RAK7243C gateway not connecting with whisper node LoRa in ABP mode

Hi All I am using RAK7243C in AS-1 region which is successfully able to connect with The Things Network (TTN) cloud. However it’s not showing any live data coming from my Node, I can’t observe anything relevant to my node in gateway syslog as well. Can someone please help, below are the details:

I made an application with information as in the picture below in TTN:

Now, I am using whisper Node LoRa (Atmega328 + RFM95) to publish LoRa data. The library I am using is MCCI_LoRaWAN_LMIC_library-4.1.1. I had made an Arduino program as pasted below with its serial output mentioned after it:

Arduino Program:

 * Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman
 * Copyright (c) 2018 Terry Moore, MCCI
 * Permission is hereby granted, free of charge, to anyone
 * obtaining a copy of this document and accompanying files,
 * to do whatever they want with them without any restriction,
 * including, but not limited to, copying, modification and redistribution.
 * This example sends a valid LoRaWAN packet with payload "Hello,
 * world!", using frequency and encryption settings matching those of
 * the The Things Network.
 * This uses ABP (Activation-by-personalisation), where a DevAddr and
 * Session keys are preconfigured (unlike OTAA, where a DevEUI and
 * application key is configured, while the DevAddr and session keys are
 * assigned/generated in the over-the-air-activation procedure).
 * Note: LoRaWAN per sub-band duty-cycle limitation is enforced (1% in
 * g1, 0.1% in g2), but not the TTN fair usage policy (which is probably
 * violated by this sketch when left running for longer)!
 * To use this sketch, first register your application and device with
 * the things network, to set or generate a DevAddr, NwkSKey and
 * AppSKey. Each device should have their own unique values for these
 * fields.
 * Do not forget to define the radio type correctly in
 * arduino-lmic/project_config/lmic_project_config.h or from your BOARDS.txt.

 // References:
 // [feather] adafruit-feather-m0-radio-with-lora-module.pdf

#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.
# define FILLMEIN 0
# warning "You must replace the values marked FILLMEIN with real values from the TTN control panel!"
# define FILLMEIN (#dont edit this, edit the lines that use FILLMEIN)

// LoRaWAN NwkSKey, network session key
// This should be in big-endian (aka msb).
static const PROGMEM u1_t NWKSKEY[16] = {0xAF,0x2C,0xA5,0x74,0x91,0x9B,0x4C,0x52,0x89,0xE0,0xF3,0x7E,0x98,0x61,0x6D,0x47};

// LoRaWAN AppSKey, application session key
// This should also be in big-endian (aka msb).
static const u1_t PROGMEM APPSKEY[16] = {0xCF,0x7E,0x36,0x31,0x97,0x16,0x8A,0x54,0x7F,0xC2,0xA9,0xF2,0xEC,0x72,0x36,0xC9};

// LoRaWAN end-device address (DevAddr)
// See http://thethingsnetwork.org/wiki/AddressSpace
// The library converts the address to network byte order as needed, so this should be in big-endian (aka msb) too.
static const u4_t DEVADDR = 0x260DAE15 ; // <-- Change this address for every node!

// These callbacks are only used in over-the-air activation, so they are
// left empty here (we cannot leave them out completely unless
// DISABLE_JOIN is set in arduino-lmic/project_config/lmic_project_config.h,
// otherwise the linker will complain).
void os_getArtEui (u1_t* buf) { }
void os_getDevEui (u1_t* buf) { }
void os_getDevKey (u1_t* buf) { }

static uint8_t mydata[] = "a";
static osjob_t sendjob;

// Schedule TX every this many seconds (might become longer due to duty
// cycle limitations).
const unsigned TX_INTERVAL = 5000;

// Pin mapping
// Adapted for Feather M0 per p.10 of [feather]
const lmic_pinmap lmic_pins = {
    .nss = 10,                       // chip select on feather (rf95module) CS
    .rxtx = LMIC_UNUSED_PIN,
    .rst = 7,                       // reset pin
    .dio = {2, A2, A3}, // assumes external jumpers [feather_lora_jumper]
                                    // DIO1 is on JP1-1: is io1 - we connect to GPO6
                                    // DIO1 is on JP5-3: is D2 - we connect to GPO5

void onEvent (ev_t ev) {
    Serial.print(": ");
    switch(ev) {
        case EV_SCAN_TIMEOUT:
        case EV_BEACON_FOUND:
        case EV_BEACON_MISSED:
        case EV_BEACON_TRACKED:
        case EV_JOINING:
        case EV_JOINED:
        || 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:
        case EV_REJOIN_FAILED:
        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.println(F("Received "));
              Serial.println(F(" bytes of payload"));
            // Schedule next transmission
            os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send);
        case EV_LOST_TSYNC:
        case EV_RESET:
        case EV_RXCOMPLETE:
            // data received in ping slot
        case EV_LINK_DEAD:
        case EV_LINK_ALIVE:
        || 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:
        case EV_TXCANCELED:
        case EV_RXSTART:
            /* do not print anything -- it wrecks timing */
        case EV_JOIN_TXCOMPLETE:
            Serial.println(F("EV_JOIN_TXCOMPLETE: no JoinAccept"));
            Serial.print(F("Unknown event: "));
            Serial.println((unsigned) ev);

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() {
//    pinMode(13, OUTPUT);
    while (!Serial); // wait for Serial to be initialized
    delay(100);     // per sample code on RF_95 test

    #ifdef VCC_ENABLE
    // For Pinoccio Scout boards
    pinMode(VCC_ENABLE, OUTPUT);
    digitalWrite(VCC_ENABLE, HIGH);

    // LMIC init
    // Reset the MAC state. Session and pending data transfers will be discarded.

    // Set static session parameters. Instead of dynamically establishing a session
    // by joining the network, precomputed session parameters are be provided.
    #ifdef PROGMEM
    // On AVR, these values are stored in flash and only copied to RAM
    // once. Copy them to a temporary buffer here, LMIC_setSession will
    // copy them into a buffer of its own again.
    uint8_t appskey[sizeof(APPSKEY)];
    uint8_t nwkskey[sizeof(NWKSKEY)];
    memcpy_P(appskey, APPSKEY, sizeof(APPSKEY));
    memcpy_P(nwkskey, NWKSKEY, sizeof(NWKSKEY));
    LMIC_setSession (0x13, DEVADDR, nwkskey, appskey);
    // If not running an AVR with PROGMEM, just use the arrays directly
    LMIC_setSession (0x13, DEVADDR, NWKSKEY, APPSKEY);

    #if defined(CFG_eu868)
    // Set up the channels used by the Things Network, which corresponds
    // to the defaults of most gateways. Without this, only three base
    // channels from the LoRaWAN specification are used, which certainly
    // works, so it is good for debugging, but can overload those
    // frequencies, so be sure to configure the full frequency range of
    // your network here (unless your network autoconfigures them).
    // Setting up channels should happen after LMIC_setSession, as that
    // configures the minimal channel set. The LMIC doesn't let you change
    // the three basic settings, but we show them here.
    LMIC_setupChannel(0, 923200000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
    LMIC_setupChannel(1, 923400000, DR_RANGE_MAP(DR_SF12, DR_SF7B), BAND_CENTI);      // g-band
    LMIC_setupChannel(2, 922200000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
    LMIC_setupChannel(3, 922400000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
    LMIC_setupChannel(4, 922600000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
    LMIC_setupChannel(5, 922800000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
    LMIC_setupChannel(6, 923000000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
    LMIC_setupChannel(7, 922000000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
    LMIC_setupChannel(8, 922100000, DR_RANGE_MAP(DR_FSK,  DR_FSK),  BAND_MILLI);      // g2-band
    // TTN defines an additional channel at 869.525Mhz using SF9 for class B
    // devices' ping slots. LMIC does not have an easy way to define set this
    // frequency and support for class B is spotty and untested, so this
    // frequency is not configured here.
    #elif defined(CFG_us915) || defined(CFG_au915)
    // NA-US and AU channels 0-71 are configured automatically
    // but only one group of 8 should (a subband) should be active
    // TTN recommends the second sub band, 1 in a zero based count.
    // https://github.com/TheThingsNetwork/gateway-conf/blob/master/US-global_conf.json
    #elif defined(CFG_as923)
    // Set up the channels used in your country. Only two are defined by default,
    // and they cannot be changed.  Use BAND_CENTI to indicate 1% duty cycle.
    // LMIC_setupChannel(0, 923200000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);
    // LMIC_setupChannel(1, 923400000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);

    // ... extra definitions for channels 2..n here
    #elif defined(CFG_kr920)
    // Set up the channels used in your country. Three are defined by default,
    // and they cannot be changed. Duty cycle doesn't matter, but is conventionally
    // BAND_MILLI.
    // LMIC_setupChannel(0, 922100000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_MILLI);
    // LMIC_setupChannel(1, 922300000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_MILLI);
    // LMIC_setupChannel(2, 922500000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_MILLI);

    // ... extra definitions for channels 3..n here.
    #elif defined(CFG_in866)
    // Set up the channels used in your country. Three are defined by default,
    // and they cannot be changed. Duty cycle doesn't matter, but is conventionally
    // BAND_MILLI.
    // LMIC_setupChannel(0, 865062500, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_MILLI);
    // LMIC_setupChannel(1, 865402500, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_MILLI);
    // LMIC_setupChannel(2, 865985000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_MILLI);

    // ... extra definitions for channels 3..n here.
    # error Region not supported

    // Disable link check validation

    // TTN uses SF9 for its RX2 window.
    LMIC.dn2Dr = DR_SF9;

    // Set data rate and transmit power for uplink

    // Start job

void loop() {
    unsigned long now;
    now = millis();
    if ((now & 512) != 0) {
      digitalWrite(13, HIGH);
    else {
      digitalWrite(13, LOW);



Serial output:


Packet queued
139219: EV_TXCOMPLETE (includes waiting for RX windows)
452198: EV_TXSTART
Packet queued
582908: EV_TXCOMPLETE (includes waiting for RX windows)
895888: EV_TXSTART
Packet queued
1026597: EV_TXCOMPLETE (includes waiting for RX windows)
1339665: EV_TXSTART
Packet queued
1470378: EV_TXCOMPLETE (includes waiting for RX windows)
1783360: EV_TXSTART
Packet queued
1914073: EV_TXCOMPLETE (includes waiting for RX windows)
2227058: EV_TXSTART
Packet queued
2357773: EV_TXCOMPLETE (includes waiting for RX windows)
2670755: EV_TXSTART
Packet queued
2801468: EV_TXCOMPLETE (includes waiting for RX windows)
3114532: EV_TXSTART
Packet queued
3245245: EV_TXCOMPLETE (includes waiting for RX windows)
3558228: EV_TXSTART

In case someone know how to resolve the issue, then please advise.

Thank you.

PS: Since, RAK7243C supports * Full LoRaWAN Stack support (version 1.0.2), I have made few changes as recommended in MCCI_LoRaWAN_LMIC_library-4.1.1’ libraries readme.:

Selecting V1.0.2

In project_config/lmic_project_config.h, add:


On your compiler command line, add: