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/*
* GraphLCD driver library
*
* port.h - parallel port class with low level routines
*
* This file is released under the GNU General Public License. Refer
* to the COPYING file distributed with this package.
*
* (c) 2004 Andreas Regel <andreas.regel AT powarman.de>
*/
#ifndef _GLCDDRIVERS_PORT_H_
#define _GLCDDRIVERS_PORT_H_
#include <string>
#include <termios.h>
// The following block is copied from "asm/termbits.h"
// Has to be copied as the kernel header file conflicts with glibc termios.h
#define NCCS2 19
struct termios2 {
tcflag_t c_iflag; /* input mode flags */
tcflag_t c_oflag; /* output mode flags */
tcflag_t c_cflag; /* control mode flags */
tcflag_t c_lflag; /* local mode flags */
cc_t c_line; /* line discipline */
cc_t c_cc[NCCS2]; /* control characters */
speed_t c_ispeed; /* input speed */
speed_t c_ospeed; /* output speed */
};
#define TCGETS2 _IOR('T', 0x2A, struct termios2)
#define TCSETS2 _IOW('T', 0x2B, struct termios2)
#define BOTHER 0010000
namespace GLCD
{
const int kForward = 0;
const int kReverse = 1;
const unsigned char kStrobeHigh = 0x00; // Pin 1
const unsigned char kStrobeLow = 0x01;
const unsigned char kAutoHigh = 0x00; // Pin 14
const unsigned char kAutoLow = 0x02;
const unsigned char kInitHigh = 0x04; // Pin 16
const unsigned char kInitLow = 0x00;
const unsigned char kSelectHigh = 0x00; // Pin 17
const unsigned char kSelectLow = 0x08;
class cParallelPort
{
private:
int fd;
int port;
bool usePPDev;
bool portClaimed;
public:
cParallelPort();
~cParallelPort();
int Open(int port);
int Open(const char * device);
int Close();
bool IsDirectIO() const { return (!usePPDev); }
int GetPortHandle() const { return ((usePPDev) ? fd : port); }
bool Claim();
void Release();
bool IsPortClaimed() const { return (portClaimed); }
void SetDirection(int direction);
unsigned char ReadControl();
void WriteControl(unsigned char values);
unsigned char ReadStatus();
unsigned char ReadData();
void WriteData(unsigned char data);
};
class cSerialPort
{
private:
int fd;
public:
cSerialPort();
~cSerialPort();
int Open(const char * device);
int Close();
void SetBaudRate(int speed);
int ReadData(unsigned char * data);
void WriteData(unsigned char data);
void WriteData(unsigned char * data, unsigned short length);
void WriteData(std::string data);
};
} // end of namespace
#endif
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