gnupic: Re: [gnupic] terminal simulation on gpsim?
Subject:
Re: [gnupic] terminal simulation on gpsim?
From:
Scott Dattalo ####@####.####
Date:
9 Mar 2006 21:54:57 +0000
Message-Id: <4410A415.4020102@dattalo.com>
Borut Razem wrote:
> Hi Bill,
>
> you have two possibilities:
>
> - use the usart module (already a part of libgpsim_modules), which uses
> the GUI. See the example in the directory gpsim/examples/modules/usart_gui
> - use the usart_con module, which doesn't use the GUI: it displays the
> received characters directly to the console: gpsim/extras/usart_con
Bill,
I'll second Borut's comments; gpsim does have a terminal emulator that
will accept RS232. An example of its usage can be found in
regression/usart_test/
The key things to note is that there are four attributes in the Usart
module. For example, suppose you name the usart module U1:
module load uart U1
Then there are 4 attributes named: U1.rxbaud, U1.txbaud, U1.rx, U1.tx.
The first two are the receiver and transmitter baud rates. The last two
are the receiver register and transmit register. The receiver register
holds the last byte that was received (and if the module is tied to a
PIC then this should be last byte that was transmitted by the PIC).
Similarly writing a value to the transmit register will initiate a transmit.
You can also get a description of an attribute via help:
gpsim> help U1.tx
TxBuffer: U1.tx=0
UART Transmit Register
Borut,
The usart_con module slipped by without me noticing! Why did you add a
whole new module instead of adding a way for the existing one to direct
its output to a console?
Scott
