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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74 #include "lcd_message.h"
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77 #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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94 /*-----------------------------------------------------------*/
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96 /* IP address configuration. */
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97 #define uipIP_ADDR0 172
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98 #define uipIP_ADDR1 25
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99 #define uipIP_ADDR2 218
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100 #define uipIP_ADDR3 19
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102 /* How long to wait before attempting to connect the MAC again. */
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103 #define uipINIT_WAIT 100
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105 /* Shortcut to the header within the Rx buffer. */
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106 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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108 /* Standard constant. */
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109 #define uipTOTAL_FRAME_HEADER_SIZE 54
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111 /*-----------------------------------------------------------*/
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114 * Send the uIP buffer to the MAC.
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116 static void prvENET_Send(void);
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119 * Setup the MAC address in the MAC itself, and in the uIP stack.
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121 static void prvSetMACAddress( void );
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124 * Port functions required by the uIP stack.
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126 void clock_init( void );
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127 clock_time_t clock_time( void );
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129 /*-----------------------------------------------------------*/
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131 /* The semaphore used by the ISR to wake the uIP task. */
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132 extern xSemaphoreHandle xEMACSemaphore;
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134 /*-----------------------------------------------------------*/
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136 void clock_init(void)
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138 /* This is done when the scheduler starts. */
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140 /*-----------------------------------------------------------*/
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142 clock_time_t clock_time( void )
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144 return xTaskGetTickCount();
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148 void vuIP_Task( void *pvParameters )
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151 uip_ipaddr_t xIPAddr;
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152 struct timer periodic_timer, arp_timer;
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153 extern void ( vEMAC_ISR )( void );
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155 /* Enable/Reset the Ethernet Controller */
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156 SysCtlPeripheralEnable( SYSCTL_PERIPH_ETH );
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157 SysCtlPeripheralReset( SYSCTL_PERIPH_ETH );
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159 /* Create the semaphore used by the ISR to wake this task. */
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160 vSemaphoreCreateBinary( xEMACSemaphore );
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162 /* Initialise the uIP stack. */
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163 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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164 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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166 uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
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167 uip_sethostaddr( xIPAddr );
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170 while( vInitEMAC() != pdPASS )
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172 vTaskDelay( uipINIT_WAIT );
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174 prvSetMACAddress();
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179 /* Is there received data ready to be processed? */
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180 uip_len = uiGetEMACRxData( uip_buf );
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184 /* Standard uIP loop taken from the uIP manual. */
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186 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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191 /* If the above function invocation resulted in data that
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192 should be sent out on the network, the global variable
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193 uip_len is set to a value > 0. */
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200 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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204 /* If the above function invocation resulted in data that
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205 should be sent out on the network, the global variable
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206 uip_len is set to a value > 0. */
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215 if( timer_expired( &periodic_timer ) )
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217 timer_reset( &periodic_timer );
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218 for( i = 0; i < UIP_CONNS; i++ )
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222 /* If the above function invocation resulted in data that
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223 should be sent out on the network, the global variable
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224 uip_len is set to a value > 0. */
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232 /* Call the ARP timer function every 10 seconds. */
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233 if( timer_expired( &arp_timer ) )
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235 timer_reset( &arp_timer );
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241 /* We did not receive a packet, and there was no periodic
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242 processing to perform. Block for a fixed period. If a packet
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243 is received during this period we will be woken by the ISR
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244 giving us the Semaphore. */
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245 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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250 /*-----------------------------------------------------------*/
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252 static void prvENET_Send(void)
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255 vIncrementTxLength( uip_len );
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256 vSendBufferToMAC();
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258 /*-----------------------------------------------------------*/
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260 static void prvSetMACAddress( void )
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262 unsigned portLONG ulUser0, ulUser1;
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263 unsigned char pucMACArray[8];
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264 struct uip_eth_addr xAddr;
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266 /* Get the device MAC address from flash */
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267 FlashUserGet(&ulUser0, &ulUser1);
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269 /* Convert the MAC address from flash into sequence of bytes. */
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270 pucMACArray[0] = ((ulUser0 >> 0) & 0xff);
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271 pucMACArray[1] = ((ulUser0 >> 8) & 0xff);
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272 pucMACArray[2] = ((ulUser0 >> 16) & 0xff);
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273 pucMACArray[3] = ((ulUser1 >> 0) & 0xff);
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274 pucMACArray[4] = ((ulUser1 >> 8) & 0xff);
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275 pucMACArray[5] = ((ulUser1 >> 16) & 0xff);
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277 /* Program the MAC address. */
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278 EthernetMACAddrSet(ETH_BASE, pucMACArray);
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280 xAddr.addr[ 0 ] = pucMACArray[0];
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281 xAddr.addr[ 1 ] = pucMACArray[1];
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282 xAddr.addr[ 2 ] = pucMACArray[2];
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283 xAddr.addr[ 3 ] = pucMACArray[3];
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284 xAddr.addr[ 4 ] = pucMACArray[4];
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285 xAddr.addr[ 5 ] = pucMACArray[5];
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286 uip_setethaddr( xAddr );
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288 /*-----------------------------------------------------------*/
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290 void vApplicationProcessFormInput( portCHAR *pcInputString, portBASE_TYPE xInputLength )
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293 static portCHAR cMessageForDisplay[ 32 ];
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294 extern xQueueHandle xOLEDQueue;
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295 xOLEDMessage xOLEDMessage;
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297 /* Process the form input sent by the IO page of the served HTML. */
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299 c = strstr( pcInputString, "?" );
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303 /* Turn LED's on or off in accordance with the check box status. */
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304 if( strstr( c, "LED0=1" ) != NULL )
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306 vParTestSetLED( 0, 1 );
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310 vParTestSetLED( 0, 0 );
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313 /* Find the start of the text to be displayed on the LCD. */
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314 pcText = strstr( c, "LCD=" );
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315 pcText += strlen( "LCD=" );
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317 /* Terminate the file name for further processing within uIP. */
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320 /* Terminate the LCD string. */
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321 c = strstr( pcText, " " );
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327 /* Add required spaces. */
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328 while( ( c = strstr( pcText, "+" ) ) != NULL )
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333 /* Write the message to the LCD. */
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334 strcpy( cMessageForDisplay, pcText );
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335 xOLEDMessage.pcMessage = cMessageForDisplay;
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336 xQueueSend( xOLEDQueue, &xOLEDMessage, portMAX_DELAY );
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