I just wrote a little code using Posix standards under Ubuntu with g++
for my compiler. Looks like USB is treated as a normal stream of
characters. The most difficult part was finding my USB thumb drive in
the file system. Under Ubuntu it is in the /media folder. Once I
located it I was able to read from it, and write to it, using
straightforward code. The W1 wattmeter should react the same way.
Write a trap to catch the data packet then a little code to parse it
however you like. I did not know it would be so simple: open(), read(),
write(), close().
Since Macs are running Linux, with enhancements, writing code to catch
the wattmeter's data stream should not be difficult. I assume you can
send it commands too. You will need to determine how a data packet is
formed but that is part of the fun.
73 and GL,
Kevin. KD5ONS
On 9/4/20 2:46 PM, James Bennett via Elecraft wrote:
I just ordered the nifty little W1 Wattmeter. I see that it can supply serial
data to an external program, and that there is a free download of a Visual
Basic program on the Elecraft web site. I use a Mac and a Raspberry Pi and do
not have VB on either, nor do I want to. I’m fairly proficient in several other
programming languages and am thinking that I might “roll my own”, starting on
the Mac.
I know that this is a stretch, but has anyone done this? I know - hahahaha… OK,
how about anyone out there who has read serial data (coming over USB with the
Elecraft Serial->USB cable? Any pointers or links to documentation on how to do
that?
Jim / W6JHB
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