To support oFono, the image recipe should include the following packages: Usb 1-1.3: GSM modem (1-port) converter now attached to ttyUSB2 Option 1-1.3:1.2: GSM modem (1-port) converter detected Usb 1-1.3: GSM modem (1-port) converter now attached to ttyUSB1 Option 1-1.3:1.1: GSM modem (1-port) converter detected Usb 1-1.3: GSM modem (1-port) converter now attached to ttyUSB0
If those options are used, you should see the following in dmesg: usbserial: USB Serial support registered for GSM modem (1-port) In order to support 3G USB modems, the following kernel configuration options If using a different modem, check first if it’s supported with oFono. Poky/Yocto is used as Linux distribution in combination with the mobile telephony application oFono.Īs hardware example we have a raspberrypi, nevertheless the same setup was applied and verified on other standard development kits and custom boards.įor the broadband connectivity Huawei E173 3G USB stick is used: In this article we will show how to extend an IoT Embedded Linux System with a broadband connection using 3G/4G networks.