2 FreeRTOS V6.0.0 - Copyright (C) 2009 Real Time Engineers Ltd.
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4 ***************************************************************************
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8 * + New to FreeRTOS, *
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9 * + Wanting to learn FreeRTOS or multitasking in general quickly *
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10 * + Looking for basic training, *
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11 * + Wanting to improve your FreeRTOS skills and productivity *
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13 * then take a look at the FreeRTOS eBook *
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15 * "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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16 * http://www.FreeRTOS.org/Documentation *
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18 * A pdf reference manual is also available. Both are usually delivered *
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19 * to your inbox within 20 minutes to two hours when purchased between 8am *
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20 * and 8pm GMT (although please allow up to 24 hours in case of *
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21 * exceptional circumstances). Thank you for your support! *
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23 ***************************************************************************
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25 This file is part of the FreeRTOS distribution.
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27 FreeRTOS is free software; you can redistribute it and/or modify it under
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28 the terms of the GNU General Public License (version 2) as published by the
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29 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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30 ***NOTE*** The exception to the GPL is included to allow you to distribute
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31 a combined work that includes FreeRTOS without being obliged to provide the
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32 source code for proprietary components outside of the FreeRTOS kernel.
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33 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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34 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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35 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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36 more details. You should have received a copy of the GNU General Public
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37 License and the FreeRTOS license exception along with FreeRTOS; if not it
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38 can be viewed here: http://www.freertos.org/a00114.html and also obtained
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39 by writing to Richard Barry, contact details for whom are available on the
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44 http://www.FreeRTOS.org - Documentation, latest information, license and
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47 http://www.SafeRTOS.com - A version that is certified for use in safety
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50 http://www.OpenRTOS.com - Commercial support, development, porting,
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51 licensing and training services.
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54 /* Standard includes. */
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57 /* Scheduler includes. */
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58 #include "FreeRTOS.h"
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64 #include "uip_arp.h"
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67 #include "clock-arch.h"
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69 /* Demo includes. */
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70 #include "EthDev_LPC17xx.h"
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72 #include "ParTest.h"
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74 /*-----------------------------------------------------------*/
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76 /* How long to wait before attempting to connect the MAC again. */
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77 #define uipINIT_WAIT ( 100 / portTICK_RATE_MS )
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79 /* Shortcut to the header within the Rx buffer. */
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80 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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82 /* Standard constant. */
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83 #define uipTOTAL_FRAME_HEADER_SIZE 54
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85 /*-----------------------------------------------------------*/
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88 * Setup the MAC address in the MAC itself, and in the uIP stack.
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90 static void prvSetMACAddress( void );
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93 * Port functions required by the uIP stack.
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95 void clock_init( void );
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96 clock_time_t clock_time( void );
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98 /*-----------------------------------------------------------*/
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100 /* The semaphore used by the ISR to wake the uIP task. */
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101 xSemaphoreHandle xEMACSemaphore = NULL;
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103 /*-----------------------------------------------------------*/
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105 void clock_init(void)
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107 /* This is done when the scheduler starts. */
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109 /*-----------------------------------------------------------*/
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111 clock_time_t clock_time( void )
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113 return xTaskGetTickCount();
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115 /*-----------------------------------------------------------*/
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117 void vuIP_Task( void *pvParameters )
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120 uip_ipaddr_t xIPAddr;
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121 struct timer periodic_timer, arp_timer;
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122 extern void ( vEMAC_ISR_Wrapper )( void );
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124 ( void ) pvParameters;
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126 /* Initialise the uIP stack. */
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127 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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128 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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130 uip_ipaddr( xIPAddr, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 );
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131 uip_sethostaddr( xIPAddr );
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132 uip_ipaddr( xIPAddr, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 );
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133 uip_setnetmask( xIPAddr );
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136 /* Create the semaphore used to wake the uIP task. */
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137 vSemaphoreCreateBinary( xEMACSemaphore );
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139 /* Initialise the MAC. */
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140 while( lEMACInit() != pdPASS )
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142 vTaskDelay( uipINIT_WAIT );
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145 portENTER_CRITICAL();
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147 EMAC->IntEnable = ( INT_RX_DONE | INT_TX_DONE );
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149 /* Set the interrupt priority to the max permissible to cause some
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150 interrupt nesting. */
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151 NVIC_SetPriority( ENET_IRQn, configEMAC_INTERRUPT_PRIORITY );
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153 /* Enable the interrupt. */
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154 NVIC_EnableIRQ( ENET_IRQn );
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155 prvSetMACAddress();
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157 portEXIT_CRITICAL();
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162 /* Is there received data ready to be processed? */
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163 uip_len = ulGetEMACRxData();
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165 if( ( uip_len > 0 ) && ( uip_buf != NULL ) )
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167 /* Standard uIP loop taken from the uIP manual. */
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168 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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173 /* If the above function invocation resulted in data that
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174 should be sent out on the network, the global variable
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175 uip_len is set to a value > 0. */
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179 vSendEMACTxData( uip_len );
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182 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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186 /* If the above function invocation resulted in data that
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187 should be sent out on the network, the global variable
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188 uip_len is set to a value > 0. */
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191 vSendEMACTxData( uip_len );
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197 if( timer_expired( &periodic_timer ) && ( uip_buf != NULL ) )
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199 timer_reset( &periodic_timer );
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200 for( i = 0; i < UIP_CONNS; i++ )
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204 /* If the above function invocation resulted in data that
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205 should be sent out on the network, the global variable
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206 uip_len is set to a value > 0. */
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210 vSendEMACTxData( uip_len );
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214 /* Call the ARP timer function every 10 seconds. */
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215 if( timer_expired( &arp_timer ) )
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217 timer_reset( &arp_timer );
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223 /* We did not receive a packet, and there was no periodic
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224 processing to perform. Block for a fixed period. If a packet
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225 is received during this period we will be woken by the ISR
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226 giving us the Semaphore. */
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227 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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232 /*-----------------------------------------------------------*/
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234 static void prvSetMACAddress( void )
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236 struct uip_eth_addr xAddr;
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238 /* Configure the MAC address in the uIP stack. */
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239 xAddr.addr[ 0 ] = configMAC_ADDR0;
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240 xAddr.addr[ 1 ] = configMAC_ADDR1;
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241 xAddr.addr[ 2 ] = configMAC_ADDR2;
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242 xAddr.addr[ 3 ] = configMAC_ADDR3;
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243 xAddr.addr[ 4 ] = configMAC_ADDR4;
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244 xAddr.addr[ 5 ] = configMAC_ADDR5;
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245 uip_setethaddr( xAddr );
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247 /*-----------------------------------------------------------*/
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249 void vApplicationProcessFormInput( char *pcInputString )
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252 extern void vParTestSetLEDState( long lState );
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254 /* Process the form input sent by the IO page of the served HTML. */
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256 c = strstr( pcInputString, "?" );
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259 /* Turn the FIO1 LED's on or off in accordance with the check box status. */
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260 if( strstr( c, "LED0=1" ) != NULL )
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262 vParTestSetLEDState( pdTRUE );
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266 vParTestSetLEDState( pdFALSE );
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