2 FreeRTOS V8.2.0rc1 - Copyright (C) 2014 Real Time Engineers Ltd.
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5 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 This file is part of the FreeRTOS distribution.
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9 FreeRTOS is free software; you can redistribute it and/or modify it under
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10 the terms of the GNU General Public License (version 2) as published by the
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11 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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13 >>! NOTE: The modification to the GPL is included to allow you to !<<
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14 >>! distribute a combined work that includes FreeRTOS without being !<<
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15 >>! obliged to provide the source code for proprietary components !<<
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16 >>! outside of the FreeRTOS kernel. !<<
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18 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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19 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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20 FOR A PARTICULAR PURPOSE. Full license text is available on the following
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21 link: http://www.freertos.org/a00114.html
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25 ***************************************************************************
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27 * Having a problem? Start by reading the FAQ "My application does *
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28 * not run, what could be wrong?". Have you defined configASSERT()? *
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30 * http://www.FreeRTOS.org/FAQHelp.html *
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32 ***************************************************************************
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34 ***************************************************************************
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36 * FreeRTOS provides completely free yet professionally developed, *
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37 * robust, strictly quality controlled, supported, and cross *
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38 * platform software that is more than just the market leader, it *
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39 * is the industry's de facto standard. *
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41 * Help yourself get started quickly while simultaneously helping *
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42 * to support the FreeRTOS project by purchasing a FreeRTOS *
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43 * tutorial book, reference manual, or both: *
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44 * http://www.FreeRTOS.org/Documentation *
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46 ***************************************************************************
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48 ***************************************************************************
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50 * Investing in training allows your team to be as productive as *
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51 * possible as early as possible, lowering your overall development *
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52 * cost, and enabling you to bring a more robust product to market *
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53 * earlier than would otherwise be possible. Richard Barry is both *
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54 * the architect and key author of FreeRTOS, and so also the world's *
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55 * leading authority on what is the world's most popular real time *
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56 * kernel for deeply embedded MCU designs. Obtaining your training *
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57 * from Richard ensures your team will gain directly from his in-depth *
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58 * product knowledge and years of usage experience. Contact Real Time *
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59 * Engineers Ltd to enquire about the FreeRTOS Masterclass, presented *
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60 * by Richard Barry: http://www.FreeRTOS.org/contact
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62 ***************************************************************************
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64 ***************************************************************************
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66 * You are receiving this top quality software for free. Please play *
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67 * fair and reciprocate by reporting any suspected issues and *
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68 * participating in the community forum: *
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69 * http://www.FreeRTOS.org/support *
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73 ***************************************************************************
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75 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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76 license and Real Time Engineers Ltd. contact details.
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78 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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79 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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80 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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82 http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
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83 Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
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85 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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86 Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
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87 licenses offer ticketed support, indemnification and commercial middleware.
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89 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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90 engineered and independently SIL3 certified version for use in safety and
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91 mission critical applications that require provable dependability.
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96 /* Standard includes. */
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99 /* Scheduler includes. */
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100 #include "FreeRTOS.h"
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102 #include "semphr.h"
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104 /* uip includes. */
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106 #include "uip_arp.h"
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109 #include "clock-arch.h"
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111 /* Demo includes. */
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112 #include "EthDev_LPC17xx.h"
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113 #include "EthDev.h"
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114 #include "ParTest.h"
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116 /*-----------------------------------------------------------*/
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118 /* How long to wait before attempting to connect the MAC again. */
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119 #define uipINIT_WAIT ( 100 / portTICK_PERIOD_MS )
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121 /* Shortcut to the header within the Rx buffer. */
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122 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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124 /* Standard constant. */
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125 #define uipTOTAL_FRAME_HEADER_SIZE 54
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127 /*-----------------------------------------------------------*/
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130 * Setup the MAC address in the MAC itself, and in the uIP stack.
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132 static void prvSetMACAddress( void );
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135 * Port functions required by the uIP stack.
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137 void clock_init( void );
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138 clock_time_t clock_time( void );
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140 /*-----------------------------------------------------------*/
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142 /* The semaphore used by the ISR to wake the uIP task. */
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143 SemaphoreHandle_t xEMACSemaphore = NULL;
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145 /*-----------------------------------------------------------*/
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147 void clock_init(void)
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149 /* This is done when the scheduler starts. */
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151 /*-----------------------------------------------------------*/
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153 clock_time_t clock_time( void )
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155 return xTaskGetTickCount();
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157 /*-----------------------------------------------------------*/
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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_Wrapper )( void );
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166 ( void ) pvParameters;
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168 /* Initialise the uIP stack. */
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169 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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170 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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172 uip_ipaddr( xIPAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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173 uip_sethostaddr( xIPAddr );
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174 uip_ipaddr( xIPAddr, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 );
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175 uip_setnetmask( xIPAddr );
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178 /* Create the semaphore used to wake the uIP task. */
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179 vSemaphoreCreateBinary( xEMACSemaphore );
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181 /* Initialise the MAC. */
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182 while( lEMACInit() != pdPASS )
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184 vTaskDelay( uipINIT_WAIT );
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187 portENTER_CRITICAL();
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189 EMAC->IntEnable = ( INT_RX_DONE | INT_TX_DONE );
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191 /* Set the interrupt priority to the max permissible to cause some
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192 interrupt nesting. */
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193 NVIC_SetPriority( ENET_IRQn, configEMAC_INTERRUPT_PRIORITY );
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195 /* Enable the interrupt. */
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196 NVIC_EnableIRQ( ENET_IRQn );
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197 prvSetMACAddress();
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199 portEXIT_CRITICAL();
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204 /* Is there received data ready to be processed? */
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205 uip_len = ulGetEMACRxData();
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207 if( ( uip_len > 0 ) && ( uip_buf != NULL ) )
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209 /* Standard uIP loop taken from the uIP manual. */
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210 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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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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224 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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228 /* If the above function invocation resulted in data that
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229 should be sent out on the network, the global variable
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230 uip_len is set to a value > 0. */
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233 vSendEMACTxData( uip_len );
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239 if( timer_expired( &periodic_timer ) && ( uip_buf != NULL ) )
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241 timer_reset( &periodic_timer );
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242 for( i = 0; i < UIP_CONNS; i++ )
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246 /* If the above function invocation resulted in data that
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247 should be sent out on the network, the global variable
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248 uip_len is set to a value > 0. */
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252 vSendEMACTxData( uip_len );
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256 /* Call the ARP timer function every 10 seconds. */
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257 if( timer_expired( &arp_timer ) )
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259 timer_reset( &arp_timer );
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265 /* We did not receive a packet, and there was no periodic
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266 processing to perform. Block for a fixed period. If a packet
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267 is received during this period we will be woken by the ISR
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268 giving us the Semaphore. */
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269 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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274 /*-----------------------------------------------------------*/
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276 static void prvSetMACAddress( void )
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278 struct uip_eth_addr xAddr;
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280 /* Configure the MAC address in the uIP stack. */
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281 xAddr.addr[ 0 ] = configMAC_ADDR0;
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282 xAddr.addr[ 1 ] = configMAC_ADDR1;
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283 xAddr.addr[ 2 ] = configMAC_ADDR2;
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284 xAddr.addr[ 3 ] = configMAC_ADDR3;
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285 xAddr.addr[ 4 ] = configMAC_ADDR4;
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286 xAddr.addr[ 5 ] = configMAC_ADDR5;
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287 uip_setethaddr( xAddr );
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289 /*-----------------------------------------------------------*/
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291 void vApplicationProcessFormInput( char *pcInputString )
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294 extern void vParTestSetLEDState( long lState );
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296 /* Process the form input sent by the IO page of the served HTML. */
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298 c = strstr( pcInputString, "?" );
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301 /* Turn the FIO1 LED's on or off in accordance with the check box status. */
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302 if( strstr( c, "LED0=1" ) != NULL )
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304 vParTestSetLEDState( pdTRUE );
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308 vParTestSetLEDState( pdFALSE );
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