int OpenComPort (int ComPort, int baudrate, int databit, const char *stopbit, char parity)
{
char *pComPort;
int fd; //File descriptor for the port
int retval;
switch (ComPort) {
case 0:
pComPort = "/dev/ttyUSB0";
break;
case 1:
pComPort = "/dev/ttyS1";
break;
case 2:
pComPort = "/dev/ttyS2";
break;
case 3:
pComPort = "/dev/ttyS3";
break;
case 4:
pComPort = "/dev/ttyS4";
break;
case 5:
pComPort = "/dev/ttyS5";
break;
case 6:
pComPort = "/dev/ttyS6";
break;
case 7:
pComPort = "/dev/ttyS7";
break;
default:
pComPort = "/dev/ttyS0";
break;
}
fd = open (pComPort, O_RDWR | O_NOCTTY | O_NONBLOCK);
if (-1 == fd)
return (-1);
tcgetattr (fd, &termios_old); /* save old termios value */
/* 0 on success, -1 on failure */
retval = SetPortAttr (fd, baudrate, databit, stopbit, parity);
if (-1 == retval)
return -1;
return (fd);
}
/* Open serial port ComPort at baudrate baud rate. */
int OpenComPort (int ComPort, int baudrate, int databit,const char *stopbit, char parity)
{
const char *pComPort;
int retval;
int fd;
switch (ComPort)
{
case 0:
pComPort = "/dev/tcc-uart0";
break;
case 1:
pComPort = "/dev/tcc-uart1";
break;
case 2:
pComPort = "/dev/tcc-uart2";
break;
case 3:
pComPort = "/dev/tcc-uart3";
break;
case 4:
pComPort = "/dev/tcc-data";
break;
case 5:
pComPort = "/dev/ttySAC4";
break;
default:
pComPort = "/dev/tcc-uart0";
break;
}
fd = open (pComPort, O_RDWR/*|O_NONBLOCK*/);
if (fd == -1)
{
fprintf (stderr, "cannot open port %s\n", pComPort);
return (-1);
}
tcgetattr (fd, &termios_old); /* save old termios value */
retval = SetPortAttr (fd,baudrate,databit, stopbit, parity);
if (retval == -1)
{
fprintf (stderr, "\nport %s cannot set baudrate at %d\n", pComPort,
baudrate);
return -1;
}
return fd;
}
static int OpenComPort (const char *dev, int baudrate, int databit,
const char *stopbit, char parity)
{
int retval;
fd = open (dev, O_RDWR|O_NONBLOCK);
if (fd == -1)
{
fprintf (stderr, "Failed to open %s.\r\n", dev);
return -1;
}
tcgetattr (fd, &termios_old); /* save old termios value */
retval = SetPortAttr (baudrate,databit, stopbit, parity);
if (retval == -1)
{
fprintf (stderr, "Failed to set port attr.\r\n");
tcsetattr (fd, TCSANOW, &termios_old);
close(fd);
return -1;
}
return 0;
}
