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guest
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| access to raw interrupts |
 Posted: Wed Apr 07, 2004 1:45 am |
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Just downloaded CCS, and trying to port a small 12F675 app from HI TECH C. I want to be able to handle the raw interrupt (in C code of course), but the manual seems to indicate I can only access specific interrupts via the #int_xx directives. This seems a bit clunky to me, I don't want the overhead of the library ISR, I just want to handle the interrupt and deal with the hardware directly myself.
How do I do this? How do I set up an interrupt function that handles an interrupt without the CCS provided code?
cheers |
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Ttelmah
Guest
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| Re: access to raw interrupts |
| Posted: Wed Apr 07, 2004 2:07 am |
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| guest wrote: | Just downloaded CCS, and trying to port a small 12F675 app from HI TECH C. I want to be able to handle the raw interrupt (in C code of course), but the manual seems to indicate I can only access specific interrupts via the #int_xx directives. This seems a bit clunky to me, I don't want the overhead of the library ISR, I just want to handle the interrupt and deal with the hardware directly myself.
How do I do this? How do I set up an interrupt function that handles an interrupt without the CCS provided code?
cheers |
Look at #int_global.
Whatever you put in this routine replaces the global interrupt handler. Look also at the example file:
ex_glint.c
Which shows an example of using this.
Best Wishes |
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