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00001 /**************************************************************** 00002 * 00003 * Copyright (c) 2010 00004 * 00005 * Fraunhofer Institute for Manufacturing Engineering 00006 * and Automation (IPA) 00007 * 00008 * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 00009 * 00010 * Project name: care-o-bot 00011 * ROS stack name: cob_driver 00012 * ROS package name: cob_relayboard 00013 * Description: Class for communication with relayboard. The relayboard is mainly used for reading the Emergencystop and Laserscannerstop states. 00014 * 00015 * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 00016 * 00017 * Author: Philipp Koehler 00018 * Supervised by: Christian Connette, email:christian.connette@ipa.fhg.de 00019 * 00020 * Date of creation: March 2010 00021 * ToDo: 00022 * 00023 * +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 00024 * 00025 * Redistribution and use in source and binary forms, with or without 00026 * modification, are permitted provided that the following conditions are met: 00027 * 00028 * * Redistributions of source code must retain the above copyright 00029 * notice, this list of conditions and the following disclaimer. 00030 * * Redistributions in binary form must reproduce the above copyright 00031 * notice, this list of conditions and the following disclaimer in the 00032 * documentation and/or other materials provided with the distribution. 00033 * * Neither the name of the Fraunhofer Institute for Manufacturing 00034 * Engineering and Automation (IPA) nor the names of its 00035 * contributors may be used to endorse or promote products derived from 00036 * this software without specific prior written permission. 00037 * 00038 * This program is free software: you can redistribute it and/or modify 00039 * it under the terms of the GNU Lesser General Public License LGPL as 00040 * published by the Free Software Foundation, either version 3 of the 00041 * License, or (at your option) any later version. 00042 * 00043 * This program is distributed in the hope that it will be useful, 00044 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00045 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00046 * GNU Lesser General Public License LGPL for more details. 00047 * 00048 * You should have received a copy of the GNU Lesser General Public 00049 * License LGPL along with this program. 00050 * If not, see <http://www.gnu.org/licenses/>. 00051 * 00052 ****************************************************************/ 00053 00054 #ifndef _SerialIO_H 00055 #define _SerialIO_H 00056 00057 #include <termios.h> 00058 #include <sys/select.h> 00059 00060 #include <string> 00061 00065 class SerialIO 00066 { 00067 public: 00068 // ---------------------- Constants 00070 enum HandshakeFlags 00071 { 00072 HS_NONE, 00073 HS_HARDWARE, 00074 HS_XONXOFF 00075 }; 00076 00078 enum ParityFlags 00079 { 00080 PA_NONE, 00081 PA_EVEN, 00082 PA_ODD, 00083 // UNIX serial drivers only support even, odd, and no parity bit generation. 00084 PA_MARK, 00085 PA_SPACE 00086 }; 00087 00089 enum StopBits 00090 { 00091 SB_ONE, 00092 SB_ONE_5, // ????? returns an error ????? 00093 SB_TWO 00094 }; 00095 00097 SerialIO(); 00098 00100 virtual ~SerialIO(); 00101 00106 void setDeviceName(const char *Name) { m_DeviceName = Name; } 00107 00112 void setBaudRate(int BaudRate) { m_BaudRate = BaudRate; } 00113 00119 void changeBaudRate(int BaudRate); 00120 00126 void setMultiplier(double Multiplier = 1) { m_Multiplier = Multiplier; }; 00127 00131 void SetFormat(int ByteSize, ParityFlags Parity, int StopBits) 00132 { m_ByteSize = ByteSize; m_Parity = Parity; m_StopBits = StopBits; } 00133 00137 void setHandshake(HandshakeFlags Handshake) { m_Handshake = Handshake; } 00138 00144 void setBufferSize(int ReadBufSize, int WriteBufSize) 00145 { m_ReadBufSize = ReadBufSize; m_WriteBufSize = WriteBufSize; } 00146 00151 void setTimeout(double Timeout); 00152 00159 void setBytePeriod(double Period); 00160 00165 int open(); 00166 00170 void close(); 00171 00179 int readBlocking(char *Buffer, int Length); 00180 00181 00188 int readNonBlocking(char *Buffer, int Length); 00189 00195 int write(const char *Buffer, int Length); 00196 00200 int getSizeRXQueue(); 00201 00202 00205 void purge() 00206 { 00207 ::tcflush(m_Device, TCIOFLUSH); 00208 } 00209 00212 void purgeRx() { 00213 tcflush(m_Device, TCIFLUSH); 00214 } 00215 00220 void purgeTx() { 00221 tcflush(m_Device, TCOFLUSH); 00222 } 00223 00228 void flushTx() { 00229 tcdrain(m_Device); 00230 } 00231 00232 protected: 00233 ::termios m_tio; 00234 std::string m_DeviceName; 00235 int m_Device; 00236 int m_BaudRate; 00237 double m_Multiplier; 00238 int m_ByteSize, m_StopBits; 00239 ParityFlags m_Parity; 00240 HandshakeFlags m_Handshake; 00241 int m_ReadBufSize, m_WriteBufSize; 00242 double m_Timeout; 00243 ::timeval m_BytePeriod; 00244 bool m_ShortBytePeriod; 00245 }; 00246 00247 00248 #endif // 00249