2 FreeRTOS.org V5.3.1 - Copyright (C) 2003-2009 Richard Barry.
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4 This file is part of the FreeRTOS.org distribution.
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6 FreeRTOS.org is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License (version 2) as published
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8 by the Free Software Foundation and modified by the FreeRTOS exception.
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9 **NOTE** The exception to the GPL is included to allow you to distribute a
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10 combined work that includes FreeRTOS.org without being obliged to provide
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11 the source code for any proprietary components. Alternative commercial
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12 license and support terms are also available upon request. See the
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13 licensing section of http://www.FreeRTOS.org for full details.
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15 FreeRTOS.org is distributed in the hope that it will be useful, but WITHOUT
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16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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20 You should have received a copy of the GNU General Public License along
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21 with FreeRTOS.org; if not, write to the Free Software Foundation, Inc., 59
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22 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 ***************************************************************************
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27 * Get the FreeRTOS eBook! See http://www.FreeRTOS.org/Documentation *
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29 * This is a concise, step by step, 'hands on' guide that describes both *
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30 * general multitasking concepts and FreeRTOS specifics. It presents and *
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31 * explains numerous examples that are written using the FreeRTOS API. *
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32 * Full source code for all the examples is provided in an accompanying *
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35 ***************************************************************************
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39 Please ensure to read the configuration and relevant port sections of the
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40 online documentation.
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42 http://www.FreeRTOS.org - Documentation, latest information, license and
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45 http://www.SafeRTOS.com - A version that is certified for use in safety
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48 http://www.OpenRTOS.com - Commercial support, development, porting,
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49 licensing and training services.
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52 /* Standard includes. */
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55 /* Scheduler includes. */
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56 #include "FreeRTOS.h"
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62 #include "uip_arp.h"
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65 #include "clock-arch.h"
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67 /* Demo includes. */
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69 #include "EthDev_LPC17xx.h"
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72 #include "LPC17xx.h"
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73 #include "core_cm3.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
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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 /*-----------------------------------------------------------*/
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88 * Send the uIP buffer to the MAC.
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90 static void prvENET_Send(void);
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93 * Setup the MAC address in the MAC itself, and in the uIP stack.
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95 static void prvSetMACAddress( void );
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98 * Port functions required by the uIP stack.
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100 void clock_init( void );
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101 clock_time_t clock_time( void );
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103 /*-----------------------------------------------------------*/
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105 /* The semaphore used by the ISR to wake the uIP task. */
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106 extern xSemaphoreHandle xEMACSemaphore;
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108 /*-----------------------------------------------------------*/
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110 void clock_init(void)
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112 /* This is done when the scheduler starts. */
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114 /*-----------------------------------------------------------*/
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116 clock_time_t clock_time( void )
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118 return xTaskGetTickCount();
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120 /*-----------------------------------------------------------*/
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122 void vuIP_Task( void *pvParameters )
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125 uip_ipaddr_t xIPAddr;
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126 struct timer periodic_timer, arp_timer;
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127 extern void ( vEMAC_ISR_Wrapper )( void );
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129 ( void ) pvParameters;
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131 /* Create the semaphore used by the ISR to wake this task. */
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132 vSemaphoreCreateBinary( xEMACSemaphore );
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134 /* Initialise the uIP stack. */
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135 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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136 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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138 uip_ipaddr( xIPAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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139 uip_sethostaddr( xIPAddr );
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140 uip_ipaddr( xIPAddr, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 );
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141 uip_setnetmask( xIPAddr );
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144 /* Initialise the MAC. */
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145 while( Init_EMAC() != pdPASS )
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147 vTaskDelay( uipINIT_WAIT );
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150 portENTER_CRITICAL();
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152 ETH_INTENABLE = INT_RX_DONE;
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153 /* set the interrupt priority */
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154 NVIC_SetPriority( ENET_IRQn, configMAX_SYSCALL_INTERRUPT_PRIORITY );
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155 /* enable the interrupt */
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156 NVIC_EnableIRQ( ENET_IRQn );
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157 prvSetMACAddress();
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159 portEXIT_CRITICAL();
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164 /* Is there received data ready to be processed? */
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165 uip_len = uiGetEMACRxData( uip_buf );
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169 /* Standard uIP loop taken from the uIP manual. */
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170 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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175 /* If the above function invocation resulted in data that
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176 should be sent out on the network, the global variable
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177 uip_len is set to a value > 0. */
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184 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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188 /* If the above function invocation resulted in data that
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189 should be sent out on the network, the global variable
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190 uip_len is set to a value > 0. */
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199 if( timer_expired( &periodic_timer ) )
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201 timer_reset( &periodic_timer );
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202 for( i = 0; i < UIP_CONNS; i++ )
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206 /* If the above function invocation resulted in data that
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207 should be sent out on the network, the global variable
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208 uip_len is set to a value > 0. */
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216 /* Call the ARP timer function every 10 seconds. */
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217 if( timer_expired( &arp_timer ) )
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219 timer_reset( &arp_timer );
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225 /* We did not receive a packet, and there was no periodic
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226 processing to perform. Block for a fixed period. If a packet
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227 is received during this period we will be woken by the ISR
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228 giving us the Semaphore. */
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229 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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234 /*-----------------------------------------------------------*/
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236 static void prvENET_Send(void)
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240 /* Copy the header into the Tx buffer. */
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241 CopyToFrame_EMAC( uip_buf, uipTOTAL_FRAME_HEADER_SIZE );
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242 if( uip_len > uipTOTAL_FRAME_HEADER_SIZE )
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244 CopyToFrame_EMAC( uip_appdata, ( uip_len - uipTOTAL_FRAME_HEADER_SIZE ) );
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247 DoSend_EMAC( uip_len );
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251 /* Copy the header into the Tx buffer. */
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252 CopyToFrame_EMAC( uip_buf, uipTOTAL_FRAME_HEADER_SIZE );
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253 if( uip_len > uipTOTAL_FRAME_HEADER_SIZE )
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255 CopyToFrame_EMAC( uip_appdata, ( uip_len - uipTOTAL_FRAME_HEADER_SIZE ) );
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258 DoSend_EMAC( uip_len );
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260 /*-----------------------------------------------------------*/
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262 static void prvSetMACAddress( void )
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264 struct uip_eth_addr xAddr;
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266 /* Configure the MAC address in the uIP stack. */
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267 xAddr.addr[ 0 ] = configMAC_ADDR0;
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268 xAddr.addr[ 1 ] = configMAC_ADDR1;
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269 xAddr.addr[ 2 ] = configMAC_ADDR2;
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270 xAddr.addr[ 3 ] = configMAC_ADDR3;
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271 xAddr.addr[ 4 ] = configMAC_ADDR4;
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272 xAddr.addr[ 5 ] = configMAC_ADDR5;
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273 uip_setethaddr( xAddr );
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275 /*-----------------------------------------------------------*/
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277 void vApplicationProcessFormInput( portCHAR *pcInputString )
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280 static portCHAR cMessageForDisplay[ 32 ];
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281 extern xQueueHandle xLCDQueue;
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282 xLCDMessage xLCDMessage;
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284 /* Process the form input sent by the IO page of the served HTML. */
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286 c = strstr( pcInputString, "?" );
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289 /* Turn LED's on or off in accordance with the check box status. */
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290 if( strstr( c, "LED0=1" ) != NULL )
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293 vParTestSetLED( 1 << 7, 1 );
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298 vParTestSetLED( 1 << 7, 0 );
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301 /* Find the start of the text to be displayed on the LCD. */
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302 pcText = strstr( c, "LCD=" );
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303 pcText += strlen( "LCD=" );
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305 /* Terminate the file name for further processing within uIP. */
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308 /* Terminate the LCD string. */
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309 c = strstr( pcText, " " );
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315 /* Add required spaces. */
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316 while( ( c = strstr( pcText, "+" ) ) != NULL )
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321 /* Write the message to the LCD. */
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322 strcpy( cMessageForDisplay, pcText );
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323 xLCDMessage.pcMessage = cMessageForDisplay;
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324 xQueueSend( xLCDQueue, &xLCDMessage, portMAX_DELAY );
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