PIC 18F2620

[clon]

Hey bin neu hier,

Habe ein Problem will mit CCs Compiler einen Interrupt auf dem pic18f2620 programmieren und weiss nicht wie ich das machen kann :S

kann mir hier jemand helfen ?

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I got a Problem, I want so create a Interrupt routine on the pic 18f2620 and I don't know how to handle this problem :S

Is there anyone who can help me ?

lg clon

[Mike Walne]

There are several interrupt programs in the CCS manual, and in the example folder. Those in the example folder are usually complete and compilable.

Mike

[asmboy]

[RoGuE_StreaK]

I currently use the exact same chip, you may find something of use in this thread:
http://www.ccsinfo.com/forum/viewtopic.php?t=43174
it was trouble-shooting an interrupt from Timer0. There's a stripped-down version of the code about 2/3 of the way down the page, which may be a starting point for you.

Running a 20MHz crystal, using
setup_timer_0(RTCC_INTERNAL|RTCC_8_bit|RTCC_DIV_1);
gives an interrupt of 102.4us

setup_timer_0(RTCC_INTERNAL|RTCC_8_bit|RTCC_DIV_2);
gives an interrupt of 51.2us

... and so on.

[clon]

[Mike Walne]

The CCS example EX_SISR.C shows you how to do it.

You WILL have to change the "#include <18F452.h>" line to "#include <18F2620.h>" or your chosen processor if different.

You MAY need to change the "#use delay(clock=20000000)" to suit.

The program is complete and compilable.

Best wishes

Mike

[clon]

[Mike Walne]

Depends on what you are trying to do.

You are asking "How long is a piece of string?".

Give us some clues and we may be able to help.

Mike

[clon]

My problem is that if there is an interrupt my program doesn't go into the isr. :S

[asmboy]

post the code you are having trouble with
and help may become possible

[clon]

I throw all my interrupt idees away haha ... I want to create a polling system so I got a new problem i don't know how to read the buffer date out of my pic16F2620 :S