Hello,

Does anyone have a success storry with this topic?
I'm trying to implemnt USB-CDC on LPC1343 using LPCUSB stack. I maneged
to pass the enumeration but after that point I have interrupt flood.

My setup is like this
- Olimex LPC-P1343 board
- Total Phase Beagle 12 USB analyser
- arm-none-eabi-gcc v4.5.0
- CodeBlocks IDE (with custom Makefile)
- debugging using printf (I have J-Link but OpenOCD can't do SWD with
J-Link :-( )

In Beagle Data Center after enumeration (ending with GET_LINE_CODING and
SET_CONTROL_LINE_STATE) I see only IN/NAK and that is OK because I did
not send anything.

But in MCU I have flood of interrupts for BULK_IN_EP, something about 89
interrupts in only one USB frame so my main loop is executing with a
speed of wounded snail :)



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Sound like you are working on an early version of LPCUSB, which runs with NAK interrupts of bulk IN EP. Try the "latest" one on the SourceForge SVN.
http://sourceforge.net/p/lpcusb/code/HEAD/tree/trunk/target/examples/main_serial.c

Tsuneo Start a New Thread

On 29.12.2013 11:48, t...@yahoo.com wrote:
Thanks Tsuneo,
I was working with latest lpcusb (from trunk) but my usb-cdc code was
not up-to-date. Enyway, it's all sorted now, usb-cdc is working.
For enyone interested in file section is my modified lpcusb.

>
> Sound like you are working on an early version of LPCUSB, which runs
> with NAK interrupts of bulk IN EP. Try the "latest" one on the
> SourceForge SVN.
>
> http://sourceforge.net/p/lpcusb/code/HEAD/tree/trunk/target/examples/main_serial.c
>
> Tsuneo Start a New Thread