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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75 /* Standard includes. */
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78 /* Scheduler includes. */
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79 #include "FreeRTOS.h"
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85 #include "uip_arp.h"
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88 #include "clock-arch.h"
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90 /* Demo includes. */
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91 #include "EthDev_LPC17xx.h"
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93 #include "ParTest.h"
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95 /*-----------------------------------------------------------*/
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97 /* How long to wait before attempting to connect the MAC again. */
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98 #define uipINIT_WAIT ( 100 / portTICK_RATE_MS )
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100 /* Shortcut to the header within the Rx buffer. */
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101 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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103 /* Standard constant. */
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104 #define uipTOTAL_FRAME_HEADER_SIZE 54
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106 /*-----------------------------------------------------------*/
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109 * Setup the MAC address in the MAC itself, and in the uIP stack.
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111 static void prvSetMACAddress( void );
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114 * Port functions required by the uIP stack.
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116 void clock_init( void );
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117 clock_time_t clock_time( void );
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119 /*-----------------------------------------------------------*/
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121 /* The semaphore used by the ISR to wake the uIP task. */
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122 xSemaphoreHandle xEMACSemaphore = NULL;
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124 /*-----------------------------------------------------------*/
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126 void clock_init(void)
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128 /* This is done when the scheduler starts. */
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130 /*-----------------------------------------------------------*/
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132 clock_time_t clock_time( void )
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134 return xTaskGetTickCount();
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136 /*-----------------------------------------------------------*/
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138 void vuIP_Task( void *pvParameters )
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141 uip_ipaddr_t xIPAddr;
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142 struct timer periodic_timer, arp_timer;
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143 extern void ( vEMAC_ISR_Wrapper )( void );
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145 ( void ) pvParameters;
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147 /* Initialise the uIP stack. */
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148 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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149 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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151 uip_ipaddr( xIPAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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152 uip_sethostaddr( xIPAddr );
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153 uip_ipaddr( xIPAddr, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 );
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154 uip_setnetmask( xIPAddr );
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157 /* Create the semaphore used to wake the uIP task. */
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158 vSemaphoreCreateBinary( xEMACSemaphore );
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160 /* Initialise the MAC. */
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161 while( lEMACInit() != pdPASS )
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163 vTaskDelay( uipINIT_WAIT );
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166 portENTER_CRITICAL();
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168 EMAC->IntEnable = ( INT_RX_DONE | INT_TX_DONE );
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170 /* Set the interrupt priority to the max permissible to cause some
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171 interrupt nesting. */
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172 NVIC_SetPriority( ENET_IRQn, configEMAC_INTERRUPT_PRIORITY );
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174 /* Enable the interrupt. */
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175 NVIC_EnableIRQ( ENET_IRQn );
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176 prvSetMACAddress();
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178 portEXIT_CRITICAL();
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183 /* Is there received data ready to be processed? */
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184 uip_len = ulGetEMACRxData();
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186 if( ( uip_len > 0 ) && ( uip_buf != NULL ) )
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188 /* Standard uIP loop taken from the uIP manual. */
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189 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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194 /* If the above function invocation resulted in data that
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195 should be sent out on the network, the global variable
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196 uip_len is set to a value > 0. */
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200 vSendEMACTxData( uip_len );
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203 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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207 /* If the above function invocation resulted in data that
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208 should be sent out on the network, the global variable
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209 uip_len is set to a value > 0. */
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212 vSendEMACTxData( uip_len );
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218 if( timer_expired( &periodic_timer ) && ( uip_buf != NULL ) )
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220 timer_reset( &periodic_timer );
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221 for( i = 0; i < UIP_CONNS; i++ )
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225 /* If the above function invocation resulted in data that
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226 should be sent out on the network, the global variable
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227 uip_len is set to a value > 0. */
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231 vSendEMACTxData( uip_len );
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235 /* Call the ARP timer function every 10 seconds. */
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236 if( timer_expired( &arp_timer ) )
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238 timer_reset( &arp_timer );
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244 /* We did not receive a packet, and there was no periodic
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245 processing to perform. Block for a fixed period. If a packet
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246 is received during this period we will be woken by the ISR
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247 giving us the Semaphore. */
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248 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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253 /*-----------------------------------------------------------*/
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255 static void prvSetMACAddress( void )
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257 struct uip_eth_addr xAddr;
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259 /* Configure the MAC address in the uIP stack. */
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260 xAddr.addr[ 0 ] = configMAC_ADDR0;
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261 xAddr.addr[ 1 ] = configMAC_ADDR1;
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262 xAddr.addr[ 2 ] = configMAC_ADDR2;
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263 xAddr.addr[ 3 ] = configMAC_ADDR3;
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264 xAddr.addr[ 4 ] = configMAC_ADDR4;
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265 xAddr.addr[ 5 ] = configMAC_ADDR5;
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266 uip_setethaddr( xAddr );
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268 /*-----------------------------------------------------------*/
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270 void vApplicationProcessFormInput( char *pcInputString )
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273 extern void vParTestSetLEDState( long lState );
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275 /* Process the form input sent by the IO page of the served HTML. */
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277 c = strstr( pcInputString, "?" );
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280 /* Turn the FIO1 LED's on or off in accordance with the check box status. */
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281 if( strstr( c, "LED0=1" ) != NULL )
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283 vParTestSetLEDState( pdTRUE );
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287 vParTestSetLEDState( pdFALSE );
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