LinuxGpioDriverComponentImpl.hpp

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// ======================================================================
// \title  LinuxGpioDriverImpl.hpp
// \author tcanham
// \brief  hpp file for LinuxGpioDriver component implementation class
//
// \copyright
// Copyright 2009-2015, by the California Institute of Technology.
// ALL RIGHTS RESERVED.  United States Government Sponsorship
// acknowledged.
//
// ======================================================================
 
#ifndef LinuxGpioDriver_HPP
#define LinuxGpioDriver_HPP
 
#include "Drv/LinuxGpioDriver/LinuxGpioDriverComponentAc.hpp"
#include <Os/Task.hpp>
 
namespace Drv {
 
  class LinuxGpioDriverComponentImpl :
    public LinuxGpioDriverComponentBase
  {
 
    public:
 
      // ----------------------------------------------------------------------
      // Construction, initialization, and destruction
      // ----------------------------------------------------------------------
 
      LinuxGpioDriverComponentImpl(
          const char *const compName 
      );
 
      void init(
          const NATIVE_INT_TYPE instance = 0 
      );
 
      ~LinuxGpioDriverComponentImpl();
 
      Os::Task::Status startIntTask(Os::Task::ParamType priority = Os::Task::TASK_DEFAULT,
                                    Os::Task::ParamType stackSize = Os::Task::TASK_DEFAULT,
                                    Os::Task::ParamType cpuAffinity = Os::Task::TASK_DEFAULT);
 
      enum GpioDirection {
          GPIO_IN, 
          GPIO_OUT, 
          GPIO_INT 
      };
 
      bool open(NATIVE_INT_TYPE gpio, GpioDirection direction);
 
      void exitThread();
 
    PRIVATE:
 
      // ----------------------------------------------------------------------
      // Handler implementations for user-defined typed input ports
      // ----------------------------------------------------------------------
 
      void gpioRead_handler(
          const NATIVE_INT_TYPE portNum, 
          Fw::Logic &state
      );
 
      void gpioWrite_handler(
          const NATIVE_INT_TYPE portNum, 
          const Fw::Logic& state
      );
 
      NATIVE_INT_TYPE m_gpio;
 
      GpioDirection m_direction;
 
      static void intTaskEntry(void * ptr);
 
      Os::Task m_intTask;
      NATIVE_INT_TYPE m_fd;
      bool m_quitThread;
 
    };
 
} // end namespace Drv
 
#endif