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Moved pcd8544 driver from Device/Display to lcdbridge

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Chris 2014-08-13 03:31:46 +02:00
parent ec4e5bd6ab
commit e79dc0c0cd
1 changed files with 0 additions and 115 deletions
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lib/Device/Display/Pcd8544Device.php
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<?php
/*
* Copyright (C) 2014, NoccyLabs
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*/
namespace NoccyLabs\Gpio\Device\Display;
use NoccyLabs\Gpio\Device\Device;
class Pcd8544Device extends Device
{
protected function configure()
{
$this
->setName("pcd8544")
->setDescription("Philips PCD8544 LCD Display Driver")
->addPin("dc", "data/command")
->addPin("sce", "chip select")
->addPin("scl", "clock")
->addPin("sda", "data")
->addPin("res", "reset")
->addPin("bl", "backlight")
;
}
protected function startup()
{
}
public function setBacklightState($state)
{
$this->bl->setValue((bool)$state);
}
public function initialize()
{
$this->lcdInit();
}
public function lcdSend($byte, $command=false)
{
// assume clk is hi
// Enable display controller (active low).
$this->sce->setValue(0);
$this->dc->setValue((int)$command); // command or data
$this->shiftOut($this->sda, $this->scl, $byte);
// Disable display controller.
$this->sce->setValue(1);
/*
if (!$command) {
$this->cx++;
if ($this->cx > (LCD_X_RES - 1)) {
cx = 0; cy++;
#ifdef PCD8544_FIX_YALIGN
// Soft wrapping when FIX_YALIGN is defined
lcd_cursor(cx,cy);
#endif
}
}
*/
}
public function lcdInit()
{
$this->sce->setDirection("out");
$this->res->setDirection("out");
$this->dc->setDirection("out");
$this->scl->setDirection("out");
$this->sda->setDirection("out");
$this->res->setValue(1); // set RES
$this->sce->setValue(0); // reset SCE
$this->res->setValue(0); // pull RES low
$this->res->setValue(0); // and back hick
// Send sequence of command
$this->lcdSend( 0x21, true ); // LCD Extended Commands.
// lcd_send( 0xC8, true ); // Set LCD Vop (Contrast).
$this->lcdSend( 0x80 | 0x70, true ); // Set LCD Vop (Contrast).
$this->lcdSend( 0x06, true ); // Set Temp coefficent to 2.
$this->lcdSend( 0x13, true ); // LCD bias mode 1:100.
#ifdef PCD8544_FIX_YALIGN
$this->lcdSend( 0x45, true ); // LCD blank - Shift LCD 5 up (row starts at 1)
#endif
$this->lcdSend( 0x20, true ); // LCD Standard Commands, Horizontal addressing mode.
$this->lcdSend( 0x40, true ); // LCD blank
$this->lcdSend( 0x08, true ); // LCD blank
$this->lcdSend( 0x0C, true ); // LCD in inverse mode.
//$this->lcdClear();
}
}