/* | |
* FreeRTOS Kernel V10.3.0 | |
* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved. | |
* | |
* Permission is hereby granted, free of charge, to any person obtaining a copy of | |
* this software and associated documentation files (the "Software"), to deal in | |
* the Software without restriction, including without limitation the rights to | |
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of | |
* the Software, and to permit persons to whom the Software is furnished to do so, | |
* subject to the following conditions: | |
* | |
* The above copyright notice and this permission notice shall be included in all | |
* copies or substantial portions of the Software. | |
* | |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS | |
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR | |
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
* | |
* http://www.FreeRTOS.org | |
* http://aws.amazon.com/freertos | |
* | |
* 1 tab == 4 spaces! | |
*/ | |
/* Standard includes. */ | |
#include <string.h> | |
/* Scheduler includes. */ | |
#include "FreeRTOS.h" | |
#include "task.h" | |
#include "semphr.h" | |
/* uip includes. */ | |
#include "net/uip.h" | |
#include "net/uip_arp.h" | |
#include "apps/httpd/httpd.h" | |
#include "sys/timer.h" | |
#include "net/clock-arch.h" | |
/* Demo includes. */ | |
#include "ParTest.h" | |
/* Hardware includes. */ | |
#include "hwEthernet.h" | |
/*-----------------------------------------------------------*/ | |
/* How long to wait before attempting to connect the MAC again. */ | |
#define uipINIT_WAIT ( 100 / portTICK_PERIOD_MS ) | |
/* 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 | |
/*-----------------------------------------------------------*/ | |
/* | |
* 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. */ | |
SemaphoreHandle_t xEMACSemaphore = 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; | |
extern void ( vEMAC_ISR_Wrapper )( void ); | |
( void ) pvParameters; | |
/* 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, configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 ); | |
uip_sethostaddr( &xIPAddr ); | |
uip_ipaddr( &xIPAddr, configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 ); | |
uip_setnetmask( &xIPAddr ); | |
prvSetMACAddress(); | |
httpd_init(); | |
/* Create the semaphore used to wake the uIP task. */ | |
vSemaphoreCreateBinary( xEMACSemaphore ); | |
/* Initialise the MAC. */ | |
vInitEmac(); | |
while( lEMACWaitForLink() != pdPASS ) | |
{ | |
vTaskDelay( uipINIT_WAIT ); | |
} | |
for( ;; ) | |
{ | |
/* Is there received data ready to be processed? */ | |
uip_len = ( unsigned short ) ulEMACRead(); | |
if( ( uip_len > 0 ) && ( uip_buf != NULL ) ) | |
{ | |
/* 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(); | |
vEMACWrite(); | |
} | |
} | |
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 ) | |
{ | |
vEMACWrite(); | |
} | |
} | |
} | |
else | |
{ | |
if( timer_expired( &periodic_timer ) && ( uip_buf != NULL ) ) | |
{ | |
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(); | |
vEMACWrite(); | |
} | |
} | |
/* 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 prvSetMACAddress( void ) | |
{ | |
struct uip_eth_addr xAddr; | |
/* Configure the MAC address in the uIP stack. */ | |
xAddr.addr[ 0 ] = configMAC_ADDR0; | |
xAddr.addr[ 1 ] = configMAC_ADDR1; | |
xAddr.addr[ 2 ] = configMAC_ADDR2; | |
xAddr.addr[ 3 ] = configMAC_ADDR3; | |
xAddr.addr[ 4 ] = configMAC_ADDR4; | |
xAddr.addr[ 5 ] = configMAC_ADDR5; | |
uip_setethaddr( xAddr ); | |
} | |
/*-----------------------------------------------------------*/ | |
void vApplicationProcessFormInput( char *pcInputString ) | |
{ | |
char *c; | |
/* Process the form input sent by the IO page of the served HTML. */ | |
c = strstr( pcInputString, "?" ); | |
if( c ) | |
{ | |
/* Turn the FIO1 LED's on or off in accordance with the check box status. */ | |
if( strstr( c, "LED0=1" ) != NULL ) | |
{ | |
/* Turn LED 4 on. */ | |
vParTestSetLED( 4, 1 ); | |
} | |
else | |
{ | |
/* Turn LED 4 off. */ | |
vParTestSetLED( 4, 0 ); | |
} | |
} | |
} | |