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Posts Tagged ‘USB’

Modem usb_modeswitch in Raspberry Pi

In ARM Linux on 25 March 2013 with 2 comments 6106 views

USB modem these days are plug-and-play as CD-ROM first allowing driver and internet dialer application installations and then as modem afterwards. This Windows-behavior is handled by USB_ModeSwitch in Linux. Likely three years ago we did eject and other driver attachment by writing udev rules. Now it’s almost automatically attached as modem after insertion and people [...]

Raspberry Pi Common USB Problems

In ARM Linux on 24 March 2013 with 1 comment 6537 views

USB problem is the first thing to arise with Raspberry Pi when plugging-in peripherals. This isn’t exclusive though, learning that my Linux laptop also has it and the higher ARM architecture, BeagleBoard-xM, also experiences the same issue sometime. But with Raspberry Pi (RPi) in

USB WiFi Stick on Beagleboard xM Using wpa_supplicant

In ARM Linux, General Linux, Ubuntu on 7 March 2012 with no comments 788 views

One of the most popular USB WiFi sticks in Indonesian market is TP Link which is actually a Ralink wireless adapter (looking at its vendor ID code). Attaching it using wpa_supplicant without explicit driver assignment will return the following error lines ioctl[SIOCSIWENCODEEXT]: Invalid argument ioctl[SIOCSIWENCODEEXT]: Invalid argument Within minutes it will also crash the system [...]

Compile USB Serial Modem Using option.c (Ubuntu on Beagleboard xM)

In ARM Linux, General Linux, Ubuntu on 9 January 2012 with 2 comments 4155 views

Despite possibility to use (1) $ modprobe -v usbserial vendor=0x05c6 product=0×0015 or (2) usb-modeswitch, (3) Matthias Urlichs initially wrote option.c driver as a way to insert USB modem as kernel module. This driver exists because the “normal” serial driver doesn’t work too well with GSM modems. Issues: – data loss — one single Receive URB [...]

Ubuntu on Beagleboard xM with Easycap Video Capture (Compiling Driver)

In ARM Linux, Ubuntu on 31 December 2011 with no comments 1757 views

Attempt to run Ubuntu in BeagleBoard xM rev C board has taken me to try various options of kernel and release. The goal was to have both Ubuntu and widely-available Easycap as video input via the USB of this compact TI OMAP board. Porting Ubuntu would spare us some flexibility to try different alternatives of [...]