LPC11U68 USB problem with large messages

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

LPC11U68 USB problem with large messages

503 Views
lpcware
NXP Employee
NXP Employee
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.
Labels (1)
0 Kudos
Reply
3 Replies

422 Views
lpcware
NXP Employee
NXP Employee
bump
0 Kudos
Reply

422 Views
lpcware
NXP Employee
NXP Employee
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
0 Kudos
Reply

422 Views
lpcware
NXP Employee
NXP Employee
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
0 Kudos
Reply