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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64 #include "net/uip.h"
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65 #include "net/uip_arp.h"
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66 #include "apps/httpd/httpd.h"
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67 #include "sys/timer.h"
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68 #include "net/clock-arch.h"
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69 #include "r_ether.h"
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71 /* Demo includes. */
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72 #include "ParTest.h"
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74 /*-----------------------------------------------------------*/
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76 /* How long to wait before attempting to connect the MAC again. */
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77 #define uipINIT_WAIT ( 100 / portTICK_RATE_MS )
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79 /* Shortcut to the header within the Rx buffer. */
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80 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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82 /* Standard constant. */
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83 #define uipTOTAL_FRAME_HEADER_SIZE 54
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85 /* The ARP timer and the periodic timer share a callback function, so the
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86 respective timer IDs are used to determine which timer actually expired. These
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87 constants are assigned to the timer IDs. */
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88 #define uipARP_TIMER 0
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89 #define uipPERIODIC_TIMER 1
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91 /* A block time of zero ticks simply means, "don't block". */
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92 #define uipDONT_BLOCK 0UL
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94 /*-----------------------------------------------------------*/
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97 * Setup the MAC address in the MAC itself, and in the uIP stack.
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99 static void prvSetMACAddress( void );
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102 * Perform any uIP initialisation necessary.
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104 static void prvInitialise_uIP( void );
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107 * The callback function that is assigned to both the periodic timer and the
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110 static void prvUIPTimerCallback( xTimerHandle xTimer );
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113 * Port functions required by the uIP stack.
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115 clock_time_t clock_time( void );
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117 /*-----------------------------------------------------------*/
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119 /* The queue used to send TCP/IP events to the uIP stack. */
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120 xQueueHandle xEMACEventQueue = NULL;
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122 /*-----------------------------------------------------------*/
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124 clock_time_t clock_time( void )
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126 return xTaskGetTickCount();
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128 /*-----------------------------------------------------------*/
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130 void vuIP_Task( void *pvParameters )
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133 unsigned long ulNewEvent = 0UL;
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134 unsigned long ulUIP_Events = 0UL;
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136 ( void ) pvParameters;
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138 /* Initialise the uIP stack. */
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139 prvInitialise_uIP();
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141 /* Initialise the MAC. */
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144 while( lEMACWaitForLink() != pdPASS )
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146 vTaskDelay( uipINIT_WAIT );
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151 if( ( ulUIP_Events & uipETHERNET_RX_EVENT ) != 0UL )
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153 /* Is there received data ready to be processed? */
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154 uip_len = ( unsigned short ) ulEMACRead();
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156 if( ( uip_len > 0 ) && ( uip_buf != NULL ) )
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158 /* Standard uIP loop taken from the uIP manual. */
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159 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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164 /* If the above function invocation resulted in data that
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165 should be sent out on the network, the global variable
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166 uip_len is set to a value > 0. */
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173 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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177 /* If the above function invocation resulted in data that
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178 should be sent out on the network, the global variable
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179 uip_len is set to a value > 0. */
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188 ulUIP_Events &= ~uipETHERNET_RX_EVENT;
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192 if( ( ulUIP_Events & uipPERIODIC_TIMER_EVENT ) != 0UL )
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194 ulUIP_Events &= ~uipPERIODIC_TIMER_EVENT;
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196 for( i = 0; i < UIP_CONNS; i++ )
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200 /* If the above function invocation resulted in data that
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201 should be sent out on the network, the global variable
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202 uip_len is set to a value > 0. */
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211 /* Call the ARP timer function every 10 seconds. */
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212 if( ( ulUIP_Events & uipARP_TIMER_EVENT ) != 0 )
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214 ulUIP_Events &= ~uipARP_TIMER_EVENT;
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218 if( ulUIP_Events == pdFALSE )
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220 xQueueReceive( xEMACEventQueue, &ulNewEvent, portMAX_DELAY );
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221 ulUIP_Events |= ulNewEvent;
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225 /*-----------------------------------------------------------*/
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227 static void prvInitialise_uIP( void )
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229 xTimerHandle xARPTimer, xPeriodicTimer;
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230 uip_ipaddr_t xIPAddr;
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231 const unsigned long ul_uIPEventQueueLength = 10UL;
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233 /* Initialise the uIP stack. */
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235 uip_ipaddr( &xIPAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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236 uip_sethostaddr( &xIPAddr );
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237 uip_ipaddr( &xIPAddr, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 );
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238 uip_setnetmask( &xIPAddr );
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239 prvSetMACAddress();
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242 /* Create the queue used to sent TCP/IP events to the uIP stack. */
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243 xEMACEventQueue = xQueueCreate( ul_uIPEventQueueLength, sizeof( unsigned long ) );
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245 /* Create and start the uIP timers. */
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246 xARPTimer = xTimerCreate( "ARPTimer", /* Just a name that is helpful for debugging, not used by the kernel. */
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247 ( 10000UL / portTICK_RATE_MS ), /* Timer period. */
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248 pdTRUE, /* Autor-reload. */
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249 ( void * ) uipARP_TIMER,
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250 prvUIPTimerCallback
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253 xPeriodicTimer = xTimerCreate( "PeriodicTimer",
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254 ( 500 / portTICK_RATE_MS ),
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255 pdTRUE, /* Autor-reload. */
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256 ( void * ) uipPERIODIC_TIMER,
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257 prvUIPTimerCallback
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260 configASSERT( xARPTimer );
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261 configASSERT( xPeriodicTimer );
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263 xTimerStart( xARPTimer, portMAX_DELAY );
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264 xTimerStart( xPeriodicTimer, portMAX_DELAY );
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266 /*-----------------------------------------------------------*/
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268 static void prvUIPTimerCallback( xTimerHandle xTimer )
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270 static const unsigned long ulARPTimerExpired = uipARP_TIMER_EVENT;
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271 static const unsigned long ulPeriodicTimerExpired = uipPERIODIC_TIMER_EVENT;
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273 /* This is a time callback, so calls to xQueueSend() must not attempt to
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275 switch( ( int ) pvTimerGetTimerID( xTimer ) )
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277 case uipARP_TIMER : xQueueSend( xEMACEventQueue, &ulARPTimerExpired, uipDONT_BLOCK );
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280 case uipPERIODIC_TIMER : xQueueSend( xEMACEventQueue, &ulPeriodicTimerExpired, uipDONT_BLOCK );
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283 default : /* Should not get here. */
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287 /*-----------------------------------------------------------*/
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289 static void prvSetMACAddress( void )
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291 struct uip_eth_addr xAddr;
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293 /* Configure the MAC address in the uIP stack. */
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294 xAddr.addr[ 0 ] = configMAC_ADDR0;
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295 xAddr.addr[ 1 ] = configMAC_ADDR1;
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296 xAddr.addr[ 2 ] = configMAC_ADDR2;
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297 xAddr.addr[ 3 ] = configMAC_ADDR3;
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298 xAddr.addr[ 4 ] = configMAC_ADDR4;
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299 xAddr.addr[ 5 ] = configMAC_ADDR5;
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300 uip_setethaddr( xAddr );
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302 /*-----------------------------------------------------------*/
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304 void vApplicationProcessFormInput( char *pcInputString )
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308 /* Only interested in processing form input if this is the IO page. */
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309 c = strstr( pcInputString, "io.shtml" );
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313 /* Is there a command in the string? */
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314 c = strstr( pcInputString, "?" );
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317 /* Turn the LED's on or off in accordance with the check box status. */
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318 if( strstr( c, "LED0=1" ) != NULL )
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320 /* Turn the LEDs on. */
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321 vParTestSetLED( 7, 1 );
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322 vParTestSetLED( 8, 1 );
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323 vParTestSetLED( 9, 1 );
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324 vParTestSetLED( 10, 1 );
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328 /* Turn the LEDs off. */
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329 vParTestSetLED( 7, 0 );
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330 vParTestSetLED( 8, 0 );
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331 vParTestSetLED( 9, 0 );
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332 vParTestSetLED( 10, 0 );
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337 /* Commands to turn LEDs off are not always explicit. */
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338 vParTestSetLED( 7, 0 );
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339 vParTestSetLED( 8, 0 );
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340 vParTestSetLED( 9, 0 );
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341 vParTestSetLED( 10, 0 );
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