pulsin again!anyone plz help!

[engineer7]

sorry its a 2400 microsecond header so divide by 2 microsecond get 1200!!!!

[engineer7]

oh yes the header should be
header<1000
n header >1350

but i have tried wid this..
its still not working.....

[bogdan]

-Turn off the Analog to Digital converter
-Comparators Off
-Set a maximum count for Pulsin: DEFINE PULSIN_MAX 1350

[engineer7]

sir i dont think that there would be any point of turning adc off.because i am using portb for input and it is not an analog port in pic 16f877a.in this pic only porta is the analog one!!!

[Archangel]

Hello,
I have to ask what exactly is your circuit doing or not doing? Does it do anything ?
Does it flash the LED ? This question next is not designed to offend you . . . Have you checked all of your connections for errors and continuity? Breadboard errors trip me up regularly as do poor connections caused by internal corrosion in the breadboards. You buy one, and unbeknownst to you, it sat on the dealer's shelf for ten years . . . and all the contacts are corroded. I have disassembled some that were really scuzzy.
One more thing, I think portB inputs default to weak pull ups on, turn them off in the option register.
EDIT: Nope default off. Easy to check with a hi impedance voltmeter though.

Last question: are you measuring a high pulse or a low pulse? State 0, indicates a low pulse, is that correct?

[engineer7]

thanku archangel sir for replying.

now the basic purpose of my project is to turn a relay on or off using sirc(sony protocol).

for this i need to decode just two keysne for on and one for off.or maybe just one key that if a user presses a button 5v appear on output pin and if it presses the same button then it turns off!!this is one point...

the next point is that the above code is working for

if IRBUTTON >=0 and IRBUTTON < 255 then
 
 
but not working for 
if irbutton=16 then high sony led '16 is for channel up

it is not working for this the above command
this is the second point...


and the third point is that i dont understand this
One more thing, I think portB inputs default to weak pull ups on, turn them off in the option register.
EDIT: Nope default off. Easy to check with a hi impedance voltmeter though... cant understand this

[Archangel]

OK, RE: I Dont understand . . .
Just a small argument with myself . . .
Let me explain my thought process, If the weak pullups were turned on, then applying voltage to that pin might go unnoticed by the MCU because voltage is already present . . .
Let me ask you this, can you output the value of pulsin to an LCD display or to your computer to find out its value, or flash an LED the number stored therein ?
That might give you some insight as to what is going on.
EDIT:

but not working for
if irbutton=16 then high sony led '16 is for channel up

NOT IN POSTED CODE ! Maybe it never gets there, please post
your code, use code tags as shown in the edit explanation at
the bottom of your edited last post