"Jack Klein" <ja*******@spamcop.net> wrote in message
news:fn********************************@4ax.com...
On Wed, 1 Oct 2003 20:30:51 -0300, "Pat Cavanagh"
<pc*******@eastlink.ca> wrote in comp.lang.c:
I have been a hobbist C programer for 1 year or so...
I am wondering about PLC's and if they can be programmed in C. If so;
what books are there on the subject? Any help is greatly appreciated..
PLCs are Programmable Logic Controllers, although sometimes other,
similar acronyms are used. They are generally not programmed, having
their own proprietary programming languages provided by their
manufacturers.
Oh, I thought he meant logic programming, as should be done in VHDL or
Verilog. There are people doing it in C, but I think it is a bad idea. C
tends to imply serial execution of statements, but the logic in a circuit is
all active at once. A language that can describe that is somewhat different
than C.
One reason for using C as a hardware description language would be to port
software algorithms to hardware. I believe that if you want a reasonable
implementation an algorithm designed to be implemented in hardware should be
used.
I don't believe that one conforming to the C standard would be very useful,
and a non conforming one would be off topic.
-- glen
