Lpc2000

Bruce,

I tried debugging the below code using the Keil MicroVision3 
debugger. 

	/* Configuring EXTMODE and EXTPOLAR    */
	VPBDIV=0x0;
	EXTMODE=0x1;
	VPBDIV=0x1;

	VPBDIV=0x0;
	EXTPOLAR=0x1;
	VPBDIV=0x1;

	VPBDIV=0x0;				

It works fine on my end. Please dont single-step through these 
instructions. You need to place a breakpoint at the instruction 
following

        VPBDIV=0x0;

When this breakpoint is hit, on the Memory Window of the debugger, 
EXTMODE and EXTPOLAR  should reflect 0x1 

Best Regards,
Philips_apps

--- In lpc2000@yahoogroups.com, Bruce Paterson <bruce@t...> wrote:
> jbhoudry wrote:
> > 
> > I have the same problem, impossible to put 1 in EXTPOLAR and 
EXTMODE 
> > for EINT0 (no problem for 1 to 3). I program all the 
recomendations 
> > from philips :
> > Before writing to the EXTMODE and EXTPOLAR registers,
> > 1> Write 0x0 to VPBDIV 
> > 2> Then write the desired value to EXTMODE or EXTPOLAR register. 
> > 3> Then write the same value to VPBDIV ( additional step)
> > 4> Restore the VPBDIV to the previously saved value or simply 
write 
> >    to the register again with the desired value.
> > 
> > I test on 2 LPC2294 the same, so now i use IT capture 0 timer 1 
> 
> Could Philips urgently confirm or not this EINT0 edge problem 
exists on 
> a LPC2124 ?
> 
> Just about to change a layout to use EINT0 in edge sensitive mode 
> (wasn't using it at all before) to WAKEup out of sleep mode, so I'm 
not 
> in a position to test this till it's all too late !!
> 
> -- 
> Cheers,
> Bruce
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