android: AndrOBD library vendored (no submodule, no git link)
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“Naeel”
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/*
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* (C) Copyright 2015 by fr3ts0n <erwin.scheuch-heilig@gmx.at>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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package com.fr3ts0n.prot;
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import java.io.IOException;
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import java.util.logging.Logger;
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/**
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* Extension to native serial selectedPort to allow odd baud rates and 5-Baud operations
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* especially for automotive usage
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*
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* @author erwin
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*/
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public class SerialExt
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{
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private static final Logger log = Logger.getLogger("com.fr3ts0n.prot.ext");
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/**
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* Open serial device
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*
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* @param fileName file name of serial device (i.e.: \\.\COMx, /dev/ttySx ...)
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* @return file descriptor of file device, or -1 if not available
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*/
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private static native int openSerial(String fileName);
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/**
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* Close serial device
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*
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* @param fd file descriptor of selectedPort
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* @return error status of system function (0=success)
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*/
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private static native int closeSerial(int fd);
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/**
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* native interface to
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* set status of BREAK signal
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* This is used to create a 5-baud signal for ECU kick-off
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*
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* @param fd file descriptor of selectedPort
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* @param brkStatus desired status of BREAK signal
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* @return error status of system function (0=success)
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*/
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private static native int setBreak(int fd, int brkStatus);
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/**
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* native interface to
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* set custom baud rate
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* Custom baud rates are set by dividing the selectedPort baud base frequency with a
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* divisor value. Purpose of this function is to allow odd ball ECU baud rates
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* like 10400 baud etc., which are not supported by regular system calls
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*
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* @param fd file descriptor of selectedPort
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* @param baudRate cusom baud rate to be set
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* @return error status of system function (0=success)
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*/
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private static native int setCustomBaudrate(int fd, int baudrate);
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/**
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* native interface to
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* return custom baud rate setting
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* Custom baud rates are set by dividing the selectedPort baud base frequency with a
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* divisor value. Purpose of this function is to allow odd ball ECU baud rates
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* like 10400 baud etc., which are not supported by regular system calls
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*
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* @param fd file descriptor of selectedPort
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* @return custom baud rate setting, or 0 if no custom baud rate was set
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*/
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private static native int getCustomBaudrate(int fd);
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/**
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* receive a character from COM selectedPort
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*
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* @param fd file descriptor of selectedPort
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* @return received character or -1 on receive error
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*/
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private static native int receiveChar(int fd);
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/**
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* send a character from COM selectedPort
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*
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* @param fd file descriptor of selectedPort
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* @param txChar character to be sent
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* @return error status of system function (0=success)
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*/
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private static native int sendChar(int fd, char txChar);
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/** file descriptor of serial selectedPort */
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public static int serialPortDescriptor = -1;
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static
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{
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System.loadLibrary("SerialExt");
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}
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/**
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* Open serial device
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*
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* @param fileName file name of serial device (i.e.: \\.\COMx, /dev/ttySx ...)
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* @return file descriptor of file device, or -1 if not available
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* @throws IOException
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*/
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public static int open(String fileName)
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throws IOException
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{
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int result = openSerial(fileName);
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if (result < 0)
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{
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throw new IOException("open");
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}
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serialPortDescriptor = result;
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return result;
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}
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/**
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* Close serial device
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*
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* @return error status of serial operation (0=SUCCESS)
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* @throws IOException
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*/
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public static int close()
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throws IOException
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{
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int result = closeSerial(serialPortDescriptor);
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serialPortDescriptor = -1;
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if (result != 0)
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{
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throw new IOException("close");
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}
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return result;
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}
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/**
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* Set line BREAK status to desired state
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*
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* @param newStatus desired BREAK status
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* @return error status of selectedPort/line setting (0=SUCCESS)
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* @throws IOException
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*/
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public static void setBreak(int newStatus)
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throws IOException
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{
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log.fine(String.format("BREAK %s", newStatus != 0 ? "ON" : "OFF"));
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int result = setBreak(serialPortDescriptor, newStatus);
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if (result != 0)
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{
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throw new IOException("setBreak");
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}
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}
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/**
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* Set custom baud rate on specified SerialPort
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*
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* @param baudrate new baud rate in bps
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* @return error status of selectedPort/line setting (0=SUCCESS)
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* @throws IOException
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*/
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public static void setCustomBaudrate(int baudrate)
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throws IOException
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{
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log.fine(String.format("Setting custom baudrate %d", baudrate));
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int result = setCustomBaudrate(serialPortDescriptor, baudrate);
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if (result != 0)
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{
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throw new IOException("setCustomBaudrate");
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}
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}
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/**
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* Set custom baud rate on specified SerialPort
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*
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* @return error status of selectedPort/line setting (0=SUCCESS)
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* @throws IOException
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*/
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public static int getCustomBaudrate()
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throws IOException
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{
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int result = getCustomBaudrate(serialPortDescriptor);
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log.fine(String.format("getting custom baudrate %d", result));
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if (result <= 0)
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{
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throw new IOException("getCustomBaudrate");
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}
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return result;
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}
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/**
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* receive a character from COM selectedPort
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*
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* @return received character or -1 on receive error
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*/
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public static int receiveChar()
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throws IOException
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{
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log.finer("waiting for RX char");
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int result = receiveChar(serialPortDescriptor);
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if (result < 0)
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{
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throw new IOException(String.format("receiveChar:%02X", result));
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}
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return result;
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}
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/**
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* send a character to COM selectedPort
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*
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* @param txChar character to be sent
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* @return received character or -1 on send error
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*/
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public static int sendChar(byte txChar)
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throws IOException
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{
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log.finer(String.format("sending char:%02X", (byte) txChar));
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int result = sendChar(serialPortDescriptor, (char) txChar);
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if (result < 0)
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{
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throw new IOException(String.format("sendChar:%d", result));
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}
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return result;
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}
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/**
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* send characters to COM selectedPort
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*
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* @param txBytes characters to be sent
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* @return received character or -1 on send error
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*/
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public static int write(byte[] txBytes)
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throws IOException
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{
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int result = 0;
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for (int i = 0; i < txBytes.length; i++)
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result |= sendChar(txBytes[i]);
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return result;
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}
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}
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