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Re: FFT routines Kategorie: Programmierung Assembler (von PeterS - 28.02.2013 17:28)
Als Antwort auf Re: FFT routines von PepeV - 28.02.2013 15:41
> > > Peter: can you explain why interrupts mess up my routines? Is it that interrupts > > > trigger actions that change registers while my routines are running? Is it the Y- > > > register? > > > > Hello Pepe, > > > > you are right. I just had forgotten that the Y-Register should better not be changed, > > because it is normally used as Data Stackpointer. The interrupt routines are using it > > to save the contents of registers. > > > > Regards, > > > > Peter > > > Hi Peter, > > There is a remark about the use of the Y-register in the English manual ('do not > use it') but I was uncertain wether that also holds when the register is saved with > push and pop. > The FFT-routines use a lot of (pointer) variables so I can hardly do without the > Y-register. But what is the effect on the program flow when I disable global > interrupts? Will that do any damage? Are there any side effects? There is no damage. The only possible side-effect is that that the Timer Interrupt could be delayed, and the clock, multitasking & servos might be not accurate. Regards, Peter > > Regards, > Pepe
Antwort schreiben Antworten: Re: FFT routines (von PepeV - 28.02.2013 21:26)