Lpc2000

Hi,
 
I can confirm problems with GNU ARM interrupt keyword in versions v3.3.1
and previous. See bugzilla
http://gcc.gnu.org/ml/gcc-bugs/2003-10/msg01184.html for the gory
details.
 
The workaround is that you need to do your context save/restore in
assembler before branching to the "C" interrupt handler function (rather
than depending on the GNU compiler to do this when it sees the
"interrupt" keyword.
 
Ashling customers can download a GNU example that shows how to do TIMER0
interrupts from our FAQ page as shown in the below link. The program
toggles a LED that is specific to Ashling's LPC2100 EVBA7 board. 
 
Leon, I'm prepared to give you the source code to allow you to adapt it
to your own board and post it on your site if you like. Email me
directly. All the code is GNU, however, the build is done using our IDE
(AsIDE).
 

Hugh @ http://www.ashling.com/support/lpc2100/ 

-----Original Message-----
From: Curt Powell [mailto:curt.powell@...] 
Sent: 10 December 2003 16:18
To: lpc2100@yahoogroups.com
Subject: RE: [lpc2100] Interrupt works in Keil simulator but not in
target


Helge,
 
Keil uses gnu, correct?  There is an issue with the interrupt keyword in
earlier versions of gnu compiler.  Are you aware of this?  The
workaround is to call an assembler ISR which in turn calls the C
function.  Could this be your problem?  
 
Curt

-----Original Message-----
From: helgefh2003 [mailto:helge.fabricius@...] 
Sent: Wednesday, December 10, 2003 7:18 AM
To: lpc2100@yahoogroups.com
Subject: [lpc2100] Interrupt works in Keil simulator but not in target


Hi,
--------------------------------------
The example project from Keil running Timer0 as interrupt source, 
works in the simulator but in the target there is never an interrupt 
generated. Rewriting it, polling the interrupt flag works both in 
the simulator and the target.

http://www.keil.com/download/files/lpc2100_blinky.zip

Chip used is LPC2106.

Anyone having a clue?

//Helge



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