Content originally posted in LPCWare by graynomad on Wed Sep 14 08:10:56 MST 2011
I'm designing a board based on the LPC178x, I need USB and all ADC inputs but there seems to be a clash between USB_VBUS and ADC0_IN[4] and neither can be moved to another pin.
Searching the web I cannot get a definitive answer as whether there is a work around or indeed if VBUS is really needed.
The manual says
Quote:
USB_VBUS — Monitors the presence of USB bus power.
This signal must be HIGH for USB reset to occur.
Does this mean that once the chip (and USB) is booted I can use that pin for my ADC?
I can't believe they would assign two important functions to the pin.
______
Rob
