Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
If you know what is ISR then other things related to ISR are compiler specific. Generally every compiler/controller gives the guide lines to handle the interrupts.
I am mentioning here some general guideline irrespective of compiler / controller:
• ISRs cannot return a value.
• ISRs cannot be passed parameters.
• On many processors/compilers, floating-point operations are not necessarily re-entrant. In some cases one needs to stack additional registers. In other cases, one simply cannot do floating point in an ISR.
• Furthermore, given that a general rule of thumb is that ISRs should be short and sweet, one wonders about the wisdom of doing floating-point math here
• In a vein similar to the third point, printf() often has problems with reentrancy and performance. So avoid it ISR.
Added after 7 minutes:
And last of all you should take care about the thing that whenever one ISR runs disable all other interrupts.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
