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Lpc2000

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Message

RE: [lpc2000] Re: Reset of circuit

2004-12-16 by Richard Rauscher

Yes, I've done it on both the 2114 and 2129.
The only difference is that I set WDTC = 0.
 
--rich

	-----Original Message-----
	From: Karl Olsen [mailto:kro@...] 
	Sent: Thursday, December 16, 2004 7:36 AM
	To: lpc2000@yahoogroups.com
	Subject: [lpc2000] Re: Reset of circuit
	
	
	
	--- In lpc2000@yahoogroups.com, "Kerem Or" <k.or@s...> wrote:
	> Then let the watchdog expire. It will reset the chip but will
not 
	change the 
	> state of the reset pin. That means your external hardware (if
you 
	have any) 
	> connected to the LPC reset pin will not get reset.
	
	Has anybody done this successfully?
	
	On my LPC2114, I have tried doing a CPU reset by starting the 
	watchdog and letting it expire.  But when it expires, the CPU
just 
	hangs, without restarting.  P0.14 isn't low, and it hasn't
entered 
	ISP mode.  I'm doing like this:
	
	WDT->WDTC = PCLK_HZ/4; /* Timeout = 1 second */
	WDT->WDMOD = 0x03;
	WDT->WDFEED = 0xAA;
	WDT->WDFEED = 0x55;
	
	At this time I can see WDTV decrementing, and when it reaches
zero, 
	the system just hangs, and interrupt activity stops.
	
	Karl Olsen
	
	
	
	
	
	
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