Hello, I offer you for reading this about interrupt context saving on page 8-11:
http://ww1.microchip.com/downloads/en/DeviceDoc/31008a.pdf SDCC is handling very well the interrupt entry and end point. When I had similar problem like you, I always missing to acknowlege the appropriate flag. Zsolt 2012/7/23 Joel Davidson <j...@prismnet.com>: > Hi there, > > I'm developing some code for a pic16f684, and I'm having a problem > with the interrupt code the compiler is generating. If I manually > edit the asm file and delete all of the code inserted in the isr > to save and restore the state of the W, STATUS, PCL and FSR > registers, and just leave my actual interrupt service code in, > my code is working as expected, as I currently have a semaphore > that gets checked in my main() loop that waits until the isr is > complete. This of course isn't acceptable for my final code. > > When I leave the isr code that saves/restores the state, the > processor appears to hang. > > Also, there appears to be some suspect code generated at the end > of the isr to restore the W register. The save code is: > > MOVWF WSAVE > > but the restore code is: > > SWAPF WSAVE,F > SWAPF WSAVE,W > > Shouldn't the restore code be: > MOVF WSAVE, W > > This isn't the whole of the problem in the interrupt code though, > as changing this doesn't resolve the hang issue. > > I'm running from the most current code base, revision 8053, on > Fedora fc15.i686.PAE. > > Any help or pointers as to what I may be doing wrong would be > appreciated. Thanks. > > Joel > -- > Joel Davidson > Austin, TX > j...@prismnet.com > > ------------------------------------------------------------------------------ > Live Security Virtual Conference > Exclusive live event will cover all the ways today's security and > threat landscape has changed and how IT managers can respond. Discussions > will include endpoint security, mobile security and the latest in malware > threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ > _______________________________________________ > Sdcc-user mailing list > Sdcc-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sdcc-user -- ~~~~~~~~~~~~~~~~ http://galzsolt.zzl.org ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
