Ctra/ctrb

scotta

How can I get a cog counter to count at the same frequency
as the main system clock (cnt) ?

I don't need to measure external pins, or drive external pins,
just accumulate at the same rate as CNT.

Scott

deSilva

 frqa := 1
 frqb := 1

scotta

SO that makes something like:

movi ctra, #%0_00011_000
mov frqa, #1
mov phsa, #0

Scott

Paul Baker

The last line isn't necessary. Registers are zeroed before loading the program and psha is not a register which is affected by the initialization process (so it's still 0).

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Paul Baker
Propeller Applications Engineer

Parallax, Inc.

deSilva

No, you should better use

      movi    ctra,   #%0_11111_000           

All you need to know about timers is contained in Table 4.7 in the Manual (or in the data sheet) and in this diagram here (I don't know why it is not in the datasheet - at an exposed place!)

It takes me generally 20 minutes - using it - to explain ALL ASPECTS of the timers... all right: it's a stressy 20 minutes for the audience...

Post Edited (deSilva) : 3/6/2008 8:14:31 PM GMT

scotta

Thanks deSilva !

Scott