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#ifndef _SERIALPORT_H_
#define _SERIALPORT_H_
#include "abstractio.hpp"
#include "debugout.h"
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <termios.h>
#include <errno.h>
#include <stdio.h>
class SerialPort: public AbstractIo
{
private:
speed_t speed;
public:
SerialPort()
:fd(0), speed(B9600)
{
}
SerialPort(int fileDesc)
:fd(fileDesc)
{
speed = B9600;
setDescriptor(fd);
}
SerialPort(std::string _tty)
:tty(_tty), fd(0)
{
speed = B9600;
}
~SerialPort()
{
close();
}
int setSpeed(int newspeed)
{
int ret = 0;
switch(newspeed)
{
case 2400:
speed = B2400;
break;
case 4800:
speed = B4800;
break;
case 9600:
speed = B9600;
break;
case 19200:
speed = B19200;
break;
case 38400:
speed = B38400;
break;
default:
ret = -EINVAL;
}
return ret;
}
bool open()
{
fd = ::open(tty.c_str(), O_RDWR, O_NOCTTY);
return setupDevice();
}
bool isOpen()
{
return (fd > 0);
}
int fileDescriptor() { return fd; }
bool close()
{
::close(fd);
}
std::string read()
{
char buff;
std::string result;
int bytesread = 0;
while( bytesread = ::read(fd, &buff, 1) > 0 )
{
result += buff;
}
if(bytesread == -1)
perror("Error while reading: ");
return result;
}
void write(const std::string & data)
{
int written = ::write(fd, data.c_str(), data.length());
if(written == -1)
{
DebugOut(DebugOut::Warning)<<"Unable to write ("<<fd<<")"<<endl;
perror("write error: ");
}
}
void setDescriptor(int d)
{
fd = d;
//setupDevice();
}
private: ///methods
bool setupDevice()
{
if(fd == -1)
{
DebugOut()<<"Cannot open serial device."<<endl;
return false;
}
struct termios oldtio;
tcgetattr(fd,&oldtio);
oldtio.c_cflag |= CS8 | CLOCAL | CREAD;
oldtio.c_iflag |= IGNPAR;
oldtio.c_iflag &= ~(ICRNL | IMAXBEL);
oldtio.c_oflag &= ~OPOST;
oldtio.c_lflag |= ECHOE | ECHOK | ECHOCTL | ECHOKE;
oldtio.c_lflag &= ~(ECHO | ICANON | ISIG);
//oldtio.c_cc[VEOL] = '\r';
cfsetispeed(&oldtio, speed);
cfsetospeed(&oldtio, speed);
tcflush(fd, TCIFLUSH);
tcsetattr(fd, TCSANOW, &oldtio);
fcntl(fd,F_SETFL,O_NONBLOCK);
return true;
}
private:
int fd;
std::string tty;
};
#endif
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