| Re: Interrupt handling Kategorie: Programmierung Assembler (von PeterS - 13.04.2014 10:44) | |
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Als Antwort auf Re: Interrupt handling von Torsten - 3.04.2014 20:39
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> > > > > > > > > Would it be possible to replace that routine with another one, e.g. > > > > > > by changing the interrupt vector? > > > > > > > > > > I would warn urgently against that unless you knows the system > > > > > very exactly. For polling the interrupt flag you need only few > > > > > system clocks. > > > > > > > > You are right, changing the interrupt vectors can have ugly side effects. > > > > But except the timer interrupt that is used for multitasking, servo and clock, > > > > experimenting with the other interrupts should not be fatal. > > > > > > > > Regards, > > > > > > > > Peter > > > > > > Hallo Peter, > > > > > > that would mean, Pepe's proposal is possible? > > > > Yes. You must know what you are going to do and write the right assembler > > code. These modified interrupts are of course then no longer supported > > from the interpreter. > > > > Also it is a clumsy solution, because with every recompile you have to check > > where the assembler routines are, and then patch the vectors at the beginning > > of the interpreter to the addresses. > > > > Regards, Peter > > > > Hallo Peter und Pepe, > > when I understand it right, we only have to change > the file "interp128.bin" before we upload it to the > module? So we have to change the sixth word in the > file for the fourth external interrupt? Please see "Table 23. Reset and Interrupt Vectors" in the Atmel Mega128 Manual. Regards, Peter > > GruÃ? Torsten | |
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