50MHZ Frequency meter + PIC18F452

[pumper]

Hi this is my first post in this forum and I wanted to share something to you
this is part of my last project and this part is a 1-50 mhz frequency meter using pic18f452 and mplab-c18
this can be modified for other ranges.
I hope this will be useful for somebody. 

[SteveyG]

Thanks for sharing. Have you thought about using the capture compare module instead, to avoid the potential inaccuracy in your timer ISR caused by the PIC18's 16 bit read/writes to the timer registers?

[pumper]

If you look at the code before reading the frequency i make the LATA4 out put and make it 0 .
using this the timer 0 clock disabled and in the ISR period we have no clock in the pina3