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Re: LPC2106 Branches to 0x7FFFE254 on interrupt

2004-09-30 by Gus

> This is NOT being caused by an exception. All of the exceptions 
> except IRQ point back to itself in the startup code.

what happens when you make IRQ point to itself? If this locks the 
LPC at IRQ vector then you have something wrong in your interrupt 
driver code.

--- In lpc2000@yahoogroups.com, "helicopterproject2003" 
<helicopterproject2003@y...> wrote:
> We are developing on a Ashling EVBA7 with a LPC2106 using the IAR 
> EWARM 4.11A. We are using nesting interrupts. We have some code 
> which seems to run fine on 1 of the EVBA7 boards but branches to 
> 0x7FFFE254 on the other 2 as soon as interrupts are enabled. They 
> are all using the 14.745MHz xtals and the code is setting up and 
> using I2C, Timer0 and Timer1. We are setting the PLL to run at 
> 58.98MHz and the VPB is set to 1 to run the VPB at the same speed 
as 
> the processor. The same problem occurs whether we run the code in 
> flash or RAM.
> 
> I have tried everything a can think of to track down the cause but 
> so far no luck.
> 
> This is NOT being caused by an exception. All of the exceptions 
> except IRQ point back to itself in the startup code.
> 
> Does anyone know what may be causing this to happen.
> 
> Thanks
> Rick

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