topic USB device Multipacket on mcf537x in ColdFire/68K Microcontrollers and Processors

USB device Multipacket on mcf537x

sbouvet — Mon, 04 Oct 2010 23:30:51 GMT

Hello,

I am working on mcf5373 and I have some problem with the USB OTG in mode device.

My problem is the following. The host USB, where i m connected send me a multi-packet but i don't know how many packets I do wait.

In my source code I initialize ep_qh and dtd with 64 bytesmax,

In my interrupt, I acknoledge the Interrupt, I read the 64 octets received and i initialise the dtd to read 64 bytes.

this work for the first packet but after i have no interrput to read the following packets.

Could you help me?

Thanks

TomE — Tue, 05 Oct 2010 11:45:28 GMT

You may be working from this already, but check section 4.7.1 of:

available from:

I don't know more than that.

sbouvet — Tue, 05 Oct 2010 20:01:57 GMT

Hello,
I found my mistake. I do not initialize the ZLT bit of the associate EndPoint.

Thanks for your help.