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Help with pic18f4520 and sinewave generator???

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mohideen

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Hi all,
Well, my project is about the pic18f4520.
I have a sinewave as my input to my project board which consist of the pic18f4520.
My question isI need to create a program to count the number of positive waves from the sinewave in a period of 1min.

How do i do that??? Thanks...
 

first convert the sinewave to a squarewave usin some opamp like 741 or tlo72..make vcc 5v ok.then program pic as a counter.i think u can use ccp module in pic18 for that.input the squarewave to the pic..done
 

I am nt supposed to use any opamps...
and how do i program pic as a counter???
 

whats the specification of ur sinewave

---------- Post added at 16:09 ---------- Previous post was at 16:08 ----------

okkk u can use a diode like in4148 to clip of negative half cycle...are u from kerala
 

The frquency sinewave is produced from a function gereator...
It would act as a heart signal...
and i am required to count the number of heartrate in one minute...
That is my aim of my project
 

ok then..there is timer0 in the pic u can program it as a counter..set the timer0 clk source bit as 1 then it will count on external pulse applied at
T0clk pin ok
 

do u have a program for the counter...
Becose i have nvr encountered a counter in pic before...
Thx
 

oooo i havent used it for any of projects that i had done..i used to encounter usually i2c or usart.mm counter arent used much.by the whats ur compiler for pic
 

I am not so sure of the compiler... I think it is MPLAB ICD 2
 

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