2 FreeRTOS V8.1.2 - 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 ***************************************************************************
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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 !<<
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28 >>! distribute a combined work that includes FreeRTOS without being !<<
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29 >>! obliged to provide the source code for proprietary components !<<
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30 >>! outside of the FreeRTOS kernel. !<<
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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 /* Scheduler includes. */
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69 #include "FreeRTOS.h"
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73 #include "lcd_message.h"
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76 #include "hw_types.h"
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79 #include "uip_arp.h"
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82 #include "clock-arch.h"
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83 #include "hw_ethernet.h"
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84 #include "ethernet.h"
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85 #include "hw_memmap.h"
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86 #include "lmi_flash.h"
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89 /* Demo includes. */
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91 #include "partest.h"
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93 /*-----------------------------------------------------------*/
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95 /* IP address configuration. */
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96 #define uipIP_ADDR0 172
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97 #define uipIP_ADDR1 25
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98 #define uipIP_ADDR2 218
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99 #define uipIP_ADDR3 19
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101 /* How long to wait before attempting to connect the MAC again. */
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102 #define uipINIT_WAIT 100
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104 /* Shortcut to the header within the Rx buffer. */
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105 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
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107 /* Standard constant. */
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108 #define uipTOTAL_FRAME_HEADER_SIZE 54
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110 /*-----------------------------------------------------------*/
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113 * Send the uIP buffer to the MAC.
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115 static void prvENET_Send(void);
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118 * Setup the MAC address in the MAC itself, and in the uIP stack.
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120 static void prvSetMACAddress( void );
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123 * Port functions required by the uIP stack.
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125 void clock_init( void );
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126 clock_time_t clock_time( void );
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128 /*-----------------------------------------------------------*/
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130 /* The semaphore used by the ISR to wake the uIP task. */
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131 extern SemaphoreHandle_t xEMACSemaphore;
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133 /*-----------------------------------------------------------*/
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135 void clock_init(void)
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137 /* This is done when the scheduler starts. */
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139 /*-----------------------------------------------------------*/
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141 clock_time_t clock_time( void )
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143 return xTaskGetTickCount();
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147 void vuIP_Task( void *pvParameters )
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150 uip_ipaddr_t xIPAddr;
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151 struct timer periodic_timer, arp_timer;
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152 extern void ( vEMAC_ISR )( void );
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154 /* Enable/Reset the Ethernet Controller */
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155 SysCtlPeripheralEnable( SYSCTL_PERIPH_ETH );
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156 SysCtlPeripheralReset( SYSCTL_PERIPH_ETH );
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158 /* Create the semaphore used by the ISR to wake this task. */
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159 vSemaphoreCreateBinary( xEMACSemaphore );
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161 /* Initialise the uIP stack. */
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162 timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
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163 timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
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165 uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
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166 uip_sethostaddr( xIPAddr );
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169 while( vInitEMAC() != pdPASS )
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171 vTaskDelay( uipINIT_WAIT );
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173 prvSetMACAddress();
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178 /* Is there received data ready to be processed? */
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179 uip_len = uiGetEMACRxData( uip_buf );
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183 /* Standard uIP loop taken from the uIP manual. */
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185 if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
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190 /* If the above function invocation resulted in data that
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191 should be sent out on the network, the global variable
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192 uip_len is set to a value > 0. */
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199 else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
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203 /* If the above function invocation resulted in data that
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204 should be sent out on the network, the global variable
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205 uip_len is set to a value > 0. */
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214 if( timer_expired( &periodic_timer ) )
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216 timer_reset( &periodic_timer );
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217 for( i = 0; i < UIP_CONNS; i++ )
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221 /* If the above function invocation resulted in data that
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222 should be sent out on the network, the global variable
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223 uip_len is set to a value > 0. */
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231 /* Call the ARP timer function every 10 seconds. */
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232 if( timer_expired( &arp_timer ) )
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234 timer_reset( &arp_timer );
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240 /* We did not receive a packet, and there was no periodic
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241 processing to perform. Block for a fixed period. If a packet
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242 is received during this period we will be woken by the ISR
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243 giving us the Semaphore. */
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244 xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
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249 /*-----------------------------------------------------------*/
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251 static void prvENET_Send(void)
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254 vIncrementTxLength( uip_len );
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255 vSendBufferToMAC();
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257 /*-----------------------------------------------------------*/
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259 static void prvSetMACAddress( void )
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261 unsigned long ulUser0, ulUser1;
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262 unsigned char pucMACArray[8];
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263 struct uip_eth_addr xAddr;
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265 /* Get the device MAC address from flash */
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266 FlashUserGet(&ulUser0, &ulUser1);
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268 /* Convert the MAC address from flash into sequence of bytes. */
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269 pucMACArray[0] = ((ulUser0 >> 0) & 0xff);
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270 pucMACArray[1] = ((ulUser0 >> 8) & 0xff);
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271 pucMACArray[2] = ((ulUser0 >> 16) & 0xff);
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272 pucMACArray[3] = ((ulUser1 >> 0) & 0xff);
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273 pucMACArray[4] = ((ulUser1 >> 8) & 0xff);
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274 pucMACArray[5] = ((ulUser1 >> 16) & 0xff);
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276 /* Program the MAC address. */
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277 EthernetMACAddrSet(ETH_BASE, pucMACArray);
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279 xAddr.addr[ 0 ] = pucMACArray[0];
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280 xAddr.addr[ 1 ] = pucMACArray[1];
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281 xAddr.addr[ 2 ] = pucMACArray[2];
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282 xAddr.addr[ 3 ] = pucMACArray[3];
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283 xAddr.addr[ 4 ] = pucMACArray[4];
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284 xAddr.addr[ 5 ] = pucMACArray[5];
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285 uip_setethaddr( xAddr );
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287 /*-----------------------------------------------------------*/
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289 void vApplicationProcessFormInput( char *pcInputString, portBASE_TYPE xInputLength )
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292 static char cMessageForDisplay[ 32 ];
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293 extern QueueHandle_t xOLEDQueue;
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294 xOLEDMessage xOLEDMessage;
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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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302 /* Turn LED's on or off in accordance with the check box status. */
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303 if( strstr( c, "LED0=1" ) != NULL )
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305 vParTestSetLED( 0, 1 );
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309 vParTestSetLED( 0, 0 );
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312 /* Find the start of the text to be displayed on the LCD. */
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313 pcText = strstr( c, "LCD=" );
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314 pcText += strlen( "LCD=" );
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316 /* Terminate the file name for further processing within uIP. */
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319 /* Terminate the LCD string. */
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320 c = strstr( pcText, " " );
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326 /* Add required spaces. */
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327 while( ( c = strstr( pcText, "+" ) ) != NULL )
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332 /* Write the message to the LCD. */
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333 strcpy( cMessageForDisplay, pcText );
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334 xOLEDMessage.pcMessage = cMessageForDisplay;
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335 xQueueSend( xOLEDQueue, &xOLEDMessage, portMAX_DELAY );
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