OTA join mdot fails (better tracing mdot)

[Andre Broers]

Hello,

I’m trying to write my own network server that handles the OTA join of an mdot. Everything works fine, I get the join request, i send the join accept and I see in the log on the gateway that the join accept message is send.

##### 2016-01-09 20:11:35 GMT #####
### [UPSTREAM] ###
# RF packets received by concentrator: 0
# CRC_OK: 0.00%, CRC_FAIL: 0.00%, NO_CRC: 0.00%
# RF packets forwarded: 0 (0 bytes)
# PUSH_DATA datagrams sent: 0 (0 bytes)
# PUSH_DATA acknowledged: 0.00%
### [DOWNSTREAM] ###
# PULL_DATA sent: 1 (100.00% acknowledged)
# PULL_RESP(onse) datagrams received: 0 (0 bytes)
# RF packets sent to concentrator: 0 (0 bytes)
# TX errors: 0
##### END #####
INFO: [up] PUSH_ACK received in 13 ms
INFO: [up] PUSH_ACK received in 12 ms
INFO: [down] PULL_RESP received 🙂
INFO: [down] a packet will be sent on timestamp value 244744644
INFO: [down] PULL_ACK received in 12 ms
INFO: [down] PULL_ACK received in 12 ms

##### 2016-01-09 20:11:55 GMT #####
### [UPSTREAM] ###
# RF packets received by concentrator: 2
# CRC_OK: 50.00%, CRC_FAIL: 50.00%, NO_CRC: 0.00%
# RF packets forwarded: 2 (184 bytes)
# PUSH_DATA datagrams sent: 2 (674 bytes)
# PUSH_DATA acknowledged: 100.00%
### [DOWNSTREAM] ###
# PULL_DATA sent: 2 (100.00% acknowledged)
# PULL_RESP(onse) datagrams received: 1 (205 bytes)
# RF packets sent to concentrator: 1 (37 bytes)
# TX errors: 0
##### END #####

This is the output on the mdot.

atz

OK
at+ni=0,0000000000000000
Set Network ID: 00.00.00.00.00.00.00.00

OK
at+njm=1

OK
at+join
Join Error – Failed to join network

ERROR

Is there a better way to see more specific (verbose) logs on what is going wrong on the mdot? Is there a way to snif all the packets that it receives so that I can see that it at least gets my join accept message and that it maybe doesnt validate the MIC or something?

Kind regards.

[Jason Reiss]

The mDot will print debug on the mbed debug pins on the back of the module. This is available through the USB of the UDK.

AT+LOG=6 will set the log level to max.

If you are using 5/6 s join windows set AT+PN=1
Since you received the JoinRequest I assume you have done this, unless you gateway is set for Private Network sync word 0x12.
In that case the AT+PN=0 would match the sync word by the expected JoinAccept message will be at 1/2s on the mDot.

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