Table of Contents
This driver supports the serial “Mini-Terminals” made by Beckmann+Egle:
With LCD4Linux-0.10, the new CompactTerminals are supported, too:
These controllers provide a lot of additional features, and my be extended with various modules: (from left to right: key module, I/O module, LAN module)
Display Section
Display <name> {
Driver 'Beckmann+Egle'
Model <string>
Port <string>
Speed <number>
Contrast <number>
Backlight <0|1>
Icons <number>
}
Parameters
| Driver | 'Beckmann+Egle' |
| Model | see below |
| Size | the CT20x4 can control smaller displays, too. In this case specify <rows>x<columns> here (e.g. “16×2”) |
| Port | serial device the display is attached to (e.g.'/dev/ttyS2') |
| Speed | the baud rate from the display must match this value. Possible values are 1200, 2400, 4800, 9600, 19200, 38400 and 115200 |
| Contrast | initial contrast (0..15) |
| Backlight | initial backlight state (0=off, 1=on) |
| Icons | Number of user-defined chars reserved for Icons (default: 0) |
Models
The driver supports different displays, which can be selected with the Model parameter:
| MT16x1 | !MultiTerminal 16×1 |
| MT16x2 | !MultiTerminal 16×2 |
| MT16x4 | !MultiTerminal 16×4 |
| MT20x1 | !MultiTerminal 20×1 |
| MT20x2 | !MultiTerminal 20×2 |
| MT20x4 | !MultiTerminal 20×4 |
| MT24x1 | !MultiTerminal 24×1 |
| MT24x2 | !MultiTerminal 24×2 |
| MT32x1 | !MultiTerminal 32×1 |
| MT32x2 | !MultiTerminal 32×2 |
| MT40x1 | !MultiTerminal 40×1 |
| MT40x2 | !MultiTerminal 40×2 |
| MT40x4 | !MultiTerminal 40×4 |
| CT20x4 | !CompactTerminal 20×4 |
Plugins
The driver provides the following functions (with a MultiTerminal only!):
| LCD::contrast() | return the current contrast value |
| LCD::contrast(n) | set the contrast to <n> (0..15) |
| LCD::backlight() | return the current backlight state |
| LCD::backlight(v) | switch the backlight on (v=1) or off (v=0) |
| LCD::gpo(n) | return the current state of GPO <n> (0..7) |
| LCD::gpo(n,v) | set the GPO <n> to level <v> (0..255) |
| LCD::gpi(n) | return the current state of GPI <n> (0..7) |
| LCD::adc() | return the current value of the ADC input |
| LCD::pwm(v) | set the PWM output to value <v> (0..255) |
GPO: General Purpose Output \
GPI: General Purpose Input \
ADC: Analog/Digital Converter \
PWM: Pulse Width Modulation \
Example
Display CT20x4 {
Driver 'Beckmann+Egle'
Model 'CT20x4'
Port '/dev/tts/0'
Size '20x4'
Contrast 7
Backlight 1
Icons 1
}