lpcware

CDC sample problem

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by gjdevos on Mon Jan 19 09:55:36 MST 2015
Our LPC4370 based system uses the USB CDC API. Occasionally, the host cannot communicate with the board.
I managed to reproduce the same problem by running usbd_rom_dfu-composite on the Lpc-Link2 board. When
running the attached python script in a loop, the LPC stops echoing the data after many iterations. I have only
seen the problem occur on a linux host. It does not happen on a Windows host using the same communication
script. The usbd_rom_dfu-composite sample includes the artf45032 patch for CDC.

Has anyone seen familiar issues in the CDC ROM implementation? Am I missing a patch? I'm using
LPCOpen V2.12.

Gert-Jan

Original Attachment has been moved to: serial.py_.txt.zip

Outcomes