/* | |
* FreeRTOS Kernel V10.0.1 | |
* Copyright (C) 2017 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> | |
/* 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_PERIOD_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. */ | |
SemaphoreHandle_t 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 ); | |
} | |