BG95-M3 cannot access MQTT by AT commands

IoT Modules LPWA Module
1

I can utilize BG95-M3 EVB to access HTTP website by using AT commands from your application note. However, when I follow the MQTT application note, all the MQTT’s AT command failed, inclung CFG, OPEN, CONNECT for MQTT, all failed. Please advise if this problem is caused by the firmware version of BG95-M3. Which version of firmware support MQTT access via AT command. Please advise.

2

Hi @Wan_Billy

MQTT is a base function, all version should be support it. could you please tell me the current version.

3

The firmware version is BG95M3LAR02A03_31.201.31.201.

It seems that Quectel remove the AT command for MQTT in the latest version.

When I used any AT commands for MQTT. It all returns error.

I want the firmware that can support AT command for MQTT.

Thanks.

Regards, Billy

4

Hi @Wan_Billy

Where are you get this FW? this version use to QuecPython and DO NOT support MQTT, MQTT-SN function.

5

I buy it from Waveshare called BG95-M3 Zero development board?

So, what is the version of firmware I should use to support AT command for MQTT?

Please advise and how can I download it?

Thanks.

6

I brought it from Waveshare BG95-M3 Zero development board. What firmware I should I get for AT commands for MQTT? How can I get it?

7

Hi @Wan_Billy

You can use this FW: BG95M3LAR02A03_A0.301.A0.301.zip

8

Thank you for your support.

I can flash the firmware A0_301 succesfully. However, the USB serial com port disconnect every second from PC when using this firmware. And I cannot test it with any AT command via USB port as serial port. I cannot connect to the board via USB. Please advise if this firmware is for BG95M3 Zero Development board. If yes, how can I use it via USB.

9

Hi @Wan_Billy

What’s Zero borad? there is no problems in FW version 301 and it already released. have you tried Main UART? or probably USB cabel has problem. Please try to replace on to retest.