headers/os/device/DigitalPort.h

   1 /*
   2  * Copyright 2009, Haiku, Inc. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef _DIGITAL_PORT_H
   6 #define _DIGITAL_PORT_H
   7
   8 #include <BeBuild.h>
   9 #include <SupportDefs.h>
  10
  11 #include <stddef.h>
  12
  13
  14 class BDigitalPort {
  15 public:
  16                                                         BDigitalPort();
  17         virtual                                 ~BDigitalPort();
  18
  19                         status_t                Open(const char* portName);
  20                         void                    Close();
  21                         bool                    IsOpen();
  22
  23                         ssize_t                 Read(uint8* buf);
  24                         ssize_t                 Write(uint8 value);
  25
  26                         status_t                SetAsOutput();
  27                         bool                    IsOutput();
  28
  29                         status_t                SetAsInput();
  30                         bool                    IsInput();
  31
  32 private:
  33         virtual void            _ReservedDigitalPort1();
  34         virtual void            _ReservedDigitalPort2();
  35         virtual void            _ReservedDigitalPort3();
  36
  37                         int                     fFd;
  38                         bool            fIsInput;
  39                         uint32          _fReserved[3];
  40 };
  41
  42 #endif // _DIGITAL_PORT_H
  43