Affichage LORA V3 et join TTN

#1

Hello,
I recently bought ESP32 Lora V3 nodes.

I use the demo version of Lorawan downloaded from Github HelTecAutomation/Heltec_ESP32.

I did some tests with TTN, it works well.

I wanted to disable the OLED display to measure the current consumption.

To do this, I test GPIO 7, if it is low, I do not display anything.

 if (aff_oled == 1)  
{
  LoRaWAN.displayMcuInit();
}

The problem is that the join function does not work in this specific case.

I do not receive the downstream acceptance data.

16:10:27.230 -> joining...

16:10:27.230 -> TX on freq 868300000 Hz DR 3 power 14

16:10:27.741 -> .Event : Tx Done

16:10:28.253 -> ..........RX on freq 868300000 Hz at DR 3

16:10:33.252 -> .Event : Rx Timeout

16:10:33.749 -> ..RX on freq 869525000 Hz at DR 0

16:10:34.777 -> .Event : Rx Timeout

16:10:35.234 -> ...........................TX on freq 868300000 Hz DR 3 power 14

16:10:48.775 -> .Event : Tx Done

16:10:49.287 -> ..........RX on freq 868300000 Hz at DR 3

I can see the exchanges on my TTN console.

I looked at Lorawan_app.cpp and I do not see why it blocks.

It works well when the display is enabled.

Is there any other way to turn off the display?

Any idea?
:slightly_smiling_face:

Thanks.

#2

Hello!
This error is caused by network join failure and continuous joining attempts. Please confirm the gateway configuration is correct and the gateway and node devices registered on the cloud platform are activated to ensure successful network join.

#3

hello,

this morning, it works!!!
I tried to reproduce but impossible. :thinking:

I close the post.

Thanks