cleaned up gpio and device code, implemented dummy/dry run mode
This commit is contained in:
parent
3e4765d071
commit
1449ec643f
4
composer.lock
generated
4
composer.lock
generated
@ -15,7 +15,7 @@
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"source": {
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"type": "git",
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"url": "http://satis.noccylabs.info/packages/php-crap.git",
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"reference": "33d3929fb5fab4056ea9993b8d148aa3ba44e4c3"
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"reference": "aede74280244c61564d648139f5fa2318834471e"
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},
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"type": "library",
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"extra": {
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@ -38,7 +38,7 @@
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}
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],
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"description": "Crap is an exception/error/assertion handling library",
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"time": "2014-06-14 01:11:31"
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"time": "2014-06-18 19:21:45"
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},
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{
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"name": "noccylabs/sansi",
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24
examples/pcd8544.php
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24
examples/pcd8544.php
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@ -0,0 +1,24 @@
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<?php
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require_once __DIR__."/../vendor/autoload.php";
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NoccyLabs\Crap\Crap::activate();
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use NoccyLabs\Gpio\Gpio;
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use NoccyLabs\Gpio\Device\Display\Pcd8544Device;
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$gpio = new Gpio(true);
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$lcd = new Pcd8544Device;
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$lcd
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// we can rename devices as we like, to help in debugging
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->setName("pcd8544_1")
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->setPin("sda", $gpio[0])
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->setPin("scl", $gpio[1])
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->setPin("res", $gpio[2])
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->setPin("sce", $gpio[3])
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->setPin("dc", $gpio[4])
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->initialize()
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;
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@ -18,16 +18,22 @@
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*/
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namespace NoccyLabs\Gpio\Device;
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use NoccyLabs\Gpio\GpioPin;
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abstract class Device implements GpioAwareInterface
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abstract class Device
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{
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protected $name;
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protected $gpio;
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protected $description;
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protected $pins = array();
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public function __construct()
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{
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$this->configure();
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}
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protected function configure()
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{
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// call on ->addGpioPin etc here
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@ -44,39 +50,33 @@ abstract class Device implements GpioAwareInterface
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}
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public function setName($name)
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{}
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{
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$this->name = $name;
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return $this;
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}
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public function getName()
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{}
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{
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return $this->name;
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}
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public function setDescription($description)
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{}
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{
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$this->description = $description;
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return $this;
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}
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public function getDescription()
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{}
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/**
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* Allocate a GPIO (as defined in hardware) pin to the device.
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*
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*/
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public function addGpioPin($gpio, $name, $description=null)
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{
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$pin = new GpioPin($gpio);
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$pin->setLabel($description);
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$this->pins[$name] = $pin;
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return $this->description;
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}
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public function addPin($name, $description=null)
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{
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$this->pins[$name] = null;
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return $this;
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}
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/**
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* Allocate a logical (wiring-pi 0-based pin number) pin to the device.
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*
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*/
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public function addLogicalPin($logical, $name, $description=null)
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{
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$pin = $this->gpio[$logical];
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$pin->setLabel($description);
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$this->pins[$name] = $pin;
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}
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/**
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* Get all allocated pins
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*
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@ -94,20 +94,49 @@ abstract class Device implements GpioAwareInterface
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{
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return $this->pins[$name];
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}
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public function setPin($pin_name, $pin)
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{
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if (array_key_exists($pin_name, $this->pins)) {
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$pin->setLabel($this->name.".".$pin_name);
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$this->pins[$pin_name] = $pin;
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return $this;
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}
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throw new \Exception();
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}
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/**
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* Get a pin as a property from its name
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*
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*/
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protected function __get($pin_name)
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public function __get($pin_name)
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{
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return $this->getPin($pin_name);
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}
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public function delayMillis($ms)
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{}
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public function __set($pin_name, GpioPin $pin)
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{
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$this->setPin($pin_name, $pin);
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}
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public function delayMicros($us)
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{}
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protected function delayMillis($ms)
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{
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usleep($ms*1000);
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}
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protected function delayMicros($us)
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{
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usleep($us);
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}
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protected function shiftOut(GpioPin $pdata, GpioPin $pclk, $byte)
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{
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for ($bit = 0; $bit < 8; $bit++) {
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$bval = 1<<$bit;
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$pclk->setValue(0);
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$pdata->setValue(($byte & $bval) == $bval);
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$pclk->setValue(1);
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}
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}
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}
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@ -28,12 +28,12 @@ class Pcd8544Device extends Device
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$this
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->setName("pcd8544")
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->setDescription("Philips PCD8544 LCD Display Driver")
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->addLogicalPin(0, "dc", "data/command")
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->addLogicalPin(1, "sce", "chip select")
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->addLogicalPin(2, "scl", "clock")
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->addLogicalPin(3, "sda", "data")
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->addLogicalPin(4, "res", "reset")
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->addLogicalPin(9, "bl", "backlight")
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->addPin("dc", "data/command")
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->addPin("sce", "chip select")
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->addPin("scl", "clock")
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->addPin("sda", "data")
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->addPin("res", "reset")
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->addPin("bl", "backlight")
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;
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}
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@ -46,4 +46,70 @@ class Pcd8544Device extends Device
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{
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$this->bl->setValue((bool)$state);
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}
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public function initialize()
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{
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$this->lcdInit();
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}
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public function lcdSend($byte, $command=false)
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{
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// assume clk is hi
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// Enable display controller (active low).
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$this->sce->setValue(0);
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$this->dc->setValue((int)$command); // command or data
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$this->shiftOut($this->sda, $this->scl, $byte);
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// Disable display controller.
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$this->sce->setValue(1);
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/*
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if (!$command) {
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$this->cx++;
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if ($this->cx > (LCD_X_RES - 1)) {
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cx = 0; cy++;
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#ifdef PCD8544_FIX_YALIGN
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// Soft wrapping when FIX_YALIGN is defined
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lcd_cursor(cx,cy);
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#endif
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}
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}
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*/
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}
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public function lcdInit()
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{
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$this->sce->setDirection("out");
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$this->res->setDirection("out");
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$this->dc->setDirection("out");
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$this->scl->setDirection("out");
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$this->sda->setDirection("out");
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$this->res->setValue(1); // set RES
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$this->sce->setValue(0); // reset SCE
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$this->res->setValue(0); // pull RES low
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$this->res->setValue(0); // and back hick
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// Send sequence of command
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$this->lcdSend( 0x21, true ); // LCD Extended Commands.
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// lcd_send( 0xC8, true ); // Set LCD Vop (Contrast).
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$this->lcdSend( 0x80 | 0x70, true ); // Set LCD Vop (Contrast).
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$this->lcdSend( 0x06, true ); // Set Temp coefficent to 2.
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$this->lcdSend( 0x13, true ); // LCD bias mode 1:100.
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#ifdef PCD8544_FIX_YALIGN
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$this->lcdSend( 0x45, true ); // LCD blank - Shift LCD 5 up (row starts at 1)
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#endif
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$this->lcdSend( 0x20, true ); // LCD Standard Commands, Horizontal addressing mode.
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$this->lcdSend( 0x40, true ); // LCD blank
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$this->lcdSend( 0x08, true ); // LCD blank
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$this->lcdSend( 0x0C, true ); // LCD in inverse mode.
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//$this->lcdClear();
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}
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}
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209
lib/DummyGpioPin.php
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209
lib/DummyGpioPin.php
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<?php
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/*
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* Copyright (C) 2014, NoccyLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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namespace NoccyLabs\Gpio;
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use NoccyLabs\Gpio\Exception\HardwareException;
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use NoccyLabs\Sansi\Charset as CS;
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/**
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* GPIO pin implementation. This class wraps all interaction with a GPIO pin,
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* thus decoupling it from the main Gpio class.
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*
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*/
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class DummyGpioPin extends GpioPin
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{
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public function getPin()
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{
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return $this->pin;
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}
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private function findHardware()
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{
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return "dummy";
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}
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public function __destruct()
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{
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}
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public function setDirection($direction)
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{
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if (!in_array($direction, array("in", "out"))) {
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throw new \Exception;
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}
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$this->direction = $direction;
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$this->sysfsWrite($this->pin, "direction", $direction);
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return $this;
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}
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public function getDirection()
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{
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return $this->sysfsRead($this->pin, "direction");
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}
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public function setValue($value)
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{
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$this->value = (bool)$value;
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$this->sysfsWrite("{$this->pin}", "value", (int)$this->value);
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return $this;
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}
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public function getValue()
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{
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return $this->sysfsRead($this->pin, "value");
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}
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/**
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* Set a descriptive label for the pin, used for debugging and troubleshooting.
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*
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* @param string $label
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* @return NoccyLabs\Gpio\GpioPin
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*/
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public function setLabel($label)
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{
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$this->label = (string)$label;
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return $this;
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}
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/**
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* Get the assigned label for this pin.
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*
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* @return string The label
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*/
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public function getLabel()
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{
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return $this->label;
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}
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public function export()
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{
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if (file_exists("/sys/class/gpio/gpio{$this->pin}")) {
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return $this;
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}
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$this->sysfsWrite(null, "export", $this->pin);
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if (!file_exists("/sys/class/gpio/gpio{$this->pin}")) {
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throw new HardwareException("Unable to export pin {$this->pin}");
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}
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$this->hardware = $this->findHardware();
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return $this;
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}
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public function unexport()
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{
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$this->sysfsWrite(null, "unexport", $this->pin);
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return $this;
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}
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public function sysfsWrite($pin, $file, $value)
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{
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if ($pin!==null) {
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$path = "/sys/class/gpio/gpio{$pin}/{$file}";
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} else {
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$path = "/sys/class/gpio/{$file}";
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}
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printf("%16.4f \e[32;1m%-5s\e[0m \e[1m%-15s\e[0m (\e[33m%s\e[0m) => \e[36;1m%-10s\e[0m \n",
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microtime(true),
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"write",
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$this->label,
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$file,
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$value
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);
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}
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public function sysfsRead($pin, $file)
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{
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$path = "/sys/class/gpio/gpio{$pin}/{$file}";
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printf("%16.4f \e[31;1m%-5s\e[0m \e[1m%-15s\e[0m (\e[33m%s\e[0m)\n",
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microtime(true),
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"read",
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$this->label,
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$file
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);
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return 0;
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}
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public function setEdge($edge)
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{
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if (!in_array($edge, array("rising", "falling", "both", "none"))) {
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throw new \Exception;
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}
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$this->edge = $edge;
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$this->sysfsWrite($this->pin, "edge", $edge);
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return $this;
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}
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public function getEdge()
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{
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return $this->sysfsRead($this->pin, "edge");
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}
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public function setHandler(callable $handler=null)
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{
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$this->gpio->setInterruptHandler($this->pin, $this->fd);
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return $this;
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}
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public function doInterrupt()
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{
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fseek($this->fd,0,SEEK_SET);
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$val = fgets($this->fd);
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}
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public function dumpStatus($ansi=false)
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{
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if ($ansi) {
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$status = "\e[44;37;1m GPIO{$this->pin} \e[0m\n";
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$direction =
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($this->direction=="input"?(CS::chr(0x2190)):(CS::chr(0x2192))).
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" ".$this->direction;
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$edge = $this->edge; //"";
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/*if ($this->edge == "rising") {
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$edge.= CS::chr(0x21A5)." rising";
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} elseif ($this->edge == "falling") {
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$edge.= CS::chr(0x21A7)." falling";
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} else {
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$edge.= "\e[0m".$this->edge;
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}*/
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} else {
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$status = "********** GPIO{$this->pin} **********\n";
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$direction = $this->direction;
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}
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foreach(array(
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"Direction" => $this->getDirection(),
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"Value" => ($this->getValue()?1:0),
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"Edge" => $this->getEdge(),
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"Label" => $this->label,
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"Hardware" => $this->hardware,
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"Int count" => 0
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) as $k=>$v) {
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if ($ansi) {
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$status.= sprintf(" \e[32;1m%10s\e[0m: \e[0m%s\e[0m\n", $k, $v);
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} else {
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$status.= sprintf(" %-10s: %s\n", $k, $v);
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}
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}
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error_log($status);
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return $this;
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}
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}
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86
lib/Gpio.php
86
lib/Gpio.php
@ -40,9 +40,11 @@ class Gpio implements \ArrayAccess
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/** @var NoccyLabs\Gpio\GpioMapperInterface */
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protected $mapper;
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public function __construct($force=false)
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protected $dummy;
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public function __construct($dummy=false)
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{
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if (!$force) {
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if (!$dummy) {
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if (!file_exists("/sys/class/gpio")) {
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throw new HardwareException("gpio sysfs is not available");
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}
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@ -50,44 +52,7 @@ class Gpio implements \ArrayAccess
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throw new HardwareException("gpio sysfs is not writable");
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}
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}
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}
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public function refresh()
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{
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$read = $this->fd_gpio;
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$write = array();
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$except = $read;
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if (count($read)>0) {
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stream_select($read, $write, $except, 0);
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foreach($except as $fd) {
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$pin = $this->getPinFromFd($fd);
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$pin->doInterrupt();
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}
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}
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}
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public function getPinFromFd($fd)
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{
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||||
foreach($this->fd_pins as $pinfd=>$pin) {
|
||||
if ($pinfd == $fd) { return $pin; }
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
protected $fd_gpio = array();
|
||||
protected $fd_pins = array();
|
||||
|
||||
public function enableInterrupt(GpioPin $pin, $fd)
|
||||
{
|
||||
$this->fd_gpio[] = $fd;
|
||||
|
||||
$this->fd_pins[$fd] = $pin;
|
||||
|
||||
}
|
||||
|
||||
public function disableInterrupt(GpioPin $pin)
|
||||
{
|
||||
$this->dummy = $dummy;
|
||||
}
|
||||
|
||||
public function setMapper(GpioMapperInterface $mapper=null)
|
||||
@ -96,26 +61,59 @@ class Gpio implements \ArrayAccess
|
||||
return $this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get a pin, optionally via previously specified mapper.
|
||||
*
|
||||
* @interface ArrayAccess
|
||||
* @param int
|
||||
*/
|
||||
public function offsetGet($index)
|
||||
{
|
||||
if ($this->mapper) { $index = $this->mapper->mapLogicalToGpioPin($index); }
|
||||
if ($this->mapper) {
|
||||
$index = $this->mapper->mapLogicalToGpioPin($index);
|
||||
}
|
||||
if (empty($this->gpio[$index])) {
|
||||
$this->gpio[$index] = new GpioPin($index, $this);
|
||||
if ($this->dummy) {
|
||||
$gpio = new DummyGpioPin($index, $this);
|
||||
} else {
|
||||
$gpio = new GpioPin($index, $this);
|
||||
}
|
||||
$this->gpio[$index] = $gpio;
|
||||
}
|
||||
return $this->gpio[$index];
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Check if a GPIO is exported
|
||||
*
|
||||
* @interface ArrayAccess
|
||||
* @param int
|
||||
*/
|
||||
public function offsetExists($index)
|
||||
{
|
||||
return array_key_exists($index, $this->gpio);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Not callable, get the requested pin via offsetGet() instead.
|
||||
*
|
||||
* @interface ArrayAccess
|
||||
* @throws Exception
|
||||
* @param int
|
||||
* @param mixed
|
||||
*/
|
||||
public function offsetSet($index,$value)
|
||||
{ throw new \Exception(); }
|
||||
|
||||
/**
|
||||
* Unlink and unexport an exported GPIO
|
||||
*
|
||||
* @interface ArrayAccess
|
||||
* @param int
|
||||
*/
|
||||
public function offsetUnset($index)
|
||||
{
|
||||
$this->gpio[$index]->unexport();
|
||||
unset($this->gpio[$index]);
|
||||
}
|
||||
|
||||
|
||||
@ -154,7 +154,7 @@ class GpioPin
|
||||
|
||||
public function sysfsWrite($pin, $file, $value)
|
||||
{
|
||||
if ($pin) {
|
||||
if ($pin!==null) {
|
||||
$path = "/sys/class/gpio/gpio{$pin}/{$file}";
|
||||
} else {
|
||||
$path = "/sys/class/gpio/{$file}";
|
||||
|
||||
71
lib/GpioWatcher.php
Normal file
71
lib/GpioWatcher.php
Normal file
@ -0,0 +1,71 @@
|
||||
<?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;
|
||||
|
||||
use NoccyLabs\Gpio\Exception\HardwareException;
|
||||
|
||||
/**
|
||||
* Watch GPIO for interrupts (hardware or software)
|
||||
*
|
||||
*
|
||||
*
|
||||
*/
|
||||
class GpioWatcher
|
||||
{
|
||||
protected $fd_gpio = array();
|
||||
protected $fd_pins = array();
|
||||
|
||||
public function refresh()
|
||||
{
|
||||
$read = $this->fd_gpio;
|
||||
$write = array();
|
||||
$except = $read;
|
||||
if (count($read)>0) {
|
||||
stream_select($read, $write, $except, 0);
|
||||
foreach($except as $fd) {
|
||||
$pin = $this->getPinFromFd($fd);
|
||||
$pin->doInterrupt();
|
||||
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public function getPinFromFd($fd)
|
||||
{
|
||||
foreach($this->fd_pins as $pinfd=>$pin) {
|
||||
if ($pinfd == $fd) { return $pin; }
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
public function enableInterrupt(GpioPin $pin, $fd)
|
||||
{
|
||||
$this->fd_gpio[] = $fd;
|
||||
|
||||
$this->fd_pins[$fd] = $pin;
|
||||
|
||||
}
|
||||
|
||||
public function disableInterrupt(GpioPin $pin)
|
||||
{
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user