Yeah, I used to do a lot of this kind of programming like 20 years ago.
It used to be fairly common for devices like medical scanners and
meteorological data collection instruments to be controlled via a serial
port. I always used ckermit and expect. Just to be sure, I did an apt
search and I see there is still a ckermit package in Ubuntu but there is
also something called gkermit. And I just used expect to automate
connecting to a VPN. So I second the recommendation of those 2 tools.
On 11/23/22 03:25, Willem van der Walt wrote:
Hi,
kermit I think is the easiest.
You might also look at using expect.
Just do a man expect for details.
HTH, Willem
On Tue, 22 Nov 2022, Georgina Joyce wrote:
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Hello All,
I would like to write a bash script to control a Yaesu FT-991A
transceiver. I have been using rigctl a part of the hamlib libraries.
However, I find the command structure difficult and doesn't contain
some of the daily commands like nudging the frequency up in Kilohertz
etc.
I have looked and researched that I can change the tty device baud
rate by using stty with the -speed switch but can't really get my
head around the stty syntax.
I see from a unix stack exchange listing that I can crudely use echo
and cat to the device using 2 console windows. The answer on Stack
Exchange suggests using screen. I recall some members here were a fan
of screen but I have never used it myself.
According to the CAT reference manual. If I send "FA145500000;" as a
set command The transceiver will respond with the same as a read
command. So I want to clean up the responses and put them in human
form. You might note that the radio deals with integers in this case.
But us humans like decimals, so there is some cleaning up the output.
I think I might be able to do that. But it is this issue of sending
commands to the tty device and reading the responses that I haven't a
clue.
Anyone can offer suggestions?
Thanks,
Georgina
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