106 lines
2.7 KiB
C++
106 lines
2.7 KiB
C++
#include "serial_io.h"
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void sWrite(int port, char string[], size_t length)
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{
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if(port != -1) write(port, string, length);
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}
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void sWrite(int port, const char string[], size_t length)
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{
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if(port != -1) write(port, string, length);
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}
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ssize_t sRead(int port, void *buf, size_t count)
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{
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return (port != -1) ? read(port, buf, count) : 0;
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}
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#ifdef __cplusplus
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void printRates()
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{
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std::cout<<"Rates:\n"\
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<<"Unchanged 0\n" \
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<<"B50 "<<B50<<'\n'\
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<<"B75 "<<B75<<'\n'\
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<<"B110 "<<B110<<'\n'\
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<<"B134 "<<B134<<'\n'\
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<<"B150 "<<B150<<'\n'\
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<<"B200 "<<B200<<'\n'\
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<<"B300 "<<B300<<'\n'\
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<<"B600 "<<B600<<'\n'\
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<<"B1200 "<<B1200<<'\n'\
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<<"B1800 "<<B1800<<'\n'\
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<<"B2400 "<<B2400<<'\n'\
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<<"B4800 "<<B4800<<'\n'\
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<<"B9600 "<<B9600<<'\n'\
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<<"B19200 "<<B19200<<'\n'\
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<<"B38400 "<<B38400<<'\n'\
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<<"B57600 "<<B57600<<'\n'\
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<<"B115200 "<<B115200<<'\n'\
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<<"B230400 "<<B230400<<'\n'\
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<<"B460800 "<<B460800<<'\n'\
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<<"B500000 "<<B500000<<'\n'\
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<<"B576000 "<<B576000<<'\n'\
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<<"B921600 "<<B921600<<'\n'\
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<<"B1000000 "<<B1000000<<'\n'\
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<<"B1152000 "<<B1152000<<'\n'\
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<<"B1500000 "<<B1500000<<'\n';
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}
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#endif
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int serialport_init(const char* device, int baud)
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{
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int fd;
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struct termios toptions;
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fd = open(device, O_RDWR | O_NOCTTY | O_NDELAY);
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if (fd == -1)
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{
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perror("init_serialport: Unable to open port ");
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return -1;
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}
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if (tcgetattr(fd, &toptions) < 0)
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{
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perror("init_serialport: Couldn't get term attributes");
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return -1;
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}
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// 8N1
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toptions.c_cflag &= ~PARENB;
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toptions.c_cflag &= ~CSTOPB;
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toptions.c_cflag &= ~CSIZE;
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toptions.c_cflag |= CS8;
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// no flow control
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toptions.c_cflag &= ~(CRTSCTS | CLOCAL);
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//Make Raw
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toptions.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IXON);
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toptions.c_oflag &= ~OPOST; //hmm examine
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toptions.c_lflag &= ~(ECHO | ECHONL | ICANON | ISIG | IEXTEN);
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toptions.c_cflag &= ~(CSIZE | PARENB);
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toptions.c_cflag |= CS8;
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if(baud != 0)
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{
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int error = cfsetispeed(&toptions, baud) | cfsetospeed(&toptions, baud);
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if(error)
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{
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perror("init_serialport: Couldn't set baud rate");
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return -1;
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}
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}
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// see: http://unixwiz.net/techtips/termios-vmin-vtime.html
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toptions.c_cc[VMIN] = 0;
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toptions.c_cc[VTIME] = 40;
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fcntl(fd, F_SETFL, FNDELAY);
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if( tcsetattr(fd, TCSANOW, &toptions) < 0)
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{
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perror("init_serialport: Couldn't set term attributes");
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return -1;
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}
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return fd;
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}
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