LPC MicrocontrollersのトピックRe: LPC11U68 USB problem with large messages

LPC11U68 USB problem with large messages

lpcware — Wed, 15 Jun 2016 19:25:03 GMT

Content originally posted in LPCWare by miloje984 on Mon Apr 04 01:37:41 MST 2016
Hi everyone,

I am using LPC11U68 microcontroller and I have problem with USB communication. When I try to send from LPC11U68 to PC I have problem with messages larger than 64 bytes. Everything works fine with smaller messages. Does anyone have something similar with USB peripheral on this LPC device?

Regards, IVan M.

Re: LPC11U68 USB problem with large messages

lpcware — Wed, 15 Jun 2016 19:25:04 GMT

Content originally posted in LPCWare by vtw.433e on Mon Apr 04 01:54:20 MST 2016
You don't say what type of end point you are using, but most likely you are using an endpoint limited to 64 bytes... See http://www.beyondlogic.org/usbnutshell/usb4.shtml

Re: LPC11U68 USB problem with large messages

lpcware — Wed, 15 Jun 2016 19:25:05 GMT

Content originally posted in LPCWare by miloje984 on Tue Apr 05 01:20:43 MST 2016
Thank you for your answer. I use BULK transfers. I realized that I must separate large packets, to 64 byte sized, cause my code don't do that, at this moment, and that is a problem.
Regards

Re: LPC11U68 USB problem with large messages

lpcware — Sun, 19 Jun 2016 01:07:11 GMT

bump