2 FreeRTOS V7.5.1 - Copyright (C) 2013 Real Time Engineers Ltd.
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4 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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6 ***************************************************************************
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8 * FreeRTOS provides completely free yet professionally developed, *
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9 * robust, strictly quality controlled, supported, and cross *
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10 * platform software that has become a de facto standard. *
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12 * Help yourself get started quickly and support the FreeRTOS *
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13 * project by purchasing a FreeRTOS tutorial book, reference *
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14 * manual, or both from: http://www.FreeRTOS.org/Documentation *
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18 ***************************************************************************
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20 This file is part of the FreeRTOS distribution.
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22 FreeRTOS is free software; you can redistribute it and/or modify it under
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23 the terms of the GNU General Public License (version 2) as published by the
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24 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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26 >>! NOTE: The modification to the GPL is included to allow you to distribute
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27 >>! a combined work that includes FreeRTOS without being obliged to provide
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28 >>! the source code for proprietary components outside of the FreeRTOS
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31 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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32 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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33 FOR A PARTICULAR PURPOSE. Full license text is available from the following
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34 link: http://www.freertos.org/a00114.html
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38 ***************************************************************************
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40 * Having a problem? Start by reading the FAQ "My application does *
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41 * not run, what could be wrong?" *
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43 * http://www.FreeRTOS.org/FAQHelp.html *
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45 ***************************************************************************
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47 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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48 license and Real Time Engineers Ltd. contact details.
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50 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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51 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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52 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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54 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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55 Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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56 licenses offer ticketed support, indemnification and middleware.
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58 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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59 engineered and independently SIL3 certified version for use in safety and
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60 mission critical applications that require provable dependability.
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65 /* Standard includes. */
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68 /* Scheduler includes. */
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69 #include "FreeRTOS.h"
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75 #include "uip_arp.h"
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78 #include "clock-arch.h"
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80 /* Demo includes. */
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81 #include "EthDev_LPC17xx.h"
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83 #include "ParTest.h"
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85 /*-----------------------------------------------------------*/
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87 /* How long to wait before attempting to connect the MAC again. */
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88 #define uipINIT_WAIT ( 100 / portTICK_RATE_MS )
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90 /* Shortcut to the header within the Rx buffer. */
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91 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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93 /* Standard constant. */
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94 #define uipTOTAL_FRAME_HEADER_SIZE 54
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96 /*-----------------------------------------------------------*/
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99 * Setup the MAC address in the MAC itself, and in the uIP stack.
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101 static void prvSetMACAddress( void );
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104 * Port functions required by the uIP stack.
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106 void clock_init( void );
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107 clock_time_t clock_time( void );
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109 /*-----------------------------------------------------------*/
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111 /* The semaphore used by the ISR to wake the uIP task. */
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112 xSemaphoreHandle xEMACSemaphore = NULL;
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114 /*-----------------------------------------------------------*/
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116 void clock_init(void)
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118 /* This is done when the scheduler starts. */
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120 /*-----------------------------------------------------------*/
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122 clock_time_t clock_time( void )
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124 return xTaskGetTickCount();
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126 /*-----------------------------------------------------------*/
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128 void vuIP_Task( void *pvParameters )
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131 uip_ipaddr_t xIPAddr;
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132 struct timer periodic_timer, arp_timer;
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133 extern void ( vEMAC_ISR_Wrapper )( void );
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135 ( void ) pvParameters;
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137 /* Initialise the uIP stack. */
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138 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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139 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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141 uip_ipaddr( xIPAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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142 uip_sethostaddr( xIPAddr );
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143 uip_ipaddr( xIPAddr, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 );
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144 uip_setnetmask( xIPAddr );
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147 /* Create the semaphore used to wake the uIP task. */
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148 vSemaphoreCreateBinary( xEMACSemaphore );
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150 /* Initialise the MAC. */
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151 while( lEMACInit() != pdPASS )
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153 vTaskDelay( uipINIT_WAIT );
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156 portENTER_CRITICAL();
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158 EMAC->IntEnable = ( INT_RX_DONE | INT_TX_DONE );
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160 /* Set the interrupt priority to the max permissible to cause some
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161 interrupt nesting. */
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162 NVIC_SetPriority( ENET_IRQn, configEMAC_INTERRUPT_PRIORITY );
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164 /* Enable the interrupt. */
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165 NVIC_EnableIRQ( ENET_IRQn );
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166 prvSetMACAddress();
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168 portEXIT_CRITICAL();
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173 /* Is there received data ready to be processed? */
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174 uip_len = ulGetEMACRxData();
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176 if( ( uip_len > 0 ) && ( uip_buf != NULL ) )
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178 /* Standard uIP loop taken from the uIP manual. */
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179 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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184 /* If the above function invocation resulted in data that
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185 should be sent out on the network, the global variable
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186 uip_len is set to a value > 0. */
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190 vSendEMACTxData( uip_len );
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193 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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197 /* If the above function invocation resulted in data that
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198 should be sent out on the network, the global variable
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199 uip_len is set to a value > 0. */
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202 vSendEMACTxData( uip_len );
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208 if( timer_expired( &periodic_timer ) && ( uip_buf != NULL ) )
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210 timer_reset( &periodic_timer );
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211 for( i = 0; i < UIP_CONNS; i++ )
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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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221 vSendEMACTxData( uip_len );
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225 /* Call the ARP timer function every 10 seconds. */
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226 if( timer_expired( &arp_timer ) )
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228 timer_reset( &arp_timer );
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234 /* We did not receive a packet, and there was no periodic
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235 processing to perform. Block for a fixed period. If a packet
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236 is received during this period we will be woken by the ISR
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237 giving us the Semaphore. */
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238 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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243 /*-----------------------------------------------------------*/
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245 static void prvSetMACAddress( void )
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247 struct uip_eth_addr xAddr;
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249 /* Configure the MAC address in the uIP stack. */
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250 xAddr.addr[ 0 ] = configMAC_ADDR0;
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251 xAddr.addr[ 1 ] = configMAC_ADDR1;
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252 xAddr.addr[ 2 ] = configMAC_ADDR2;
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253 xAddr.addr[ 3 ] = configMAC_ADDR3;
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254 xAddr.addr[ 4 ] = configMAC_ADDR4;
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255 xAddr.addr[ 5 ] = configMAC_ADDR5;
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256 uip_setethaddr( xAddr );
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258 /*-----------------------------------------------------------*/
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260 void vApplicationProcessFormInput( char *pcInputString )
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263 extern void vParTestSetLEDState( long lState );
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265 /* Process the form input sent by the IO page of the served HTML. */
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267 c = strstr( pcInputString, "?" );
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270 /* Turn the FIO1 LED's on or off in accordance with the check box status. */
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271 if( strstr( c, "LED0=1" ) != NULL )
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273 vParTestSetLEDState( pdTRUE );
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277 vParTestSetLEDState( pdFALSE );
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