2 FreeRTOS V8.2.0rc1 - Copyright (C) 2014 Real Time Engineers Ltd.
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5 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 This file is part of the FreeRTOS distribution.
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9 FreeRTOS is free software; you can redistribute it and/or modify it under
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10 the terms of the GNU General Public License (version 2) as published by the
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11 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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13 >>! NOTE: The modification to the GPL is included to allow you to !<<
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14 >>! distribute a combined work that includes FreeRTOS without being !<<
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15 >>! obliged to provide the source code for proprietary components !<<
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16 >>! outside of the FreeRTOS kernel. !<<
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18 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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19 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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20 FOR A PARTICULAR PURPOSE. Full license text is available on the following
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21 link: http://www.freertos.org/a00114.html
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25 ***************************************************************************
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27 * Having a problem? Start by reading the FAQ "My application does *
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28 * not run, what could be wrong?". Have you defined configASSERT()? *
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30 * http://www.FreeRTOS.org/FAQHelp.html *
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32 ***************************************************************************
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34 ***************************************************************************
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36 * FreeRTOS provides completely free yet professionally developed, *
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37 * robust, strictly quality controlled, supported, and cross *
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38 * platform software that is more than just the market leader, it *
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39 * is the industry's de facto standard. *
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41 * Help yourself get started quickly while simultaneously helping *
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42 * to support the FreeRTOS project by purchasing a FreeRTOS *
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43 * tutorial book, reference manual, or both: *
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44 * http://www.FreeRTOS.org/Documentation *
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46 ***************************************************************************
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48 ***************************************************************************
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50 * Investing in training allows your team to be as productive as *
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51 * possible as early as possible, lowering your overall development *
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52 * cost, and enabling you to bring a more robust product to market *
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53 * earlier than would otherwise be possible. Richard Barry is both *
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54 * the architect and key author of FreeRTOS, and so also the world's *
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55 * leading authority on what is the world's most popular real time *
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56 * kernel for deeply embedded MCU designs. Obtaining your training *
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57 * from Richard ensures your team will gain directly from his in-depth *
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58 * product knowledge and years of usage experience. Contact Real Time *
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59 * Engineers Ltd to enquire about the FreeRTOS Masterclass, presented *
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60 * by Richard Barry: http://www.FreeRTOS.org/contact
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62 ***************************************************************************
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64 ***************************************************************************
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66 * You are receiving this top quality software for free. Please play *
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67 * fair and reciprocate by reporting any suspected issues and *
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68 * participating in the community forum: *
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69 * http://www.FreeRTOS.org/support *
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73 ***************************************************************************
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75 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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76 license and Real Time Engineers Ltd. contact details.
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78 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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79 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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80 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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82 http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
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83 Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
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85 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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86 Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
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87 licenses offer ticketed support, indemnification and commercial middleware.
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89 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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90 engineered and independently SIL3 certified version for use in safety and
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91 mission critical applications that require provable dependability.
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96 /* Standard includes. */
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99 /* Scheduler includes. */
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100 #include "FreeRTOS.h"
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103 #include "timers.h"
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105 /* uip includes. */
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106 #include "net/uip.h"
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107 #include "net/uip_arp.h"
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108 #include "apps/httpd/httpd.h"
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109 #include "sys/timer.h"
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110 #include "net/clock-arch.h"
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113 /* Demo includes. */
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114 #include "ParTest.h"
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116 /* The buffer used by the uIP stack to both receive and send. In this case,
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117 because the Ethernet driver is implemented to be zero copy - the uip_buf
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118 variable is just a pointer to an Ethernet buffer, and not a buffer in its own
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120 extern unsigned char *uip_buf;
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122 /* The ARP timer and the periodic timer share a callback function, so the
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123 respective timer IDs are used to determine which timer actually expired. These
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124 constants are assigned to the timer IDs. */
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125 #define uipARP_TIMER 0
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126 #define uipPERIODIC_TIMER 1
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128 /* The length of the queue used to send events from timers or the Ethernet
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129 driver to the uIP stack. */
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130 #define uipEVENT_QUEUE_LENGTH 10
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132 /* A block time of zero simply means "don't block". */
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133 #define uipDONT_BLOCK 0UL
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135 /* Shortcut to the header within the Rx buffer. */
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136 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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138 /*-----------------------------------------------------------*/
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141 * Setup the MAC address in the MAC itself, and in the uIP stack.
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143 static void prvSetMACAddress( void );
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146 * Perform any uIP initialisation required to ready the stack for http
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149 static void prvInitialise_uIP( void );
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152 * The callback function that is assigned to both the periodic timer and the
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155 static void prvUIPTimerCallback( TimerHandle_t xTimer );
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158 * Port functions required by the uIP stack.
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160 clock_time_t clock_time( void );
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162 /*-----------------------------------------------------------*/
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164 /* The queue used to send TCP/IP events to the uIP stack. */
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165 QueueHandle_t xEMACEventQueue = NULL;
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167 /*-----------------------------------------------------------*/
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169 clock_time_t clock_time( void )
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171 return xTaskGetTickCount();
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173 /*-----------------------------------------------------------*/
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175 void vuIP_Task( void *pvParameters )
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178 unsigned long ulNewEvent = 0UL, ulUIP_Events = 0UL;
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179 unsigned short usPacketLength;
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181 /* Just to prevent compiler warnings about the unused parameter. */
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182 ( void ) pvParameters;
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184 /* Initialise the uIP stack, configuring for web server usage. */
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185 prvInitialise_uIP();
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187 /* Initialise the MAC and PHY. */
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192 /* Is there received data ready to be processed? */
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193 usPacketLength = usEMACRead();
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195 /* Statements to be executed if data has been received on the Ethernet. */
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196 if( ( usPacketLength > 0U ) && ( uip_buf != NULL ) )
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198 uip_len = usPacketLength;
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200 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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205 /* If the above function invocation resulted in data that
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206 should be sent out on the network, the global variable
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207 uip_len is set to a value > 0. */
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214 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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218 /* If the above function invocation resulted in data that
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219 should be sent out on the network, the global variable
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220 uip_len is set to a value > 0. */
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229 /* Clear the RX event latched in ulUIP_Events - if one was latched. */
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230 ulUIP_Events &= ~uipETHERNET_RX_EVENT;
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233 /* Statements to be executed if the TCP/IP period timer has expired. */
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234 if( ( ulUIP_Events & uipPERIODIC_TIMER_EVENT ) != 0UL )
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236 ulUIP_Events &= ~uipPERIODIC_TIMER_EVENT;
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238 if( uip_buf != NULL )
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240 for( i = 0; i < UIP_CONNS; i++ )
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244 /* If the above function invocation resulted in data that
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245 should be sent out on the network, the global variable
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246 uip_len is set to a value > 0. */
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256 /* Statements to be executed if the ARP timer has expired. */
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257 if( ( ulUIP_Events & uipARP_TIMER_EVENT ) != 0 )
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259 ulUIP_Events &= ~uipARP_TIMER_EVENT;
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263 /* If all latched events have been cleared - block until another event
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265 if( ulUIP_Events == pdFALSE )
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267 xQueueReceive( xEMACEventQueue, &ulNewEvent, portMAX_DELAY );
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268 ulUIP_Events |= ulNewEvent;
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272 /*-----------------------------------------------------------*/
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274 static void prvSetMACAddress( void )
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276 struct uip_eth_addr xAddr;
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278 /* Configure the MAC address in the uIP stack. */
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279 xAddr.addr[ 0 ] = configMAC_ADDR0;
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280 xAddr.addr[ 1 ] = configMAC_ADDR1;
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281 xAddr.addr[ 2 ] = configMAC_ADDR2;
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282 xAddr.addr[ 3 ] = configMAC_ADDR3;
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283 xAddr.addr[ 4 ] = configMAC_ADDR4;
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284 xAddr.addr[ 5 ] = configMAC_ADDR5;
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285 uip_setethaddr( xAddr );
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287 /*-----------------------------------------------------------*/
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289 static void prvInitialise_uIP( void )
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291 uip_ipaddr_t xIPAddr;
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292 TimerHandle_t xARPTimer, xPeriodicTimer;
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295 uip_ipaddr( &xIPAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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296 uip_sethostaddr( &xIPAddr );
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297 uip_ipaddr( &xIPAddr, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 );
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298 uip_setnetmask( &xIPAddr );
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299 prvSetMACAddress();
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302 /* Create the queue used to sent TCP/IP events to the uIP stack. */
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303 xEMACEventQueue = xQueueCreate( uipEVENT_QUEUE_LENGTH, sizeof( unsigned long ) );
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305 /* Create and start the uIP timers. */
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306 xARPTimer = xTimerCreate( "ARPTimer", /* Just a name that is helpful for debugging, not used by the kernel. */
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307 ( 10000UL / portTICK_PERIOD_MS ), /* Timer period. */
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308 pdTRUE, /* Autor-reload. */
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309 ( void * ) uipARP_TIMER,
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310 prvUIPTimerCallback
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313 xPeriodicTimer = xTimerCreate( "PeriodicTimer",
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314 ( 500UL / portTICK_PERIOD_MS ),
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315 pdTRUE, /* Autor-reload. */
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316 ( void * ) uipPERIODIC_TIMER,
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317 prvUIPTimerCallback
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320 /* Sanity check that the timers were indeed created. */
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321 configASSERT( xARPTimer );
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322 configASSERT( xPeriodicTimer );
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323 configASSERT( xEMACEventQueue );
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325 /* These commands will block indefinitely until they succeed, so there is
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326 no point in checking their return values. */
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327 xTimerStart( xARPTimer, portMAX_DELAY );
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328 xTimerStart( xPeriodicTimer, portMAX_DELAY );
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330 /*-----------------------------------------------------------*/
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332 static void prvUIPTimerCallback( TimerHandle_t xTimer )
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334 static const unsigned long ulARPTimerExpired = uipARP_TIMER_EVENT;
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335 static const unsigned long ulPeriodicTimerExpired = uipPERIODIC_TIMER_EVENT;
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337 /* This is a time callback, so calls to xQueueSend() must not attempt to
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338 block. As this callback is assigned to both the ARP and Periodic timers, the
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339 first thing to do is ascertain which timer it was that actually expired. */
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340 switch( ( int ) pvTimerGetTimerID( xTimer ) )
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342 case uipARP_TIMER : xQueueSend( xEMACEventQueue, &ulARPTimerExpired, uipDONT_BLOCK );
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345 case uipPERIODIC_TIMER : xQueueSend( xEMACEventQueue, &ulPeriodicTimerExpired, uipDONT_BLOCK );
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348 default : /* Should not get here. */
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352 /*-----------------------------------------------------------*/
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354 void vApplicationProcessFormInput( char *pcInputString )
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357 const unsigned long ulYellowLED = 2UL;
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359 /* Only interested in processing form input if this is the IO page. */
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360 c = strstr( pcInputString, "io.shtml" );
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364 /* Is there a command in the string? */
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365 c = strstr( pcInputString, "?" );
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368 /* Turn the LEDs on or off in accordance with the check box status. */
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369 if( strstr( c, "LED0=1" ) != NULL )
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371 /* Turn the LEDs on. */
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372 vParTestSetLED( ulYellowLED, pdTRUE );
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376 /* Turn the LEDs off. */
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377 vParTestSetLED( ulYellowLED, pdFALSE );
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382 /* Some browsers will only imply that a check box is off. */
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383 vParTestSetLED( ulYellowLED, pdFALSE );
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387 /*-----------------------------------------------------------*/
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