Lpc2000

Bill,
 
Do the ARM developers use any particular inverter?
 
Curt

-----Original Message-----
From: Bill Knight [mailto:BillK@...] 
Sent: Monday, January 12, 2004 12:25 PM
To: lpc2100@yahoogroups.com
Subject: RE: [lpc2100] Pin detection/driving


Curt
Actually, I don't know.  I don't have an LPC to work with and could not
find the info in the docs either.  I have been doing ARM development
for a while and the "trick" with the FIQ is well known.  In your case
however, it might require the use of an inverter.

-Bill



On Mon, 12 Jan 2004 11:31:19 -0800, Curt Powell wrote:

Bill,

A good thought.  But isn't EINTx active low?  I need to detect low to
high.

Curt

-----Original Message-----
From: Bill Knight [mailto:BillK@...] 
Sent: Monday, January 12, 2004 11:22 AM
To: lpc2100@yahoogroups.com
Subject: Re: [lpc2100] Pin detection/driving


Curt
  Try connecting the READY line to an EINT pin configured as the ONLY
FIQ interrupt, then place the ACTUAL code for the FIQ service routine
(not the LDR PC,... instruction) in RAM at 0x001C.

-Bill Knight
R O SoftWare





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