> ... What is the baud rate to the LCDX Monitor and
Download ports?
Downloads are at 115200. If you choose to use COM1 for I/O in your project, it
will be used for downloads after compiling a project - and it will carry your
COM1 data during execution. You can use the Monitor port in the IDE to see that
data; set its speed to match the speed you choose in your project. I just
loaded the DoorLock demo project and see that it doesn't put any data on
COM1.
> ... What kind of handshaking do the LCDX ports
use?
None. The IDE does, however, toggle DTR (ATN at the LCDX end) to start and stop
the LCDX and to initiate downloads.
> ... Does the LCDX use a null cable?
No, you can plug the DB9M on your USB-RS232 adapter, or a female-to-male serial
extension cable from it, into the DB9F on the LCDX.
> ... Is the LCDX a BX24 or BX35 because the forum
provided conflicting information?
It uses a BX35 whose I/O is dedicated to specific functions and pins on the
LCDX. File LCDXLib.bas, supplied on the CD and available on the Netmedia web
site, describes the I/O assignments and provides functions to use the display
and keyboard.
Tom
Reply by merogman2004●June 3, 20112011-06-03
I received the LCDX in the mail about a week ago. After careful research I
chosed the LCDX because I didn't have the time to write and troubleshoot
low level code to get visual feedback. For a lack of an "Getting Started" for
the LCDX I turned to this forum for hints, clues and answers.
The first 8 hours was trying to figure out where this "Lab Door 2 is Locked
Enter Code > <" came from and why it wasn't addressed in the
Literature. I expected a demo program. I had it connected to the laptop and I
couldn't download to it. Eventually, I wired up the keypad and found some
numbers to put in it for activation. Then it came back.
The second 8 hours was spent pouring over all the supplied and downloaded
literature and researching this forum again for some insight. Maybe the problem
was my win 7 USB to serial cable converter (Win 7 is a story and endeavor in
itself). The USB to serial converter was working fine. Maybe it was the new
serial cable. The cable was working fine. All this time I duplicated my efforts
in 9600 and 19200 baud.
All this time I have been removing and returning power to the LCDX for the lack
of a reset function on the LCDX, which is a very hazardous practice to do in
electronics.
The third 8 hours was spent trying everything suggested on this forum for LCDX.
Nothing worked to allow me to stop the LCDX and download a program. I took out
the digital meter and measure the 12 volt supply to the LCDX. It measured 11.03
volts at the plug, unconnected to the LCDX. Next I went to the 7-12 volt pad
and measured 8.23 volts. I then measured the 5 volt supply and it measured 4.98
volts. I finally went to the ATN Diagnostic and was able to toggle 6.10 volts
as a high and -6.23 volts as a low, repeatedly measured at the LCDX pins. I
then checked my serial cable and it is a straight serial cable and not a null
modem serial cable. Pin 3 on the 9 db connector (center pin) ohms out the other
end (center pin).
My questions are:
What is the baud rate to the LCDX Monitor and Download ports?
What kind of handshaking do the LCDX ports use?
Does the LCDX use a null cable?
Is the LCDX a BX24 or BX35 because the forum provided conflicting
information?
Is there a probability that my LCDX is defective?
OR;
How do I halt the LCDX and download a program to it?
Help, I have one eye above water and I see a log with eyes swimming my way...