topic How do you use USB as VCOM on NFC Library? in MCUXpresso IDE

How do you use USB as VCOM on NFC Library?

larry1 — Sat, 02 Nov 2019 16:35:11 GMT

Hi, I am new to NXP development. I have the Basic Discovery Loop of NFC Reader Library running on CLRC663Plus demo board CLEV6630B with uP LPC1769. It reads tags, and I want to send tag UIDs out via the USB serial port. The USB port seems inactive - it does not enumerate when I plug it into my PC. I see lpc_chip_175x_6x/inc/usbd and the HMI profile but no UART or VCOM profile.

Is there an example or anything of setting up a virtual com port (VCOM) on this platform?

Re: How do you use USB as VCOM on NFC Library?

FelipeGarcia — Tue, 05 Nov 2019 21:31:33 GMT

Hi Larry,

I recommend you to check the usbd_lib_cdc example from our LPCOpen library. This example demonstrates how to use USBD LIB stack to creates a virtual comm port. You can download it from the following link.

https://www.nxp.com/design/microcontrollers-developer-resources/lpcopen-libraries-and-examples/lpcopen-software-development-platform-lpc17xx:LPCOPEN-SOFTWARE-FOR-LPC17XX

Or if you have MCUXpresso already install in your PC you can import the project from the following path:

C:\nxp\MCUXpressoIDE_11.0.1_2563\ide\Examples\LPCOpen\lpcopen_2_10_lpcxpresso_nxp_lpcxpresso_1769.zip

Hope it helps!

Best regards,

Felipe

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Re: How do you use USB as VCOM on NFC Library?

larry1 — Tue, 05 Nov 2019 21:49:36 GMT

Got it, thank you. I would never have found that without guidance.

Larry

Re: How do you use USB as VCOM on NFC Library?

angel_fuentes — Wed, 13 Nov 2019 15:58:38 GMT

Hi Larry, i have the same problem like you,

did you make usbd_lib_cdc works with JTAG LPC-LINK2 connected ?

did you make usbd_lib_cdc works without code modifications?

did you make usbd_lib_cdc works without special MCUXpresso IDE debug configurations?

Thank's

Angel

Re: How do you use USB as VCOM on NFC Library?

larry1 — Wed, 13 Nov 2019 17:12:49 GMT

Sorry, Angel, I have not tried it yet. Other things became more important.

Larry