2 FreeRTOS V7.1.1 - 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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75 #include "hw_types.h"
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77 #include "uip_arp.h"
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80 #include "clock-arch.h"
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81 #include "hw_ethernet.h"
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82 #include "ethernet.h"
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83 #include "hw_memmap.h"
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84 #include "lmi_flash.h"
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87 /* Demo includes. */
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89 #include "partest.h"
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90 #include "lcd_message.h"
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94 clock_time_t interval;
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98 /*-----------------------------------------------------------*/
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100 /* IP address configuration. */
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101 #define uipIP_ADDR0 172
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102 #define uipIP_ADDR1 25
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103 #define uipIP_ADDR2 218
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104 #define uipIP_ADDR3 19
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106 /* How long to wait before attempting to connect the MAC again. */
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107 #define uipINIT_WAIT 100
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109 /* Shortcut to the header within the Rx buffer. */
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110 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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112 /* Standard constant. */
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113 #define uipTOTAL_FRAME_HEADER_SIZE 54
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115 /*-----------------------------------------------------------*/
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118 * Send the uIP buffer to the MAC.
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120 static void prvENET_Send(void);
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123 * Setup the MAC address in the MAC itself, and in the uIP stack.
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125 static void prvSetMACAddress( void );
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128 * Port functions required by the uIP stack.
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130 void clock_init( void );
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131 clock_time_t clock_time( void );
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133 /*-----------------------------------------------------------*/
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135 /* The semaphore used by the ISR to wake the uIP task. */
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136 extern xSemaphoreHandle xEMACSemaphore;
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138 /*-----------------------------------------------------------*/
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140 void clock_init(void)
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142 /* This is done when the scheduler starts. */
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144 /*-----------------------------------------------------------*/
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146 /* Define clock functions here to avoid header file name clash between uIP
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147 and the Luminary Micro driver library. */
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148 clock_time_t clock_time( void )
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150 return xTaskGetTickCount();
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152 extern void timer_set(struct timer *t, clock_time_t interval);
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153 extern int timer_expired(struct timer *t);
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154 extern void timer_reset(struct timer *t);
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159 void vuIP_Task( void *pvParameters )
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162 uip_ipaddr_t xIPAddr;
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163 struct timer periodic_timer, arp_timer;
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164 extern void ( vEMAC_ISR )( void );
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166 /* Enable/Reset the Ethernet Controller */
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167 SysCtlPeripheralEnable( SYSCTL_PERIPH_ETH );
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168 SysCtlPeripheralReset( SYSCTL_PERIPH_ETH );
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170 /* Create the semaphore used by the ISR to wake this task. */
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171 vSemaphoreCreateBinary( xEMACSemaphore );
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173 /* Initialise the uIP stack. */
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174 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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175 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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177 uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
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178 uip_sethostaddr( xIPAddr );
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181 while( vInitEMAC() != pdPASS )
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183 vTaskDelay( uipINIT_WAIT );
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185 prvSetMACAddress();
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190 /* Is there received data ready to be processed? */
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191 uip_len = uiGetEMACRxData( uip_buf );
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195 /* Standard uIP loop taken from the uIP manual. */
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197 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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202 /* If the above function invocation resulted in data that
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203 should be sent out on the network, the global variable
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204 uip_len is set to a value > 0. */
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211 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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215 /* If the above function invocation resulted in data that
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216 should be sent out on the network, the global variable
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217 uip_len is set to a value > 0. */
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226 if( timer_expired( &periodic_timer ) )
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228 timer_reset( &periodic_timer );
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229 for( i = 0; i < UIP_CONNS; i++ )
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233 /* If the above function invocation resulted in data that
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234 should be sent out on the network, the global variable
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235 uip_len is set to a value > 0. */
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243 /* Call the ARP timer function every 10 seconds. */
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244 if( timer_expired( &arp_timer ) )
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246 timer_reset( &arp_timer );
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252 /* We did not receive a packet, and there was no periodic
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253 processing to perform. Block for a fixed period. If a packet
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254 is received during this period we will be woken by the ISR
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255 giving us the Semaphore. */
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256 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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261 /*-----------------------------------------------------------*/
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263 static void prvENET_Send(void)
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266 vIncrementTxLength( uip_len );
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267 vSendBufferToMAC();
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269 /*-----------------------------------------------------------*/
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271 static void prvSetMACAddress( void )
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273 unsigned portLONG ulUser0, ulUser1;
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274 unsigned char pucMACArray[8];
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275 struct uip_eth_addr xAddr;
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277 /* Get the device MAC address from flash */
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278 FlashUserGet(&ulUser0, &ulUser1);
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280 /* Convert the MAC address from flash into sequence of bytes. */
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281 pucMACArray[0] = ((ulUser0 >> 0) & 0xff);
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282 pucMACArray[1] = ((ulUser0 >> 8) & 0xff);
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283 pucMACArray[2] = ((ulUser0 >> 16) & 0xff);
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284 pucMACArray[3] = ((ulUser1 >> 0) & 0xff);
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285 pucMACArray[4] = ((ulUser1 >> 8) & 0xff);
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286 pucMACArray[5] = ((ulUser1 >> 16) & 0xff);
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288 /* Program the MAC address. */
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289 EthernetMACAddrSet(ETH_BASE, pucMACArray);
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291 xAddr.addr[ 0 ] = pucMACArray[0];
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292 xAddr.addr[ 1 ] = pucMACArray[1];
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293 xAddr.addr[ 2 ] = pucMACArray[2];
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294 xAddr.addr[ 3 ] = pucMACArray[3];
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295 xAddr.addr[ 4 ] = pucMACArray[4];
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296 xAddr.addr[ 5 ] = pucMACArray[5];
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297 uip_setethaddr( xAddr );
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299 /*-----------------------------------------------------------*/
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301 void vApplicationProcessFormInput( portCHAR *pcInputString, portBASE_TYPE xInputLength )
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304 static portCHAR cMessageForDisplay[ 32 ];
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305 extern xQueueHandle xOLEDQueue;
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306 xOLEDMessage xOLEDMessage;
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308 /* Process the form input sent by the IO page of the served HTML. */
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310 c = strstr( pcInputString, "?" );
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314 /* Turn LED's on or off in accordance with the check box status. */
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315 if( strstr( c, "LED0=1" ) != NULL )
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317 vParTestSetLED( 0, 1 );
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321 vParTestSetLED( 0, 0 );
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324 /* Find the start of the text to be displayed on the LCD. */
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325 pcText = strstr( c, "LCD=" );
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326 pcText += strlen( "LCD=" );
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328 /* Terminate the file name for further processing within uIP. */
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331 /* Terminate the LCD string. */
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332 c = strstr( pcText, " " );
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338 /* Add required spaces. */
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339 while( ( c = strstr( pcText, "+" ) ) != NULL )
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344 /* Write the message to the LCD. */
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345 strcpy( cMessageForDisplay, pcText );
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346 xOLEDMessage.pcMessage = ( signed portCHAR * ) cMessageForDisplay;
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347 xQueueSend( xOLEDQueue, &xOLEDMessage, portMAX_DELAY );
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