Trying to make a frequency counter using CCP1

[sigmunt]

Hello ,

I'm trying to make a frequency counter using this technique:

Main routine to update the 7 Seg display.

Timer2 to make a timebase near 1 Second , and display the counter,
and CCP1 to capture the Input Signal and increasing the Counter.

I was expecting to only receive an interrupt when the CCP1 overflow 65536 , and just have to multiply the value to obtain the final frequency

But instead, the pic interrupts at each count on the CCP1 pin, using too much CPU ( after 30 000/sec pulses the PIC Cpu is at 100%).

I've not found anywhere how to add a prescaler in CCP1 with CCS.
Anyone can help ?

Thanks a lot !

[PCM programmer]

[sigmunt]

Thanks for the Answer PCM !

I'm now able to display frequency 8 times more fast ;)

But I'm still wondering if it is possible to count frequency higher than the oscillator frequency ( up to 40-50mhz ) with a 1 Hz accuracy ?