2 FreeRTOS V7.6.0 - Copyright (C) 2013 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 ***************************************************************************
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9 * FreeRTOS provides completely free yet professionally developed, *
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10 * robust, strictly quality controlled, supported, and cross *
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11 * platform software that has become a de facto standard. *
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13 * Help yourself get started quickly and support the FreeRTOS *
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14 * project by purchasing a FreeRTOS tutorial book, reference *
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15 * manual, or both from: http://www.FreeRTOS.org/Documentation *
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19 ***************************************************************************
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21 This file is part of the FreeRTOS distribution.
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23 FreeRTOS is free software; you can redistribute it and/or modify it under
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24 the terms of the GNU General Public License (version 2) as published by the
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25 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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27 >>! NOTE: The modification to the GPL is included to allow you to distribute
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28 >>! a combined work that includes FreeRTOS without being obliged to provide
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29 >>! the source code for proprietary components outside of the FreeRTOS
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32 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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33 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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34 FOR A PARTICULAR PURPOSE. Full license text is available from the following
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35 link: http://www.freertos.org/a00114.html
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39 ***************************************************************************
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41 * Having a problem? Start by reading the FAQ "My application does *
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42 * not run, what could be wrong?" *
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44 * http://www.FreeRTOS.org/FAQHelp.html *
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46 ***************************************************************************
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48 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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49 license and Real Time Engineers Ltd. contact details.
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51 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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52 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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53 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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55 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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56 Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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57 licenses offer ticketed support, indemnification and middleware.
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59 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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60 engineered and independently SIL3 certified version for use in safety and
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61 mission critical applications that require provable dependability.
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65 /* Standard includes. */
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68 /* Library includes. */
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69 #include "91x_lib.h"
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70 #include "91x_enet.h"
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72 /* Scheduler includes. */
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73 #include "FreeRTOS.h"
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79 #include "uip_arp.h"
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82 #include "clock-arch.h"
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84 /*-----------------------------------------------------------*/
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86 /* MAC address configuration. */
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87 #define uipMAC_ADDR0 0x00
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88 #define uipMAC_ADDR1 0x12
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89 #define uipMAC_ADDR2 0x13
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90 #define uipMAC_ADDR3 0x14
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91 #define uipMAC_ADDR4 0x15
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92 #define uipMAC_ADDR5 0x20
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94 /* IP address configuration. */
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95 #define uipIP_ADDR0 172
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96 #define uipIP_ADDR1 25
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97 #define uipIP_ADDR2 218
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98 #define uipIP_ADDR3 11
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100 /* Netmask configuration. */
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101 #define uipNET_MASK0 255
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102 #define uipNET_MASK1 255
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103 #define uipNET_MASK2 255
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104 #define uipNET_MASK3 0
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106 /* Gateway address configuration. */
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107 #define uipGATEWAY_ADDR0 172
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108 #define uipGATEWAY_ADDR1 25
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109 #define uipGATEWAY_ADDR2 218
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110 #define uipGATEWAY_ADDR3 1
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112 /* Shortcut to the header within the Rx buffer. */
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113 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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115 /* uIP update frequencies. */
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116 #define uipMAX_BLOCK_TIME (configTICK_RATE_HZ / 4)
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118 /* Interrupt status bit definition. */
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119 #define uipDMI_RX_CURRENT_DONE 0x8000
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121 /* If no buffers are available, then wait this long before looking again. */
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122 #define uipBUFFER_WAIT_DELAY ( 10 / portTICK_RATE_MS )
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123 #define uipBUFFER_WAIT_ATTEMPTS ( 10 )
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125 /* Standard constant. */
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126 #define uipTOTAL_FRAME_HEADER_SIZE 54
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128 /*-----------------------------------------------------------*/
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131 * Send the uIP buffer to the MAC.
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133 static void prvENET_Send(void);
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136 * Setup the MAC address in the MAC itself, and in the uIP stack.
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138 static void prvSetMACAddress( void );
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141 * Used to return a pointer to the next buffer to be used.
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143 extern unsigned char *pcGetNextBuffer( void );
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146 * Port functions required by the uIP stack.
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148 void clock_init( void );
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149 clock_time_t clock_time( void );
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151 /*-----------------------------------------------------------*/
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153 /* The semaphore used by the ISR to wake the uIP task. */
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154 xSemaphoreHandle xSemaphore = NULL;
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156 /*-----------------------------------------------------------*/
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158 void clock_init(void)
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160 /* This is done when the scheduler starts. */
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162 /*-----------------------------------------------------------*/
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164 clock_time_t clock_time( void )
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166 return xTaskGetTickCount();
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168 /*-----------------------------------------------------------*/
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170 void vuIP_Task( void *pvParameters )
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173 uip_ipaddr_t xIPAddr;
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174 struct timer periodic_timer, arp_timer;
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176 /* Create the semaphore used by the ISR to wake this task. */
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177 vSemaphoreCreateBinary( xSemaphore );
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179 /* Initialise the uIP stack. */
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180 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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181 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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183 uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
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184 uip_sethostaddr( xIPAddr );
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185 uip_ipaddr( xIPAddr, uipNET_MASK0, uipNET_MASK1, uipNET_MASK2, uipNET_MASK3 );
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186 uip_setnetmask( xIPAddr );
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187 uip_ipaddr( xIPAddr, uipGATEWAY_ADDR0, uipGATEWAY_ADDR1, uipGATEWAY_ADDR2, uipGATEWAY_ADDR3 );
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188 uip_setdraddr( xIPAddr );
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191 /* Initialise the MAC. */
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192 ENET_InitClocksGPIO();
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194 portENTER_CRITICAL();
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197 prvSetMACAddress();
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198 VIC_Config( ENET_ITLine, VIC_IRQ, 1 );
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199 VIC_ITCmd( ENET_ITLine, ENABLE );
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200 ENET_DMA->ISR = uipDMI_RX_CURRENT_DONE;
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201 ENET_DMA->IER = uipDMI_RX_CURRENT_DONE;
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203 portEXIT_CRITICAL();
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208 /* Is there received data ready to be processed? */
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209 uip_len = ENET_HandleRxPkt( uip_buf );
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213 /* Standard uIP loop taken from the uIP manual. */
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214 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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219 /* If the above function invocation resulted in data that
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220 should be sent out on the network, the global variable
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221 uip_len is set to a value > 0. */
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228 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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232 /* If the above function invocation resulted in data that
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233 should be sent out on the network, the global variable
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234 uip_len is set to a value > 0. */
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243 if( timer_expired( &periodic_timer ) )
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245 timer_reset( &periodic_timer );
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246 for( i = 0; i < UIP_CONNS; i++ )
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250 /* If the above function invocation resulted in data that
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251 should be sent out on the network, the global variable
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252 uip_len is set to a value > 0. */
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260 /* Call the ARP timer function every 10 seconds. */
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261 if( timer_expired( &arp_timer ) )
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263 timer_reset( &arp_timer );
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269 /* We did not receive a packet, and there was no periodic
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270 processing to perform. Block for a fixed period. If a packet
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271 is received during this period we will be woken by the ISR
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272 giving us the Semaphore. */
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273 xSemaphoreTake( xSemaphore, configTICK_RATE_HZ / 2 );
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278 /*-----------------------------------------------------------*/
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280 static void prvENET_Send(void)
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283 static unsigned char *pcTxData;
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285 /* Get a DMA buffer into which we can write the data to send. */
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286 for( i = 0; i < uipBUFFER_WAIT_ATTEMPTS; i++ )
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288 pcTxData = pcGetNextBuffer();
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296 vTaskDelay( uipBUFFER_WAIT_DELAY );
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302 /* Copy the header into the Tx buffer. */
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303 memcpy( ( void * ) pcTxData, ( void * ) uip_buf, uipTOTAL_FRAME_HEADER_SIZE );
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304 if( uip_len > uipTOTAL_FRAME_HEADER_SIZE )
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306 memcpy( ( void * ) &( pcTxData[ uipTOTAL_FRAME_HEADER_SIZE ] ), ( void * ) uip_appdata, ( uip_len - uipTOTAL_FRAME_HEADER_SIZE ) );
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309 ENET_TxPkt( &pcTxData, uip_len );
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312 /*-----------------------------------------------------------*/
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314 void ENET_IRQHandler(void)
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316 portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
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318 /* Give the semaphore in case the uIP task needs waking. */
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319 xSemaphoreGiveFromISR( xSemaphore, &xHigherPriorityTaskWoken );
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321 /* Clear the interrupt. */
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322 ENET_DMA->ISR = uipDMI_RX_CURRENT_DONE;
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324 /* Switch tasks if necessary. */
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325 portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
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327 /*-----------------------------------------------------------*/
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329 static void prvSetMACAddress( void )
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331 struct uip_eth_addr xAddr;
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333 /* Configure the MAC address in the uIP stack. */
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334 xAddr.addr[ 0 ] = uipMAC_ADDR0;
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335 xAddr.addr[ 1 ] = uipMAC_ADDR1;
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336 xAddr.addr[ 2 ] = uipMAC_ADDR2;
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337 xAddr.addr[ 3 ] = uipMAC_ADDR3;
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338 xAddr.addr[ 4 ] = uipMAC_ADDR4;
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339 xAddr.addr[ 5 ] = uipMAC_ADDR5;
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340 uip_setethaddr( xAddr );
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342 /* Write the MAC address to the MAC. */
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343 ENET_MAC->MAL = ( uipMAC_ADDR3 << 24 ) | ( uipMAC_ADDR2 << 16 ) | ( uipMAC_ADDR1 << 8 ) | ( uipMAC_ADDR0 );
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344 ENET_MAC->MAH = ( uipMAC_ADDR5 << 8 ) | ( uipMAC_ADDR4 );
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