Hi all,

Recently I am trying to capture pulse duration using Capture module on
CCP1 port and print the frequency to lcd. Configuration, timer
settings, interrupt monitoring etc, everything works as expected
except one thing ; LCD shows ridiculous values for example it gives
'11869' value for a 1kHz PWM input. It is responsive to changes in the
frequency of the applied pwm but not accurate/consistent. This is the
crippled code not to pollute around ; I am currently using MPLAB C18
with a target of 18f2550. I can post the entire code as well but the
mistake lies in this section I suppose ;

void main(void)
{
unsigned char config1=3D0x00,timer_value =3D 0x00;

TRISC =3D 0; //all c ports are output
TRISCbits.RC2 =3D 1; //ccp1 input

SetTmrCCPSrc(T1_SOURCE_CCP);   //Set Timer 1 as source for input capture mo=
dule

	  config1 =3D CAP_EVERY_RISE_EDGE | CAPTURE_INT_OFF ; //configure input
capture for capture on every rising edge and its interrupt off
	  OpenCapture1(config1 );							=09
	  OpenTimer1(0); //start the timer=09

 while(!PIR1bits.CCP1IF);  // Wait for event

 INCAPResult =3D (int)ReadCapture1(); // read result

  display((int)INCAPResult);   // print result on lcd

	while(1);	=09
CloseCapture1();			=09
}

Connections and configurations are all triple checked and they work.
But as I mentioned LCD is not returning correct values. Went over the
code for lots of times without  no luck!

Any ideas ?

Have a nice day.
--=20
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