LPC55S28-EVK USB0 ISP mode not working

philippe_michon — Tue, 08 Feb 2022 10:38:42 GMT

Hello

I'm experimenting with the LPCxpresso55S28-EVK and was now testing the ISP functionality. I've now noticed that the USB ISP mode only works when using USB1 and not on USB0.

Pressing button ISP while plugin in P10 (USB0) doesn't have any response on my PC.

Pressing button ISP while plugin in P9 (USB1 both FS and HS) does work, the drivers are loaded and the device is available.

On my design I use only the USB0 and not USB1 , and the ISP mode is necessary for us

component présent on the evaluation Bord => lpc55S28jdb100 rev is SD19271B.

component présent on my bord => lpc5526jev98 BGA rev is SD20381B

How activate the USB0 in ISP mode ?

There is an existing topic with a similare problem "LPC55S69-EVK USB0 ISP mode not working" is the same problem ?

regards

Re: LPC55S28-EVK USB0 ISP mode not working

Alice_Yang — Wed, 09 Feb 2022 08:24:18 GMT

Hello,

We don't recommend use USB0 ISP mode, about detail please have a look at:

https://community.nxp.com/t5/LPC-Microcontrollers-Knowledge/LPC55-Don-t-Use-ISP-USB0-for-firmware-update/ta-p/1277983

Alice

topic Re: LPC55S28-EVK USB0 ISP mode not working in LPC Microcontrollers

LPC55S28-EVK USB0 ISP mode not working

Re: LPC55S28-EVK USB0 ISP mode not working