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/*
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* RS485.cpp
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*
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* Created on: 2013-07-17
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* Author: mitydsp
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*/
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#include <sys/ioctl.h>
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#include "RS485.h"
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using namespace MityDSP;
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tcArmRS485::tcArmRS485()
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{
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isOpen = false;
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isReady = false;
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termHandle = open("/dev/ttyS2", O_RDWR | O_NOCTTY | O_NDELAY);
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if (termHandle < 0)
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return;
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else
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isOpen = true;
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rs485conf.flags = SER_RS485_ENABLED;
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rs485conf.flags |= SER_RS485_USE_GPIO;
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rs485conf.delay_rts_before_send = 0;
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rs485conf.gpio_pin = GPIO0_9;
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rv = ioctl (termHandle, TIOCSRS485, &rs485conf);
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if (rv) {
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perror("unable to set IOCTL:");
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return;
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}
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tcgetattr(termHandle, &my_termios);
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// this is for raw mode, 19.2 kBaud
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/* my_termios.c_iflag &= ~(IGNBRK | BRKINT | ICRNL | INLCR | PARMRK | IGNCR | ISTRIP | IXON);
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my_termios.c_oflag &= ~OPOST;
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my_termios.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN | ISIG);
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my_termios.c_cflag &= ~(CSIZE | PARENB);
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my_termios.c_cflag |= CS8 | CLOCAL;
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my_termios.c_cflag &= ~CBAUD;
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my_termios.c_cflag |= B19200;
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*/
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// this is for test mode
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my_termios.c_iflag &= ~(IGNBRK | BRKINT | ICRNL | INLCR | PARMRK | INPCK | ISTRIP | IXON);
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my_termios.c_oflag &= ~(OCRNL | ONLCR | ONLRET | ONOCR | OFILL | OLCUC | OPOST);
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my_termios.c_lflag &= ~(ECHO | ECHONL | ICANON | IEXTEN | ISIG | ECHOK | ECHOCTL | ECHOPRT);
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my_termios.c_cflag &= ~(CSIZE | PARENB);
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my_termios.c_cflag &= ~CRTSCTS;
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my_termios.c_cflag |= CS8 | CLOCAL;
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my_termios.c_cflag &= ~CBAUD;
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my_termios.c_cflag |= B19200;
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my_termios.c_cc[VMIN] = 1;
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my_termios.c_cc[VTIME] = 0;
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rv = tcsetattr(termHandle, TCSANOW, &my_termios);
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tcgetattr(termHandle, &new_termios);
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isReady = true;
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}
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tcArmRS485::~tcArmRS485()
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{
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if(isOpen)
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close(termHandle);
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}
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