2 FreeRTOS V7.4.1 - Copyright (C) 2013 Real Time Engineers Ltd.
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4 FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT
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5 http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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7 ***************************************************************************
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9 * FreeRTOS tutorial books are available in pdf and paperback. *
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10 * Complete, revised, and edited pdf reference manuals are also *
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13 * Purchasing FreeRTOS documentation will not only help you, by *
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14 * ensuring you get running as quickly as possible and with an *
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15 * in-depth knowledge of how to use FreeRTOS, it will also help *
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16 * the FreeRTOS project to continue with its mission of providing *
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17 * professional grade, cross platform, de facto standard solutions *
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18 * for microcontrollers - completely free of charge! *
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20 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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22 * Thank you for using FreeRTOS, and thank you for your support! *
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24 ***************************************************************************
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27 This file is part of the FreeRTOS distribution.
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29 FreeRTOS is free software; you can redistribute it and/or modify it under
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30 the terms of the GNU General Public License (version 2) as published by the
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31 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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33 >>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to
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34 distribute a combined work that includes FreeRTOS without being obliged to
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35 provide the source code for proprietary components outside of the FreeRTOS
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38 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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39 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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40 FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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41 details. You should have received a copy of the GNU General Public License
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42 and the FreeRTOS license exception along with FreeRTOS; if not it can be
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43 viewed here: http://www.freertos.org/a00114.html and also obtained by
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44 writing to Real Time Engineers Ltd., contact details for whom are available
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45 on the FreeRTOS WEB site.
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49 ***************************************************************************
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51 * Having a problem? Start by reading the FAQ "My application does *
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52 * not run, what could be wrong?" *
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54 * http://www.FreeRTOS.org/FAQHelp.html *
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56 ***************************************************************************
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59 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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60 license and Real Time Engineers Ltd. contact details.
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62 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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63 including FreeRTOS+Trace - an indispensable productivity tool, and our new
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64 fully thread aware and reentrant UDP/IP stack.
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66 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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67 Integrity Systems, who sell the code with commercial support,
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68 indemnification and middleware, under the OpenRTOS brand.
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70 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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71 engineered and independently SIL3 certified version for use in safety and
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72 mission critical applications that require provable dependability.
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74 /* Standard includes. */
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77 /* Scheduler includes. */
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78 #include "FreeRTOS.h"
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82 #include "lcd_message.h"
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85 #include "hw_types.h"
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88 #include "uip_arp.h"
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91 #include "clock-arch.h"
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92 #include "hw_ethernet.h"
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93 #include "ethernet.h"
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94 #include "hw_memmap.h"
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95 #include "lmi_flash.h"
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98 /* Demo includes. */
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100 #include "partest.h"
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102 /*-----------------------------------------------------------*/
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104 /* IP address configuration. */
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105 #define uipIP_ADDR0 172
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106 #define uipIP_ADDR1 25
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107 #define uipIP_ADDR2 218
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108 #define uipIP_ADDR3 19
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110 /* How long to wait before attempting to connect the MAC again. */
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111 #define uipINIT_WAIT 100
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113 /* Shortcut to the header within the Rx buffer. */
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114 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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116 /* Standard constant. */
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117 #define uipTOTAL_FRAME_HEADER_SIZE 54
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119 /*-----------------------------------------------------------*/
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122 * Send the uIP buffer to the MAC.
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124 static void prvENET_Send(void);
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127 * Setup the MAC address in the MAC itself, and in the uIP stack.
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129 static void prvSetMACAddress( void );
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132 * Port functions required by the uIP stack.
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134 void clock_init( void );
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135 clock_time_t clock_time( void );
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137 /*-----------------------------------------------------------*/
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139 /* The semaphore used by the ISR to wake the uIP task. */
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140 extern xSemaphoreHandle xEMACSemaphore;
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142 /*-----------------------------------------------------------*/
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144 void clock_init(void)
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146 /* This is done when the scheduler starts. */
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148 /*-----------------------------------------------------------*/
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150 clock_time_t clock_time( void )
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152 return xTaskGetTickCount();
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156 void vuIP_Task( void *pvParameters )
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159 uip_ipaddr_t xIPAddr;
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160 struct timer periodic_timer, arp_timer;
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161 extern void ( vEMAC_ISR )( void );
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163 /* Enable/Reset the Ethernet Controller */
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164 SysCtlPeripheralEnable( SYSCTL_PERIPH_ETH );
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165 SysCtlPeripheralReset( SYSCTL_PERIPH_ETH );
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167 /* Create the semaphore used by the ISR to wake this task. */
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168 vSemaphoreCreateBinary( xEMACSemaphore );
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170 /* Initialise the uIP stack. */
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171 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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172 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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174 uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
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175 uip_sethostaddr( xIPAddr );
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178 while( vInitEMAC() != pdPASS )
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180 vTaskDelay( uipINIT_WAIT );
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182 prvSetMACAddress();
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187 /* Is there received data ready to be processed? */
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188 uip_len = uiGetEMACRxData( uip_buf );
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192 /* Standard uIP loop taken from the uIP manual. */
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194 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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199 /* If the above function invocation resulted in data that
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200 should be sent out on the network, the global variable
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201 uip_len is set to a value > 0. */
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208 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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212 /* If the above function invocation resulted in data that
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213 should be sent out on the network, the global variable
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214 uip_len is set to a value > 0. */
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223 if( timer_expired( &periodic_timer ) )
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225 timer_reset( &periodic_timer );
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226 for( i = 0; i < UIP_CONNS; i++ )
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230 /* If the above function invocation resulted in data that
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231 should be sent out on the network, the global variable
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232 uip_len is set to a value > 0. */
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240 /* Call the ARP timer function every 10 seconds. */
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241 if( timer_expired( &arp_timer ) )
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243 timer_reset( &arp_timer );
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249 /* We did not receive a packet, and there was no periodic
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250 processing to perform. Block for a fixed period. If a packet
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251 is received during this period we will be woken by the ISR
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252 giving us the Semaphore. */
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253 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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258 /*-----------------------------------------------------------*/
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260 static void prvENET_Send(void)
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263 vIncrementTxLength( uip_len );
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264 vSendBufferToMAC();
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266 /*-----------------------------------------------------------*/
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268 static void prvSetMACAddress( void )
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270 unsigned portLONG ulUser0, ulUser1;
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271 unsigned char pucMACArray[8];
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272 struct uip_eth_addr xAddr;
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274 /* Get the device MAC address from flash */
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275 FlashUserGet(&ulUser0, &ulUser1);
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277 /* Convert the MAC address from flash into sequence of bytes. */
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278 pucMACArray[0] = ((ulUser0 >> 0) & 0xff);
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279 pucMACArray[1] = ((ulUser0 >> 8) & 0xff);
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280 pucMACArray[2] = ((ulUser0 >> 16) & 0xff);
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281 pucMACArray[3] = ((ulUser1 >> 0) & 0xff);
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282 pucMACArray[4] = ((ulUser1 >> 8) & 0xff);
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283 pucMACArray[5] = ((ulUser1 >> 16) & 0xff);
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285 /* Program the MAC address. */
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286 EthernetMACAddrSet(ETH_BASE, pucMACArray);
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288 xAddr.addr[ 0 ] = pucMACArray[0];
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289 xAddr.addr[ 1 ] = pucMACArray[1];
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290 xAddr.addr[ 2 ] = pucMACArray[2];
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291 xAddr.addr[ 3 ] = pucMACArray[3];
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292 xAddr.addr[ 4 ] = pucMACArray[4];
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293 xAddr.addr[ 5 ] = pucMACArray[5];
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294 uip_setethaddr( xAddr );
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296 /*-----------------------------------------------------------*/
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298 void vApplicationProcessFormInput( portCHAR *pcInputString, portBASE_TYPE xInputLength )
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301 static portCHAR cMessageForDisplay[ 32 ];
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302 extern xQueueHandle xOLEDQueue;
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303 xOLEDMessage xOLEDMessage;
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305 /* Process the form input sent by the IO page of the served HTML. */
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307 c = strstr( pcInputString, "?" );
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311 /* Turn LED's on or off in accordance with the check box status. */
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312 if( strstr( c, "LED0=1" ) != NULL )
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314 vParTestSetLED( 0, 1 );
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318 vParTestSetLED( 0, 0 );
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321 /* Find the start of the text to be displayed on the LCD. */
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322 pcText = strstr( c, "LCD=" );
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323 pcText += strlen( "LCD=" );
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325 /* Terminate the file name for further processing within uIP. */
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328 /* Terminate the LCD string. */
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329 c = strstr( pcText, " " );
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335 /* Add required spaces. */
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336 while( ( c = strstr( pcText, "+" ) ) != NULL )
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341 /* Write the message to the LCD. */
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342 strcpy( cMessageForDisplay, pcText );
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343 xOLEDMessage.pcMessage = cMessageForDisplay;
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344 xQueueSend( xOLEDQueue, &xOLEDMessage, portMAX_DELAY );
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