From my point of view, a VFO completely independant of the personnal computer
is desirable. This can be done with a PIC or other microprocessor with 2
thumbwheel switches for 99 channels (or frequencies) or a two digit display
with up and down selection buttons. Ed!

John Miles wrote:

In article , says...
Greetings!

I would like to know if anyone has been successful developing an
interface for 3 wire serial feed to a PLL: (Clock, data, latch enable)
using a PIC or similar devices. I presently use my computer to control
my VFO. Software is the Code Loader from National.com It works very
well. The speed of the Clock/Data appears to be high and I am wondering
if a PIC could work at the same speed and/or produce the same rise
time.!
If email is sent, please remove the xxx,

Jos! VE2AUC


See the Atmel/Win32 multi-platform implementation of three-wire PLL
programming at http://www.qsl.net/ke5fx/synth.html (direct link to the
software at http://www.qsl.net/ke5fx/synth/synth100.zip).

It's in C++, which is not a problem for the higher-speed Atmel chips but
might not be appropriate for a PIC.

-- jm

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