2 FreeRTOS V7.4.0 - Copyright (C) 2013 Real Time Engineers Ltd.
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4 FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT
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5 http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 ***************************************************************************
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9 * FreeRTOS tutorial books are available in pdf and paperback. *
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10 * Complete, revised, and edited pdf reference manuals are also *
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13 * Purchasing FreeRTOS documentation will not only help you, by *
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14 * ensuring you get running as quickly as possible and with an *
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15 * in-depth knowledge of how to use FreeRTOS, it will also help *
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16 * the FreeRTOS project to continue with its mission of providing *
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17 * professional grade, cross platform, de facto standard solutions *
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18 * for microcontrollers - completely free of charge! *
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20 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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22 * Thank you for using FreeRTOS, and thank you for your support! *
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24 ***************************************************************************
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27 This file is part of the FreeRTOS distribution.
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29 FreeRTOS is free software; you can redistribute it and/or modify it under
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30 the terms of the GNU General Public License (version 2) as published by the
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31 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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33 >>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to
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34 distribute a combined work that includes FreeRTOS without being obliged to
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35 provide the source code for proprietary components outside of the FreeRTOS
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38 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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39 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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40 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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41 details. You should have received a copy of the GNU General Public License
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42 and the FreeRTOS license exception along with FreeRTOS; if not itcan be
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43 viewed here: http://www.freertos.org/a00114.html and also obtained by
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44 writing to Real Time Engineers Ltd., contact details for whom are available
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45 on the FreeRTOS WEB site.
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49 ***************************************************************************
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51 * Having a problem? Start by reading the FAQ "My application does *
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52 * not run, what could be wrong?" *
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54 * http://www.FreeRTOS.org/FAQHelp.html *
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56 ***************************************************************************
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59 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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60 license and Real Time Engineers Ltd. contact details.
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62 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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63 including FreeRTOS+Trace - an indispensable productivity tool, and our new
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64 fully thread aware and reentrant UDP/IP stack.
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66 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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67 Integrity Systems, who sell the code with commercial support,
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68 indemnification and middleware, under the OpenRTOS brand.
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70 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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71 engineered and independently SIL3 certified version for use in safety and
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72 mission critical applications that require provable dependability.
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74 /* Standard includes. */
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77 /* Scheduler includes. */
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78 #include "FreeRTOS.h"
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83 #include "hw_types.h"
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85 #include "uip_arp.h"
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88 #include "clock-arch.h"
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89 #include "hw_ethernet.h"
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90 #include "ethernet.h"
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91 #include "hw_memmap.h"
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92 #include "lmi_flash.h"
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95 /* Demo includes. */
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97 #include "partest.h"
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98 #include "lcd_message.h"
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101 clock_time_t start;
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102 clock_time_t interval;
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106 /*-----------------------------------------------------------*/
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108 /* IP address configuration. */
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109 #define uipIP_ADDR0 172
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110 #define uipIP_ADDR1 25
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111 #define uipIP_ADDR2 218
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112 #define uipIP_ADDR3 19
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114 /* How long to wait before attempting to connect the MAC again. */
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115 #define uipINIT_WAIT 100
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117 /* Shortcut to the header within the Rx buffer. */
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118 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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120 /* Standard constant. */
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121 #define uipTOTAL_FRAME_HEADER_SIZE 54
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123 /*-----------------------------------------------------------*/
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126 * Send the uIP buffer to the MAC.
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128 static void prvENET_Send(void);
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131 * Setup the MAC address in the MAC itself, and in the uIP stack.
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133 static void prvSetMACAddress( void );
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136 * Port functions required by the uIP stack.
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138 void clock_init( void );
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139 clock_time_t clock_time( void );
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141 /*-----------------------------------------------------------*/
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143 /* The semaphore used by the ISR to wake the uIP task. */
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144 extern xSemaphoreHandle xEMACSemaphore;
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146 /*-----------------------------------------------------------*/
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148 void clock_init(void)
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150 /* This is done when the scheduler starts. */
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152 /*-----------------------------------------------------------*/
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154 /* Define clock functions here to avoid header file name clash between uIP
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155 and the Luminary Micro driver library. */
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156 clock_time_t clock_time( void )
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158 return xTaskGetTickCount();
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160 extern void timer_set(struct timer *t, clock_time_t interval);
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161 extern int timer_expired(struct timer *t);
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162 extern void timer_reset(struct timer *t);
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167 void vuIP_Task( void *pvParameters )
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170 uip_ipaddr_t xIPAddr;
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171 struct timer periodic_timer, arp_timer;
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172 extern void ( vEMAC_ISR )( void );
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174 /* Enable/Reset the Ethernet Controller */
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175 SysCtlPeripheralEnable( SYSCTL_PERIPH_ETH );
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176 SysCtlPeripheralReset( SYSCTL_PERIPH_ETH );
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178 /* Create the semaphore used by the ISR to wake this task. */
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179 vSemaphoreCreateBinary( xEMACSemaphore );
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181 /* Initialise the uIP stack. */
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182 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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183 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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185 uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
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186 uip_sethostaddr( xIPAddr );
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189 while( vInitEMAC() != pdPASS )
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191 vTaskDelay( uipINIT_WAIT );
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193 prvSetMACAddress();
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198 /* Is there received data ready to be processed? */
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199 uip_len = uiGetEMACRxData( uip_buf );
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203 /* Standard uIP loop taken from the uIP manual. */
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205 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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210 /* If the above function invocation resulted in data that
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211 should be sent out on the network, the global variable
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212 uip_len is set to a value > 0. */
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219 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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223 /* If the above function invocation resulted in data that
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224 should be sent out on the network, the global variable
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225 uip_len is set to a value > 0. */
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234 if( timer_expired( &periodic_timer ) )
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236 timer_reset( &periodic_timer );
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237 for( i = 0; i < UIP_CONNS; i++ )
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241 /* If the above function invocation resulted in data that
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242 should be sent out on the network, the global variable
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243 uip_len is set to a value > 0. */
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251 /* Call the ARP timer function every 10 seconds. */
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252 if( timer_expired( &arp_timer ) )
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254 timer_reset( &arp_timer );
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260 /* We did not receive a packet, and there was no periodic
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261 processing to perform. Block for a fixed period. If a packet
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262 is received during this period we will be woken by the ISR
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263 giving us the Semaphore. */
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264 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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269 /*-----------------------------------------------------------*/
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271 static void prvENET_Send(void)
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274 vIncrementTxLength( uip_len );
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275 vSendBufferToMAC();
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277 /*-----------------------------------------------------------*/
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279 static void prvSetMACAddress( void )
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281 unsigned portLONG ulUser0, ulUser1;
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282 unsigned char pucMACArray[8];
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283 struct uip_eth_addr xAddr;
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285 /* Get the device MAC address from flash */
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286 FlashUserGet(&ulUser0, &ulUser1);
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288 /* Convert the MAC address from flash into sequence of bytes. */
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289 pucMACArray[0] = ((ulUser0 >> 0) & 0xff);
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290 pucMACArray[1] = ((ulUser0 >> 8) & 0xff);
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291 pucMACArray[2] = ((ulUser0 >> 16) & 0xff);
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292 pucMACArray[3] = ((ulUser1 >> 0) & 0xff);
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293 pucMACArray[4] = ((ulUser1 >> 8) & 0xff);
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294 pucMACArray[5] = ((ulUser1 >> 16) & 0xff);
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296 /* Program the MAC address. */
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297 EthernetMACAddrSet(ETH_BASE, pucMACArray);
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299 xAddr.addr[ 0 ] = pucMACArray[0];
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300 xAddr.addr[ 1 ] = pucMACArray[1];
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301 xAddr.addr[ 2 ] = pucMACArray[2];
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302 xAddr.addr[ 3 ] = pucMACArray[3];
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303 xAddr.addr[ 4 ] = pucMACArray[4];
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304 xAddr.addr[ 5 ] = pucMACArray[5];
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305 uip_setethaddr( xAddr );
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307 /*-----------------------------------------------------------*/
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309 void vApplicationProcessFormInput( portCHAR *pcInputString, portBASE_TYPE xInputLength )
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312 static portCHAR cMessageForDisplay[ 32 ];
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313 extern xQueueHandle xOLEDQueue;
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314 xOLEDMessage xOLEDMessage;
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316 /* Process the form input sent by the IO page of the served HTML. */
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318 c = strstr( pcInputString, "?" );
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322 /* Turn LED's on or off in accordance with the check box status. */
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323 if( strstr( c, "LED0=1" ) != NULL )
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325 vParTestSetLED( 0, 1 );
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329 vParTestSetLED( 0, 0 );
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332 /* Find the start of the text to be displayed on the LCD. */
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333 pcText = strstr( c, "LCD=" );
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334 pcText += strlen( "LCD=" );
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336 /* Terminate the file name for further processing within uIP. */
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339 /* Terminate the LCD string. */
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340 c = strstr( pcText, " " );
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346 /* Add required spaces. */
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347 while( ( c = strstr( pcText, "+" ) ) != NULL )
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352 /* Write the message to the LCD. */
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353 strcpy( cMessageForDisplay, pcText );
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354 xOLEDMessage.pcMessage = ( signed portCHAR * ) cMessageForDisplay;
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355 xQueueSend( xOLEDQueue, &xOLEDMessage, portMAX_DELAY );
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