Guidance on Routing MQTT Data to a USB Virtual COM Port on a Quectel EG915U-LA

IoT Modules LTE Standard Module
1

Hello,

I have an existing IoT solution where a Quectel module (EG915U-LA) successfully receives data from a Python application via the MQTT protocol.

I now have a new requirement: I need to forward all MQTT messages received by the Quectel module to its USB interface, making the data available on a host computer.

Based on this, I have a few questions:

  1. Host Driver Requirement: Is a specific driver required on the host computer for the operating system (e.g., Windows, Linux) to recognize the Quectel module when connected via USB?
  2. Device Recognition: When I plug the module into the host via USB, how will it be enumerated? Will it typically appear as a Virtual COM Port, or could it be recognized as another type of device?
  3. Data Monitoring Tool: If it is recognized as a Virtual COM Port, what tool would you recommend to open the port and monitor the incoming data stream on the host?
  4. AT Command for USB Data Forwarding: What is the correct AT command sequence to transparently send data received by the module (in this case, via MQTT) out through its USB serial port?

Could you please advise if this requirement is feasible and provide any guidance on the points above?

Thank you in advance for your assistance.

Best regards,
Fer Mercado

2

hi
1、Drivers need to be installed.
2、The device will be enumerated as the following ports：

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3、We recommend using our qcom debugging tool.
4、You can use our qcom tool directly, and then automatically forward the data to the USB port using the MQTT protocol.