2 FreeRTOS V8.2.1 - Copyright (C) 2015 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 ***************************************************************************
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14 >>! NOTE: The modification to the GPL is included to allow you to !<<
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15 >>! distribute a combined work that includes FreeRTOS without being !<<
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16 >>! obliged to provide the source code for proprietary components !<<
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17 >>! outside of the FreeRTOS kernel. !<<
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18 ***************************************************************************
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20 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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21 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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22 FOR A PARTICULAR PURPOSE. Full license text is available on the following
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23 link: http://www.freertos.org/a00114.html
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25 ***************************************************************************
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27 * FreeRTOS provides completely free yet professionally developed, *
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28 * robust, strictly quality controlled, supported, and cross *
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29 * platform software that is more than just the market leader, it *
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30 * is the industry's de facto standard. *
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32 * Help yourself get started quickly while simultaneously helping *
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33 * to support the FreeRTOS project by purchasing a FreeRTOS *
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34 * tutorial book, reference manual, or both: *
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35 * http://www.FreeRTOS.org/Documentation *
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37 ***************************************************************************
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39 http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
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40 the FAQ page "My application does not run, what could be wrong?". Have you
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41 defined configASSERT()?
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43 http://www.FreeRTOS.org/support - In return for receiving this top quality
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44 embedded software for free we request you assist our global community by
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45 participating in the support forum.
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47 http://www.FreeRTOS.org/training - Investing in training allows your team to
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48 be as productive as possible as early as possible. Now you can receive
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49 FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
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50 Ltd, and the world's leading authority on the world's leading RTOS.
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52 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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53 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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54 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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56 http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
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57 Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
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59 http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
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60 Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
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61 licenses offer ticketed support, indemnification and commercial middleware.
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63 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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64 engineered and independently SIL3 certified version for use in safety and
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65 mission critical applications that require provable dependability.
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69 /* Standard includes. */
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72 /* Scheduler includes. */
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73 #include "FreeRTOS.h"
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78 #include "hw_types.h"
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80 #include "uip_arp.h"
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83 #include "clock-arch.h"
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84 #include "hw_ethernet.h"
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85 #include "ethernet.h"
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86 #include "hw_memmap.h"
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87 #include "lmi_flash.h"
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90 /* Demo includes. */
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92 #include "partest.h"
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93 #include "lcd_message.h"
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97 clock_time_t interval;
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101 /*-----------------------------------------------------------*/
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103 /* IP address configuration. */
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104 #define uipIP_ADDR0 172
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105 #define uipIP_ADDR1 25
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106 #define uipIP_ADDR2 218
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107 #define uipIP_ADDR3 19
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109 /* How long to wait before attempting to connect the MAC again. */
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110 #define uipINIT_WAIT 100
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112 /* Shortcut to the header within the Rx buffer. */
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113 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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115 /* Standard constant. */
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116 #define uipTOTAL_FRAME_HEADER_SIZE 54
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118 /*-----------------------------------------------------------*/
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121 * Send the uIP buffer to the MAC.
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123 static void prvENET_Send(void);
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126 * Setup the MAC address in the MAC itself, and in the uIP stack.
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128 static void prvSetMACAddress( void );
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131 * Port functions required by the uIP stack.
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133 void clock_init( void );
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134 clock_time_t clock_time( void );
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136 /*-----------------------------------------------------------*/
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138 /* The semaphore used by the ISR to wake the uIP task. */
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139 extern SemaphoreHandle_t xEMACSemaphore;
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141 /*-----------------------------------------------------------*/
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143 void clock_init(void)
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145 /* This is done when the scheduler starts. */
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147 /*-----------------------------------------------------------*/
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149 /* Define clock functions here to avoid header file name clash between uIP
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150 and the Luminary Micro driver library. */
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151 clock_time_t clock_time( void )
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153 return xTaskGetTickCount();
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155 extern void timer_set(struct timer *t, clock_time_t interval);
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156 extern int timer_expired(struct timer *t);
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157 extern void timer_reset(struct timer *t);
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162 void vuIP_Task( void *pvParameters )
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165 uip_ipaddr_t xIPAddr;
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166 struct timer periodic_timer, arp_timer;
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167 extern void ( vEMAC_ISR )( void );
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169 /* Enable/Reset the Ethernet Controller */
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170 SysCtlPeripheralEnable( SYSCTL_PERIPH_ETH );
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171 SysCtlPeripheralReset( SYSCTL_PERIPH_ETH );
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173 /* Create the semaphore used by the ISR to wake this task. */
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174 vSemaphoreCreateBinary( xEMACSemaphore );
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176 /* Initialise the uIP stack. */
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177 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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178 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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180 uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
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181 uip_sethostaddr( xIPAddr );
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184 while( vInitEMAC() != pdPASS )
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186 vTaskDelay( uipINIT_WAIT );
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188 prvSetMACAddress();
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193 /* Is there received data ready to be processed? */
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194 uip_len = uiGetEMACRxData( uip_buf );
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198 /* Standard uIP loop taken from the uIP manual. */
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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 if( timer_expired( &periodic_timer ) )
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231 timer_reset( &periodic_timer );
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232 for( i = 0; i < UIP_CONNS; i++ )
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236 /* If the above function invocation resulted in data that
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237 should be sent out on the network, the global variable
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238 uip_len is set to a value > 0. */
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246 /* Call the ARP timer function every 10 seconds. */
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247 if( timer_expired( &arp_timer ) )
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249 timer_reset( &arp_timer );
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255 /* We did not receive a packet, and there was no periodic
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256 processing to perform. Block for a fixed period. If a packet
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257 is received during this period we will be woken by the ISR
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258 giving us the Semaphore. */
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259 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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264 /*-----------------------------------------------------------*/
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266 static void prvENET_Send(void)
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269 vIncrementTxLength( uip_len );
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270 vSendBufferToMAC();
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272 /*-----------------------------------------------------------*/
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274 static void prvSetMACAddress( void )
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276 unsigned long ulUser0, ulUser1;
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277 unsigned char pucMACArray[8];
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278 struct uip_eth_addr xAddr;
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280 /* Get the device MAC address from flash */
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281 FlashUserGet(&ulUser0, &ulUser1);
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283 /* Convert the MAC address from flash into sequence of bytes. */
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284 pucMACArray[0] = ((ulUser0 >> 0) & 0xff);
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285 pucMACArray[1] = ((ulUser0 >> 8) & 0xff);
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286 pucMACArray[2] = ((ulUser0 >> 16) & 0xff);
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287 pucMACArray[3] = ((ulUser1 >> 0) & 0xff);
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288 pucMACArray[4] = ((ulUser1 >> 8) & 0xff);
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289 pucMACArray[5] = ((ulUser1 >> 16) & 0xff);
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291 /* Program the MAC address. */
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292 EthernetMACAddrSet(ETH_BASE, pucMACArray);
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294 xAddr.addr[ 0 ] = pucMACArray[0];
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295 xAddr.addr[ 1 ] = pucMACArray[1];
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296 xAddr.addr[ 2 ] = pucMACArray[2];
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297 xAddr.addr[ 3 ] = pucMACArray[3];
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298 xAddr.addr[ 4 ] = pucMACArray[4];
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299 xAddr.addr[ 5 ] = pucMACArray[5];
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300 uip_setethaddr( xAddr );
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302 /*-----------------------------------------------------------*/
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304 void vApplicationProcessFormInput( char *pcInputString, portBASE_TYPE xInputLength )
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307 static char cMessageForDisplay[ 32 ];
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308 extern QueueHandle_t xOLEDQueue;
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309 xOLEDMessage xOLEDMessage;
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311 /* Process the form input sent by the IO page of the served HTML. */
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313 c = strstr( pcInputString, "?" );
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317 /* Turn 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 vParTestSetLED( 0, 1 );
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324 vParTestSetLED( 0, 0 );
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327 /* Find the start of the text to be displayed on the LCD. */
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328 pcText = strstr( c, "LCD=" );
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329 pcText += strlen( "LCD=" );
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331 /* Terminate the file name for further processing within uIP. */
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334 /* Terminate the LCD string. */
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335 c = strstr( pcText, " " );
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341 /* Add required spaces. */
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342 while( ( c = strstr( pcText, "+" ) ) != NULL )
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347 /* Write the message to the LCD. */
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348 strcpy( cMessageForDisplay, pcText );
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349 xOLEDMessage.pcMessage = ( signed char * ) cMessageForDisplay;
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350 xQueueSend( xOLEDQueue, &xOLEDMessage, portMAX_DELAY );
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