Not stable Wi-Fi connection

IoT Modules
1

Hi,

When I starts MQTT connection with broker, the Wi-Fi connection down:

AT+KMQTTCNX=1
OK

+KMQTT_IND: 1,6

=> After 5-8 seconds:

+SRWSTASTATUS: 0,200 => “STA lost N beacons continuously”

+KMQTT_IND: 1,5

+KMQTT_IND: 1,0

What I do wrong?

2

are you testing with latest FW?

3

AT+CGMR
BX310x.2.7.3
OK

4

can you check whether issue is on FW 2.6.3 ?

https://source.sierrawireless.com/resources/airprime/software/bx310x-firmware/#sthash.nmsdH4TR.dpbs

5

With FW 2.6.3 Wi-Fi connection looks stable.

But now when I connect to MQTT broker I get connection error:

AT+KMQTTCNX=1
OK

+KMQTT_IND: 1,0 => MQTT connection aborted error.

6

You can capture wireshark log on server side to see what is happening

7

FW 2.6.3 Wi-Fi connection not stable, but much better than FW 2.7.3.

Sometimes the Wi-Fi connection down (25%):

AT+KMQTTCNX=1
OK

+SRWSTASTATUS: 0,200

+KMQTT_IND: 1,0

and sometimes I get connection error (75%):

AT+KMQTTCNX=1
OK

+KMQTT_IND: 1,0

8

ONLY with FM 2.5.0-2 Wi-Fi works perfect!

The question is what wrong in FM versions 2.6.3, 2.7.2 and 2.7.3?

9

can you use FW 2.5.0

10

NO, I can’t use FM 2.5.0, because FM 2.5.0-2 have ONLY 4 BT commands and zero BLE commands!!!
In AT Commands reference PDF file I see in BT commands section more than 30 commands available for FM 2.5.0+, BUT when I run AT+CALC command I see ONLY 4 BT commands:
AT+CLAC
+CLAC:
…
AT+SRBTADDR
AT+SRBTNAME
AT+SRBTPS
AT+SRBTSYSTEM
…

What’s going on?!?