The CwLnx Driver
This section talks about using LCDproc with the serial / USB LCDs CW12232, CW12832
and CW1602 by CwLinux.
Features
The CwLinux CW12232 LCDs are graphical LCDs with 122 x 32 dots
that also have a text mode with 20 x 4 characters,
the CW12832 are graphical displays with 128 x 32 dots and a
21 x 4 character text mode,
the CW1602 LCDs are character LCDs that are 16 characters wide and
2 lines high.
The modules can be ordered bare or as part of a kit mounted
on brackets that fit in half-height 5.25" (CW12232 and CW1608)
or 3,5" (CW12832) drive bays.
The mounting brackets optionally feature a 6 button keypad that
makes use of the keypad connector on the display modules.
The kits allow to programmatically switch on/off their backlight.
Newer revisions of the kits also have programmable brighness as well
as 4 general purpose IO ports.
The displays come in 2 variants that differ how they communicate
with the host: The serial modules are connected to the PC using a serial
RS232 connection getting operating power using the standard floppy drive
power connector, while the USB modules only require an USB connection.
For more information see the
CwLinux web site
Configuration in LCDd.conf
[CwLnx]
Model =
{
12232 |
12832 |
1602
}
Select the LCD model [default: 12232;
legal: 12232, 12832, 1602]
Device =
DEVICE
Select the output device to use [default: /dev/lcd]
May be serial device or USB device in serial emulation mode.
Size = ¶meters.size;
Select the LCD size [default: depending on model: 12232: 20x4,
12832: 21x4]
1602: 16x2]
Speed =
{
9600 |
19200
}
Set the the baud rate for communication with the LCD.
If not given, the default is 19200.
Reboot = ¶meters.yesnodef;
Reinitialize the LCD's BIOS [default: no; legal: yes, no]
normally you shouldn't need this
Keypad = ¶meters.yesnodef;
Tells if you have a keypad connected. Keypad layout is currently not
configurable from the config file.
KeyMap_A =
KEY
KeyMap_B =
KEY
KeyMap_C =
KEY
KeyMap_D =
KEY
KeyMap_E =
KEY
KeyMap_F =
KEY
If you have a non standard keypad you can associate any keystrings to keys.
There are 6 input key in the CwLnx hardware that generate characters
from 'A' to 'F'.
Legal values for KEY are Up,
Down, Left, Right,
Enter and Escape.
The following it the built-in default mapping hardcoded in the driver.
KeyMap_A
Up
KeyMap_B
Down
KeyMap_C
Left
KeyMap_D
Right
KeyMap_E
Enter
KeyMap_F
Escape
You may leave it unchanged if you have a standard keypad.
You can change it if you want to report other keystrings or have a non
standard keypad.
keypad_test_mode = ¶meters.yesnodef;
keypad_test_mode permit to test keypad assignment
Default value is no