hlg150: Initial Implementation Meanwell HLG150 based LED light controller

Signed-off-by: Henry Bruce <henry.bruce@intel.com>
Signed-off-by: Abhishek Malik <abhishek.malik@intel.com>

src/hlg150h/CMakeLists.txt

@@ -0,0 +1,6 @@
+include_directories(..)
+set (libname "hlg150h")
+set (libdescription “Lighting power supply”)
+set (module_src ${libname}.cxx mraa-utils.cxx)
+set (module_h ${libname}.h)
+upm_module_init()

src/hlg150h/hlg150h.cxx

@@ -0,0 +1,96 @@
+#include <iostream>
+#include <stdexcept>
+#include <unistd.h>
+#include "hlg150h.h"
+#include "mraa-utils.h"
+
+#define PWM_PERIOD 3333
+
+using namespace upm;
+
+HLG150H::HLG150H(int pinRelay, int pinPWM)
+{
+   int dutyPercent = 0;
+   status = mraa::SUCCESS;
+   this->pinRelay = pinRelay;
+   isPoweredShadow = false;
+   pwmBrightness = new mraa::Pwm(pinPWM);
+   if (pwmBrightness == NULL)
+      UPM_THROW("pwm init failed");
+   status = pwmBrightness->enable(true);
+   status = pwmBrightness->period_us(PWM_PERIOD);
+   if (!isConfigured())
+      UPM_THROW("pwm config failed.");
+   dutyPercent = getBrightness();
+   isPoweredShadow = dutyPercent > 10;
+}
+
+HLG150H::~HLG150H()
+{
+   delete pwmBrightness;
+}
+
+bool HLG150H::isConfigured()
+{
+   return status == mraa::SUCCESS;
+}
+
+
+void HLG150H::setPowerOn()
+{
+   isPoweredShadow = true;
+   MraaUtils::setGpio(pinRelay, 0);
+}
+
+void HLG150H::setPowerOff()
+{
+   isPoweredShadow = false;
+   MraaUtils::setGpio(pinRelay, 1);
+}
+
+bool HLG150H::isPowered()
+{
+   // Can't read GPIO state as setting in to input mode turns off relay
+   // Instead we return a shadow variable
+   /*
+   int level;
+   if (MraaUtils::getGpio(pinRelay, &level) == MRAA_SUCCESS)
+      return level == 1;
+   else
+      return false;
+   */
+   return isPoweredShadow;
+}
+
+
+// If duty is less than 10% light will flicker
+void HLG150H::setBrightness(int dutyPercent)
+{
+   if (dutyPercent < 10)
+      dutyPercent = 10;
+   if (isConfigured())
+   {
+      int dutyUs = (PWM_PERIOD * dutyPercent) / 100;
+      dutyUs = PWM_PERIOD - dutyUs;
+      status = pwmBrightness->pulsewidth_us(dutyUs);
+      // std::cout << "Brightness = " << dutyPercent << "%, duty = " << dutyUs << "us" << std::endl;      
+   }
+   else
+      UPM_THROW("setBrightness failed");
+
+}
+
+
+int HLG150H::getBrightness()
+{
+   if (isConfigured())
+   {
+      float duty = pwmBrightness->read();
+      int dutyPercent = static_cast<int>(100.0 * (1.0 - duty) + 0.5);
+      return dutyPercent;
+   }
+   else
+      UPM_THROW("getBrightness failed");
+}
+
+

src/hlg150h/hlg150h.h

@@ -0,0 +1,79 @@
+/*
+ * Author: Henry Bruce <henry.bruce@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "upm/iLightController.h"
+// #include "mraa/gpio.hpp"
+#include "mraa/pwm.hpp"
+
+namespace upm
+{
+
+/**
+ * @brief Meanwell HLG150H Lighting power supply controller library
+ * @defgroup hlg150h libupm-hlg150h
+ * @ingroup pwm light ilightcontroller
+ */
+
+/**
+ * @brief API for HLG-150H Lighting Power Supply Controller
+ *
+ * The Mean Well
+ * [HLG-150H](http://www.meanwell.com/webapp/product/search.aspx?prod=HLG-150H)
+ * 150W Single Output Switching Power Supply
+ *
+ * @library hlg150h
+ * @sensor hlg150h
+ * @comname HLG150H lighting controller
+ * @altname HLG150H
+ * @type light
+ * @con pwm
+ * @if ilightcontroller
+ */
+
+class HLG150H : public upm::ILightController
+{
+public:
+   HLG150H(int pinRelay, int pinPWM);
+   ~HLG150H();
+
+protected:
+   bool isConfigured();
+   const char* getModuleName() { return "hlg150h"; }   
+   void setPowerOn();
+   void setPowerOff();
+   bool isPowered();
+   void setBrightness(int dutyPercent);
+   int getBrightness();
+
+private:
+   mraa::Result status;
+   bool isPoweredShadow;
+   int pinRelay;
+   mraa::Pwm* pwmBrightness;
+};
+
+}
+
+
+

src/hlg150h/jsupm_hlg150h.i

@@ -0,0 +1,8 @@
+%module jsupm_hlg150h
+%include "../upm.i"
+
+%{
+    #include "hlg150h.h"
+%}
+
+%include "hlg150h.h"

src/hlg150h/mraa-utils.cxx

@@ -0,0 +1,46 @@
+/*
+ * Author: Henry Bruce <henry.bruce@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "mraa-utils.h"
+#include "mraa/gpio.hpp"
+
+ #define UPM_THROW(msg) throw std::runtime_error(std::string(__FUNCTION__) + ": " + (msg))
+
+void MraaUtils::setGpio(int pin, int level)
+{
+   mraa::Gpio gpio(pin);
+   gpio.dir(mraa::DIR_OUT);
+   if (gpio.write(level) != mraa::SUCCESS)
+      UPM_THROW("gpio write failed");
+}
+
+
+int MraaUtils::getGpio(int pin)
+{
+   mraa::Gpio gpio(pin);
+   gpio.dir(mraa::DIR_IN);
+   return gpio.read();
+}
+
+

src/hlg150h/mraa-utils.h

@@ -0,0 +1,37 @@
+/*
+ * Author: Henry Bruce <henry.bruce@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#pragma once
+
+#include "mraa/types.h"
+
+class __attribute__ ((visibility("hidden"))) MraaUtils
+{
+public:
+   static void setGpio(int pin, int level);
+   static int getGpio(int pin);
+};
+
+
+

src/hlg150h/pyupm_hlg150h.i

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+%module pyupm_hlg150h
+%include "../upm.i"
+
+%feature("autodoc", "3");
+
+%include "hlg150h.h"
+%{
+    #include "hlg150h.h"
+%}