2 FreeRTOS V7.4.0 - Copyright (C) 2013 Real Time Engineers Ltd.
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4 FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT
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5 http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 ***************************************************************************
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9 * FreeRTOS tutorial books are available in pdf and paperback. *
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10 * Complete, revised, and edited pdf reference manuals are also *
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13 * Purchasing FreeRTOS documentation will not only help you, by *
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14 * ensuring you get running as quickly as possible and with an *
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15 * in-depth knowledge of how to use FreeRTOS, it will also help *
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16 * the FreeRTOS project to continue with its mission of providing *
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17 * professional grade, cross platform, de facto standard solutions *
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18 * for microcontrollers - completely free of charge! *
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20 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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22 * Thank you for using FreeRTOS, and thank you for your support! *
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24 ***************************************************************************
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27 This file is part of the FreeRTOS distribution.
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29 FreeRTOS is free software; you can redistribute it and/or modify it under
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30 the terms of the GNU General Public License (version 2) as published by the
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31 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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33 >>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to
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34 distribute a combined work that includes FreeRTOS without being obliged to
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35 provide the source code for proprietary components outside of the FreeRTOS
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38 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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39 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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40 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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41 details. You should have received a copy of the GNU General Public License
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42 and the FreeRTOS license exception along with FreeRTOS; if not itcan be
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43 viewed here: http://www.freertos.org/a00114.html and also obtained by
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44 writing to Real Time Engineers Ltd., contact details for whom are available
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45 on the FreeRTOS WEB site.
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49 ***************************************************************************
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51 * Having a problem? Start by reading the FAQ "My application does *
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52 * not run, what could be wrong?" *
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54 * http://www.FreeRTOS.org/FAQHelp.html *
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56 ***************************************************************************
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59 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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60 license and Real Time Engineers Ltd. contact details.
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62 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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63 including FreeRTOS+Trace - an indispensable productivity tool, and our new
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64 fully thread aware and reentrant UDP/IP stack.
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66 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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67 Integrity Systems, who sell the code with commercial support,
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68 indemnification and middleware, under the OpenRTOS brand.
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70 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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71 engineered and independently SIL3 certified version for use in safety and
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72 mission critical applications that require provable dependability.
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75 /* Standard includes. */
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78 /* lwIP core includes */
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79 #include "lwip/opt.h"
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80 #include "lwip/sockets.h"
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82 /* FreeRTOS includes. */
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83 #include "FreeRTOS.h"
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86 /* Utils includes. */
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87 #include "CommandInterpreter.h"
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89 /* Dimensions the buffer into which input characters are placed. */
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90 #define cmdMAX_INPUT_SIZE 20
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92 /* Dimensions the buffer into which string outputs can be placed. */
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93 #define cmdMAX_OUTPUT_SIZE 1024
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95 /*-----------------------------------------------------------*/
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97 void vBasicSocketsCommandInterpreterTask( void *pvParameters )
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99 long lSocket, lClientFd, lBytes, lAddrLen = sizeof( struct sockaddr_in );
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100 struct sockaddr_in sLocalAddr;
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101 struct sockaddr_in client_addr;
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102 const signed char *pcWelcomeMessage = "FreeRTOS command server - connection accepted.\r\nType Help to view a list of registered commands.\r\n\r\n>";
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103 signed char cInChar, cInputIndex;
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104 static signed char cInputString[ cmdMAX_INPUT_SIZE ], cOutputString[ cmdMAX_OUTPUT_SIZE ];
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105 portBASE_TYPE xReturned;
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107 ( void ) pvParameters;
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109 lSocket = lwip_socket(AF_INET, SOCK_STREAM, 0);
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113 memset((char *)&sLocalAddr, 0, sizeof(sLocalAddr));
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114 sLocalAddr.sin_family = AF_INET;
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115 sLocalAddr.sin_len = sizeof(sLocalAddr);
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116 sLocalAddr.sin_addr.s_addr = htonl(INADDR_ANY);
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117 sLocalAddr.sin_port = ntohs( ( ( unsigned short ) 23 ) );
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119 if( lwip_bind( lSocket, ( struct sockaddr *) &sLocalAddr, sizeof( sLocalAddr ) ) < 0 )
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121 lwip_close( lSocket );
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122 vTaskDelete( NULL );
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125 if( lwip_listen( lSocket, 20 ) != 0 )
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127 lwip_close( lSocket );
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128 vTaskDelete( NULL );
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134 lClientFd = lwip_accept(lSocket, ( struct sockaddr * ) &client_addr, ( u32_t * ) &lAddrLen );
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136 if( lClientFd > 0L )
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138 lwip_send( lClientFd, pcWelcomeMessage, strlen( ( const char * ) pcWelcomeMessage ), 0 );
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141 memset( cInputString, 0x00, cmdMAX_INPUT_SIZE );
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145 lBytes = lwip_recv( lClientFd, &cInChar, sizeof( cInChar ), 0 );
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149 if( cInChar == '\n' )
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151 /* The input string has been terminated. Was the
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152 input a quit command? */
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153 if( strcmp( "quit", ( const char * ) cInputString ) == 0 )
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155 /* Set lBytes to 0 to close the connection. */
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160 /* The input string was not a quit command.
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161 Pass the string to the command interpreter. */
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164 xReturned = xCmdIntProcessCommand( cInputString, cOutputString, cmdMAX_OUTPUT_SIZE );
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165 lwip_send( lClientFd, cOutputString, strlen( ( const char * ) cOutputString ), 0 );
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167 } while( xReturned != pdFALSE );
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169 /* All the strings generated by the input
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170 command have been sent. Clear the input
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171 string ready to receive the next command. */
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173 memset( cInputString, 0x00, cmdMAX_INPUT_SIZE );
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174 lwip_send( lClientFd, "\r\n>", strlen( "\r\n>" ), 0 );
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179 if( cInChar == '\r' )
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181 /* Ignore the character. */
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183 else if( cInChar == '\b' )
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185 /* Backspace was pressed. Erase the last
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186 character in the string - if any. */
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187 if( cInputIndex > 0 )
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190 cInputString[ cInputIndex ] = '\0';
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195 /* A character was entered. Add it to the string
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196 entered so far. When a \n is entered the complete
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197 string will be passed to the command interpreter. */
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198 if( cInputIndex < cmdMAX_INPUT_SIZE )
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200 cInputString[ cInputIndex ] = cInChar;
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207 } while( lBytes > 0L );
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209 lwip_close( lClientFd );
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214 /* Will only get here if a listening socket could not be created. */
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215 vTaskDelete( NULL );
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