probrem with detecting PWM width

[Herry]

Hello everyone..

Now I would like to detect PWM width without use CCP1 and CCP2

my plane is use hardware to detect ..

when input(PIN_A0)=1 // high-->set_timer1(0)

then....

input(PIN_A0)=0// low-->get_timer1

one PWM period is 10ms

but can't work.....It seems something wrong on my code...

plz help me to check....thank you very much

-------------------------------------------------------
#include <18f458.h>
#fuses HS,NOLVP,NOWDT,PUT
#use delay(clock=16000000)
#use rs232(baud=9600,xmit=PIN_C6,rcv=PIN_C7,stream=hostpc)
#use fast_io(A)

int width;

main()
{
setup_timer_1(T1_INTERNAL);
set_tris_a(0xff);

while(input(PIN_A0))
{
set_timer1(0);

while(input(!PIN_A0)) // wait signal until fall
{
width=get_timer1();
printf("pwm with is %d \n\r",width);
}
}

}

[drh]

Try this...