lpcware

USB detection issue for LPC1857

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by shweta.kosamkar on Mon Jun 15 23:05:13 MST 2015
Hi All,

I am using LPC1857 USB in Host mass storage class. The issue I am facing is, if I power cycle the board within 1 sec (Switched off the system and switch it on within 1 sec), my system is not able to detect USB device. It resets the port permanently.
                I tried one thing i.e. make the USB power on (by turning on the regulator used for supplying power to USB) and wait for some delay about 500msec and then start initialize the USB. It works for some board, but not for all.

                Can you please help me on it?

                Thank you in advance.

Regards,
Shweta

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