (_radio->getEstAirtimeFor(packet->path_len + packet->payload_len + 2) * _prefs.tx_delay_factor); return getRNG()->nextInt(0, 6)*t; } uint32_t getDirectRetransmitDelay(const mesh::Packet* packet) override { uint32_t t = (_radio->getEstAirtimeFor(packet->path_len + packet->payload_len + 2) * _prefs.direct_tx_delay_factor); return getRNG()->nextInt(0, 6)*t; } void onAnonDataRecv(mesh::Packet* packet, uint8_t type, const mesh::Identity& sender, uint8_t* data, size_t len) override { if (type == PAYLOAD_TYPE_ANON_REQ) { // received an initial request by a possible admin client (unknown at this stage) uint32_t timestamp; memcpy(×tamp, data, 4); bool is_admin; data[len] = 0; // ensure null terminator if (strcmp((char *) &data[4], _prefs.password) == 0) { // check for valid password is_admin = true; } else if (strcmp((char *) &data[4], _prefs.guest_password) == 0) { // check guest password is_admin = false; } else { #if MESH_DEBUG MESH_DEBUG_PRINTLN("Invalid password: %s", &data[4]); #endif return; } auto client = putClient(sender); // add to known clients (if not already known) if (timestamp <= client->last_timestamp) { MESH_DEBUG_PRINTLN("Possible login replay attack!"); return; // FATAL: client table is full -OR- replay attack } MESH_DEBUG_PRINTLN("Login success!"); client->last_timestamp = timestamp; client->last_activity = getRTCClock()->getCurrentTime(); client->is_admin = is_admin; uint32_t now = getRTCClock()->getCurrentTimeUnique(); memcpy(reply_data, &now, 4); // response packets always prefixed with timestamp #if 0 memcpy(&reply_data[4], "OK", 2); // legacy response #else reply_data[4] = RESP_SERVER_LOGIN_OK; reply_data[5] = 0; // NEW: recommended keep-alive interval (secs / 16) reply_data[6] = is_admin ? 1 : 0; reply_data[7] = 0; // FUTURE: reserved getRNG()->random(&reply_data[8], 4); // random blob to help packet-hash uniqueness #endif if (packet->isRouteFlood()) { // let this sender know path TO here, so they can use sendDirect(), and ALSO encode the response mesh::Packet* path = createPathReturn(sender, client->secret, packet->path, packet->path_len, PAYLOAD_TYPE_RESPONSE, reply_data, 12); if (path) sendFlood(path); } else { mesh::Packet* reply = createDatagram(PAYLOAD_TYPE_RESPONSE, sender, client->secret, reply_data, 12); if (reply) { if (client->out_path_len >= 0) { // we have an out_path, so send DIRECT sendDirect(reply, client->out_path, client->out_path_len); } else { sendFlood(reply); } } } } } int matching_peer_indexes[MAX_CLIENTS]; int searchPeersByHash(const uint8_t* hash) override { int n = 0; for (int i = 0; i < MAX_CLIENTS; i++) { if (known_clients[i].id.isHashMatch(hash)) { matching_peer_indexes[n++] = i; // store the INDEXES of matching contacts (for subsequent 'peer' methods) } } return n; } void getPeerSharedSecret(uint8_t* dest_secret, int peer_idx) override { int i = matching_peer_indexes[peer_idx]; if (i >= 0 && i < MAX_CLIENTS) { // lookup pre-calculated shared_secret memcpy(dest_secret, known_clients[i].secret, PUB_KEY_SIZE); } else { MESH_DEBUG_PRINTLN("getPeerSharedSecret: Invalid peer idx: %d", i); } } void onPeerDataRecv(mesh::Packet* packet, uint8_t type, int sender_idx, const uint8_t* secret, uint8_t* data, size_t len) override { int i = matching_peer_indexes[sender_idx]; if (i < 0 || i >= MAX_CLIENTS) { // get from our known_clients table (sender SHOULD already be known in this context) MESH_DEBUG_PRINTLN("onPeerDataRecv: invalid peer idx: %d", i); return; } auto client = &known_clients[i]; if (type == PAYLOAD_TYPE_REQ) { // request (from a Known admin client!) uint32_t timestamp; memcpy(×tamp, data, 4); if (timestamp > client->last_timestamp) { // prevent replay attacks int reply_len = handleRequest(client, &data[4], len - 4); if (reply_len == 0) return; // invalid command client->last_timestamp = timestamp; client->last_activity = getRTCClock()->getCurrentTime(); if (packet->isRouteFlood()) { // let this sender know path TO here, so they can use sendDirect(), and ALSO encode the response mesh::Packet* path = createPathReturn(client->id, secret, packet->path, packet->path_len, PAYLOAD_TYPE_RESPONSE, reply_data, reply_len); if (path) sendFlood(path); } else { mesh::Packet* reply = createDatagram(PAYLOAD_TYPE_RESPONSE, client->id, secret, reply_data, reply_len); if (reply) { if (client->out_path_len >= 0) { // we have an out_path, so send DIRECT sendDirect(reply, client->out_path, client->out_path_len); } else { sendFlood(reply); } } } } else { MESH_DEBUG_PRINTLN("onPeerDataRecv: possible replay attack detected"); } } else if (type == PAYLOAD_TYPE_TXT_MSG && len > 5 && client->is_admin) { // a CLI command uint32_t sender_timestamp; memcpy(&sender_timestamp, data, 4); // timestamp (by sender's RTC clock - which could be wrong) uint flags = (data[4] >> 2); // message attempt number, and other flags if (!(flags == TXT_TYPE_PLAIN || flags == TXT_TYPE_CLI_DATA)) { MESH_DEBUG_PRINTLN("onPeerDataRecv: unsupported text type received: flags=%02x", (uint32_t)flags); } else if (sender_timestamp >= client->last_timestamp) { // prevent replay attacks bool is_retry = (sender_timestamp == client->last_timestamp); client->last_timestamp = sender_timestamp; client->last_activity = getRTCClock()->getCurrentTime(); // len can be > original length, but 'text' will be padded with zeroes data[len] = 0; // need to make a C string again, with null terminator if (flags == TXT_TYPE_PLAIN) { // for legacy CLI, send Acks uint32_t ack_hash; // calc truncated hash of the message timestamp + text + sender pub_key, to prove to sender that we got it mesh::Utils::sha256((uint8_t *) &ack_hash, 4, data, 5 + strlen((char *)&data[5]), client->id.pub_key, PUB_KEY_SIZE); mesh::Packet* ack = createAck(ack_hash); if (ack) { if (client->out_path_len < 0) { sendFlood(ack); } else { sendDirect(ack, client->out_path, client->out_path_len); } } } uint8_t temp[166]; if (is_retry) { temp[0] = 0; } else { _cli.handleCommand(sender_timestamp, (const char *) &data[5], (char *) &temp[5]); } int text_len = strlen((char *) &temp[5]); if (text_len > 0) { uint32_t timestamp = getRTCClock()->getCurrentTimeUnique(); if (timestamp == sender_timestamp) { // WORKAROUND: the two timestamps need to be different, in the CLI view timestamp++; } memcpy(temp, ×tamp, 4); // mostly an extra blob to help make packet_hash unique temp[4] = (TXT_TYPE_CLI_DATA << 2); // NOTE: legacy was: TXT_TYPE_PLAIN auto reply = createDatagram(PAYLOAD_TYPE_TXT_MSG, client->id, secret, temp, 5 + text_len); if (reply) { if (client->out_path_len < 0) { sendFlood(reply, CLI_REPLY_DELAY_MILLIS); } else { sendDirect(reply, client->out_path, client->out_path_len, CLI_REPLY_DELAY_MILLIS); } } } } else { MESH_DEBUG_PRINTLN("onPeerDataRecv: possible replay attack detected"); } } } bool onPeerPathRecv(mesh::Packet* packet, int sender_idx, const uint8_t* secret, uint8_t* path, uint8_t path_len, uint8_t extra_type, uint8_t* extra, uint8_t extra_len) override { // TODO: prevent replay attacks int i = matching_peer_indexes[sender_idx]; if (i >= 0 && i < MAX_CLIENTS) { // get from our known_clients table (sender SHOULD already be known in this context) MESH_DEBUG_PRINTLN("PATH to client, path_len=%d", (uint32_t) path_len); auto client = &known_clients[i]; memcpy(client->out_path, path, client->out_path_len = path_len); // store a copy of path, for sendDirect() } else { MESH_DEBUG_PRINTLN("onPeerPathRecv: invalid peer idx: %d", i); } // NOTE: no reciprocal path send!! return false; } public: MyMesh(RADIO_CLASS& phy, mesh::MainBoard& board, RadioLibWrapper& radio, mesh::MillisecondClock& ms, mesh::RNG& rng, mesh::RTCClock& rtc, SimpleMeshTables& tables) : mesh::Mesh(radio, ms, rng, rtc, *new StaticPoolPacketManager(32), tables), _phy(&phy), _board(&board), _cli(board, this, &_prefs, this) { my_radio = &radio; memset(known_clients, 0, sizeof(known_clients)); next_local_advert = 0; _logging = false; // defaults memset(&_prefs, 0, sizeof(_prefs)); _prefs.airtime_factor = 1.0; // one half _prefs.rx_delay_base = 0.0f; // turn off by default, was 10.0; _prefs.tx_delay_factor = 0.5f; // was 0.25f StrHelper::strncpy(_prefs.node_name, ADVERT_NAME, sizeof(_prefs.node_name)); _prefs.node_lat = ADVERT_LAT; _prefs.node_lon = ADVERT_LON; StrHelper::strncpy(_prefs.password, ADMIN_PASSWORD, sizeof(_prefs.password)); _prefs.freq = LORA_FREQ; _prefs.sf = LORA_SF; _prefs.bw = LORA_BW; _prefs.cr = LORA_CR; _prefs.tx_power_dbm = LORA_TX_POWER; _prefs.advert_interval = 1; // default to 2 minutes for NEW installs } CommonCLI* getCLI() { return &_cli; } void begin(FILESYSTEM* fs) { mesh::Mesh::begin(); _fs = fs; // load persisted prefs _cli.loadPrefs(_fs); _phy->setFrequency(_prefs.freq); _phy->setSpreadingFactor(_prefs.sf); _phy->setBandwidth(_prefs.bw); _phy->setCodingRate(_prefs.cr); _phy->setOutputPower(_prefs.tx_power_dbm); updateAdvertTimer(); } const char* getFirmwareVer() override { return FIRMWARE_VERSION; } const char* getBuildDate() override { return FIRMWARE_BUILD_DATE; } const char* getNodeName() { return _prefs.node_name; } void savePrefs() override { _cli.savePrefs(_fs); } bool formatFileSystem() override { #if defined(NRF52_PLATFORM) return InternalFS.format(); #elif defined(ESP32) return SPIFFS.format(); #else #error "need to implement file system erase" return false; #endif } void sendSelfAdvertisement(int delay_millis) override { mesh::Packet* pkt = createSelfAdvert(); if (pkt) { sendFlood(pkt, delay_millis); } else { MESH_DEBUG_PRINTLN("ERROR: unable to create advertisement packet!"); } } void updateAdvertTimer() override { if (_prefs.advert_interval > 0) { // schedule local advert timer next_local_advert = futureMillis((uint32_t)_prefs.advert_interval * 2 * 60 * 1000); } else { next_local_advert = 0; // stop the timer } } void setLoggingOn(bool enable) override { _logging = enable; } void eraseLogFile() override { _fs->remove(PACKET_LOG_FILE); } void dumpLogFile() override { File f = _fs->open(PACKET_LOG_FILE); if (f) { while (f.available()) { int c = f.read(); if (c < 0) break; Serial.print((char)c); } f.close(); } } void setTxPower(uint8_t power_dbm) override { _phy->setOutputPower(power_dbm); } void loop() { mesh::Mesh::loop(); if (next_local_advert && millisHasNowPassed(next_local_advert)) { mesh::Packet* pkt = createSelfAdvert(); if (pkt) { sendZeroHop(pkt); } updateAdvertTimer(); // schedule next local advert } #ifdef DISPLAY_CLASS ui_task.loop(); #endif } }; #if defined(NRF52_PLATFORM) RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, SPI); #elif defined(LILYGO_TLORA) SPIClass spi; RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_0, P_LORA_RESET, P_LORA_DIO_1, spi); #elif defined(P_LORA_SCLK) SPIClass spi; RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, spi); #else RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY); #endif StdRNG fast_rng; SimpleMeshTables tables; #ifdef ESP32 ESP32RTCClock fallback_clock; #else VolatileRTCClock fallback_clock; #endif AutoDiscoverRTCClock rtc_clock(fallback_clock); MyMesh the_mesh(radio, board, *new WRAPPER_CLASS(radio, board), *new ArduinoMillis(), fast_rng, rtc_clock, tables); void halt() { while (1) ; } static char command[80]; void setup() { Serial.begin(115200); delay(1000); board.begin(); #ifdef ESP32 fallback_clock.begin(); #endif rtc_clock.begin(Wire); #ifdef SX126X_DIO3_TCXO_VOLTAGE float tcxo = SX126X_DIO3_TCXO_VOLTAGE; #else float tcxo = 1.6f; #endif #if defined(NRF52_PLATFORM) SPI.setPins(P_LORA_MISO, P_LORA_SCLK, P_LORA_MOSI); SPI.begin(); #elif defined(P_LORA_SCLK) spi.begin(P_LORA_SCLK, P_LORA_MISO, P_LORA_MOSI); #endif int status = radio.begin(LORA_FREQ, LORA_BW, LORA_SF, LORA_CR, RADIOLIB_SX126X_SYNC_WORD_PRIVATE, LORA_TX_POWER, 8, tcxo); if (status != RADIOLIB_ERR_NONE) { delay(5000); Serial.print("ERROR: radio init failed: "); Serial.println(status); halt(); } radio.setCRC(1); #ifdef SX126X_CURRENT_LIMIT radio.setCurrentLimit(SX126X_CURRENT_LIMIT); #endif #ifdef SX126X_DIO2_AS_RF_SWITCH radio.setDio2AsRfSwitch(SX126X_DIO2_AS_RF_SWITCH); #endif #ifdef SX126X_RX_BOOSTED_GAIN radio.setRxBoostedGainMode(SX126X_RX_BOOSTED_GAIN); #endif fast_rng.begin(radio.random(0x7FFFFFFF)); FILESYSTEM* fs; #if defined(NRF52_PLATFORM) InternalFS.begin(); fs = &InternalFS; IdentityStore store(InternalFS, ""); #elif defined(ESP32) SPIFFS.begin(true); fs = &SPIFFS; IdentityStore store(SPIFFS, "/identity"); #else #error "need to define filesystem" #endif if (!store.load("_main", the_mesh.self_id)) { MESH_DEBUG_PRINTLN("Generating new keypair"); RadioNoiseListener rng(radio); the_mesh.self_id = mesh::LocalIdentity(&rng); // create new random identity store.save("_main", the_mesh.self_id); } Serial.print("Repeater ID: "); mesh::Utils::printHex(Serial, the_mesh.self_id.pub_key, PUB_KEY_SIZE); Serial.println(); command[0] = 0; the_mesh.begin(fs); #ifdef DISPLAY_CLASS display.begin(); ui_task.begin(the_mesh.getNodeName(), FIRMWARE_BUILD_DATE); #endif // send out initial Advertisement to the mesh the_mesh.sendSelfAdvertisement(2000); } void loop() { int len = strlen(command); while (Serial.available() && len < sizeof(command)-1) { char c = Serial.read(); if (c != '\n') { command[len++] = c; command[len] = 0; } Serial.print(c); } if (len == sizeof(command)-1) { // command buffer full command[sizeof(command)-1] = '\r'; } if (len > 0 && command[len - 1] == '\r') { // received complete line command[len - 1] = 0; // replace newline with C string null terminator char reply[160]; the_mesh.getCLI()->handleCommand(0, command, reply); // NOTE: there is no sender_timestamp via serial! if (reply[0]) { Serial.print(" -> "); Serial.println(reply); } command[0] = 0; // reset command buffer } the_mesh.loop(); }