gnupic: quick dumb gpsim/18F question
Subject:
Re: quick dumb gpsim/18F question
From:
Scott Dattalo ####@####.####
Date:
11 Jan 2005 16:44:36 +0000
Message-Id: <Pine.LNX.4.60.0501110835310.2330@ruckus.brouhaha.com>
On Tue, 11 Jan 2005, David McNab wrote:
> Hi,
>
> Can GPSIM simulate a serial port, connected via the USART to pins
> RB6/RB7? If so, how do I send/receive chars to/from this 'port' from
> other applications?
Hi David,
At one time gpsim could simulate the USART. However, that code has
bit-rotted. The problem ties into the I/O port issue that's been discussed
recently. Furthermore, the USART code was originally developed for the
mid-range PIC's and has not been tested (by me at least) for the 18F
devices.
Looking into the future....
One of these days the I/O ports will work again. Also, the USART will work
too. In the modules/ directory is a module for modelling a USART host.
This module is designed to interface to the I/O pins of a processor and
communicate with it using the serial TTL format of the PIC's USARTs. In my
day job I've been working on a PS/2 module which is very similar to the
USART module. The PS/2 module can be controlled either from the command
line (via attributes), from a stimulus, or from a socket interface. All
three of these are extremely useful for debugging and testing a PS/2
interface. One of these days those features will be in the USART module...
Scott
