2 FreeRTOS V9.0.0rc1 - Copyright (C) 2016 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 ***************************************************************************
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14 >>! NOTE: The modification to the GPL is included to allow you to !<<
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15 >>! distribute a combined work that includes FreeRTOS without being !<<
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16 >>! obliged to provide the source code for proprietary components !<<
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17 >>! outside of the FreeRTOS kernel. !<<
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18 ***************************************************************************
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20 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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21 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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22 FOR A PARTICULAR PURPOSE. Full license text is available on the following
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23 link: http://www.freertos.org/a00114.html
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25 ***************************************************************************
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27 * FreeRTOS provides completely free yet professionally developed, *
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28 * robust, strictly quality controlled, supported, and cross *
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29 * platform software that is more than just the market leader, it *
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30 * is the industry's de facto standard. *
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32 * Help yourself get started quickly while simultaneously helping *
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33 * to support the FreeRTOS project by purchasing a FreeRTOS *
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34 * tutorial book, reference manual, or both: *
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35 * http://www.FreeRTOS.org/Documentation *
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37 ***************************************************************************
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39 http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
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40 the FAQ page "My application does not run, what could be wrong?". Have you
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41 defined configASSERT()?
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43 http://www.FreeRTOS.org/support - In return for receiving this top quality
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44 embedded software for free we request you assist our global community by
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45 participating in the support forum.
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47 http://www.FreeRTOS.org/training - Investing in training allows your team to
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48 be as productive as possible as early as possible. Now you can receive
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49 FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
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50 Ltd, and the world's leading authority on the world's leading RTOS.
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52 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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53 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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54 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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56 http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
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57 Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
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59 http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
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60 Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
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61 licenses offer ticketed support, indemnification and commercial middleware.
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63 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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64 engineered and independently SIL3 certified version for use in safety and
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65 mission critical applications that require provable dependability.
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70 /* Standard includes. */
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73 /* Scheduler includes. */
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74 #include "FreeRTOS.h"
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80 #include "uip_arp.h"
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83 #include "clock-arch.h"
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85 /* Demo includes. */
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86 #include "EthDev_LPC17xx.h"
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88 #include "ParTest.h"
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90 /*-----------------------------------------------------------*/
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92 /* How long to wait before attempting to connect the MAC again. */
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93 #define uipINIT_WAIT ( 100 / portTICK_PERIOD_MS )
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95 /* Shortcut to the header within the Rx buffer. */
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96 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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98 /* Standard constant. */
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99 #define uipTOTAL_FRAME_HEADER_SIZE 54
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101 /*-----------------------------------------------------------*/
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104 * Setup the MAC address in the MAC itself, and in the uIP stack.
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106 static void prvSetMACAddress( void );
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109 * Port functions required by the uIP stack.
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111 void clock_init( void );
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112 clock_time_t clock_time( void );
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114 /*-----------------------------------------------------------*/
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116 /* The semaphore used by the ISR to wake the uIP task. */
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117 SemaphoreHandle_t xEMACSemaphore = NULL;
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119 /*-----------------------------------------------------------*/
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121 void clock_init(void)
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123 /* This is done when the scheduler starts. */
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125 /*-----------------------------------------------------------*/
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127 clock_time_t clock_time( void )
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129 return xTaskGetTickCount();
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131 /*-----------------------------------------------------------*/
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133 void vuIP_Task( void *pvParameters )
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136 uip_ipaddr_t xIPAddr;
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137 struct timer periodic_timer, arp_timer;
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138 extern void ( vEMAC_ISR_Wrapper )( void );
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140 ( void ) pvParameters;
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142 /* Initialise the uIP stack. */
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143 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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144 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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146 uip_ipaddr( xIPAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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147 uip_sethostaddr( xIPAddr );
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148 uip_ipaddr( xIPAddr, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 );
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149 uip_setnetmask( xIPAddr );
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152 /* Create the semaphore used to wake the uIP task. */
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153 vSemaphoreCreateBinary( xEMACSemaphore );
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155 /* Initialise the MAC. */
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156 while( lEMACInit() != pdPASS )
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158 vTaskDelay( uipINIT_WAIT );
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161 portENTER_CRITICAL();
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163 LPC_EMAC->IntEnable = ( INT_RX_DONE | INT_TX_DONE );
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165 /* Set the interrupt priority to the max permissible to cause some
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166 interrupt nesting. */
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167 NVIC_SetPriority( ENET_IRQn, configEMAC_INTERRUPT_PRIORITY );
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169 /* Enable the interrupt. */
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170 NVIC_EnableIRQ( ENET_IRQn );
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171 prvSetMACAddress();
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173 portEXIT_CRITICAL();
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178 /* Is there received data ready to be processed? */
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179 uip_len = ulGetEMACRxData();
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181 if( ( uip_len > 0 ) && ( uip_buf != NULL ) )
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183 /* Standard uIP loop taken from the uIP manual. */
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184 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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189 /* If the above function invocation resulted in data that
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190 should be sent out on the network, the global variable
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191 uip_len is set to a value > 0. */
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195 vSendEMACTxData( uip_len );
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198 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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202 /* If the above function invocation resulted in data that
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203 should be sent out on the network, the global variable
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204 uip_len is set to a value > 0. */
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207 vSendEMACTxData( uip_len );
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213 if( timer_expired( &periodic_timer ) && ( uip_buf != NULL ) )
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215 timer_reset( &periodic_timer );
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216 for( i = 0; i < UIP_CONNS; i++ )
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220 /* If the above function invocation resulted in data that
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221 should be sent out on the network, the global variable
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222 uip_len is set to a value > 0. */
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226 vSendEMACTxData( uip_len );
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230 /* Call the ARP timer function every 10 seconds. */
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231 if( timer_expired( &arp_timer ) )
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233 timer_reset( &arp_timer );
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239 /* We did not receive a packet, and there was no periodic
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240 processing to perform. Block for a fixed period. If a packet
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241 is received during this period we will be woken by the ISR
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242 giving us the Semaphore. */
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243 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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248 /*-----------------------------------------------------------*/
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250 static void prvSetMACAddress( void )
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252 struct uip_eth_addr xAddr;
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254 /* Configure the MAC address in the uIP stack. */
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255 xAddr.addr[ 0 ] = configMAC_ADDR0;
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256 xAddr.addr[ 1 ] = configMAC_ADDR1;
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257 xAddr.addr[ 2 ] = configMAC_ADDR2;
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258 xAddr.addr[ 3 ] = configMAC_ADDR3;
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259 xAddr.addr[ 4 ] = configMAC_ADDR4;
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260 xAddr.addr[ 5 ] = configMAC_ADDR5;
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261 uip_setethaddr( xAddr );
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263 /*-----------------------------------------------------------*/
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265 void vApplicationProcessFormInput( char *pcInputString )
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268 const unsigned long ulLEDNo = 3;
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270 /* Process the form input sent by the IO page of the served HTML. */
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272 c = strstr( pcInputString, "?" );
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275 /* Turn LED's on or off in accordance with the check box status. */
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276 if( strstr( c, "LED0=1" ) != NULL )
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279 vParTestSetLED( ulLEDNo, pdFALSE );
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284 vParTestSetLED( ulLEDNo, pdTRUE );
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