Hi there
I am using a Heltec CubeCell-Board（HTCC-AB01)
I successfully sent a message to the TTN network, I see my message in the console but nothing afterwards (no webhook is called).
According to CHATGPT my node continually tries to join, this request is correctly received bij TTN, but the Join Accept is not sent, received or processed correctly by my node.
Here is my TTN logging (json export)
And I have my code below.
TTN export:
{
"name": "as.up.join.forward",
"time": "2025-03-25T21:10:00.263607529Z",
"identifiers": [
{
"device_ids": {
"device_id": "heltec",
"application_ids": {
"application_id": "boat-readings"
},
"dev_eui": "0700B30D5xxxx00",
"join_eui": "AA2EAC40xxxx8701",
"dev_addr": "260xxxx51"
}
}
],
"data": {
"@type": "type.googleapis.com/ttn.lorawan.v3.ApplicationUp",
"end_device_ids": {
"device_id": "heltec",
"application_ids": {
"application_id": "boat-readings"
},
"dev_eui": "0700B30DxxxxxD00",
"join_eui": "AA2EAC4xxxxx88701",
"dev_addr": "260xxxx51"
},
"correlation_ids": [
"gs:uplink:01JQ7J80GS42MxxxxY0TNRH"
],
"received_at": "2025-03-25T21:10:00.240180261Z",
"join_accept": {
"session_key_id": "AZXPJxxxxs9wG+XxL0bA==",
"received_at": "2025-03-25T21:09:58.426314320Z"
}
},
"correlation_ids": [
"gs:uplink:01JQ7J80GS42M8xxxxxY0TNRH"
],
"origin": "ip-10-100-12-124.eu-west-1.compute.internal",
"context": {
"tenant-id": "CgN0dG4="
},
"visibility": {
"rights": [
"RIGHT_APPLICATION_TRAFFIC_READ"
]
},
"unique_id": "01JQ7J82Axxxxx9PBP46TBFE"
},
{
"name": "ns.up.join.process",
"time": "2025-03-25T21:09:58.633216679Z",
"identifiers": [
{
"device_ids": {
"device_id": "heltec",
"application_ids": {
"application_id": "boat-readings"
},
"dev_eui": "0700B30xxxxxD00",
"join_eui": "AA2EAC4054xxxxxxx01",
"dev_addr": "260Bxxxx"
}
}
],
"data": {
"@type": "type.googleapis.com/ttn.lorawan.v3.UplinkMessage",
"raw_payload": "AAGHuFRArC6xxxxxAAfIm0x5rtE=",
"payload": {
"m_hdr": {},
"mic": "THmu0Q==",
"join_request_payload": {
"join_eui": "AA2EAC40xxxxx1",
"dev_eui": "0700B30DxxxxD00",
"dev_nonce": "9BC8"
}
},
"settings": {
"data_rate": {
"lora": {
"bandwidth": 125000,
"spreading_factor": 7,
"coding_rate": "4/5"
}
},
"frequency": "868100000",
"timestamp": 4023655843,
"time": "2025-03-25T21:09:48.406743049Z"
},
"rx_metadata": [
{
"gateway_ids": {
"gateway_id": "ttn-gw-nieuwvennep",
"eui": "B827EBxxxxx16473"
},
"time": "2025-03-25T21:09:48.406743049Z",
"timestamp": 4023655843,
"rssi": -117,
"channel_rssi": -117,
"snr": -0.25,
"location": {
"latitude": 52.2673550827753,
"longitude": 4.62064858520747,
"source": "SOURCE_REGISTRY"
},
"uplink_token": "CiAKHgoSdHRuLWd3LW5pZXVxxxxxx/mFkcxCju9D+DhoMCKa3jL8GExxxx6SN5Fk=",
"received_at": "2025-03-25T21:09:58.409923299Z"
}
],
"recei
Mycode:
#include <LoRaWan_APP.h>
#include <Arduino.h>
#include <Seeed_BME280.h>
#include <Wire.h>
#include "ttnparams.h"
uint32_t appTxDutyCycle = 300000; // the frequency of readings, in milliseconds(set 300s)
uint16_t userChannelsMask[6]={ 0x00FF,0x0000,0x0000,0x0000,0x0000,0x0000 };
LoRaMacRegion_t loraWanRegion = ACTIVE_REGION;
DeviceClass_t loraWanClass = LORAWAN_CLASS;
bool overTheAirActivation = LORAWAN_NETMODE;
bool loraWanAdr = LORAWAN_ADR;
bool keepNet = LORAWAN_NET_RESERVE;
//bool isTxConfirmed = LORAWAN_UPLINKMODE;
bool isTxConfirmed = true;
uint8_t appPort = 2;
uint8_t confirmedNbTrials = 4;
int temperature, humidity, batteryVoltage, batteryLevel;
long pressure;
BME280 bme280;
static void prepareTxFrame( uint8_t port )
{
// This enables the output to power the sensor
pinMode(Vext, OUTPUT);
digitalWrite(Vext, LOW);
delay(500);
if(!bme280.init()){
Serial.println("Device error!");
}
// This delay is required to allow the sensor time to init
delay(1000);
temperature = bme280.getTemperature() * 100;
humidity = bme280.getHumidity();
pressure = bme280.getPressure();
Wire.end();
// Turn the power to the sensor off again
digitalWrite(Vext, HIGH);
batteryVoltage = getBatteryVoltage();
batteryLevel = (BoardGetBatteryLevel() * 100) / 254;
appDataSize = 12;
appData[0] = highByte(temperature);
appData[1] = lowByte(temperature);
appData[2] = highByte(humidity);
appData[3] = lowByte(humidity);
appData[4] = (byte) ((pressure & 0xFF000000) >> 24 );
appData[5] = (byte) ((pressure & 0x00FF0000) >> 16 );
appData[6] = (byte) ((pressure & 0x0000FF00) >> 8 );
appData[7] = (byte) ((pressure & 0X000000FF) );
appData[8] = highByte(batteryVoltage);
appData[9] = lowByte(batteryVoltage);
appData[10] = highByte(batteryLevel);
appData[11] = lowByte(batteryLevel);
Serial.print("Temperature: ");
Serial.print(temperature / 100);
Serial.print("C, Humidity: ");
Serial.print(humidity);
Serial.print("%, Pressure: ");
Serial.print(pressure / 100);
Serial.print(" mbar, Battery Voltage: ");
Serial.print(batteryVoltage);
Serial.print(" mV, Battery Level: ");
Serial.print(batteryLevel);
Serial.println(" %");
}
void McpsIndication(McpsIndication_t *mcpsIndication) {
Serial.println("Incoming LoRa packet detected!");
if (mcpsIndication->Status != LORAMAC_EVENT_INFO_STATUS_OK) {
Serial.println("Uplink failed!");
return;
}
Serial.println("Uplink successfully received by TTN!");
}
void setup()
{
boardInitMcu(); // Initialiseer de Heltec board MCU
Serial.begin(115200);
delay(2000); // Wacht even zodat de serial monitor goed opstart
LoRaWAN.ifskipjoin(); // Controleert of join moet worden overgeslagen
deviceState = DEVICE_STATE_INIT;
}
void loop()
{
switch( deviceState )
{
case DEVICE_STATE_INIT:
{
printDevParam();
LoRaWAN.init(loraWanClass,loraWanRegion);
deviceState = DEVICE_STATE_JOIN;
break;
}
case DEVICE_STATE_JOIN:
{
LoRaWAN.join();
Serial.println("Trying to join TTN...");
LoRaWAN.setDataRateForNoADR(3); // Stel RX2 in op SF9BW125 (betere ontvangst)
break;
}
case DEVICE_STATE_SEND:
{
prepareTxFrame( appPort );
Serial.println("Sending data...");
LoRaWAN.send();
deviceState = DEVICE_STATE_CYCLE;
break;
}
case DEVICE_STATE_CYCLE:
{
// Schedule next packet transmission
txDutyCycleTime = appTxDutyCycle + randr( 0, APP_TX_DUTYCYCLE_RND );
LoRaWAN.cycle(txDutyCycleTime);
deviceState = DEVICE_STATE_SLEEP;
break;
}
case DEVICE_STATE_SLEEP:
{
LoRaWAN.sleep();
break;
}
default:
{
deviceState = DEVICE_STATE_INIT;
break;
}
}
}
Check - don’t need the JSON at this point
