Lpc2000

For posterity..

We believe that changing the crystal from 19.6608MHz to 14.7546Mhz fixed
this problem.  We're chalking it up as one of life's mysteries and
moving on..

James Dabbs, TGA

-----Original Message-----
From: James Dabbs [mailto:jdabbs@...] 
Sent: Wednesday, May 05, 2004 11:33 PM
To: lpc2000@yahoogroups.com
Subject: [lpc2000] Anyone seen this behavior?



I haven't given up diagnosing this, but I thought I'd see if anyone else
has ever seen it..

I power on an unprogrammed LPC2106 on a new target board we're bringing
up, pulling P0.14 low and leaving DBGSEL unconnected.  I then send it a
'?' through its console port at 9600,N,8,1.  The chip echoes this back
to me for about the 1st 10 keystrokes or so, then quits and starts
cycling its UART0 TX pin from high to low about every 5 seconds. Pushing
the reset button starts the whole cycle again.  When it's in "echo mode"
it will actually echo any character back, when it's moving its TX pin
between 0 and 3.3 volts, there is no communication at all that I can
tell.

Deja vu, anyone?  Or is this my own personal alternate reality?

Thanks,

James Dabbs, TGA





 
Yahoo! Groups Links