C programming question
cwhiteh at onetel.com
Tue Apr 7 05:38:59 PDT 2009
Valentin Bud wrote:
> Hello community,
> I have built with a micro controller a system of power plugs that can be
> controlled through the serial port.
> I have 2 plugs that i can start/stop and check the status of them. This is
> accomplished by sending different
> letters (eg. A/W) to start/stop one of the plugs and another set of letter
> for the other plug and one letter
> to check the status.
> Taking into account the fact that my C skills are almost 0 how complicated
> would be to write a program
> so I can control that micro controller through the serial port. Or is there
> some kind of program that can
> read/write from/to the serial port from the command line. I don't want an
> interactive program like minicom,
> just a program that connects and send a command (a letter in my case) to the
> serial port.
> Why not minicom (or any other program like it)? My goal is to be able to
> start/stop the plugs using a web interface.
> I have tried using minicom and background it but when i log out minicom
> closes. If minicom is started i can
> send commands to ttyd0 with echo, but i can't read anything from serial.
> Now back to my original question, how hard/complicated will it be to write
> a C program to control the micro controller
> through the serial port.
> Of course on FreeBSD :).
There are some things here http://www.vitsch.net/ which might be useful
see lampd, lampgui and An 8-output solid state mains-switch. It's all
pretty old but then so are serial ports :)
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