BS2SX and LCD display

Archiver

Hi everybody,

I'm a new Stamp user from Belgium.
I try to interface a BPI-216 LCD module (from Scott Edwards) on a
BS2SX, but I get very strange results.
It looks like the LCD cannot recognize the commands I send.
The Clear command (characters 254 1) does not work, and when I send a
65 (ASCII code for 'A'), I get something like a funny japanese
character.
The self test of the LCD module is working fine.
Can anybody help me ?
Thanks in advance (and sorry for my english, but I can't find a lot
of people speaking english here !).
Phil.

Archiver

The BS2-SX uses different baudmode values with the Serout instruction
than the original BS2. The BPI-216 example programs are written for
the BS2, so they require a small change:

Change $4054 to $40F0 (for 9600 bps)
-or-
Change $418D to $43FD (for 2400 bps)

Depending on the program you're trying to run, the baudmodes will
either be in a constant definition (like "N9600 CON $4054") or used
directly in a Serout instruction.

Archiver

Phil,
Well it would help if you could provide some source code, I have the same
LCD, here is a very simple program to test the LCD. Simply download it to
your stamp, but note the code is for a BSII and not a BS2SX but I don't
think there will be a problem (well I hope not). Ok here is the code...

'LCD Test Program for the BSII
N9600 con $4054 'Baudmode for 9600 bps inverted
I con 254 ' Instruction prefix value
CLR con 1 ' LCD clear-screen instruction
LINE2 con 192 ' Address of 1st char of 2nd line
LCD con 0 ' Pin LCD is connected to
' Don't forget to change the pin number

pause 1000
serout LCD,n9600,[noparse][[/noparse]I,CLR]
pause 1 ' Clear screen before program starts
serout LCD,n9600,[noparse][[/noparse]"Testing"]
serout LCD,n9600,[noparse][[/noparse]I,LINE2,"LCD"]
END
' End test program



If the LCD is working you should see on the first line "Testing" and on the
second line "LCD". Let us know if that works, if not we can go from there.
Hope this helps.

Chris Shuster

>From: derennep@s...
>Reply-To: basicstamps@egroups.com
>To: basicstamps@egroups.com
>Subject: [noparse][[/noparse]basicstamps] BS2SX and LCD display
>Date: Thu, 13 Jul 2000 20:43:20 -0000
>
>Hi everybody,
>
>I'm a new Stamp user from Belgium.
>I try to interface a BPI-216 LCD module (from Scott Edwards) on a
>BS2SX, but I get very strange results.
>It looks like the LCD cannot recognize the commands I send.
>The Clear command (characters 254 1) does not work, and when I send a
>65 (ASCII code for 'A'), I get something like a funny japanese
>character.
>The self test of the LCD module is working fine.
>Can anybody help me ?
>Thanks in advance (and sorry for my english, but I can't find a lot
>of people speaking english here !).
>Phil.
>
>
>
>
>
>
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