i am looking for a way to trigger a interrupt event when i send a serial command to a pic from a pc serial port. i plan on using the serin and serout commands in the program.
Serial Interrupt
i am looking for a way to trigger a interrupt event when i send a serial command to a pic from a pc serial port. i plan on using the serin and serout commands in the program.
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Re: Serial Interrupt
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Re: Serial Interrupt
Although it is possible to do what you say (if you pick your RECEIVE pin on Port B), I really wouldn't use SERIN/SEROUT. If your device has a hardware serial port - use it. Interrupts are far, far simpler that way.
If you have no hardware serial port, and you absolutely must have an interrupt, I wrote some code 2-3 years ago that gets the job done. It might take me awhile to find it, though.
But do you best to use the hardware first....
Charles Linquist
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Re: Serial Interrupt
Thank you for the suggestion. By going with the hardware serial port i would need to use another chip like a max232, right? I have had pretty good luck with serin2 and serout2 in the past; I think i will give the portb interrupt a try.
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Re: Serial Interrupt
Not true
Some chips, like the 18F2321 that I like to use for small projects, have two bits (BAUDCON.5 and BAUDCON.4) that let you invert the hardware serial port for both transmit and receive. No MAX232.
Charles Linquist
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Re: Serial Interrupt
In this case you need to cautious as the level will not be true RS-232 but still TTL.
Ioannis
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