Quality RTOS & Embedded Software

 Real time embedded FreeRTOS RSS feed 
Real time embedded FreeRTOS mailing list 
Quick Start Supported MCUs PDF Books Trace Tools Ecosystem TCP & FAT Training


USB CDC demo linux

Posted by madis on October 22, 2007

I have question regarding SAM7X lwip demo. There is USB CDC driver included in that project. Which runs fine in case of windows host. But I can not get it working under linux. My linux box finds the usb device and seems to enumerate it fine:

usb 2-8.4: new full speed USB device using ehci_hcd and address 5
usb 2-8.4: configuration #1 chosen from 1 choice

But thats all it does. Linux version is:

debian stable

lsmod shows that cdc_acm module is loaded. I loaded it manually. It seems to be that CDC class device is not recognized?

Thank you,

RE: USB CDC demo linux

Posted by Richard on October 22, 2007
I'm afraid it has been noted before that the CDC driver is not fully conferment to the CDC spec, so I expect this is the issue on Linux. Windoze (on which it was developed) is somewhat more forgiving it seems. The driver is just meant for demo purposes. If you correct it for Linux then let me know and I can update the files. I do not have access to a Linux machine so cannot test it myself.


[ Back to the top ]    [ About FreeRTOS ]    [ Sitemap ]    [ ]

Copyright (C) 2004-2010 Richard Barry. Copyright (C) 2010-2016 Real Time Engineers Ltd.
Any and all data, files, source code, html content and documentation included in the FreeRTOSTM distribution or available on this site are the exclusive property of Real Time Engineers Ltd.. See the files license.txt (included in the distribution) and this copyright notice for more information. FreeRTOSTM and FreeRTOS.orgTM are trade marks of Real Time Engineers Ltd.

Latest News:

FreeRTOS V9.0.0 is now available for download.

Free TCP/IP and file system demos for the RTOS

Sponsored Links

⇓ Now With No Code Size Limit! ⇓
⇑ Free Download Without Registering ⇑

FreeRTOS Partners

ARM Connected RTOS partner for all ARM microcontroller cores

Renesas Electronics Gold Alliance RTOS Partner.jpg

Microchip Premier RTOS Partner

RTOS partner of NXP for all NXP ARM microcontrollers

Atmel RTOS partner supporting ARM Cortex-M3 and AVR32 microcontrollers

STMicro RTOS partner supporting ARM7, ARM Cortex-M3, ARM Cortex-M4 and ARM Cortex-M0

Xilinx Microblaze and Zynq partner

Silicon Labs low power RTOS partner

Altera RTOS partner for Nios II and Cortex-A9 SoC

Freescale Alliance RTOS Member supporting ARM and ColdFire microcontrollers

Infineon ARM Cortex-M microcontrollers

Texas Instruments MCU Developer Network RTOS partner for ARM and MSP430 microcontrollers

Cypress RTOS partner supporting ARM Cortex-M3

Fujitsu RTOS partner supporting ARM Cortex-M3 and FM3

Microsemi (previously Actel) RTOS partner supporting ARM Cortex-M3

Atollic Partner

IAR Partner

Keil ARM Partner

Embedded Artists