gnupic: gpsim status
Subject:
gpsim status
From:
Scott Dattalo ####@####.####
Date:
13 Nov 2004 00:18:57 +0000
Message-Id: <Pine.LNX.4.60.0411121436480.20553@ruckus.brouhaha.com>
Those of you monitoring CVS may have seen a few changes in gpsim over the
last couple of weeks. I've been working on attributes and command line
expressions.
Command line expressions are really useful. In previous versions of gpsim,
you could view the contents of a register by typing either:
x reg_name
or
symbol reg_name
If you wanted to change the value of register, you had to type:
x reg_name new_value
With command line expressions, you can examine a register simply by typing
it's name. E.g. to view the contents of the variable named 'failures'
gpsim> failures
failures [0x0c] = 0x84 = 0b10000100
If you want to change its value, you simply write:
gpsim> failures = 0;
Or you can do something like this:
gpsim> failures = temp1 * 2
or
gpsim> failures = temp1 & 0b11110000
-----
Attributes
There have been many significant changes to the way gpsim handles
attributes. At the moment, there's nothing really too visible on the
outside. However, if a module has attributes, it's now possible to control
those via the command line. The only attribute that exists in the new
format is the X,Y coordinate of a module in the browser window. If you
open the breadboard viewer, two floating point attributes called 'xpos'
and 'ypos' are created. You can tinker with them just as though if they
are symbols. Eg.
gpsim> p16f628.xpos
72.00000
Or you can reposition a module using the command line:
gpsim> p16f628.xpos = 100.0
(note, since the attribute is a floating point type, only floating point
constants can be assigned to it - there's no real good reason to make the
attribute a floating point one; this was just the first example I
created).
I plan to resurrect the UART module and instrument it with attributes so
that you'll be able to write stuff like:
U1.txbaud = 9600
U1.txreg = 0xff # send a break
U1.rxreg # display the rx register
U1.status # display the state of the uart module
----
GUI
I've also been tinkering with the gui. All of the changes apply to the
'gui2' CVS tag. So far all that's been done is that the register window
has been redesign so that it no longer uses the gtkextra sheet widget.
It's currently not useable, but it will be soon.
Scott
