2 FreeRTOS V7.2.0 - Copyright (C) 2012 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 ***************************************************************************
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46 * Having a problem? Start by reading the FAQ "My application does *
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47 * not run, what could be wrong? *
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49 * http://www.FreeRTOS.org/FAQHelp.html *
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51 ***************************************************************************
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54 http://www.FreeRTOS.org - Documentation, training, latest information,
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55 license and contact details.
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57 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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58 including FreeRTOS+Trace - an indispensable productivity tool.
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60 Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
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61 the code with commercial support, indemnification, and middleware, under
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62 the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
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63 provide a safety engineered and independently SIL3 certified version under
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64 the SafeRTOS brand: http://www.SafeRTOS.com.
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66 /* Standard includes. */
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69 /* Scheduler includes. */
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70 #include "FreeRTOS.h"
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76 #include "uip_arp.h"
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79 #include "clock-arch.h"
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81 /* Demo includes. */
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83 #include "partest.h"
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85 /*-----------------------------------------------------------*/
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87 /* MAC address configuration. */
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88 #define uipMAC_ADDR0 0x00
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89 #define uipMAC_ADDR1 0x12
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90 #define uipMAC_ADDR2 0x13
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91 #define uipMAC_ADDR3 0x10
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92 #define uipMAC_ADDR4 0x15
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93 #define uipMAC_ADDR5 0x11
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95 /* IP address configuration. */
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96 #define uipIP_ADDR0 172
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97 #define uipIP_ADDR1 25
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98 #define uipIP_ADDR2 218
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99 #define uipIP_ADDR3 16
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101 /* How long to wait before attempting to connect the MAC again. */
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102 #define uipINIT_WAIT 100
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104 /* Shortcut to the header within the Rx buffer. */
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105 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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107 /* Standard constant. */
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108 #define uipTOTAL_FRAME_HEADER_SIZE 54
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110 /*-----------------------------------------------------------*/
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113 * Send the uIP buffer to the MAC.
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115 static void prvENET_Send(void);
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118 * Setup the MAC address in the MAC itself, and in the uIP stack.
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120 static void prvSetMACAddress( void );
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123 * Port functions required by the uIP stack.
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125 void clock_init( void );
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126 clock_time_t clock_time( void );
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128 /*-----------------------------------------------------------*/
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130 /* The semaphore used by the ISR to wake the uIP task. */
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131 extern xSemaphoreHandle xEMACSemaphore;
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133 /*-----------------------------------------------------------*/
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135 void clock_init(void)
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137 /* This is done when the scheduler starts. */
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139 /*-----------------------------------------------------------*/
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141 clock_time_t clock_time( void )
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143 return xTaskGetTickCount();
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145 /*-----------------------------------------------------------*/
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147 void vuIP_Task( void *pvParameters )
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150 uip_ipaddr_t xIPAddr;
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151 struct timer periodic_timer, arp_timer;
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152 extern void ( vEMAC_ISR_Wrapper )( void );
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154 /* Create the semaphore used by the ISR to wake this task. */
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155 vSemaphoreCreateBinary( xEMACSemaphore );
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157 /* Initialise the uIP stack. */
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158 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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159 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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161 uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
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162 uip_sethostaddr( xIPAddr );
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165 /* Initialise the MAC. */
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166 while( Init_EMAC() != pdPASS )
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168 vTaskDelay( uipINIT_WAIT );
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171 portENTER_CRITICAL();
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173 MAC_INTENABLE = INT_RX_DONE;
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174 VICIntEnable |= 0x00200000;
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175 VICVectAddr21 = ( portLONG ) vEMAC_ISR_Wrapper;
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176 prvSetMACAddress();
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178 portEXIT_CRITICAL();
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183 /* Is there received data ready to be processed? */
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184 uip_len = uiGetEMACRxData( uip_buf );
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188 /* Standard uIP loop taken from the uIP manual. */
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189 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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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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203 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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207 /* If the above function invocation resulted in data that
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208 should be sent out on the network, the global variable
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209 uip_len is set to a value > 0. */
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218 if( timer_expired( &periodic_timer ) )
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220 timer_reset( &periodic_timer );
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221 for( i = 0; i < UIP_CONNS; i++ )
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225 /* If the above function invocation resulted in data that
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226 should be sent out on the network, the global variable
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227 uip_len is set to a value > 0. */
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235 /* Call the ARP timer function every 10 seconds. */
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236 if( timer_expired( &arp_timer ) )
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238 timer_reset( &arp_timer );
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244 /* We did not receive a packet, and there was no periodic
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245 processing to perform. Block for a fixed period. If a packet
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246 is received during this period we will be woken by the ISR
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247 giving us the Semaphore. */
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248 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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253 /*-----------------------------------------------------------*/
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255 static void prvENET_Send(void)
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259 /* Copy the header into the Tx buffer. */
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260 CopyToFrame_EMAC( uip_buf, uipTOTAL_FRAME_HEADER_SIZE );
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261 if( uip_len > uipTOTAL_FRAME_HEADER_SIZE )
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263 CopyToFrame_EMAC( uip_appdata, ( uip_len - uipTOTAL_FRAME_HEADER_SIZE ) );
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266 DoSend_EMAC( uip_len );
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268 /*-----------------------------------------------------------*/
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270 static void prvSetMACAddress( void )
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272 struct uip_eth_addr xAddr;
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274 /* Configure the MAC address in the uIP stack. */
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275 xAddr.addr[ 0 ] = uipMAC_ADDR0;
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276 xAddr.addr[ 1 ] = uipMAC_ADDR1;
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277 xAddr.addr[ 2 ] = uipMAC_ADDR2;
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278 xAddr.addr[ 3 ] = uipMAC_ADDR3;
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279 xAddr.addr[ 4 ] = uipMAC_ADDR4;
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280 xAddr.addr[ 5 ] = uipMAC_ADDR5;
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281 uip_setethaddr( xAddr );
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283 /*-----------------------------------------------------------*/
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285 void vApplicationProcessFormInput( portCHAR *pcInputString, portBASE_TYPE xInputLength )
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288 static portCHAR cMessageForDisplay[ 32 ];
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289 extern xQueueHandle xLCDQueue;
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290 xLCDMessage xLCDMessage;
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292 /* Process the form input sent by the IO page of the served HTML. */
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294 c = strstr( pcInputString, "?" );
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297 /* Turn LED's on or off in accordance with the check box status. */
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298 if( strstr( c, "LED0=1" ) != NULL )
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300 vParTestSetLED( 5, 0 );
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304 vParTestSetLED( 5, 1 );
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307 if( strstr( c, "LED1=1" ) != NULL )
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309 vParTestSetLED( 6, 0 );
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313 vParTestSetLED( 6, 1 );
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316 if( strstr( c, "LED2=1" ) != NULL )
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318 vParTestSetLED( 7, 0 );
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322 vParTestSetLED( 7, 1 );
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325 /* Find the start of the text to be displayed on the LCD. */
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326 pcText = strstr( c, "LCD=" );
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327 pcText += strlen( "LCD=" );
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329 /* Terminate the file name for further processing within uIP. */
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332 /* Terminate the LCD string. */
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333 c = strstr( pcText, " " );
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339 /* Add required spaces. */
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340 while( ( c = strstr( pcText, "+" ) ) != NULL )
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345 /* Write the message to the LCD. */
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346 strcpy( cMessageForDisplay, pcText );
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347 xLCDMessage.xColumn = 0;
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348 xLCDMessage.pcMessage = cMessageForDisplay;
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349 xQueueSend( xLCDQueue, &xLCDMessage, portMAX_DELAY );
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