Yahoo Groups archive
Thread
2006-04-19 by anish n
hello, i want to generate an interrupt from TMR0 every 4secs; and register a FIQ handler for it. could any one please help me with this. i am using GNU as assembeler. Anish N; aanishn@... --------------------------------- Jiyo cricket on Yahoo! India cricket Yahoo! Messenger Mobile Stay in touch with your buddies all the time. [Non-text portions of this message have been removed]
2006-04-19 by Andrew Berney
Is there a reason you're doing it in assembler? It's fairly straightforward in C that's all. Andy
-----Original Message----- From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com]On Behalf Of anish n Sent: 19 April 2006 06:51 To: lpc2000@yahoogroups.com Subject: [lpc2000] help coding ISR in asm hello, i want to generate an interrupt from TMR0 every 4secs; and register a FIQ handler for it. could any one please help me with this. i am using GNU as assembeler. Anish N; aanishn@... --------------------------------- Jiyo cricket on Yahoo! India cricket Yahoo! Messenger Mobile Stay in touch with your buddies all the time. [Non-text portions of this message have been removed] Yahoo! Groups Links
2006-04-19 by Robert Adsett
Quoting anish n <aanishn@...>: > i want to generate an interrupt from TMR0 every 4secs; and register a > FIQ handler for it. could any one please help me with this. i am > using GNU as assembeler. While I'd do the prologue and epilogue in assembler there is no reason to not do the main body in C. Also no reason to use FIQ over IRQ given the information you've presented so far. 0.25 Hz isn't exactly pushing the performance limits of these micros. Take a look at the newlib-lpc support in the download section at http://www.aeolusdevelopment.com/ That has an interrupt epilogue and prologue implementation. Also some other interrupt utility setup routines (VIC etc..) Robert