just a thought
use the hardware PWM output then AND that with a hardware serial port.
if you happen to have a spare and gate floating around.

I haven't used the comparator module in a PIC before but I seem to 
recall some of them had an external output that you could use something 
like this I'd imagine.

James Cizek wrote:
>     This was what I was hoping would work, just setting the pin to input to "turn it off"
>   temporarily.  Unfortunately, it doesn't work.  setting the pin to an input in the middle
>   of the code seems not to effect the output at all, I see 38khz on B3 after the command executes.
>   
>   I saw some excellent code from user Jinx a few posts ago that is very nicely setup.  But instead
>   of programming by fumbling around in asm like i usually do, I'm trying to learn PICbasic PRO to blast out
>   a few quick projects (it's amazing how learning a higher level language can sometimes be more difficult)
>   Any other ideas on switching the PWM output on and off ?  I will probably use the TMR's to time
>   the pulse, but I cant get past the actual turning on and off the output yet!  Changing the T2CON
>   resgister does work, but depending on where the output is in cycle, it may leave the output high or
>   low...   Is it an acceptable method to change the TMR2 control and then just low the port to make sure
>   the LED is off??  Doesn't seem to "precise" to me......
>   Thanks for you patience and help as I learn 8-)
>
>   -James 
>  
>   
>
>
>   
>> 2) how about setting the I/O pin to input?
>>
>> -- 
>>
>> Wouter van Ooijen
>>
>> -- -------------------------------------------
>> Van Ooijen Technische Informatica: www.voti.nl
>> consultancy, development, PICmicro products
>> docent Hogeschool van Utrecht: www.voti.nl/hvu
>>
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>>
>>     
>
>   


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