Rockpi4/Use 4G Module on ROCK Pi 4
ROCK Pi 4 > Use 4G Module on ROCK Pi 4
Introduction
This guide tells how to use 4G module on ROCK Pi 4. 4G modules including SIM7600 and QUECTEL EC20 are tested.
Install needed packages
The new version (4.4.179) of ROCK Pi 4 Kernel packages are located at Radxa APT testing branches.
Firstly, add Radxa APT source, stretch-testing or bionic-testing according to Radxa APT
Secondly, update U-Boot
- ROCK Pi 4A
sudo apt-get install rockpi4a-rk-u-boot-latest
- ROCK Pi 4B
sudo apt-get install rockpi4b-rk-u-boot-latest
Thirdly, update Kernel
sudo apt-get install -y rockchip-overlay sudo apt-get install -y linux-headers-4.4.179-11-rockchip-g7ebe2c58142e sudo apt-get install -y linux-image-4.4.179-11-rockchip-g7ebe2c58142e sudo apt-get install -y linux-firmware-image-4.4.179-11-rockchip-g7ebe2c58142e
Finally, reboot the machine.
Test
After pluging the 4G Module, some Kernel log would be shown like this.
root@rockpi:~# dmesg -c [ 30.578257] usb 2-1: new high-speed USB device number 2 using ehci-platform [ 30.702800] usb 2-1: New USB device found, idVendor=2c7c, idProduct=0125 [ 30.702844] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 30.702870] usb 2-1: Product: Android [ 30.702894] usb 2-1: Manufacturer: Android [ 30.736435] usbcore: registered new interface driver cdc_wdm [ 30.741322] qmi_wwan 2-1:1.4: cdc-wdm0: USB WDM device [ 30.742860] qmi_wwan 2-1:1.4 wwan0: register 'qmi_wwan' at usb-fe3c0000.usb-1, WWAN/QMI device, ce:88:21:9d:67:76 [ 30.743011] usbcore: registered new interface driver qmi_wwan [ 30.748004] usbcore: registered new interface driver usbserial [ 30.748295] usbcore: registered new interface driver usbserial_generic [ 30.748413] usbserial: USB Serial support registered for generic [ 30.754861] usbcore: registered new interface driver option [ 30.754954] usbserial: USB Serial support registered for GSM modem (1-port) [ 30.755801] option 2-1:1.0: GSM modem (1-port) converter detected [ 30.757208] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0 [ 30.757492] option 2-1:1.1: GSM modem (1-port) converter detected [ 30.757817] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1 [ 30.757994] option 2-1:1.2: GSM modem (1-port) converter detected [ 30.761613] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2 [ 30.761851] option 2-1:1.3: GSM modem (1-port) converter detected [ 30.763861] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB3
Also, the device /dev/cdc-wdm0 is created with network interface name wwan0.
Test commands:
echo Y > /sys/class/net/wwan0/qmi/raw_ip ip link set dev wwan0 up qmicli --device=/dev/cdc-wdm0 --device-open-proxy --wds-start-network="ip-type=4,apn=data.tre.se" --client-no-release-cid udhcpc -q -f -n -i wwan0
Use speedtest tool
root@rockpi:~# speedtest Retrieving speedtest.net configuration... Testing from China Unicom Guangdong (112.97.57.63)... Retrieving speedtest.net server list... Selecting best server based on ping... Hosted by ShenZhen Unicom (ShenZhen) [0.00 km]: 52.334 ms Testing download speed................................................................................ Download: 49.50 Mbit/s Testing upload speed.................................................................................................... Upload: 41.49 Mbit/s
Troubleshooting
- If you have a issue, start a new post on the forum. https://forum.radxa.com/