LoRa : InvalidMIC With Rfm95w + Arduino Pro Mini

Hello I try to connect a gateway with a rfm95w + arduino pro mini (3.3v, 8MHz). But I have an error on the gateway (here, gateway objenious : connection in OTAA) : "Erreur : InvalidMIC" like on the image Capture du 2022-03-30 12-07-071200×451 62.8 KB

On the image, you can see also a test with an mkrwan1310, with the same APPEUI (70B3D57ED003F650), DEVEUI(A8610A3434387D10), APPKEY(91CAB8E692EE311F5FA271A0F9E03980).

I give you my code for the rfm95w version :

#include <lmic.h> #include <hal/hal.h> #include <SPI.h> // // For normal use, we require that you edit the sketch to replace FILLMEIN // with values assigned by the TTN console. However, for regression tests, // we want to be able to compile these scripts. The regression tests define // COMPILE_REGRESSION_TEST, and in that case we define FILLMEIN to a non- // working but innocuous value. // // This EUI must be in little-endian format, so least-significant-byte // first. When copying an EUI from ttnctl output, this means to reverse // the bytes. For TTN issued EUIs the last bytes should be 0xD5, 0xB3, // 0x70. static const u1_t PROGMEM APPEUI[8]={0x50,0xF6,0x03,0xD0,0x7E,0xD5,0xB3,0x70}; void os_getArtEui (u1_t* buf) { memcpy_P(buf, APPEUI, 8);} // This should also be in little endian format, see above. static const u1_t PROGMEM DEVEUI[8]={0x10,0x7D,0x38,0x34,0x34,0x0A,0x61,0xA8}; void os_getDevEui (u1_t* buf) { memcpy_P(buf, DEVEUI, 8);} // This key should be in big endian format (or, since it is not really a // number but a block of memory, endianness does not really apply). In // practice, a key taken from ttnctl can be copied as-is. static const u1_t PROGMEM APPKEY[16] = { 0x91,0xCA,0xB8,0xE6,0x92,0xEE,0x31,0x1F,0x5F,0xA2,0x71,0xA0,0xF9,0xE0,0x39,0x80 }; void os_getDevKey (u1_t* buf) { memcpy_P(buf, APPKEY, 16);} static uint8_t mydata[10] = {0x00,0x01,0x01,0x49,0x75,0x39,0x03,0xb0,0x4e,0x21}; static osjob_t sendjob; // Schedule TX every this many seconds (might become longer due to duty // cycle limitations). const unsigned TX_INTERVAL = 60; // Pin mapping const lmic_pinmap lmic_pins = { .nss = 6, .rxtx = LMIC_UNUSED_PIN, .rst = 5, .dio = {3, 4, LMIC_UNUSED_PIN}, }; void printHex2(unsigned v) { v &= 0xff; if (v < 16) Serial.print('0'); Serial.print(v, HEX); } void onEvent (ev_t ev) { Serial.print(os_getTime()); Serial.print(": "); switch(ev) { case EV_SCAN_TIMEOUT: Serial.println(F("EV_SCAN_TIMEOUT")); break; case EV_BEACON_FOUND: Serial.println(F("EV_BEACON_FOUND")); break; case EV_BEACON_MISSED: Serial.println(F("EV_BEACON_MISSED")); break; case EV_BEACON_TRACKED: Serial.println(F("EV_BEACON_TRACKED")); break; case EV_JOINING: Serial.println(F("EV_JOINING")); break; case EV_JOINED: Serial.println(F("EV_JOINED")); { u4_t netid = 0; devaddr_t devaddr = 0; u1_t nwkKey[16]; u1_t artKey[16]; LMIC_getSessionKeys(&netid, &devaddr, nwkKey, artKey); Serial.print("netid: "); Serial.println(netid, DEC); Serial.print("devaddr: "); Serial.println(devaddr, HEX); Serial.print("AppSKey: "); for (size_t i=0; i<sizeof(artKey); ++i) { if (i != 0) Serial.print("-"); printHex2(artKey[i]); } Serial.println(""); Serial.print("NwkSKey: "); for (size_t i=0; i<sizeof(nwkKey); ++i) { if (i != 0) Serial.print("-"); printHex2(nwkKey[i]); } Serial.println(); } // Disable link check validation (automatically enabled // during join, but because slow data rates change max TX // size, we don't use it in this example. LMIC_setLinkCheckMode(0); break; /* || This event is defined but not used in the code. No || point in wasting codespace on it. || || case EV_RFU1: || Serial.println(F("EV_RFU1")); || break; */ case EV_JOIN_FAILED: Serial.println(F("EV_JOIN_FAILED")); break; case EV_REJOIN_FAILED: Serial.println(F("EV_REJOIN_FAILED")); break; case EV_TXCOMPLETE: Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)")); if (LMIC.txrxFlags & TXRX_ACK) Serial.println(F("Received ack")); if (LMIC.dataLen) { Serial.print(F("Received ")); Serial.print(LMIC.dataLen); Serial.println(F(" bytes of payload")); } // Schedule next transmission os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send); break; case EV_LOST_TSYNC: Serial.println(F("EV_LOST_TSYNC")); break; case EV_RESET: Serial.println(F("EV_RESET")); break; case EV_RXCOMPLETE: // data received in ping slot Serial.println(F("EV_RXCOMPLETE")); break; case EV_LINK_DEAD: Serial.println(F("EV_LINK_DEAD")); break; case EV_LINK_ALIVE: Serial.println(F("EV_LINK_ALIVE")); break; /* || This event is defined but not used in the code. No || point in wasting codespace on it. || || case EV_SCAN_FOUND: || Serial.println(F("EV_SCAN_FOUND")); || break; */ case EV_TXSTART: Serial.println(F("EV_TXSTART")); break; case EV_TXCANCELED: Serial.println(F("EV_TXCANCELED")); break; case EV_RXSTART: /* do not print anything -- it wrecks timing */ break; case EV_JOIN_TXCOMPLETE: Serial.println(F("EV_JOIN_TXCOMPLETE: no JoinAccept")); break; default: Serial.print(F("Unknown event: ")); Serial.println((unsigned) ev); break; } } void do_send(osjob_t* j){ // Check if there is not a current TX/RX job running if (LMIC.opmode & OP_TXRXPEND) { Serial.println(F("OP_TXRXPEND, not sending")); } else { // Prepare upstream data transmission at the next possible time. LMIC_setTxData2(1, mydata, sizeof(mydata)-1, 0); Serial.println(F("Packet queued")); } // Next TX is scheduled after TX_COMPLETE event. } void setup() { Serial.begin(115200); delay(2000); Serial.println(F("Starting")); // LMIC init os_init(); // Reset the MAC state. Session and pending data transfers will be discarded. LMIC_reset(); LMIC_setClockError(MAX_CLOCK_ERROR * 2 / 100); LMIC_setupChannel(0, 868100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band LMIC_setupChannel(1, 868300000, DR_RANGE_MAP(DR_SF12, DR_SF7B), BAND_CENTI); // g-band LMIC_setupChannel(2, 868500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band LMIC_setupChannel(3, 867100000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band LMIC_setupChannel(4, 867300000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band LMIC_setupChannel(5, 867500000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band LMIC_setupChannel(6, 867700000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band LMIC_setupChannel(7, 867900000, DR_RANGE_MAP(DR_SF12, DR_SF7), BAND_CENTI); // g-band LMIC_setupChannel(8, 868800000, DR_RANGE_MAP(DR_FSK, DR_FSK), BAND_MILLI); // g2-band LMIC_setLinkCheckMode(0); LMIC.dn2Dr = SF9; LMIC_setDrTxpow(DR_SF7,14); // Start job (sending automatically starts OTAA too) do_send(&sendjob); } void loop() { os_runloop_once(); }

On the monitor, I have :

12:05:52.511 -> Starting 12:05:52.544 -> Packet queued 12:05:52.577 -> 127632: EV_JOINING 12:05:53.903 -> 211858: EV_TXSTART 12:06:00.232 -> 605673: EV_JOIN_TXCOMPLETE: no JoinAccept

Do you have an idea of the problem ? Thanks !!!