YUGE CLM920_AC3 User Manual

Product name
CLM920_AC3 Module Linux Integration User Manual
Number of pages
13
Version
V1.0
Date
2019/3/15
CLM920_AC3 Module
Linux Integration User Manual
V1.0
Shanghai Yuge Information Technology Co., Ltd.
All rights reserved

YUGE CLM920_AC3 Specifications

General

Brand	YUGE
Model	CLM920_AC3
Category	Control Unit
Language	English

Summary

Chapter 1. Linux system load domain module USB driver

1.1 Add USB serial port drive system components

Add USB to serial port driver by configuring the Linux kernel and selecting specific components for GSM/CDMA modems.

1.2 Add device drivers

Use `lsusb` to identify the device, then load the USB serial port driver using `modprobe`.

Chapter 2. Interactive AT process under Linux system

System test by sending AT commands via minicom

Test module functionality by sending AT commands through the minicom serial terminal.

Chapter 3. Dial-up Internet Process under Linux System

Dial-up Internet using provided script

Directly use the `yuga.lte-pppd` script for Internet dial-up after setting execution permissions.

Write pppd and chat scripts separately

Configure dial-up by creating custom `/etc/ppp/peers/lte` and `/etc/ppp/lte-connect-chat` files.

Chapter 4. Linux system loading Yuge module RNDIS dialing instructions

4.1 Load RNDIS driver

Load the `rndis_host.ko` driver, ensuring kernel configuration supports RNDIS.

4.2 RNDIS Network card obtains IP

Troubleshoot IP acquisition issues for the RNDIS network card by reconnecting USB.

4.3 RNDIS dialing related commands

Utilize AT commands like `AT+RNDISCALL` for initiating, querying, and disconnecting RNDIS connections.

4.4 Network test

Verify Internet connectivity after RNDIS dialing by performing ping tests.

Chapter 5. Linux System FAQ

Manually send AT commands via echo and cat

Send AT commands to the module using `echo` and `cat` commands in Linux for manual interaction.