RAK7204 stops sending data

LoRa® Nodes RAK7204
#1

Hello, RAK team,

I’m testing RAK7204 for few months now. I had one time device stopped sending data. After restart device started to send data again. Now i have again same situation device stopped sending data. I do not want to restart it. I need to debug that is the problem because if test will be successful we will start it using in our company for agriculture fields monitoring this means driving few a few hundred kilometers to restart one node.

I need to debug this sensor how can i do that? Do you have any tools? What steps to do next after i see device do not send any data.

Device: RAK7204
FW version: V3.0.0.12
Bootloader: 3.0.2
Server: Chirpstack/loraserver

Gateway ~5 meters from the sensor. Gateway works fine other nodes sends data using this gateway.

#2

Hi. You can monitor the node with RAK Serial tool, but have to be connected to it. To try to help you we have to see some outputs.

#3

Hello Velev,

Bellow some output from Serial tool. As there is no timestamp it is not so useful i guess.

I have tried to send command at+join. Device replies OTAA Join Start… OK but never joins. And only after command at+set_config=device:restart device joined and sent data instantly.

I guess in the future it would be perfect if to add some watchdog to restart device in case not able to join.

at+version
OK3.0.0.9.H

at+get_config=device:status
OK.

===============Device Status List================
Board Core: RAK811
MCU: STM32L151CB_A
LoRa chip: SX1276

===================List End======================

at+get_config=lora:status
OK.

==============LoRaWAN Status List================
Work Mode: LoRaWAN
Region: EU868
Send_interval: 600s
Auto send status: true.
Send_interval work at sleep
Join_mode: OTAA
DevEui: 60C5A8FFFE7634CD
AppEui: 60C5A8FFFE7634CD
AppKey: E1BCDE4DA6AA3B3DAD04EEDBE383B172
Class: A
Joined Network:true
IsConfirm: false
AdrEnable: true
EnableRepeaterSupport: false
RX2_CHANNEL_FREQUENCY: 869525000, RX2_CHANNEL_DR:0
RX_WINDOW_DURATION: 3000ms
RECEIVE_DELAY_1: 1000ms
RECEIVE_DELAY_2: 2000ms
JOIN_ACCEPT_DELAY_1: 5000ms
JOIN_ACCEPT_DELAY_2: 6000ms
Current Datarate: 0
Primeval Datarate: 2
ChannelsTxPower: 0
UpLinkCounter: 1802
DownLinkCounter: 1498
===================List End======================

at+set_config=lora:send_interval:1,30
Start auto send data with sleep.
OK

at+get_config=device:status
OK.

===============Device Status List================
Board Core: RAK811
MCU: STM32L151CB_A
LoRa chip: SX1276

===================List End======================

at+join
OTAA:
DevEui:60C5A8FFFE7634CD
AppEui:60C5A8FFFE7634CD
AppKey:E1BCDE4DA6AA3B3DAD04EEDBE383B172
OTAA Join Start…
OK

at+set_config=device:restart
OK,restart …

========================================================

| ___ / _ \ | | / / | | | () | |
| |/ / /\ | |/ / | | | | _ __ | | ___ ___ ___
| /| _ || \ | |/| | | '/ _ \ |/ _ / __/ __|
| |\ | | | || |\ \ \ /\ / | | | __/ | /_ _
_| __| |/_| _/ / /||| _|_|_||//

RAK7204 Version:3.0.0.9.H

========================================================

Selected LoRaWAN 1.0.2 Region: EU868
BME680 init success.
autosend_interval: 30s
Current work_mode:LoRaWAN, join_mode:OTAA, Class: A
OTAA:
DevEui:60C5A8FFFE7634CD
AppEui:60C5A8FFFE7634CD
AppKey:E1BCDE4DA6AA3B3DAD04EEDBE383B172
OTAA Join Start…
[LoRa]:Joined Successed!
Battery Voltage = 3.558 V
Humidity:52.113 %RH
Temperature:22.67 degree
Pressure:988.55 hPa
Gas_resistance: 8844 ohms
[LoRa]: send out
[LoRa]: Unconfirm data send OK
Go to Sleep.
Wake up.
Battery Voltage = 3.575 V
Humidity:51.606 %RH
Temperature:22.70 degree
Pressure:988.55 hPa
Gas_resistance: 13491 ohms
[LoRa]: send out
[LoRa]: Unconfirm data send OK
Go to Sleep.
Wake up.
Battery Voltage = 3.580 V
Humidity:50.918 %RH
Temperature:22.77 degree
Pressure:988.61 hPa
Gas_resistance: 19034 ohms
[LoRa]: send out
[LoRa]: Unconfirm data send OK
Go to Sleep.
Wake up.
Battery Voltage = 3.581 V
Humidity:50.269 %RH
Temperature:22.86 degree
Pressure:988.59 hPa
Gas_resistance: 24906 ohms
[LoRa]: send out
[LoRa]: Unconfirm data send OK
Go to Sleep.

#4

Hi @Ernestas,

It is a good idea about watchdog, but i think it can be used for some issue, not join, because if there isn’t a valid gateway, RAK7204 will join—failed—restart—join—failed—restart…, then the battery will be used up soom.

Actually, we’ve released the latest firmware V3.0.0.12.H.T, which you can find here:
https://downloads.rakwireless.com/en/LoRa/RAK7204/Firmware/
In this firmware, if RAK7204 join failed, after some time, RAK7204 will try to join again. You can use “at+set_config=lora:send_interval:X:Y” to set the join interval too.

image
image783×115 13.6 KB

#5

Thank you perfect, i will try it.

#6

Hi Ernestas, I have the same problem. Did you get it fixed? If so, how?

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