2 FreeRTOS V7.0.1 - Copyright (C) 2011 Real Time Engineers Ltd.
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5 ***************************************************************************
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7 * FreeRTOS tutorial books are available in pdf and paperback. *
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8 * Complete, revised, and edited pdf reference manuals are also *
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11 * Purchasing FreeRTOS documentation will not only help you, by *
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12 * ensuring you get running as quickly as possible and with an *
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13 * in-depth knowledge of how to use FreeRTOS, it will also help *
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14 * the FreeRTOS project to continue with its mission of providing *
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15 * professional grade, cross platform, de facto standard solutions *
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16 * for microcontrollers - completely free of charge! *
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18 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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20 * Thank you for using FreeRTOS, and thank you for your support! *
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22 ***************************************************************************
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25 This file is part of the FreeRTOS distribution.
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27 FreeRTOS is free software; you can redistribute it and/or modify it under
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28 the terms of the GNU General Public License (version 2) as published by the
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29 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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30 >>>NOTE<<< The modification to the GPL is included to allow you to
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31 distribute a combined work that includes FreeRTOS without being obliged to
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32 provide the source code for proprietary components outside of the FreeRTOS
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33 kernel. FreeRTOS is distributed in the hope that it will be useful, but
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34 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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35 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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36 more details. You should have received a copy of the GNU General Public
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37 License and the FreeRTOS license exception along with FreeRTOS; if not it
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38 can be viewed here: http://www.freertos.org/a00114.html and also obtained
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39 by writing to Richard Barry, contact details for whom are available on the
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44 http://www.FreeRTOS.org - Documentation, latest information, license and
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47 http://www.SafeRTOS.com - A version that is certified for use in safety
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50 http://www.OpenRTOS.com - Commercial support, development, porting,
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51 licensing and training services.
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54 /* Standard includes. */
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57 /* Scheduler includes. */
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58 #include "FreeRTOS.h"
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62 /* Demo includes. */
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64 #include "partest.h"
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68 #include "uip_arp.h"
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71 #include "clock-arch.h"
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73 /*-----------------------------------------------------------*/
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75 /* How long to wait before attempting to connect the MAC again. */
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76 #define uipINIT_WAIT ( 100 / portTICK_RATE_MS )
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78 /* Shortcut to the header within the Rx buffer. */
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79 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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81 /* Standard constant. */
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82 #define uipTOTAL_FRAME_HEADER_SIZE 54
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85 /*-----------------------------------------------------------*/
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88 * Setup the MAC address in the MAC itself, and in the uIP stack.
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90 static void prvSetMACAddress( void );
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93 * Port functions required by the uIP stack.
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95 void clock_init( void );
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96 clock_time_t clock_time( void );
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98 /*-----------------------------------------------------------*/
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100 /* The semaphore used by the ISR to wake the uIP task. */
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101 xSemaphoreHandle xEMACSemaphore;
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103 /* The buffer used by the uIP stack. In this case the pointer is used to
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104 point to one of the Rx buffers. */
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105 unsigned char *uip_buf = NULL;
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107 /*-----------------------------------------------------------*/
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109 void clock_init(void)
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111 /* This is done when the scheduler starts. */
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113 /*-----------------------------------------------------------*/
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115 clock_time_t clock_time( void )
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117 return xTaskGetTickCount();
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119 /*-----------------------------------------------------------*/
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121 void vuIP_Task( void *pvParameters )
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124 uip_ipaddr_t xIPAddr;
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125 struct timer periodic_timer, arp_timer;
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127 ( void ) pvParameters;
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129 /* Create the semaphore used by the ISR to wake this task. */
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130 vSemaphoreCreateBinary( xEMACSemaphore );
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132 /* Initialise the uIP stack. */
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133 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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134 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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136 uip_ipaddr( xIPAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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137 uip_sethostaddr( xIPAddr );
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138 uip_ipaddr( xIPAddr, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 );
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139 uip_setnetmask( xIPAddr );
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142 /* Initialise the MAC. */
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143 while( xEthInitialise() != pdPASS )
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145 vTaskDelay( uipINIT_WAIT );
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148 prvSetMACAddress();
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152 /* Is there received data ready to be processed? */
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153 uip_len = usGetMACRxData();
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155 if( ( uip_len > 0 ) && ( uip_buf != NULL ) )
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157 /* Standard uIP loop taken from the uIP manual. */
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158 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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163 /* If the above function invocation resulted in data that
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164 should be sent out on the network, the global variable
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165 uip_len is set to a value > 0. */
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169 vSendMACData( uip_len );
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172 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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176 /* If the above function invocation resulted in data that
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177 should be sent out on the network, the global variable
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178 uip_len is set to a value > 0. */
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181 vSendMACData( uip_len );
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187 if( ( timer_expired( &periodic_timer ) ) && ( uip_buf != NULL ) )
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189 timer_reset( &periodic_timer );
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190 for( i = 0; i < UIP_CONNS; i++ )
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194 /* If the above function invocation resulted in data that
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195 should be sent out on the network, the global variable
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196 uip_len is set to a value > 0. */
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200 vSendMACData( uip_len );
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204 /* Call the ARP timer function every 10 seconds. */
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205 if( timer_expired( &arp_timer ) )
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207 timer_reset( &arp_timer );
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213 /* We did not receive a packet, and there was no periodic
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214 processing to perform. Block for a fixed period. If a packet
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215 is received during this period we will be woken by the ISR
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216 giving us the Semaphore. */
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217 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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222 /*-----------------------------------------------------------*/
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224 static void prvSetMACAddress( void )
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226 struct uip_eth_addr xAddr;
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228 /* Configure the MAC address in the uIP stack. */
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229 xAddr.addr[ 0 ] = configMAC_ADDR0;
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230 xAddr.addr[ 1 ] = configMAC_ADDR1;
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231 xAddr.addr[ 2 ] = configMAC_ADDR2;
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232 xAddr.addr[ 3 ] = configMAC_ADDR3;
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233 xAddr.addr[ 4 ] = configMAC_ADDR4;
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234 xAddr.addr[ 5 ] = configMAC_ADDR5;
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235 uip_setethaddr( xAddr );
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237 /*-----------------------------------------------------------*/
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239 void vApplicationProcessFormInput( char *pcInputString )
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242 static char cMessageForDisplay[ 32 ];
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243 static const char *pcMessage = cMessageForDisplay;
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244 extern xQueueHandle xLCDQueue;
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246 /* Process the form input sent by the IO page of the served HTML. */
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248 c = strstr( pcInputString, "?" );
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251 /* Turn LED's on or off in accordance with the check box status. */
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252 if( strstr( c, "LED0=1" ) != NULL )
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255 vParTestSetLED( 3, 1 );
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260 vParTestSetLED( 3, 0 );
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263 /* Find the start of the text to be displayed on the LCD. */
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264 pcText = strstr( c, "LCD=" );
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265 pcText += strlen( "LCD=" );
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267 /* Terminate the file name for further processing within uIP. */
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270 /* Terminate the LCD string. */
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271 c = strstr( pcText, " " );
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277 /* Add required spaces. */
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278 while( ( c = strstr( pcText, "+" ) ) != NULL )
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283 /* Write the message to the LCD. */
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284 strcpy( cMessageForDisplay, pcText );
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285 xQueueSend( xLCDQueue, &pcMessage, portMAX_DELAY );
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