114 lines
2.6 KiB
C++
114 lines
2.6 KiB
C++
#include "serial_io.h"
|
|
|
|
ssize_t sWrite(int port, char string[], size_t length)
|
|
{
|
|
if(port != -1)
|
|
return write(port, string, length);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
ssize_t sWrite(int port, const char string[], size_t length)
|
|
{
|
|
if(port != -1)
|
|
return write(port, string, length);
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
ssize_t sRead(int port, void *buf, size_t count)
|
|
{
|
|
return (port != -1) ? read(port, buf, count) : 0;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
void printRates()
|
|
{
|
|
std::cout<<"Rates:\n"\
|
|
<<"Unchanged 0\n" \
|
|
<<"B50 "<<B50<<'\n'\
|
|
<<"B75 "<<B75<<'\n'\
|
|
<<"B110 "<<B110<<'\n'\
|
|
<<"B134 "<<B134<<'\n'\
|
|
<<"B150 "<<B150<<'\n'\
|
|
<<"B200 "<<B200<<'\n'\
|
|
<<"B300 "<<B300<<'\n'\
|
|
<<"B600 "<<B600<<'\n'\
|
|
<<"B1200 "<<B1200<<'\n'\
|
|
<<"B1800 "<<B1800<<'\n'\
|
|
<<"B2400 "<<B2400<<'\n'\
|
|
<<"B4800 "<<B4800<<'\n'\
|
|
<<"B9600 "<<B9600<<'\n'\
|
|
<<"B19200 "<<B19200<<'\n'\
|
|
<<"B38400 "<<B38400<<'\n'\
|
|
<<"B57600 "<<B57600<<'\n'\
|
|
<<"B115200 "<<B115200<<'\n'\
|
|
<<"B230400 "<<B230400<<'\n';
|
|
}
|
|
#endif
|
|
|
|
int serialport_set_config(int fd, int baud)
|
|
{
|
|
struct termios toptions;
|
|
if (tcgetattr(fd, &toptions) < 0)
|
|
{
|
|
perror("init_serialport: Couldn't get term attributes");
|
|
return -1;
|
|
}
|
|
// 8N1
|
|
toptions.c_cflag &= ~PARENB;
|
|
toptions.c_cflag &= ~CSTOPB;
|
|
toptions.c_cflag &= ~CSIZE;
|
|
toptions.c_cflag |= CS8;
|
|
|
|
// no flow control
|
|
toptions.c_cflag &= ~(CRTSCTS | CLOCAL);
|
|
|
|
//Make Raw
|
|
toptions.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
|
|
toptions.c_oflag &= ~OPOST; //hmm examine
|
|
toptions.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
|
|
toptions.c_cflag &= ~(CSIZE | PARENB);
|
|
toptions.c_cflag |= CS8;
|
|
|
|
if(baud != 0)
|
|
{
|
|
int error = cfsetispeed(&toptions, baud) | cfsetospeed(&toptions, baud);
|
|
|
|
if(error)
|
|
{
|
|
perror("init_serialport: Couldn't set baud rate");
|
|
return -1;
|
|
}
|
|
}
|
|
// see: http://unixwiz.net/techtips/termios-vmin-vtime.html
|
|
toptions.c_cc[VMIN] = 0;
|
|
toptions.c_cc[VTIME] = 40;
|
|
fcntl(fd, F_SETFL, FNDELAY);
|
|
if( tcsetattr(fd, TCSANOW, &toptions) < 0)
|
|
{
|
|
perror("init_serialport: Couldn't set term attributes");
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int serialport_init(const char* device, int baud, bool block)
|
|
{
|
|
int fd;
|
|
fd = open(device, O_RDWR | O_NOCTTY | (block ? 0 : O_NONBLOCK));
|
|
if (fd == -1)
|
|
{
|
|
perror("init_serialport: Unable to open port ");
|
|
return -1;
|
|
}
|
|
|
|
if(serialport_set_config(fd, baud) != 0)
|
|
{
|
|
close(fd);
|
|
fd = -1;
|
|
}
|
|
return fd;
|
|
}
|
|
|