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Charles Linquist
Joined: 07 May 2005
Posts: 28
Location: Campbell, CA
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| interrupt issue |
 Posted: Mon May 23, 2005 9:23 pm |
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I'm using several interrupts (TMR0, AD, RDA).
Whenever I execute the line:
disable_interrupts(int_RDA);
It seems to disable ALL the interrupts. When I execute the line:
enable_interrupts(int_RDA);
The interrupts start working again.
Why would disabling one interrupt affect all interrupts? |
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Mark
Joined: 07 Sep 2003
Posts: 2838
Location: Atlanta, GA
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| Posted: Mon May 23, 2005 9:49 pm |
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| It shouldn't |
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Charles Linquist
Joined: 07 May 2005
Posts: 28
Location: Campbell, CA
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| Posted: Mon May 23, 2005 9:56 pm |
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I'm thinking that the issue could be because I'm disabling the interrupt INSIDE the ISR. I'm enabling it again before the routine exits.
Is that allowed? |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Mon May 23, 2005 10:19 pm |
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I noticed in another post that you're doing this:
| Quote: | | #use rs232(BAUD=9600,XMIT=PIN_C6,RCV=PIN_C7) |
If you do this and you're shutting off interrupts at various times,
I think it's likely that you're getting a locked-up UART receiver.
You should be doing this:
| Quote: | | #use rs232(BAUD=9600,XMIT=PIN_C6,RCV=PIN_C7,ERRORS) |
You should always do it that way. |
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Charles Linquist
Joined: 07 May 2005
Posts: 28
Location: Campbell, CA
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| Posted: Mon May 23, 2005 11:17 pm |
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Thanks, I had already added that statement.
I found my problem.... I had a "leak" in one of my routines that shut off and re-enabled global ints by mistake.
Right now, I think I should stop trying to add functionality, and focus on style, readability and accuracy. |
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