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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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#include <errno.h>
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#include "rs232config.h"
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#ifdef HAVE_TERMIOS_H
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#include <termios.h>
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#endif
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#include "RS232.h"
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#ifdef HAVE_WINDOWS_H
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#else
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#ifdef HAVE_TERMIOS_H
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rs232speed_t rs232cfspeed(unsigned int BaudeRate);
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rs232port_t rs232open(char* psPortName)
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{
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rs232port_t fd;
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fd = open(psPortName, O_RDWR | O_NOCTTY | O_NDELAY);
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fcntl(fd, F_SETFL, 0);
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//fd = open(psPortName, O_RDWR | O_NOCTTY);
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#ifdef debug
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if(fd==-1)printf("can't open Port\n");
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#endif
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return fd;
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}
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int rs232close(rs232port_t fd)
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{
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if ((int)fd == -1)
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{
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return -1;
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}
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else
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{
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close(fd);
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return 0;
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}
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}
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int rs232setup(rs232port_t fd, int ChSize, int BaudeRate, rs232parity Parity, rs232stop NbStop)
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{
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if ((int)fd == -1)
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{
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return -1;
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}
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else
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{
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struct termios terminos;
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tcgetattr(fd, &terminos);
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cfsetispeed(&terminos, rs232cfspeed(BaudeRate));
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cfsetospeed(&terminos, rs232cfspeed(BaudeRate));
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terminos.c_cflag |= (CLOCAL | CREAD);
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rs232cfparity(fd, &terminos, Parity);
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rs232cfnbstop(fd, &terminos, NbStop);
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rs232cfcsize(fd, &terminos, ChSize);
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terminos.c_cc[VMIN]=0;
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terminos.c_cc[VTIME]=1;
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tcflush(fd, TCIFLUSH);
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#ifdef debug
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if(tcsetattr(fd, TCSANOW, &terminos)!=0)printf("bad setup\n");
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#else
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tcsetattr(fd, TCSANOW, &terminos);
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#endif
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return 0;
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}
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}
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int rs232setbaudrate(rs232port_t fd, int baudrate)
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{
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if ((int)fd == -1)
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{
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return fd;
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}
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else
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{
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struct termios terminos;
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tcgetattr(fd, &terminos);
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cfsetispeed(&terminos, rs232cfspeed(baudrate));
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cfsetospeed(&terminos, rs232cfspeed(baudrate));
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tcsetattr(fd, TCSANOW, &terminos);
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return 0;
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}
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}
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int rs232setparity(rs232port_t fd, rs232parity Parity)
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{
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if ((int)fd == -1)
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{
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return fd;
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}
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else
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{
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struct termios terminos;
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tcgetattr(fd, &terminos);
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switch(Parity)
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{
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case rs232parityNo:
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terminos.c_cflag &= ~PARENB;
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break;
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case rs232parityOdd:
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terminos.c_cflag |= PARENB;
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terminos.c_cflag |= PARODD;
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break;
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case rs232parityEven:
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terminos.c_cflag |= PARENB;
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terminos.c_cflag &= ~PARODD;
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break;
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default:
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terminos.c_cflag &= ~PARENB;
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break;
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}
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tcsetattr(fd, TCSANOW, &terminos);
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return 0;
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}
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}
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int rs232setnbstop(rs232port_t fd, rs232stop NbStop)
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{
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if ((int)fd == -1)
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{
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return fd;
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}
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else
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{
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struct termios terminos;
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tcgetattr(fd, &terminos);
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switch(NbStop)
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{
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case 2:
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terminos.c_cflag |= CSTOPB;
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break;
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default:
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terminos.c_cflag &= ~CSTOPB;
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break;
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}
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tcsetattr(fd, TCSANOW, &terminos);
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return 0;
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}
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}
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int rs232setcsize(rs232port_t fd, int ChSize)
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{
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if ((int)fd == -1)
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{
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return fd;
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}
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else
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{
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struct termios terminos;
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tcgetattr(fd, &terminos);
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switch(ChSize)
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{
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case 5:
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terminos.c_cflag |= CS5;
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break;
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case 6:
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terminos.c_cflag |= CS6;
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break;
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case 7:
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terminos.c_cflag |= CS7;
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break;
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default:
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terminos.c_cflag |= CS8;
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break;
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}
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tcsetattr(fd, TCSANOW, &terminos);
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return 0;
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}
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}
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rs232speed_t rs232cfspeed(unsigned int BaudeRate)
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{
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if(BaudeRate<25)
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return B0;
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if(BaudeRate<67)
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return B50;
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if(BaudeRate<93)
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return B75;
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if(BaudeRate<123)
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return B110;
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if(BaudeRate<142)
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return B134;
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if(BaudeRate<175)
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return B150;
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if(BaudeRate<250)
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return B200;
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if(BaudeRate<450)
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return B300;
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if(BaudeRate<900)
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return B600;
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if(BaudeRate<1500)
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return B1200;
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if(BaudeRate<2100)
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return B1800;
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if(BaudeRate<3600)
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return B2400;
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if(BaudeRate<7200)
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return B4800;
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if(BaudeRate<1400)
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return B9600;
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if(BaudeRate<28800)
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return B19200;
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if(BaudeRate<48000)
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return B38400;
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if(BaudeRate<86400)
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return B57600;
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if(BaudeRate<172800)
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return B115200;
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else
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return B230400;
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}
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int rs232cfparity(int fd, struct termios *terminos, rs232parity Parity)
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{
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if ((int)fd == -1)
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{
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return fd;
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}
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else
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{
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switch(Parity)
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{
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case rs232parityNo:
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terminos->c_cflag &= Parity;
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break;
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case rs232parityOdd:
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terminos->c_cflag &= ~PARENB;
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terminos->c_cflag |= Parity;
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break;
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case rs232parityEven:
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terminos->c_cflag &= ~PARENB;
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terminos->c_cflag |= Parity;
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break;
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default:
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terminos->c_cflag &= ~PARENB;
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break;
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}
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return 0;
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}
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}
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int rs232cfnbstop(int fd, struct termios *terminos, rs232stop NbStop)
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{
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if ((int)fd == -1)
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{
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return fd;
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}
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else
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{
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switch(NbStop)
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{
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case 2:
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terminos->c_cflag |= CSTOPB;
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break;
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default:
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terminos->c_cflag &= ~CSTOPB;
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break;
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}
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return 0;
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}
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}
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int rs232cfcsize(int fd, struct termios *terminos, int ChSize)
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{
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if ((int)fd == -1)
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{
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return fd;
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}
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else
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{
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switch(ChSize)
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{
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case 5:
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terminos->c_cflag |= CS5;
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break;
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case 6:
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terminos->c_cflag |= CS6;
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break;
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case 7:
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terminos->c_cflag |= CS7;
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break;
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default:
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terminos->c_cflag |= CS8;
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break;
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}
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return 0;
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}
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}
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int rs232write(rs232port_t fd,char *psWrite, int WriteBufferSize)
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{
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if ((int)fd == -1)
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{
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return -1;
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}
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else
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{
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return write(fd, psWrite, WriteBufferSize);
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}
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}
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int rs232read(rs232port_t fd,char *psReadHex, int ReadBufferSize)
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{
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if ((int)fd == -1)
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{
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return -1;
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}
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else
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{
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return read(fd, psReadHex, ReadBufferSize);
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}
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}
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#endif
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#endif //#ifdef HAVE_TERMIOS_H
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