[GPS_Standard] Other frequencies

[Glenn Elmore]

Jim,
Have a look at the equates:
ccp_160mhz_h                EQU 0x68                ;when frequency 
counted is exactly 160MHz, OLD_CCPR1 reads 26624, or 0x6800
ccp_160mhz_l                EQU 0x00                ; "
ccp_80mhz_h                 EQU 0xB4                ;when frequency 
counted is exactly 80MHz, OLD_CCPR1 reads 46080, or 0xB400
ccp_80mhz_l                 EQU 0x00                ; "

The first is for 10 MHz OCXO, the second for 5 MHz. each is counting for 
16 seconds.

Glenn n6gn


On 03/14/2013 05:07 PM, Jim D wrote:
> I am very impressed with the design and function of Bertrand's design.
>   It is working superbly even with my shaky hands doing the
> construction.
>
> I would like to train an OCXO of a different frequency but have a
> question.  I have read through the .asm file and am trying to figure
> out where in the code the frequency readout values are stored.  Can
> someone help me with changing this value.  I understand how the value
> is computed and what the new "count" should be just can't seem to find
> where the 0x6800 value is stored.
>
> Thanks and 73,
> Jim
> JG1KGS
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