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/*
FreeRTOS V7.6.0 - Copyright (C) 2013 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that has become a de facto standard. *
* *
* Help yourself get started quickly and support the FreeRTOS *
* project by purchasing a FreeRTOS tutorial book, reference *
* manual, or both from: http://www.FreeRTOS.org/Documentation *
* *
* Thank you! *
* *
***************************************************************************
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 modification 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. Full license text is available from the following
link: http://www.freertos.org/a00114.html
1 tab == 4 spaces!
***************************************************************************
* *
* Having a problem? Start by reading the FAQ "My application does *
* not run, what could be wrong?" *
* *
* http://www.FreeRTOS.org/FAQHelp.html *
* *
***************************************************************************
http://www.FreeRTOS.org - Documentation, books, training, latest versions,
license and Real Time Engineers Ltd. contact details.
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
including FreeRTOS+Trace - an indispensable productivity tool, a DOS
compatible FAT file system, and our tiny thread aware UDP/IP stack.
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and middleware.
http://www.SafeRTOS.com - High Integrity Systems also provide a safety
engineered and independently SIL3 certified version for use in safety and
mission critical applications that require provable dependability.
1 tab == 4 spaces!
*/
/* Standard includes. */
#include <string.h>
/* Library includes. */
#include "91x_lib.h"
#include "91x_enet.h"
/* Scheduler includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "semphr.h"
/* uip includes. */
#include "uip.h"
#include "uip_arp.h"
#include "httpd.h"
#include "timer.h"
#include "clock-arch.h"
/*-----------------------------------------------------------*/
/* MAC address configuration. */
#define uipMAC_ADDR0 0x00
#define uipMAC_ADDR1 0x12
#define uipMAC_ADDR2 0x13
#define uipMAC_ADDR3 0x14
#define uipMAC_ADDR4 0x15
#define uipMAC_ADDR5 0x20
/* IP address configuration. */
#define uipIP_ADDR0 172
#define uipIP_ADDR1 25
#define uipIP_ADDR2 218
#define uipIP_ADDR3 11
/* Netmask configuration. */
#define uipNET_MASK0 255
#define uipNET_MASK1 255
#define uipNET_MASK2 255
#define uipNET_MASK3 0
/* Gateway address configuration. */
#define uipGATEWAY_ADDR0 172
#define uipGATEWAY_ADDR1 25
#define uipGATEWAY_ADDR2 218
#define uipGATEWAY_ADDR3 1
/* Shortcut to the header within the Rx buffer. */
#define xHeader ((struct uip_eth_hdr *) &uip_buf[ 0 ])
/* uIP update frequencies. */
#define uipMAX_BLOCK_TIME (configTICK_RATE_HZ / 4)
/* Interrupt status bit definition. */
#define uipDMI_RX_CURRENT_DONE 0x8000
/* If no buffers are available, then wait this long before looking again. */
#define uipBUFFER_WAIT_DELAY ( 10 / portTICK_RATE_MS )
#define uipBUFFER_WAIT_ATTEMPTS ( 10 )
/* 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 );
/*
* Used to return a pointer to the next buffer to be used.
*/
extern unsigned char *pcGetNextBuffer( 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. */
xSemaphoreHandle xSemaphore = NULL;
/*-----------------------------------------------------------*/
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;
/* Create the semaphore used by the ISR to wake this task. */
vSemaphoreCreateBinary( xSemaphore );
/* 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, uipNET_MASK0, uipNET_MASK1, uipNET_MASK2, uipNET_MASK3 );
uip_setnetmask( xIPAddr );
uip_ipaddr( xIPAddr, uipGATEWAY_ADDR0, uipGATEWAY_ADDR1, uipGATEWAY_ADDR2, uipGATEWAY_ADDR3 );
uip_setdraddr( xIPAddr );
httpd_init();
/* Initialise the MAC. */
ENET_InitClocksGPIO();
ENET_Init();
portENTER_CRITICAL();
{
ENET_Start();
prvSetMACAddress();
VIC_Config( ENET_ITLine, VIC_IRQ, 1 );
VIC_ITCmd( ENET_ITLine, ENABLE );
ENET_DMA->ISR = uipDMI_RX_CURRENT_DONE;
ENET_DMA->IER = uipDMI_RX_CURRENT_DONE;
}
portEXIT_CRITICAL();
while(1)
{
/* Is there received data ready to be processed? */
uip_len = ENET_HandleRxPkt( 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( xSemaphore, configTICK_RATE_HZ / 2 );
}
}
}
}
/*-----------------------------------------------------------*/
static void prvENET_Send(void)
{
portBASE_TYPE i;
static unsigned char *pcTxData;
/* Get a DMA buffer into which we can write the data to send. */
for( i = 0; i < uipBUFFER_WAIT_ATTEMPTS; i++ )
{
pcTxData = pcGetNextBuffer();
if( pcTxData )
{
break;
}
else
{
vTaskDelay( uipBUFFER_WAIT_DELAY );
}
}
if( pcTxData )
{
/* Copy the header into the Tx buffer. */
memcpy( ( void * ) pcTxData, ( void * ) uip_buf, uipTOTAL_FRAME_HEADER_SIZE );
if( uip_len > uipTOTAL_FRAME_HEADER_SIZE )
{
memcpy( ( void * ) &( pcTxData[ uipTOTAL_FRAME_HEADER_SIZE ] ), ( void * ) uip_appdata, ( uip_len - uipTOTAL_FRAME_HEADER_SIZE ) );
}
ENET_TxPkt( &pcTxData, uip_len );
}
}
/*-----------------------------------------------------------*/
void ENET_IRQHandler(void)
{
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;
/* Give the semaphore in case the uIP task needs waking. */
xSemaphoreGiveFromISR( xSemaphore, &xHigherPriorityTaskWoken );
/* Clear the interrupt. */
ENET_DMA->ISR = uipDMI_RX_CURRENT_DONE;
/* Switch tasks if necessary. */
portEND_SWITCHING_ISR( xHigherPriorityTaskWoken );
}
/*-----------------------------------------------------------*/
static void prvSetMACAddress( void )
{
struct uip_eth_addr xAddr;
/* Configure the MAC address in the uIP stack. */
xAddr.addr[ 0 ] = uipMAC_ADDR0;
xAddr.addr[ 1 ] = uipMAC_ADDR1;
xAddr.addr[ 2 ] = uipMAC_ADDR2;
xAddr.addr[ 3 ] = uipMAC_ADDR3;
xAddr.addr[ 4 ] = uipMAC_ADDR4;
xAddr.addr[ 5 ] = uipMAC_ADDR5;
uip_setethaddr( xAddr );
/* Write the MAC address to the MAC. */
ENET_MAC->MAL = ( uipMAC_ADDR3 << 24 ) | ( uipMAC_ADDR2 << 16 ) | ( uipMAC_ADDR1 << 8 ) | ( uipMAC_ADDR0 );
ENET_MAC->MAH = ( uipMAC_ADDR5 << 8 ) | ( uipMAC_ADDR4 );
}
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