Demo/CORTEX_LM3Sxxxx_Rowley/webserver/uIP_Task.c - third_party/github/FreeRTOS/FreeRTOS-Kernel - Git at Google

 /*
     FreeRTOS V6.0.3 - Copyright (C) 2010 Real Time Engineers Ltd.

     ***************************************************************************
     *                                                                         *
     * If you are:                                                             *
     *                                                                         *
     *    + New to FreeRTOS,                                                   *
     *    + Wanting to learn FreeRTOS or multitasking in general quickly       *
     *    + Looking for basic training,                                        *
     *    + Wanting to improve your FreeRTOS skills and productivity           *
     *                                                                         *
     * then take a look at the FreeRTOS eBook                                  *
     *                                                                         *
     *        "Using the FreeRTOS Real Time Kernel - a Practical Guide"        *
     *                  http://www.FreeRTOS.org/Documentation                  *
     *                                                                         *
     * A pdf reference manual is also available.  Both are usually delivered   *
     * to your inbox within 20 minutes to two hours when purchased between 8am *
     * and 8pm GMT (although please allow up to 24 hours in case of            *
     * exceptional circumstances).  Thank you for your support!                *
     *                                                                         *
     ***************************************************************************

     This file is part of the FreeRTOS distribution.

     FreeRTOS is free software; you can redistribute it and/or modify it under
     the terms of the GNU General Public License (version 2) as published by the
     Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
     ***NOTE*** The exception to the GPL is included to allow you to distribute
     a combined work that includes FreeRTOS without being obliged to provide the
     source code for proprietary components outside of the FreeRTOS kernel.
     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
     more details. You should have received a copy of the GNU General Public
     License and the FreeRTOS license exception along with FreeRTOS; if not it
     can be viewed here: http://www.freertos.org/a00114.html and also obtained
     by writing to Richard Barry, contact details for whom are available on the
     FreeRTOS WEB site.

     1 tab == 4 spaces!

     http://www.FreeRTOS.org - Documentation, latest information, license and
     contact details.

     http://www.SafeRTOS.com - A version that is certified for use in safety
     critical systems.

     http://www.OpenRTOS.com - Commercial support, development, porting,
     licensing and training services.
 */
 /* Standard includes. */
 #include <string.h>

 /* Scheduler includes. */
 #include "FreeRTOS.h"
 #include "task.h"
 #include "semphr.h"

 #include "lcd_message.h"

 /* uip includes. */
 #include "hw_types.h"

 #include "uip.h"
 #include "uip_arp.h"
 #include "httpd.h"
 #include "timer.h"
 #include "clock-arch.h"
 #include "hw_ethernet.h"
 #include "ethernet.h"
 #include "hw_memmap.h"
 #include "lmi_flash.h"
 #include "sysctl.h"

 /* Demo includes. */
 #include "emac.h"
 #include "partest.h"

 /*-----------------------------------------------------------*/

 /* IP address configuration. */
 #define uipIP_ADDR0		192
 #define uipIP_ADDR1		168
 #define uipIP_ADDR2		0
 #define uipIP_ADDR3		201

 /* Netmask configuration. */
 #define uipNETMASK_0	255
 #define uipNETMASK_1	255
 #define uipNETMASK_2	255
 #define uipNETMASK_3	0

 /* How long to wait before attempting to connect the MAC again. */
 #define uipINIT_WAIT    100

 /* Shortcut to the header within the Rx buffer. */
 #define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])

 /* Standard constant. */
 #define uipTOTAL_FRAME_HEADER_SIZE	54

 /*-----------------------------------------------------------*/

 /*
  * Send the uIP buffer to the MAC.
  */
 static void prvENET_Send(void);

 /*
  * Setup the MAC address in the MAC itself, and in the uIP stack.
  */
 static void prvSetMACAddress( void );

 /*
  * Port functions required by the uIP stack.
  */
 void clock_init( void );
 clock_time_t clock_time( void );

 /*-----------------------------------------------------------*/

 /* The semaphore used by the ISR to wake the uIP task. */
 extern xSemaphoreHandle xEMACSemaphore;

 /*-----------------------------------------------------------*/

 void clock_init(void)
 {
 	/* This is done when the scheduler starts. */
 }
 /*-----------------------------------------------------------*/

 clock_time_t clock_time( void )
 {
 	return xTaskGetTickCount();
 }


 void vuIP_Task( void *pvParameters )
 {
 portBASE_TYPE i;
 uip_ipaddr_t xIPAddr;
 struct timer periodic_timer, arp_timer;
 extern void ( vEMAC_ISR )( void );

 	/* Enable/Reset the Ethernet Controller */
 	SysCtlPeripheralEnable( SYSCTL_PERIPH_ETH );
 	SysCtlPeripheralReset( SYSCTL_PERIPH_ETH );

 	/* Create the semaphore used by the ISR to wake this task. */
 	vSemaphoreCreateBinary( xEMACSemaphore );

 	/* Initialise the uIP stack. */
 	timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
 	timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
 	uip_init();
 	uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
 	uip_sethostaddr( xIPAddr );
 	uip_ipaddr( xIPAddr, uipNETMASK_0, uipNETMASK_1, uipNETMASK_2, uipNETMASK_3 );
     uip_setnetmask( xIPAddr );
 	httpd_init();

 	while( vInitEMAC() != pdPASS )
     {
         vTaskDelay( uipINIT_WAIT );
     }
 	prvSetMACAddress();


 	for( ;; )
 	{
 		/* Is there received data ready to be processed? */
 		uip_len = uiGetEMACRxData( uip_buf );

 		if( uip_len > 0 )
 		{
 			/* Standard uIP loop taken from the uIP manual. */

 			if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
 			{
 				uip_arp_ipin();
 				uip_input();

 				/* If the above function invocation resulted in data that
 				should be sent out on the network, the global variable
 				uip_len is set to a value > 0. */
 				if( uip_len > 0 )
 				{
 					uip_arp_out();
 					prvENET_Send();
 				}
 			}
 			else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
 			{
 				uip_arp_arpin();

 				/* If the above function invocation resulted in data that
 				should be sent out on the network, the global variable
 				uip_len is set to a value > 0. */
 				if( uip_len > 0 )
 				{
 					prvENET_Send();
 				}
 			}
 		}
 		else
 		{
 			if( timer_expired( &periodic_timer ) )
 			{
 				timer_reset( &periodic_timer );
 				for( i = 0; i < UIP_CONNS; i++ )
 				{
 					uip_periodic( i );

 					/* If the above function invocation resulted in data that
 					should be sent out on the network, the global variable
 					uip_len is set to a value > 0. */
 					if( uip_len > 0 )
 					{
 						uip_arp_out();
 						prvENET_Send();
 					}
 				}

 				/* Call the ARP timer function every 10 seconds. */
 				if( timer_expired( &arp_timer ) )
 				{
 					timer_reset( &arp_timer );
 					uip_arp_timer();
 				}
 			}
 			else
 			{
 				/* We did not receive a packet, and there was no periodic
 				processing to perform.  Block for a fixed period.  If a packet
 				is received during this period we will be woken by the ISR
 				giving us the Semaphore. */
 				xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
 			}
 		}
 	}
 }
 /*-----------------------------------------------------------*/

 static void prvENET_Send(void)
 {
     vInitialiseSend();
     vIncrementTxLength( uip_len );
     vSendBufferToMAC();
     vInitialiseSend();
     vIncrementTxLength( uip_len );
     vSendBufferToMAC();
 }
 /*-----------------------------------------------------------*/

 static void prvSetMACAddress( void )
 {
 unsigned long ulUser0, ulUser1;
 unsigned char pucMACArray[8];
 struct uip_eth_addr xAddr;

 	/* Get the device MAC address from flash */
     FlashUserGet(&ulUser0, &ulUser1);

 	/* Convert the MAC address from flash into sequence of bytes. */
     pucMACArray[0] = ((ulUser0 >>  0) & 0xff);
     pucMACArray[1] = ((ulUser0 >>  8) & 0xff);
     pucMACArray[2] = ((ulUser0 >> 16) & 0xff);
     pucMACArray[3] = ((ulUser1 >>  0) & 0xff);
     pucMACArray[4] = ((ulUser1 >>  8) & 0xff);
     pucMACArray[5] = ((ulUser1 >> 16) & 0xff);

 	/* Program the MAC address. */
     EthernetMACAddrSet(ETH_BASE, pucMACArray);

 	xAddr.addr[ 0 ] = pucMACArray[0];
 	xAddr.addr[ 1 ] = pucMACArray[1];
 	xAddr.addr[ 2 ] = pucMACArray[2];
 	xAddr.addr[ 3 ] = pucMACArray[3];
 	xAddr.addr[ 4 ] = pucMACArray[4];
 	xAddr.addr[ 5 ] = pucMACArray[5];
 	uip_setethaddr( xAddr );
 }
 /*-----------------------------------------------------------*/

 void vApplicationProcessFormInput( char *pcInputString, portBASE_TYPE xInputLength )
 {
 char *c, *pcText;
 static char cMessageForDisplay[ 32 ];
 extern xQueueHandle xOLEDQueue;
 xOLEDMessage xOLEDMessage;

 	/* Process the form input sent by the IO page of the served HTML. */

 	c = strstr( pcInputString, "?" );

     if( c )
     {
 		/* Turn LED's on or off in accordance with the check box status. */
 		if( strstr( c, "LED0=1" ) != NULL )
 		{
 			vParTestSetLED( 0, 1 );
 		}
 		else
 		{
 			vParTestSetLED( 0, 0 );
 		}

 		/* Find the start of the text to be displayed on the LCD. */
         pcText = strstr( c, "LCD=" );
         pcText += strlen( "LCD=" );

         /* Terminate the file name for further processing within uIP. */
         *c = 0x00;

         /* Terminate the LCD string. */
         c = strstr( pcText, " " );
         if( c != NULL )
         {
             *c = 0x00;
         }

         /* Add required spaces. */
         while( ( c = strstr( pcText, "+" ) ) != NULL )
         {
             *c = ' ';
         }

         /* Write the message to the LCD. */
 		strcpy( cMessageForDisplay, pcText );
 		xOLEDMessage.pcMessage = cMessageForDisplay;
         xQueueSend( xOLEDQueue, &xOLEDMessage, portMAX_DELAY );
     }
 }
	/*
	FreeRTOS V6.0.3 - Copyright (C) 2010 Real Time Engineers Ltd.

	***************************************************************************
	* *
	* If you are: *
	* *
	* + New to FreeRTOS, *
	* + Wanting to learn FreeRTOS or multitasking in general quickly *
	* + Looking for basic training, *
	* + Wanting to improve your FreeRTOS skills and productivity *
	* *
	* then take a look at the FreeRTOS eBook *
	* *
	* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
	* http://www.FreeRTOS.org/Documentation *
	* *
	* A pdf reference manual is also available. Both are usually delivered *
	* to your inbox within 20 minutes to two hours when purchased between 8am *
	* and 8pm GMT (although please allow up to 24 hours in case of *
	* exceptional circumstances). Thank you for your support! *
	* *
	***************************************************************************

	This file is part of the FreeRTOS distribution.

	FreeRTOS is free software; you can redistribute it and/or modify it under
	the terms of the GNU General Public License (version 2) as published by the
	Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
	*NOTE* The exception to the GPL is included to allow you to distribute
	a combined work that includes FreeRTOS without being obliged to provide the
	source code for proprietary components outside of the FreeRTOS kernel.
	FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	more details. You should have received a copy of the GNU General Public
	License and the FreeRTOS license exception along with FreeRTOS; if not it
	can be viewed here: http://www.freertos.org/a00114.html and also obtained
	by writing to Richard Barry, contact details for whom are available on the
	FreeRTOS WEB site.

	1 tab == 4 spaces!

	http://www.FreeRTOS.org - Documentation, latest information, license and
	contact details.

	http://www.SafeRTOS.com - A version that is certified for use in safety
	critical systems.

	http://www.OpenRTOS.com - Commercial support, development, porting,
	licensing and training services.
	*/
	/* Standard includes. */
	#include <string.h>

	/* Scheduler includes. */
	#include "FreeRTOS.h"
	#include "task.h"
	#include "semphr.h"

	#include "lcd_message.h"

	/* uip includes. */
	#include "hw_types.h"

	#include "uip.h"
	#include "uip_arp.h"
	#include "httpd.h"
	#include "timer.h"
	#include "clock-arch.h"
	#include "hw_ethernet.h"
	#include "ethernet.h"
	#include "hw_memmap.h"
	#include "lmi_flash.h"
	#include "sysctl.h"

	/* Demo includes. */
	#include "emac.h"
	#include "partest.h"

	/-----------------------------------------------------------/

	/* IP address configuration. */
	#define uipIP_ADDR0 192
	#define uipIP_ADDR1 168
	#define uipIP_ADDR2 0
	#define uipIP_ADDR3 201

	/* Netmask configuration. */
	#define uipNETMASK_0 255
	#define uipNETMASK_1 255
	#define uipNETMASK_2 255
	#define uipNETMASK_3 0

	/* How long to wait before attempting to connect the MAC again. */
	#define uipINIT_WAIT 100

	/* Shortcut to the header within the Rx buffer. */
	#define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])

	/* Standard constant. */
	#define uipTOTAL_FRAME_HEADER_SIZE 54

	/-----------------------------------------------------------/

	/*
	* Send the uIP buffer to the MAC.
	*/
	static void prvENET_Send(void);

	/*
	* Setup the MAC address in the MAC itself, and in the uIP stack.
	*/
	static void prvSetMACAddress( void );

	/*
	* Port functions required by the uIP stack.
	*/
	void clock_init( void );
	clock_time_t clock_time( void );

	/-----------------------------------------------------------/

	/* The semaphore used by the ISR to wake the uIP task. */
	extern xSemaphoreHandle xEMACSemaphore;

	/-----------------------------------------------------------/

	void clock_init(void)
	{
	/* This is done when the scheduler starts. */
	}
	/-----------------------------------------------------------/

	clock_time_t clock_time( void )
	{
	return xTaskGetTickCount();
	}


	void vuIP_Task( void *pvParameters )
	{
	portBASE_TYPE i;
	uip_ipaddr_t xIPAddr;
	struct timer periodic_timer, arp_timer;
	extern void ( vEMAC_ISR )( void );

	/* Enable/Reset the Ethernet Controller */
	SysCtlPeripheralEnable( SYSCTL_PERIPH_ETH );
	SysCtlPeripheralReset( SYSCTL_PERIPH_ETH );

	/* Create the semaphore used by the ISR to wake this task. */
	vSemaphoreCreateBinary( xEMACSemaphore );

	/* Initialise the uIP stack. */
	timer_set( &periodic_timer, configTICK_RATE_HZ / 2 );
	timer_set( &arp_timer, configTICK_RATE_HZ * 10 );
	uip_init();
	uip_ipaddr( xIPAddr, uipIP_ADDR0, uipIP_ADDR1, uipIP_ADDR2, uipIP_ADDR3 );
	uip_sethostaddr( xIPAddr );
	uip_ipaddr( xIPAddr, uipNETMASK_0, uipNETMASK_1, uipNETMASK_2, uipNETMASK_3 );
	uip_setnetmask( xIPAddr );
	httpd_init();

	while( vInitEMAC() != pdPASS )
	{
	vTaskDelay( uipINIT_WAIT );
	}
	prvSetMACAddress();


	for( ;; )
	{
	/* Is there received data ready to be processed? */
	uip_len = uiGetEMACRxData( uip_buf );

	if( uip_len > 0 )
	{
	/* Standard uIP loop taken from the uIP manual. */

	if( xHeader->type == htons( UIP_ETHTYPE_IP ) )
	{
	uip_arp_ipin();
	uip_input();

	/* If the above function invocation resulted in data that
	should be sent out on the network, the global variable
	uip_len is set to a value > 0. */
	if( uip_len > 0 )
	{
	uip_arp_out();
	prvENET_Send();
	}
	}
	else if( xHeader->type == htons( UIP_ETHTYPE_ARP ) )
	{
	uip_arp_arpin();

	/* If the above function invocation resulted in data that
	should be sent out on the network, the global variable
	uip_len is set to a value > 0. */
	if( uip_len > 0 )
	{
	prvENET_Send();
	}
	}
	}
	else
	{
	if( timer_expired( &periodic_timer ) )
	{
	timer_reset( &periodic_timer );
	for( i = 0; i < UIP_CONNS; i++ )
	{
	uip_periodic( i );

	/* If the above function invocation resulted in data that
	should be sent out on the network, the global variable
	uip_len is set to a value > 0. */
	if( uip_len > 0 )
	{
	uip_arp_out();
	prvENET_Send();
	}
	}

	/* Call the ARP timer function every 10 seconds. */
	if( timer_expired( &arp_timer ) )
	{
	timer_reset( &arp_timer );
	uip_arp_timer();
	}
	}
	else
	{
	/* We did not receive a packet, and there was no periodic
	processing to perform. Block for a fixed period. If a packet
	is received during this period we will be woken by the ISR
	giving us the Semaphore. */
	xSemaphoreTake( xEMACSemaphore, configTICK_RATE_HZ / 2 );
	}
	}
	}
	}
	/-----------------------------------------------------------/

	static void prvENET_Send(void)
	{
	vInitialiseSend();
	vIncrementTxLength( uip_len );
	vSendBufferToMAC();
	vInitialiseSend();
	vIncrementTxLength( uip_len );
	vSendBufferToMAC();
	}
	/-----------------------------------------------------------/

	static void prvSetMACAddress( void )
	{
	unsigned long ulUser0, ulUser1;
	unsigned char pucMACArray[8];
	struct uip_eth_addr xAddr;

	/* Get the device MAC address from flash */
	FlashUserGet(&ulUser0, &ulUser1);

	/* Convert the MAC address from flash into sequence of bytes. */
	pucMACArray[0] = ((ulUser0 >> 0) & 0xff);
	pucMACArray[1] = ((ulUser0 >> 8) & 0xff);
	pucMACArray[2] = ((ulUser0 >> 16) & 0xff);
	pucMACArray[3] = ((ulUser1 >> 0) & 0xff);
	pucMACArray[4] = ((ulUser1 >> 8) & 0xff);
	pucMACArray[5] = ((ulUser1 >> 16) & 0xff);

	/* Program the MAC address. */
	EthernetMACAddrSet(ETH_BASE, pucMACArray);

	xAddr.addr[ 0 ] = pucMACArray[0];
	xAddr.addr[ 1 ] = pucMACArray[1];
	xAddr.addr[ 2 ] = pucMACArray[2];
	xAddr.addr[ 3 ] = pucMACArray[3];
	xAddr.addr[ 4 ] = pucMACArray[4];
	xAddr.addr[ 5 ] = pucMACArray[5];
	uip_setethaddr( xAddr );
	}
	/-----------------------------------------------------------/

	void vApplicationProcessFormInput( char *pcInputString, portBASE_TYPE xInputLength )
	{
	char c, pcText;
	static char cMessageForDisplay[ 32 ];
	extern xQueueHandle xOLEDQueue;
	xOLEDMessage xOLEDMessage;

	/* Process the form input sent by the IO page of the served HTML. */

	c = strstr( pcInputString, "?" );

	if( c )
	{
	/* Turn LED's on or off in accordance with the check box status. */
	if( strstr( c, "LED0=1" ) != NULL )
	{
	vParTestSetLED( 0, 1 );
	}
	else
	{
	vParTestSetLED( 0, 0 );
	}

	/* Find the start of the text to be displayed on the LCD. */
	pcText = strstr( c, "LCD=" );
	pcText += strlen( "LCD=" );

	/* Terminate the file name for further processing within uIP. */
	*c = 0x00;

	/* Terminate the LCD string. */
	c = strstr( pcText, " " );
	if( c != NULL )
	{
	*c = 0x00;
	}

	/* Add required spaces. */
	while( ( c = strstr( pcText, "+" ) ) != NULL )
	{
	*c = ' ';
	}

	/* Write the message to the LCD. */
	strcpy( cMessageForDisplay, pcText );
	xOLEDMessage.pcMessage = cMessageForDisplay;
	xQueueSend( xOLEDQueue, &xOLEDMessage, portMAX_DELAY );
	}
	}