Dominique Dumont
and 1 contributors

NAME

Config::Model::models::LCDd::hd44780 - Configuration class LCDd::hd44780

DESCRIPTION

Configuration classes used by Config::Model

generated from LCDd.conf

Elements

Backlight

If you have a switchable backlight. Optional. Type uniline.

default value :

no

Brightness

Set brightness of the backlight (lcd2usb and usb4all): Brightness is the brightness while the backlight is set to 'on'. Optional. Type integer.

upstream_default value :

800

CharMap

Character map to to map ISO-8859-1 to the LCD's character set

(hd44780_koi8_r, hd44780_cp1251, hd44780_8859_5 and upd16314 are possible if compiled with additional charmaps) Optional. Type enum. choice: 'hd44780_default', 'hd44780_euro', 'ea_ks0073', 'sed1278f_0b', 'hd44780_koi8_r', 'hd44780_cp1251', 'hd44780_8859_5', 'upd16314'.

upstream_default value :

hd44780_default

ConnectionType

Select what type of connection. See documentation for available types. Optional. Type uniline.

default value :

4bit

Contrast

Set the initial contrast (bwctusb, lcd2usb, and usb4all) Optional. Type integer.

upstream_default value :

800

DelayBus

You can reduce the inserted delays by setting this to false. On fast PCs it is possible your LCD does not respond correctly. Default: true. Optional. Type uniline.

default value :

true

DelayMult

If your display is slow and cannot keep up with the flow of data from LCDd, garbage can appear on the LCDd. Set this delay factor to 2 or 4 to increase the delays. Default: 1. Optional. Type uniline.

upstream_default value :

2

Device

Device of the serial, I2C, or SPI interface Optional. Type uniline.

upstream_default value :

/dev/lcd

ExtendedMode

If you have an HD66712, a KS0073 or another controller with 'extended mode', set this flag to get into 4-line mode. On displays with just two lines, do not set this flag. As an additional restriction, controllers with and without extended mode AND 4 lines cannot be mixed for those connection types that support more than one display! Optional. Type uniline.

upstream_default value :

yes

KeepAliveDisplay

Some displays (e.g. vdr-wakeup) need a message from the driver to that it is still alive. When set to a value bigger then null the character in the upper left corner is updated every <KeepAliveDisplay> seconds. Default: 0. Optional. Type uniline.

upstream_default value :

0

KeyMatrix_4_1

If you have a keypad you can assign keystrings to the keys. See documentation for used terms and how to wire it. For example to give directly connected key 4 the string "Enter", use: KeyDirect_4=Enter For matrix keys use the X and Y coordinates of the key: KeyMatrix_1_3=Enter. Optional. Type uniline.

default value :

Enter

KeyMatrix_4_2

Optional. Type uniline.

default value :

Up

KeyMatrix_4_3

Optional. Type uniline.

default value :

Down

KeyMatrix_4_4

Optional. Type uniline.

default value :

Escape

Keypad

If you have a keypad connected. You may also need to configure the keypad layout further on in this file. Optional. Type uniline.

default value :

no

Lastline

Specifies if the last line is pixel addressable (yes) or it controls an underline effect (no). Optional. Type boolean.

upstream_default value :

yes

LineAddress

In extended mode, on some controllers like the ST7036 (in 3 line mode) the next line in DDRAM won't start 0x20 higher. Optional. Type uniline.

upstream_default value :

0x20

OffBrightness

OffBrightness is the brightness while the backlight is set to 'off'. Optional. Type integer.

upstream_default value :

300

OutputPort

If you have the additional output port ("bargraph") and you want to be able to control it with the lcdproc OUTPUT command. Optional. Type uniline.

default value :

no

Port

I/O address of the LPT port. Usual values are: 0x278, 0x378 and 0x3BC. For I2C connections this sets the slave address (usually 0x20). Optional. Type uniline.

default value :

0x378

RefreshDisplay

If you experience occasional garbage on your display you can use this option as workaround. If set to a value bigger than null it forces a full screen refresh <RefreshDiplay> seconds. Default: 0. Optional. Type uniline.

upstream_default value :

5

Size

Specifies the size of the LCD. In case of multiple combined displays, this should be the total size. Optional. Type uniline.

default value :

20x4

Speed

Bitrate of the serial port (0 for interface default) Optional. Type uniline.

default value :

0

vspan

For multiple combined displays: how many lines does each display have. Vspan=2,2 means both displays have 2 lines. Optional. Type uniline.

upstream_default value :

2,2

SEE ALSO