noccy/php-linux-gpio
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cleaned up gpio and device code, implemented dummy/dry run mode

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This commit is contained in:
Chris
2014-06-19 12:27:31 +02:00
parent 3e4765d071
commit 1449ec643f
8 changed files with 481 additions and 84 deletions
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78
lib/Device/Display/Pcd8544Device.php
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@ -28,12 +28,12 @@ class Pcd8544Device extends Device
$this
->setName("pcd8544")
->setDescription("Philips PCD8544 LCD Display Driver")
->addLogicalPin(0, "dc", "data/command")
->addLogicalPin(1, "sce", "chip select")
->addLogicalPin(2, "scl", "clock")
->addLogicalPin(3, "sda", "data")
->addLogicalPin(4, "res", "reset")
->addLogicalPin(9, "bl", "backlight")
->addPin("dc", "data/command")
->addPin("sce", "chip select")
->addPin("scl", "clock")
->addPin("sda", "data")
->addPin("res", "reset")
->addPin("bl", "backlight")
;
}
@ -46,4 +46,70 @@ class Pcd8544Device extends Device
{
$this->bl->setValue((bool)$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();
}
}