topic Re: LPCOpen USB CDC sample not work with my LPC1549 custom board in LPC Microcontrollers

LPCOpen USB CDC sample not work with my LPC1549 custom board

lpcware — Wed, 15 Jun 2016 17:06:29 GMT

Content originally posted in LPCWare by hardtail on Mon Mar 02 07:38:00 MST 2015
HI, guys

I made custom board with LPC1549. the USB-ISP works as expected in this hardware.However, when the USB-CDC sample run, Windows doesn't recognize it.

I added LED blink code using SysTick to this sample, and I make sure runing this code. So LPC1549 was not hang.

I tried sample of USBDevice for Mbed. it code run without problem. so i think that hardware doesn'd have problem.

Does anyone have any ideas on what I can try?

Re: LPCOpen USB CDC sample not work with my LPC1549 custom board

lpcware — Wed, 15 Jun 2016 17:06:30 GMT

Content originally posted in LPCWare by R2D2 on Mon Mar 02 11:09:09 MST 2015

Quote: hardtail
Does anyone have any ideas on what I can try?

Compare your hardware with LPC1549 LPCXpresso Board :)

Re: LPCOpen USB CDC sample not work with my LPC1549 custom board

lpcware — Wed, 15 Jun 2016 17:06:30 GMT

Content originally posted in LPCWare by hardtail on Tue Mar 03 01:08:07 MST 2015
Thank you for your fast answer R2D2.

This image is a part of my hardware's schema. My hardware is not connect RTCXOUT, RTCXIN and VBAT. That is Major difference between LPC1549 LPCXpresso Board and my hardware. but I think that peripheral RTC has nothing to do with USB-CDC.
[img]http://i.gyazo.com/5ed64eb3468d24caa55e75b6c33a6dcb.png[/img]

Re: LPCOpen USB CDC sample not work with my LPC1549 custom board

lpcware — Wed, 15 Jun 2016 17:06:31 GMT

Content originally posted in LPCWare by R2D2 on Tue Mar 03 02:18:44 MST 2015

Quote: hardtail
This image is a part of my hardware's schema.

ISP Pins?

Which sample are you using in detail? Which board layer (http://www.lpcware.com/content/faq/how-do-i-port-lpcopen-new-baord)?

What's showing your Device Manager? Which Windows are we talking about?

CDC is working fine here with Win7 / Win8 and Win10 :O

Note: LQFP48 is using PIO0_16 instead PIO1_11 as VBUS, so a wrong Pin muxing in board_sysinit.c will keep your USB from working :p

Re: LPCOpen USB CDC sample not work with my LPC1549 custom board

lpcware — Wed, 15 Jun 2016 17:06:31 GMT

Content originally posted in LPCWare by hardtail on Tue Mar 03 07:49:06 MST 2015
Thank you for your answer R2D2 again.

I rewrote code about PIO0_16 as VBUS in board_sysinit.c. Then it work as expected!

I solved the problem with your advice.

many thanks!!