71 lines
2.2 KiB
Markdown
71 lines
2.2 KiB
Markdown
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# Quectel EG25-G GSM Modem
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## Kernel Changes
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This package requires the Spiri Mu kernel and modifications to the following files:
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* drivers/usb/serial/option.c
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* drivers/usb/serial/usb_wwan.c
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* drivers/net/usb/qmi_wwan.c
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* drivers/net/usb/Makefile
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It also requires these new files:
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* drivers/net/usb/GobiUSBNet.c
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* drivers/net/usb/QMI.c
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* drivers/net/usb/QMI.h
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* drivers/net/usb/QMIDevice.c
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* drivers/net/usb/QMIDevice.h
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* drivers/net/usb/Structs.h
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All these modifications and additions are part of the Spiri Mu kernel. The files are represented in https://git.spirirobotics.com/Spiri/mu_kernel_sources as symlinks from this repository.
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## Installation
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Clone the repository:
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```
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cd ~/git
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git clone https://git.spirirobotics.com/Spiri/mu_packages.git
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```
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Create a udhcpc symbolic link:
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```
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cd /bin
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sudo ln -s busybox udhcpc
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```
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Create udhcpc directories, copy in the script, and give it execution permission:
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```
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sudo mkdir -p /usr/share/udhcpc
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sudo mkdir -p /etc/udhcpc/
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sudo cp ~/git/mu_packages/eg25-g/default.script /usr/share/udhcpc
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sudo cp ~/git/mu_packages/eg25-g/default.script /etc/udhcpc
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sudo chmod +x /usr/share/default.script
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sudo chmod +x /etc/udhcpc/default.script
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```
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Build the application:
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```
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cd ~/git/mu_packages/eg25-g/quectel-CM
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make
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```
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## Running
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The following command launches the package, with [apn-name] being substituted with the APN of the wireless provider. For BICS, the APN is bicsapn. To run this in the background, add & to the end of the command.
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```
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sudo ./git/mu_packages/eg25-g/quectel-CM/quectel -s [apn-name]
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```
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## Troubleshooting
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If the modem is correctly connected to the system, the following command will show the GSM modem attaching to ttyUSB0, ttyUSB1, ttyUSB2, and ttyUSB3:
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```
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dmesg | grep GSM
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```
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If the modem has successfully connected to a tower and is being served an IP address, then the following command will show an IP address being served:
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```
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ifconfig eth1
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```
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## Documentation
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* <a href="https://nextcloud.spirirobotics.com/f/3971">Cellular modem hardware design</a>
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* <a href="https://nextcloud.spirirobotics.com/f/3970">Cellular modem PPP</a>
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* <a href="https://nextcloud.spirirobotics.com/f/3968">Cellular modem AT commands</a>
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* <a href="https://nextcloud.spirirobotics.com/f/3969">Cellular modem GNSS AT commands</a>
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