2 FreeRTOS V7.3.0 - Copyright (C) 2012 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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32 >>>NOTE<<< The modification to the GPL is included to allow you to
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33 distribute a combined work that includes FreeRTOS without being obliged to
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34 provide the source code for proprietary components outside of the FreeRTOS
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35 kernel. FreeRTOS is distributed in the hope that it will be useful, but
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36 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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37 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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38 more details. You should have received a copy of the GNU General Public
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39 License and the FreeRTOS license exception along with FreeRTOS; if not it
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40 can be viewed here: http://www.freertos.org/a00114.html and also obtained
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41 by writing to Richard Barry, contact details for whom are available on the
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46 ***************************************************************************
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48 * Having a problem? Start by reading the FAQ "My application does *
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49 * not run, what could be wrong?" *
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51 * http://www.FreeRTOS.org/FAQHelp.html *
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53 ***************************************************************************
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56 http://www.FreeRTOS.org - Documentation, training, latest versions, license
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57 and contact details.
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59 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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60 including FreeRTOS+Trace - an indispensable productivity tool.
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62 Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
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63 the code with commercial support, indemnification, and middleware, under
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64 the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
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65 provide a safety engineered and independently SIL3 certified version under
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66 the SafeRTOS brand: http://www.SafeRTOS.com.
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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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79 #include "uip_arp.h"
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82 #include "clock-arch.h"
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84 /* Demo includes. */
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85 #include "EthDev_LPC17xx.h"
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87 #include "ParTest.h"
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89 /*-----------------------------------------------------------*/
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91 /* How long to wait before attempting to connect the MAC again. */
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92 #define uipINIT_WAIT ( 100 / portTICK_RATE_MS )
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94 /* Shortcut to the header within the Rx buffer. */
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95 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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97 /* Standard constant. */
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98 #define uipTOTAL_FRAME_HEADER_SIZE 54
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100 /*-----------------------------------------------------------*/
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103 * Setup the MAC address in the MAC itself, and in the uIP stack.
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105 static void prvSetMACAddress( void );
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108 * Port functions required by the uIP stack.
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110 void clock_init( void );
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111 clock_time_t clock_time( void );
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113 /*-----------------------------------------------------------*/
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115 /* The semaphore used by the ISR to wake the uIP task. */
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116 xSemaphoreHandle xEMACSemaphore = NULL;
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118 /*-----------------------------------------------------------*/
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120 void clock_init(void)
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122 /* This is done when the scheduler starts. */
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124 /*-----------------------------------------------------------*/
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126 clock_time_t clock_time( void )
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128 return xTaskGetTickCount();
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130 /*-----------------------------------------------------------*/
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132 void vuIP_Task( void *pvParameters )
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135 uip_ipaddr_t xIPAddr;
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136 struct timer periodic_timer, arp_timer;
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137 extern void ( vEMAC_ISR_Wrapper )( void );
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139 ( void ) pvParameters;
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141 /* Initialise the uIP stack. */
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142 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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143 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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145 uip_ipaddr( xIPAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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146 uip_sethostaddr( xIPAddr );
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147 uip_ipaddr( xIPAddr, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 );
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148 uip_setnetmask( xIPAddr );
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151 /* Create the semaphore used to wake the uIP task. */
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152 vSemaphoreCreateBinary( xEMACSemaphore );
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154 /* Initialise the MAC. */
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155 while( lEMACInit() != pdPASS )
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157 vTaskDelay( uipINIT_WAIT );
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160 portENTER_CRITICAL();
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162 EMAC->IntEnable = ( INT_RX_DONE | INT_TX_DONE );
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164 /* Set the interrupt priority to the max permissible to cause some
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165 interrupt nesting. */
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166 NVIC_SetPriority( ENET_IRQn, configEMAC_INTERRUPT_PRIORITY );
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168 /* Enable the interrupt. */
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169 NVIC_EnableIRQ( ENET_IRQn );
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170 prvSetMACAddress();
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172 portEXIT_CRITICAL();
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177 /* Is there received data ready to be processed? */
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178 uip_len = ulGetEMACRxData();
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180 if( ( uip_len > 0 ) && ( uip_buf != NULL ) )
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182 /* Standard uIP loop taken from the uIP manual. */
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183 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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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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194 vSendEMACTxData( uip_len );
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197 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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201 /* If the above function invocation resulted in data that
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202 should be sent out on the network, the global variable
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203 uip_len is set to a value > 0. */
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206 vSendEMACTxData( uip_len );
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212 if( timer_expired( &periodic_timer ) && ( uip_buf != NULL ) )
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214 timer_reset( &periodic_timer );
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215 for( i = 0; i < UIP_CONNS; i++ )
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219 /* If the above function invocation resulted in data that
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220 should be sent out on the network, the global variable
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221 uip_len is set to a value > 0. */
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225 vSendEMACTxData( uip_len );
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229 /* Call the ARP timer function every 10 seconds. */
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230 if( timer_expired( &arp_timer ) )
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232 timer_reset( &arp_timer );
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238 /* We did not receive a packet, and there was no periodic
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239 processing to perform. Block for a fixed period. If a packet
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240 is received during this period we will be woken by the ISR
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241 giving us the Semaphore. */
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242 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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247 /*-----------------------------------------------------------*/
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249 static void prvSetMACAddress( void )
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251 struct uip_eth_addr xAddr;
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253 /* Configure the MAC address in the uIP stack. */
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254 xAddr.addr[ 0 ] = configMAC_ADDR0;
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255 xAddr.addr[ 1 ] = configMAC_ADDR1;
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256 xAddr.addr[ 2 ] = configMAC_ADDR2;
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257 xAddr.addr[ 3 ] = configMAC_ADDR3;
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258 xAddr.addr[ 4 ] = configMAC_ADDR4;
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259 xAddr.addr[ 5 ] = configMAC_ADDR5;
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260 uip_setethaddr( xAddr );
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262 /*-----------------------------------------------------------*/
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264 void vApplicationProcessFormInput( char *pcInputString )
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267 extern void vParTestSetLEDState( long lState );
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269 /* Process the form input sent by the IO page of the served HTML. */
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271 c = strstr( pcInputString, "?" );
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274 /* Turn the FIO1 LED's on or off in accordance with the check box status. */
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275 if( strstr( c, "LED0=1" ) != NULL )
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277 vParTestSetLEDState( pdTRUE );
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281 vParTestSetLEDState( pdFALSE );
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