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Test: Add Linux Networking support with demo application (#71)

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* Test: Add Linux Networking support with demo application

* Test: revert files affected by uncrustify

* Test: revert files affected by uncrustify

Co-authored-by: Alfred Gedeon <gedeonag@amazon.com>
Co-authored-by: Yuhui Zheng <10982575+yuhui-zheng@users.noreply.github.com>
pull/75/head^2
alfred gedeon 5 years ago committed by GitHub
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FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/portable/NetworkInterface/linux/NetworkInterface.c
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/*
FreeRTOS+TCP V2.0.11
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://aws.amazon.com/freertos
http://www.FreeRTOS.org
*/
/* ========================= FreeRTOS includes ============================== */
#include "FreeRTOS.h"
#include "event_groups.h"
#include "task.h"
#include "semphr.h"
/* ========================= FreeRTOS+TCP includes ========================== */
#include "FreeRTOS_IP.h"
#include "FreeRTOS_IP_Private.h"
#include "NetworkBufferManagement.h"
#include "FreeRTOS_Stream_Buffer.h"
/* ======================== Standard Library inludes ======================== */
#include <stdio.h>
#include <unistd.h>
#include <stdint.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <pthread.h>
#include <stdlib.h>
#include <ctype.h>
#include <sys/sysinfo.h>
#include <signal.h>
#include <pcap.h>
/* ========================== Local includes =================================*/
#include "utils/wait_for_event.h"
/* ======================== Macro Definitions =============================== */
#if ( ipconfigETHERNET_DRIVER_FILTERS_FRAME_TYPES == 0 )
#define ipCONSIDER_FRAME_FOR_PROCESSING( pucEthernetBuffer ) eProcessBuffer
#else
#define ipCONSIDER_FRAME_FOR_PROCESSING( pucEthernetBuffer ) \
eConsiderFrameForProcessing( ( pucEthernetBuffer ) )
#endif
/* ============================== Definitions =============================== */
#define xSEND_BUFFER_SIZE 32768
#define xRECV_BUFFER_SIZE 32768
#define MAX_CAPTURE_LEN 65535
#define IP_SIZE 100
/* ================== Static Function Prototypes ============================ */
static int prvConfigureCaptureBehaviour( void );
static int prvCreateThreadSafeBuffers( void );
static void * prvLinuxPcapSendThread( void *pvParam );
static void * prvLinuxPcapRecvThread( void *pvParam );
static void prvInterruptSimulatorTask( void *pvParameters );
static void prvPrintAvailableNetworkInterfaces( pcap_if_t * pxAllNetworkInterfaces );
static pcap_if_t * prvGetAvailableNetworkInterfaces( void );
static const char * prvRemoveSpaces( char *pcBuffer,
int aBuflen,
const char *pcMessage );
static int prvOpenSelectedNetworkInterface( pcap_if_t *pxAllNetworkInterfaces );
static int prvCreateWorkerThreads( void );
static int prvSetDeviceModes( void );
static void print_hex( unsigned const char * const bin_data,
size_t len );
/* ======================== Static Global Variables ========================= */
static StreamBuffer_t *xSendBuffer = NULL;
static StreamBuffer_t *xRecvBuffer = NULL;
extern uint8_t ucMACAddress[ 6 ];
static char errbuf[ PCAP_ERRBUF_SIZE ];
static pcap_t *pxOpenedInterfaceHandle = NULL;
static struct event *pvSendEvent = NULL;
static uint32_t ulPCAPSendFailures = 0;
static BaseType_t xConfigNetworkInterfaceToUse = configNETWORK_INTERFACE_TO_USE;
static BaseType_t xInvalidInterfaceDetected = pdFALSE;
/* ======================= API Function definitions ========================= */
/*!
* @brief API call, called from reeRTOS_IP.c to initialize the capture device
* to be able to send and receive packets
* @return pdPASS if successful else pdFAIL
*/
BaseType_t xNetworkInterfaceInitialise( void )
{
BaseType_t ret = pdFAIL;
pcap_if_t *pxAllNetworkInterfaces;
/* Query the computer the simulation is being executed on to find the
network interfaces it has installed. */
pxAllNetworkInterfaces = prvGetAvailableNetworkInterfaces();
if( pxAllNetworkInterfaces != NULL )
{
prvPrintAvailableNetworkInterfaces( pxAllNetworkInterfaces );
ret = prvOpenSelectedNetworkInterface( pxAllNetworkInterfaces );
if( ret == pdPASS )
{
ret = prvCreateThreadSafeBuffers();
if( ret == pdPASS )
{
ret = prvCreateWorkerThreads();
}
}
/* The device list is no longer required. */
pcap_freealldevs( pxAllNetworkInterfaces );
}
if( ( pxOpenedInterfaceHandle != NULL ) && ( ret == pdPASS ) )
{
ret = pdPASS;
}
return ret;
}
/*!
* @brief API call, called from reeRTOS_IP.c to send a network packet over the
* selected interface
* @return pdTRUE if successful else pdFALSE
*/
BaseType_t xNetworkInterfaceOutput( NetworkBufferDescriptor_t * const pxNetworkBuffer,
BaseType_t bReleaseAfterSend )
{
size_t xSpace;
iptraceNETWORK_INTERFACE_TRANSMIT();
configASSERT( xIsCallingFromIPTask() == pdTRUE );
/* Both the length of the data being sent and the actual data being sent
are placed in the thread safe buffer used to pass data between the FreeRTOS
tasks and the pthread that sends data via the pcap library. Drop
the packet if there is insufficient space in the buffer to hold both. */
xSpace = uxStreamBufferGetSpace( xSendBuffer );
if( ( pxNetworkBuffer->xDataLength <=
( ipconfigNETWORK_MTU + ipSIZE_OF_ETH_HEADER ) ) &&
( xSpace >= ( pxNetworkBuffer->xDataLength +
sizeof( pxNetworkBuffer->xDataLength ) ) ) )
{
/* First write in the length of the data, then write in the data
itself. */
uxStreamBufferAdd( xSendBuffer,
0,
( const uint8_t * ) &( pxNetworkBuffer->xDataLength ),
sizeof( pxNetworkBuffer->xDataLength ) );
uxStreamBufferAdd( xSendBuffer,
0,
( const uint8_t * ) pxNetworkBuffer->pucEthernetBuffer,
pxNetworkBuffer->xDataLength );
}
else
{
FreeRTOS_printf( ( "xNetworkInterfaceOutput: send buffers full to store %lu\n",
pxNetworkBuffer->xDataLength ) );
}
/* Kick the Tx task in either case in case it doesn't know the buffer is
full. */
event_signal( pvSendEvent );
/* The buffer has been sent so can be released. */
if( bReleaseAfterSend != pdFALSE )
{
vReleaseNetworkBufferAndDescriptor( pxNetworkBuffer );
}
return pdPASS;
}
/* ====================== Static Function definitions ======================= */
/*!
* @brief create thread safe buffers to send/receive packets between threads
* @returns
*/
static int prvCreateThreadSafeBuffers( void )
{
int ret = pdFAIL;
/* The buffer used to pass data to be transmitted from a FreeRTOS task to
the linux thread that sends via the pcap library. */
do
{
if( xSendBuffer == NULL )
{
xSendBuffer = ( StreamBuffer_t * ) malloc( sizeof( *xSendBuffer ) - sizeof( xSendBuffer->ucArray ) + xSEND_BUFFER_SIZE + 1 );
if( xSendBuffer == NULL )
{
break;
}
configASSERT( xSendBuffer );
memset( xSendBuffer, '\0', sizeof( *xSendBuffer ) - sizeof( xSendBuffer->ucArray ) );
xSendBuffer->LENGTH = xSEND_BUFFER_SIZE + 1;
}
/* The buffer used to pass received data from the pthread that receives
via the pcap library to the FreeRTOS task. */
if( xRecvBuffer == NULL )
{
xRecvBuffer = ( StreamBuffer_t * ) malloc( sizeof( *xRecvBuffer ) - sizeof( xRecvBuffer->ucArray ) + xRECV_BUFFER_SIZE + 1 );
if( xRecvBuffer == NULL )
{
break;
}
configASSERT( xRecvBuffer );
memset( xRecvBuffer, '\0', sizeof( *xRecvBuffer ) - sizeof( xRecvBuffer->ucArray ) );
xRecvBuffer->LENGTH = xRECV_BUFFER_SIZE + 1;
}
ret = pdPASS;
} while( 0 );
return ret;
}
/*!
* @brief print network interfaces available on the system
* @param[in] pxAllNetworkInterfaces interface structure list to print
*/
static void prvPrintAvailableNetworkInterfaces( pcap_if_t * pxAllNetworkInterfaces )
{
pcap_if_t *xInterface;
int32_t lInterfaceNumber = 1;
char cBuffer[ 512 ];
if( pxAllNetworkInterfaces != NULL )
{
/* Print out the list of network interfaces. The first in the list
is interface '1', not interface '0'. */
for( xInterface = pxAllNetworkInterfaces;
xInterface != NULL; xInterface = xInterface->next )
{
/* The descriptions of the devices can be full of spaces, clean them
a little. printf() can only be used here because the network is not
up yet - so no other network tasks will be running. */
printf( "Interface %d - %s\n",
lInterfaceNumber,
prvRemoveSpaces( cBuffer, sizeof( cBuffer ), xInterface->name ) );
printf( " (%s)\n",
prvRemoveSpaces( cBuffer,
sizeof( cBuffer ),
xInterface->description ? xInterface->description :
"No description" ) );
printf( "\n" );
lInterfaceNumber++;
}
}
if( lInterfaceNumber == 1 )
{
/* The interface number was never incremented, so the above for() loop
did not execute meaning no interfaces were found. */
printf( " \nNo network interfaces were found.\n" );
pxAllNetworkInterfaces = NULL;
}
printf( "\r\nThe interface that will be opened is set by " );
printf( "\"configNETWORK_INTERFACE_TO_USE\", which\r\nshould be defined in FreeRTOSConfig.h\r\n" );
if( ( xConfigNetworkInterfaceToUse < 1L ) || ( xConfigNetworkInterfaceToUse >= lInterfaceNumber ) )
{
printf( "\r\nERROR: configNETWORK_INTERFACE_TO_USE is set to %ld, which is an invalid value.\r\n", xConfigNetworkInterfaceToUse );
printf( "Please set configNETWORK_INTERFACE_TO_USE to one of the interface numbers listed above,\r\n" );
printf( "then re-compile and re-start the application. Only Ethernet (as opposed to WiFi)\r\n" );
printf( "interfaces are supported.\r\n\r\nHALTING\r\n\r\n\r\n" );
xInvalidInterfaceDetected = pdTRUE;
if( pxAllNetworkInterfaces != NULL )
{
/* Free the device list, as no devices are going to be opened. */
pcap_freealldevs( pxAllNetworkInterfaces );
pxAllNetworkInterfaces = NULL;
}
}
else
{
printf( "Attempting to open interface number %ld.\n", xConfigNetworkInterfaceToUse );
}
}
/*!
* @brief get network interfaces from the system
* @returns the structure list containing all found devices
*/
static pcap_if_t * prvGetAvailableNetworkInterfaces( void )
{
pcap_if_t * pxAllNetworkInterfaces = NULL;
if( xInvalidInterfaceDetected == pdFALSE )
{
int ret;
ret = pcap_findalldevs( &pxAllNetworkInterfaces, errbuf );
if( ret == PCAP_ERROR )
{
FreeRTOS_printf( ( "Could not obtain a list of network interfaces\n%s\n",
errbuf ) );
pxAllNetworkInterfaces = NULL;
}
else
{
printf( "\r\n\r\nThe following network interfaces are available:\r\n\r\n" );
}
}
return pxAllNetworkInterfaces;
}
/*!
* @brief set device operation modes
* @returns pdPASS on success pdFAIL on failure
*/
static int prvSetDeviceModes()
{
int ret = pdFAIL;
/*
Open in promiscuous mode as the MAC and
IP address is going to be "simulated", and
not be the real MAC and IP address. This allows
traffic to the simulated IP address to be routed
to uIP, and traffic to the real IP address to be
routed to the Linux TCP/IP stack.
*/
FreeRTOS_debug_printf( ( "setting device modes of operation...\n" ) );
do
{
ret = pcap_set_promisc( pxOpenedInterfaceHandle, 1 );
if( ( ret != 0 ) && ( ret != PCAP_ERROR_ACTIVATED ) )
{
FreeRTOS_printf( ( "coult not activate promisuous mode\n" ) );
break;
}
ret = pcap_set_snaplen( pxOpenedInterfaceHandle,
ipTOTAL_ETHERNET_FRAME_SIZE );
if( ( ret != 0 ) && ( ret != PCAP_ERROR_ACTIVATED ) )
{
FreeRTOS_printf( ( "coult not set snaplen\n" ) );
break;
}
ret = pcap_set_timeout( pxOpenedInterfaceHandle, 200 );
if( ( ret != 0 ) && ( ret != PCAP_ERROR_ACTIVATED ) )
{
FreeRTOS_printf( ( "coult not set timeout\n" ) );
break;
}
ret = pcap_set_buffer_size( pxOpenedInterfaceHandle,
ipTOTAL_ETHERNET_FRAME_SIZE * 1100 );
if( ( ret != 0 ) && ( ret != PCAP_ERROR_ACTIVATED ) )
{
FreeRTOS_printf( ( "coult not set buffer size\n" ) );
break;
}
ret = pdPASS;
} while( 0 );
return ret;
}
/*!
* @brief open selected interface given its name
* @param [in] pucName interface name to pen
* @returns pdPASS on success pdFAIL on failure
*/
static int prvOpenInterface( const char *pucName )
{
static char pucInterfaceName[ 256 ];
int ret = pdFAIL;
if( pucName != NULL )
{
( void ) strncpy( pucInterfaceName, pucName, sizeof( pucInterfaceName ) );
pucInterfaceName[ sizeof( pucInterfaceName ) - ( size_t ) 1 ] = '\0';
FreeRTOS_debug_printf( ( "opening interface %s\n", pucInterfaceName ) );
pxOpenedInterfaceHandle = pcap_create( pucInterfaceName, errbuf );
if( pxOpenedInterfaceHandle != NULL )
{
ret = prvSetDeviceModes();
if( ret == pdPASS )
{
if( pcap_activate( pxOpenedInterfaceHandle ) == 0 )
{
/* Configure the capture filter to allow blocking reads, and to filter
out packets that are not of interest to this demo. */
ret = prvConfigureCaptureBehaviour();
}
else
{
FreeRTOS_debug_printf( ( "pcap activate error %s\n",
pcap_geterr( pxOpenedInterfaceHandle ) ) );
ret = pdFAIL;
}
}
}
else
{
FreeRTOS_printf( ( "\n%s is not supported by pcap and cannot be opened %s\n",
pucInterfaceName, errbuf ) );
}
}
else
{
FreeRTOS_printf( ( "could not open interface: name is null\n" ) );
}
return ret;
}
/*!
* @brief Open the network interface. The number of the interface to be opened is
* set by the configNETWORK_INTERFACE_TO_USE constant in FreeRTOSConfig.h
* Calling this function will set the pxOpenedInterfaceHandle variable
* If, after calling this function, pxOpenedInterfaceHandle
* is equal to NULL, then the interface could not be opened.
* @param [in] pxAllNetworkInterfaces network interface list to choose from
* @returns pdPASS on success or pdFAIL when something goes wrong
*/
static int prvOpenSelectedNetworkInterface( pcap_if_t *pxAllNetworkInterfaces )
{
pcap_if_t *pxInterface;
int32_t x;
int ret = pdFAIL;
/* Walk the list of devices until the selected device is located. */
pxInterface = pxAllNetworkInterfaces;
for( x = 0L; x < ( xConfigNetworkInterfaceToUse - 1L ); x++ )
{
pxInterface = pxInterface->next;
}
/* Open the selected interface. */
if( prvOpenInterface( pxInterface->name ) == pdPASS )
{
FreeRTOS_debug_printf( ( "Successfully opened interface number %d.\n", x + 1 ) );
ret = pdPASS;
}
else
{
FreeRTOS_printf( ( "Failed to open interface number %d.\n", x + 1 ) );
}
return ret;
}
/*!
* @brief launch 2 linux threads, one for Tx and one for Rx
* and one FreeRTOS thread that will simulate an interrupt
* and notify the tcp/ip stack of new data
* @return pdPASS on success otherwise pdFAIL
*/
static int prvCreateWorkerThreads( void )
{
pthread_t vPcapRecvThreadHandle;
pthread_t vPcapSendThreadHandle;
int ret = pdPASS;
if( pvSendEvent == NULL )
{
FreeRTOS_debug_printf( ( "Creating Threads ..\n" ) );
ret = pdFAIL;
/* Create event used to signal the pcap Tx thread. */
pvSendEvent = event_create();
do
{
/* Create the thread that handles pcap Rx. */
ret = pthread_create( &vPcapRecvThreadHandle,
NULL,
prvLinuxPcapRecvThread,
NULL );
if( ret != 0 )
{
FreeRTOS_printf( ( "pthread error %d", ret ) );
break;
}
/* Create the thread that handles pcap Tx. */
ret = pthread_create( &vPcapSendThreadHandle,
NULL,
prvLinuxPcapSendThread,
NULL );
if( ret != 0 )
{
FreeRTOS_printf( ( "pthread error %d", ret ) );
break;
}
ret = pdPASS;
} while( 0 );
/* Create a task that simulates an interrupt in a real system. This will
block waiting for packets, then send a message to the IP task when data
is available. */
if( xTaskCreate( prvInterruptSimulatorTask,
"MAC_ISR",
configMINIMAL_STACK_SIZE,
NULL,
configMAC_ISR_SIMULATOR_PRIORITY,
NULL ) != pdPASS )
{
ret = pdFAIL;
FreeRTOS_printf( ( "xTaskCreate could not create a new task\n" ) );
}
}
return ret;
}
/*!
* @brief Create the buffers used to pass packets between the FreeRTOS simulator
* and the pthreads that are handling pcap as well as the FreeRTOS task
* responsible of simulating an interrupt.
* @returns pdPASS when successful and pdFAIL when there is a failure
*/
static int prvConfigureCaptureBehaviour( void )
{
struct bpf_program xFilterCode;
uint32_t ulNetMask;
char pcap_filter[ 500 ];
int ret = pdFAIL;
FreeRTOS_debug_printf( ( "Configuring Capture behaviour\n" ) );
/* Set up a filter so only the packets of interest are passed to the IP
stack. errbuf is used for convenience to create the string. Don't
confuse this with an error message. */
sprintf( pcap_filter, "broadcast or multicast or ether host %x:%x:%x:%x:%x:%x",
ucMACAddress[ 0 ],
ucMACAddress[ 1 ],
ucMACAddress[ 2 ],
ucMACAddress[ 3 ],
ucMACAddress[ 4 ],
ucMACAddress[ 5 ] );
FreeRTOS_debug_printf( ( "pcap filter to compile: %s\n", pcap_filter ) );
ulNetMask = ( configNET_MASK3 << 24UL ) | ( configNET_MASK2 << 16UL ) | ( configNET_MASK1 << 8L ) | configNET_MASK0;
ret = pcap_compile( pxOpenedInterfaceHandle,
&xFilterCode,
pcap_filter,
1,
ulNetMask );
if( ret < 0 )
{
( void ) printf( "\nThe packet filter string is invalid %s\n",
pcap_geterr( pxOpenedInterfaceHandle ) );
}
else
{
ret = pcap_setfilter( pxOpenedInterfaceHandle, &xFilterCode );
if( ret < 0 )
{
( void ) printf( "\nAn error occurred setting the packet filter. %s\n",
pcap_geterr( pxOpenedInterfaceHandle ) );
}
else
{
ret = pdPASS;
}
/* When pcap_compile() succeeds, it allocates memory for the memory pointed to by the bpf_program struct
parameter.pcap_freecode() will free that memory. */
pcap_freecode( &xFilterCode );
}
return ret;
}
/*!
* @brief callback function called from pcap_dispatch function when new
* data arrives on the interface
* @param [in] user data sent to pcap_dispatch
* @param [in] pkt_header received packet header
* @param [in] pkt_data received packet data
* @warning this is called from a Linux thread, do not attempt any FreeRTOS calls
*/
static void pcap_callback( unsigned char *user,
const struct pcap_pkthdr *pkt_header,
const u_char *pkt_data )
{
FreeRTOS_debug_printf( ( "Receiving < =========== network callback user: %s len: %d caplen: %d\n",
user,
pkt_header->len,
pkt_header->caplen ) );
print_hex( pkt_data, pkt_header->len );
/* Pass data to the FreeRTOS simulator on a thread safe circular buffer. */
if( ( pkt_header->caplen <= ( ipconfigNETWORK_MTU + ipSIZE_OF_ETH_HEADER ) ) &&
( uxStreamBufferGetSpace( xRecvBuffer ) >= ( ( ( size_t ) pkt_header->caplen ) + sizeof( *pkt_header ) ) ) )
{
uxStreamBufferAdd( xRecvBuffer, 0, ( const uint8_t * ) pkt_header, sizeof( *pkt_header ) );
uxStreamBufferAdd( xRecvBuffer, 0, ( const uint8_t * ) pkt_data, ( size_t ) pkt_header->caplen );
}
}
/*!
* @brief infinite loop pthread to read from pcap
* @param [in] pvParam not used
* @returns NULL
* @warning this is called from a Linux thread, do not attempt any FreeRTOS calls
* @remarks This function disables signal, to prevent it from being put into
* sleep byt the posix port
*/
static void * prvLinuxPcapRecvThread( void *pvParam )
{
int ret;
( void ) pvParam;
/* Disable signals to this thread since this is a Linux pthread to be able to
* printf and other blocking operations without being interruped and put in
* suspension mode by the linux port signals
*/
sigset_t set;
sigfillset( &set );
pthread_sigmask( SIG_SETMASK, &set, NULL );
for( ; ; )
{
ret = pcap_dispatch( pxOpenedInterfaceHandle, 1,
pcap_callback, ( u_char * ) "mydata" );
if( ret == -1 )
{
FreeRTOS_printf( ( "pcap_dispatch error received: %s\n",
pcap_geterr( pxOpenedInterfaceHandle ) ) );
}
}
return NULL;
}
/*!
* @brief Infinite loop thread that waits for events when there is data
* available then sends the data on the interface
* @param [in] pvParam not used
* @returns NULL
* @warning this is called from a Linux thread, do not attempt any FreeRTOS calls
*/
static void * prvLinuxPcapSendThread( void *pvParam )
{
size_t xLength;
uint8_t ucBuffer[ ipconfigNETWORK_MTU + ipSIZE_OF_ETH_HEADER ];
const time_t xMaxMSToWait = 1000;
( void ) pvParam;
/* disable signals to avoid treating this thread as a FreeRTOS task and puting
* it to sleep by the scheduler */
sigset_t set;
sigfillset( &set );
pthread_sigmask( SIG_SETMASK, &set, NULL );
for( ; ; )
{
/* Wait until notified of something to send. */
event_wait_timed( pvSendEvent, xMaxMSToWait );
/* Is there more than the length value stored in the circular buffer
used to pass data from the FreeRTOS simulator into this pthread?*/
while( uxStreamBufferGetSize( xSendBuffer ) > sizeof( xLength ) )
{
uxStreamBufferGet( xSendBuffer, 0, ( uint8_t * ) &xLength, sizeof( xLength ), pdFALSE );
uxStreamBufferGet( xSendBuffer, 0, ( uint8_t * ) ucBuffer, xLength, pdFALSE );
FreeRTOS_debug_printf( ( "Sending ========== > data pcap_sendpadcket %lu\n", xLength ) );
print_hex( ucBuffer, xLength );
if( pcap_sendpacket( pxOpenedInterfaceHandle, ucBuffer, xLength ) != 0 )
{
FreeRTOS_printf( ( "pcap_sendpackeet: send failed %d\n", ulPCAPSendFailures ) );
ulPCAPSendFailures++;
}
}
}
return NULL;
}
/*!
* @brief FreeRTOS infinite loop thread that simulates a network interrupt to notify the
* network stack of the presence of new data
* @param [in] pvParameters not used
*/
static void prvInterruptSimulatorTask( void *pvParameters )
{
struct pcap_pkthdr xHeader;
static struct pcap_pkthdr *pxHeader;
const uint8_t *pucPacketData;
uint8_t ucRecvBuffer[ ipconfigNETWORK_MTU + ipSIZE_OF_ETH_HEADER ];
NetworkBufferDescriptor_t *pxNetworkBuffer;
IPStackEvent_t xRxEvent = { eNetworkRxEvent, NULL };
eFrameProcessingResult_t eResult;
/* Remove compiler warnings about unused parameters. */
( void ) pvParameters;
for( ; ; )
{
/* Does the circular buffer used to pass data from the pthread thread that
handles pacap Rx into the FreeRTOS simulator contain another packet? */
if( uxStreamBufferGetSize( xRecvBuffer ) > sizeof( xHeader ) )
{
/* Get the next packet. */
uxStreamBufferGet( xRecvBuffer, 0, ( uint8_t * ) &xHeader, sizeof( xHeader ), pdFALSE );
uxStreamBufferGet( xRecvBuffer, 0, ( uint8_t * ) ucRecvBuffer, ( size_t ) xHeader.len, pdFALSE );
pucPacketData = ucRecvBuffer;
pxHeader = &xHeader;
iptraceNETWORK_INTERFACE_RECEIVE();
/* Check for minimal size. */
if( pxHeader->len >= sizeof( EthernetHeader_t ) )
{
eResult = ipCONSIDER_FRAME_FOR_PROCESSING( pucPacketData );
}
else
{
eResult = eReleaseBuffer;
}
if( eResult == eProcessBuffer )
{
/* Will the data fit into the frame buffer? */
if( pxHeader->len <= ipTOTAL_ETHERNET_FRAME_SIZE )
{
/* Obtain a buffer into which the data can be placed. This
is only an interrupt simulator, not a real interrupt, so it
is ok to call the task level function here, but note that
some buffer implementations cannot be called from a real
interrupt. */
pxNetworkBuffer = pxGetNetworkBufferWithDescriptor( pxHeader->len, 0 );
if( pxNetworkBuffer != NULL )
{
memcpy( pxNetworkBuffer->pucEthernetBuffer, pucPacketData, pxHeader->len );
pxNetworkBuffer->xDataLength = ( size_t ) pxHeader->len;
#if ( niDISRUPT_PACKETS == 1 )
{
pxNetworkBuffer = vRxFaultInjection( pxNetworkBuffer, pucPacketData );
}
#endif /* niDISRUPT_PACKETS */
if( pxNetworkBuffer != NULL )
{
xRxEvent.pvData = ( void * ) pxNetworkBuffer;
/* Data was received and stored. Send a message to
the IP task to let it know. */
if( xSendEventStructToIPTask( &xRxEvent, ( TickType_t ) 0 ) == pdFAIL )
{
/* The buffer could not be sent to the stack so
must be released again. This is only an
interrupt simulator, not a real interrupt, so it
is ok to use the task level function here, but
note no all buffer implementations will allow
this function to be executed from a real
interrupt. */
vReleaseNetworkBufferAndDescriptor( pxNetworkBuffer );
iptraceETHERNET_RX_EVENT_LOST();
}
}
else
{
/* The packet was already released or stored inside
vRxFaultInjection(). Don't release it here. */
}
}
else
{
iptraceETHERNET_RX_EVENT_LOST();
}
}
else
{
/* Log that a packet was dropped because it would have
overflowed the buffer, but there may be more buffers to
process. */
}
}
}
else
{
/* There is no real way of simulating an interrupt. Make sure
other tasks can run. */
vTaskDelay( configWINDOWS_MAC_INTERRUPT_SIMULATOR_DELAY );
}
}
}
/*!
* @brief remove spacces from pcMessage into pcBuffer
* @param [out] pcBuffer buffer to fill up
* @param [in] aBuflen length of pcBuffer
* @param [in] pcMessage original message
* @returns
*/
static const char * prvRemoveSpaces( char *pcBuffer,
int aBuflen,
const char *pcMessage )
{
char *pcTarget = pcBuffer;
/* Utility function used to formap messages being printed only. */
while( ( *pcMessage != 0 ) && ( pcTarget < ( &pcBuffer[ aBuflen - 1 ] ) ) )
{
*( pcTarget++ ) = *pcMessage;
if( isspace( *pcMessage ) != pdFALSE )
{
while( isspace( *pcMessage ) != pdFALSE )
{
pcMessage++;
}
}
else
{
pcMessage++;
}
}
*pcTarget = '\0';
return pcBuffer;
}
/*!
* @brief print binary packet in hex
* @param [in] bin_daa data to print
* @param [in] len length of the data
*/
static void print_hex( unsigned const char * const bin_data,
size_t len )
/*static void print_hex(unsigned char *bin_data, size_t len) */
{
size_t i;
for( i = 0; i < len; ++i )
{
FreeRTOS_debug_printf( ( "%.2X ", bin_data[ i ] ) );
}
FreeRTOS_debug_printf( ( "\n" ) );
}

66
FreeRTOS/Demo/Posix_GCC/src/FreeRTOSConfig.h
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@ -118,7 +118,7 @@ functions anyway. */
#define sbSEND_COMPLETED( pxStreamBuffer ) vGenerateCoreBInterrupt( pxStreamBuffer )
#endif /* configINCLUDE_MESSAGE_BUFFER_AMP_DEMO */
extern void vAssertCalled( unsigned long ulLine, const char * const pcFileName );
extern void vAssertCalled( const char * const pcFileName, unsigned long ulLine );
/* projCOVERAGE_TEST should be defined on the command line so this file can be
used with multiple project configurations. If it is
@ -146,7 +146,7 @@ used with multiple project configurations. If it is
configASSERT() when performing code coverage tests though, as it is not
intended to asserts() to fail, some some code is intended not to run if no
errors are present. */
#define configASSERT( x ) if( ( x ) == 0 ) vAssertCalled( __LINE__, __FILE__ )
#define configASSERT( x ) if( ( x ) == 0 ) vAssertCalled( __FILE__, __LINE__ )
#define configUSE_MALLOC_FAILED_HOOK 1
@ -154,5 +154,67 @@ used with multiple project configurations. If it is
#include "trcRecorder.h"
#endif
/* networking definitions */
#define configMAC_ISR_SIMULATOR_PRIORITY ( configMAX_PRIORITIES - 1 )
#define ipconfigUSE_NETWORK_EVENT_HOOK 1
//#define ipconfigSOCK_DEFAULT_RECEIVE_BLOCK_TIME pdMS_TO_TICKS(5000)
#define configNETWORK_INTERFACE_TO_USE 1L
/* The address of an echo server that will be used by the two demo echo client
tasks.
http://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/TCP_Echo_Clients.html
http://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/UDP_Echo_Clients.html */
#define configECHO_SERVER_ADDR0 172
#define configECHO_SERVER_ADDR1 19
#define configECHO_SERVER_ADDR2 195
#define configECHO_SERVER_ADDR3 36
/* Default MAC address configuration. The demo creates a virtual network
connection that uses this MAC address by accessing the raw Ethernet/WiFi data
to and from a real network connection on the host PC. See the
configNETWORK_INTERFACE_TO_USE definition above for information on how to
configure the real network connection to use. */
#define configMAC_ADDR0 0x00
#define configMAC_ADDR1 0x11
#define configMAC_ADDR2 0x22
#define configMAC_ADDR3 0x33
#define configMAC_ADDR4 0x44
#define configMAC_ADDR5 0x41
/* Default IP address configuration. Used in ipconfigUSE_DNS is set to 0, or
ipconfigUSE_DNS is set to 1 but a DNS server cannot be contacted. */
#define configIP_ADDR0 172
#define configIP_ADDR1 19
#define configIP_ADDR2 195
#define configIP_ADDR3 37
/* Default gateway IP address configuration. Used in ipconfigUSE_DNS is set to
0, or ipconfigUSE_DNS is set to 1 but a DNS server cannot be contacted. */
#define configGATEWAY_ADDR0 172
#define configGATEWAY_ADDR1 19
#define configGATEWAY_ADDR2 192
#define configGATEWAY_ADDR3 1
/* Default DNS server configuration. OpenDNS addresses are 208.67.222.222 and
208.67.220.220. Used in ipconfigUSE_DNS is set to 0, or ipconfigUSE_DNS is set
to 1 but a DNS server cannot be contacted.*/
#define configDNS_SERVER_ADDR0 10
#define configDNS_SERVER_ADDR1 4
#define configDNS_SERVER_ADDR2 4
#define configDNS_SERVER_ADDR3 10
/* Default netmask configuration. Used in ipconfigUSE_DNS is set to 0, or
ipconfigUSE_DNS is set to 1 but a DNS server cannot be contacted. */
#define configNET_MASK0 255
#define configNET_MASK1 255
#define configNET_MASK2 240
#define configNET_MASK3 0
/* The UDP port to which print messages are sent. */
#define configPRINT_PORT ( 15000 )
#endif /* FREERTOS_CONFIG_H */

307
FreeRTOS/Demo/Posix_GCC/src/FreeRTOSIPConfig.h
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@ -0,0 +1,307 @@
/*
* FreeRTOS Kernel V10.3.0
* 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!
*/
/*****************************************************************************
*
* See the following URL for configuration information.
* http://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/TCP_IP_Configuration.html
*
*****************************************************************************/
#ifndef FREERTOS_IP_CONFIG_H
#define FREERTOS_IP_CONFIG_H
/* Prototype for the function used to print out. In this case it prints to the
console before the network is connected then a UDP port after the network has
connected. */
extern void vLoggingPrintf( const char *pcFormatString, ... );
/* Set to 1 to print out debug messages. If ipconfigHAS_DEBUG_PRINTF is set to
1 then FreeRTOS_debug_printf should be defined to the function used to print
out the debugging messages. */
#define ipconfigHAS_DEBUG_PRINTF 1
#if( ipconfigHAS_DEBUG_PRINTF == 1 )
#define FreeRTOS_debug_printf(X) vLoggingPrintf X
#endif
/* Set to 1 to print out non debugging messages, for example the output of the
FreeRTOS_netstat() command, and ping replies. If ipconfigHAS_PRINTF is set to 1
then FreeRTOS_printf should be set to the function used to print out the
messages. */
#define ipconfigHAS_PRINTF 1
#if( ipconfigHAS_PRINTF == 1 )
#define FreeRTOS_printf(X) vLoggingPrintf X
#endif
/* Define the byte order of the target MCU (the MCU FreeRTOS+TCP is executing
on). Valid options are pdFREERTOS_BIG_ENDIAN and pdFREERTOS_LITTLE_ENDIAN. */
#define ipconfigBYTE_ORDER pdFREERTOS_LITTLE_ENDIAN
/* If the network card/driver includes checksum offloading (IP/TCP/UDP checksums)
then set ipconfigDRIVER_INCLUDED_RX_IP_CHECKSUM to 1 to prevent the software
stack repeating the checksum calculations. */
#define ipconfigDRIVER_INCLUDED_RX_IP_CHECKSUM 1
/* Several API's will block until the result is known, or the action has been
performed, for example FreeRTOS_send() and FreeRTOS_recv(). The timeouts can be
set per socket, using setsockopt(). If not set, the times below will be
used as defaults. */
#define ipconfigSOCK_DEFAULT_RECEIVE_BLOCK_TIME ( 5000 )
#define ipconfigSOCK_DEFAULT_SEND_BLOCK_TIME ( 5000 )
/* Include support for LLMNR: Link-local Multicast Name Resolution
(non-Microsoft) */
#define ipconfigUSE_LLMNR ( 1 )
/* Include support for NBNS: NetBIOS Name Service (Microsoft) */
#define ipconfigUSE_NBNS ( 1 )
/* Include support for DNS caching. For TCP, having a small DNS cache is very
useful. When a cache is present, ipconfigDNS_REQUEST_ATTEMPTS can be kept low
and also DNS may use small timeouts. If a DNS reply comes in after the DNS
socket has been destroyed, the result will be stored into the cache. The next
call to FreeRTOS_gethostbyname() will return immediately, without even creating
a socket. */
#define ipconfigUSE_DNS_CACHE ( 1 )
#define ipconfigDNS_CACHE_NAME_LENGTH ( 16 )
#define ipconfigDNS_CACHE_ENTRIES ( 4 )
#define ipconfigDNS_REQUEST_ATTEMPTS ( 2 )
/* The IP stack executes it its own task (although any application task can make
use of its services through the published sockets API). ipconfigUDP_TASK_PRIORITY
sets the priority of the task that executes the IP stack. The priority is a
standard FreeRTOS task priority so can take any value from 0 (the lowest
priority) to (configMAX_PRIORITIES - 1) (the highest priority).
configMAX_PRIORITIES is a standard FreeRTOS configuration parameter defined in
FreeRTOSConfig.h, not FreeRTOSIPConfig.h. Consideration needs to be given as to
the priority assigned to the task executing the IP stack relative to the
priority assigned to tasks that use the IP stack. */
#define ipconfigIP_TASK_PRIORITY ( configMAX_PRIORITIES - 2 )
/* The size, in words (not bytes), of the stack allocated to the FreeRTOS+TCP
task. This setting is less important when the FreeRTOS Win32 simulator is used
as the Win32 simulator only stores a fixed amount of information on the task
stack. FreeRTOS includes optional stack overflow detection, see:
http://www.freertos.org/Stacks-and-stack-overflow-checking.html */
#define ipconfigIP_TASK_STACK_SIZE_WORDS ( configMINIMAL_STACK_SIZE * 5 )
/* ipconfigRAND32() is called by the IP stack to generate random numbers for
things such as a DHCP transaction number or initial sequence number. Random
number generation is performed via this macro to allow applications to use their
own random number generation method. For example, it might be possible to
generate a random number by sampling noise on an analogue input. */
extern UBaseType_t uxRand();
#define ipconfigRAND32() uxRand()
/* If ipconfigUSE_NETWORK_EVENT_HOOK is set to 1 then FreeRTOS+TCP will call the
network event hook at the appropriate times. If ipconfigUSE_NETWORK_EVENT_HOOK
is not set to 1 then the network event hook will never be called. See
http://www.FreeRTOS.org/FreeRTOS-Plus/FreeRTOS_Plus_UDP/API/vApplicationIPNetworkEventHook.shtml
*/
#define ipconfigUSE_NETWORK_EVENT_HOOK 1
/* Sockets have a send block time attribute. If FreeRTOS_sendto() is called but
a network buffer cannot be obtained then the calling task is held in the Blocked
state (so other tasks can continue to executed) until either a network buffer
becomes available or the send block time expires. If the send block time expires
then the send operation is aborted. The maximum allowable send block time is
capped to the value set by ipconfigMAX_SEND_BLOCK_TIME_TICKS. Capping the
maximum allowable send block time prevents prevents a deadlock occurring when
all the network buffers are in use and the tasks that process (and subsequently
free) the network buffers are themselves blocked waiting for a network buffer.
ipconfigMAX_SEND_BLOCK_TIME_TICKS is specified in RTOS ticks. A time in
milliseconds can be converted to a time in ticks by dividing the time in
milliseconds by portTICK_PERIOD_MS. */
#define ipconfigUDP_MAX_SEND_BLOCK_TIME_TICKS ( 5000 / portTICK_PERIOD_MS )
/* If ipconfigUSE_DHCP is 1 then FreeRTOS+TCP will attempt to retrieve an IP
address, netmask, DNS server address and gateway address from a DHCP server. If
ipconfigUSE_DHCP is 0 then FreeRTOS+TCP will use a static IP address. The
stack will revert to using the static IP address even when ipconfigUSE_DHCP is
set to 1 if a valid configuration cannot be obtained from a DHCP server for any
reason. The static configuration used is that passed into the stack by the
FreeRTOS_IPInit() function call. */
#define ipconfigUSE_DHCP 0
/* When ipconfigUSE_DHCP is set to 1, DHCP requests will be sent out at
increasing time intervals until either a reply is received from a DHCP server
and accepted, or the interval between transmissions reaches
ipconfigMAXIMUM_DISCOVER_TX_PERIOD. The IP stack will revert to using the
static IP address passed as a parameter to FreeRTOS_IPInit() if the
re-transmission time interval reaches ipconfigMAXIMUM_DISCOVER_TX_PERIOD without
a DHCP reply being received. */
#define ipconfigMAXIMUM_DISCOVER_TX_PERIOD ( 120000 / portTICK_PERIOD_MS )
/* The ARP cache is a table that maps IP addresses to MAC addresses. The IP
stack can only send a UDP message to a remove IP address if it knowns the MAC
address associated with the IP address, or the MAC address of the router used to
contact the remote IP address. When a UDP message is received from a remote IP
address the MAC address and IP address are added to the ARP cache. When a UDP
message is sent to a remote IP address that does not already appear in the ARP
cache then the UDP message is replaced by a ARP message that solicits the
required MAC address information. ipconfigARP_CACHE_ENTRIES defines the maximum
number of entries that can exist in the ARP table at any one time. */
#define ipconfigARP_CACHE_ENTRIES 6
/* ARP requests that do not result in an ARP response will be re-transmitted a
maximum of ipconfigMAX_ARP_RETRANSMISSIONS times before the ARP request is
aborted. */
#define ipconfigMAX_ARP_RETRANSMISSIONS ( 5 )
/* ipconfigMAX_ARP_AGE defines the maximum time between an entry in the ARP
table being created or refreshed and the entry being removed because it is stale.
New ARP requests are sent for ARP cache entries that are nearing their maximum
age. ipconfigMAX_ARP_AGE is specified in tens of seconds, so a value of 150 is
equal to 1500 seconds (or 25 minutes). */
#define ipconfigMAX_ARP_AGE 150
/* Implementing FreeRTOS_inet_addr() necessitates the use of string handling
routines, which are relatively large. To save code space the full
FreeRTOS_inet_addr() implementation is made optional, and a smaller and faster
alternative called FreeRTOS_inet_addr_quick() is provided. FreeRTOS_inet_addr()
takes an IP in decimal dot format (for example, "192.168.0.1") as its parameter.
FreeRTOS_inet_addr_quick() takes an IP address as four separate numerical octets
(for example, 192, 168, 0, 1) as its parameters. If
ipconfigINCLUDE_FULL_INET_ADDR is set to 1 then both FreeRTOS_inet_addr() and
FreeRTOS_indet_addr_quick() are available. If ipconfigINCLUDE_FULL_INET_ADDR is
not set to 1 then only FreeRTOS_indet_addr_quick() is available. */
#define ipconfigINCLUDE_FULL_INET_ADDR 1
/* ipconfigNUM_NETWORK_BUFFER_DESCRIPTORS defines the total number of network buffer that
are available to the IP stack. The total number of network buffers is limited
to ensure the total amount of RAM that can be consumed by the IP stack is capped
to a pre-determinable value. */
#define ipconfigNUM_NETWORK_BUFFER_DESCRIPTORS 60
/* A FreeRTOS queue is used to send events from application tasks to the IP
stack. ipconfigEVENT_QUEUE_LENGTH sets the maximum number of events that can
be queued for processing at any one time. The event queue must be a minimum of
5 greater than the total number of network buffers. */
#define ipconfigEVENT_QUEUE_LENGTH ( ipconfigNUM_NETWORK_BUFFER_DESCRIPTORS + 5 )
/* The address of a socket is the combination of its IP address and its port
number. FreeRTOS_bind() is used to manually allocate a port number to a socket
(to 'bind' the socket to a port), but manual binding is not normally necessary
for client sockets (those sockets that initiate outgoing connections rather than
wait for incoming connections on a known port number). If
ipconfigALLOW_SOCKET_SEND_WITHOUT_BIND is set to 1 then calling
FreeRTOS_sendto() on a socket that has not yet been bound will result in the IP
stack automatically binding the socket to a port number from the range
socketAUTO_PORT_ALLOCATION_START_NUMBER to 0xffff. If
ipconfigALLOW_SOCKET_SEND_WITHOUT_BIND is set to 0 then calling FreeRTOS_sendto()
on a socket that has not yet been bound will result in the send operation being
aborted. */
#define ipconfigALLOW_SOCKET_SEND_WITHOUT_BIND 1
/* Defines the Time To Live (TTL) values used in outgoing UDP packets. */
#define ipconfigUDP_TIME_TO_LIVE 128
#define ipconfigTCP_TIME_TO_LIVE 128 /* also defined in FreeRTOSIPConfigDefaults.h */
/* USE_TCP: Use TCP and all its features */
#define ipconfigUSE_TCP ( 1 )
/* USE_WIN: Let TCP use windowing mechanism. */
#define ipconfigUSE_TCP_WIN ( 1 )
/* The MTU is the maximum number of bytes the payload of a network frame can
contain. For normal Ethernet V2 frames the maximum MTU is 1500. Setting a
lower value can save RAM, depending on the buffer management scheme used. If
ipconfigCAN_FRAGMENT_OUTGOING_PACKETS is 1 then (ipconfigNETWORK_MTU - 28) must
be divisible by 8. */
#define ipconfigNETWORK_MTU 1200
/* Set ipconfigUSE_DNS to 1 to include a basic DNS client/resolver. DNS is used
through the FreeRTOS_gethostbyname() API function. */
#define ipconfigUSE_DNS 1
/* If ipconfigREPLY_TO_INCOMING_PINGS is set to 1 then the IP stack will
generate replies to incoming ICMP echo (ping) requests. */
#define ipconfigREPLY_TO_INCOMING_PINGS 1
/* If ipconfigSUPPORT_OUTGOING_PINGS is set to 1 then the
FreeRTOS_SendPingRequest() API function is available. */
#define ipconfigSUPPORT_OUTGOING_PINGS 0
/* If ipconfigSUPPORT_SELECT_FUNCTION is set to 1 then the FreeRTOS_select()
(and associated) API function is available. */
#define ipconfigSUPPORT_SELECT_FUNCTION 1
/* If ipconfigFILTER_OUT_NON_ETHERNET_II_FRAMES is set to 1 then Ethernet frames
that are not in Ethernet II format will be dropped. This option is included for
potential future IP stack developments. */
#define ipconfigFILTER_OUT_NON_ETHERNET_II_FRAMES 1
/* If ipconfigETHERNET_DRIVER_FILTERS_FRAME_TYPES is set to 1 then it is the
responsibility of the Ethernet interface to filter out packets that are of no
interest. If the Ethernet interface does not implement this functionality, then
set ipconfigETHERNET_DRIVER_FILTERS_FRAME_TYPES to 0 to have the IP stack
perform the filtering instead (it is much less efficient for the stack to do it
because the packet will already have been passed into the stack). If the
Ethernet driver does all the necessary filtering in hardware then software
filtering can be removed by using a value other than 1 or 0. */
#define ipconfigETHERNET_DRIVER_FILTERS_FRAME_TYPES 1
/* The windows simulator cannot really simulate MAC interrupts, and needs to
block occasionally to allow other tasks to run. */
#define configWINDOWS_MAC_INTERRUPT_SIMULATOR_DELAY ( 20 / portTICK_PERIOD_MS )
/* Advanced only: in order to access 32-bit fields in the IP packets with
32-bit memory instructions, all packets will be stored 32-bit-aligned, plus 16-bits.
This has to do with the contents of the IP-packets: all 32-bit fields are
32-bit-aligned, plus 16-bit(!) */
#define ipconfigPACKET_FILLER_SIZE 2
/* Define the size of the pool of TCP window descriptors. On the average, each
TCP socket will use up to 2 x 6 descriptors, meaning that it can have 2 x 6
outstanding packets (for Rx and Tx). When using up to 10 TP sockets
simultaneously, one could define TCP_WIN_SEG_COUNT as 120. */
#define ipconfigTCP_WIN_SEG_COUNT 240
/* Each TCP socket has a circular buffers for Rx and Tx, which have a fixed
maximum size. Define the size of Rx buffer for TCP sockets. */
#define ipconfigTCP_RX_BUFFER_LENGTH ( 1000 )
/* Define the size of Tx buffer for TCP sockets. */
#define ipconfigTCP_TX_BUFFER_LENGTH ( 1000 )
/* When using call-back handlers, the driver may check if the handler points to
real program memory (RAM or flash) or just has a random non-zero value. */
#define ipconfigIS_VALID_PROG_ADDRESS(x) ( (x) != NULL )
/* Include support for TCP hang protection. All sockets in a connecting or
disconnecting stage will timeout after a period of non-activity. */
#define ipconfigTCP_HANG_PROTECTION ( 1 )
#define ipconfigTCP_HANG_PROTECTION_TIME ( 30 )
/* Include support for TCP keep-alive messages. */
#define ipconfigTCP_KEEP_ALIVE ( 1 )
#define ipconfigTCP_KEEP_ALIVE_INTERVAL ( 20 ) /* in seconds */
#define portINLINE __inline
#endif /* FREERTOS_IP_CONFIG_H */

26
FreeRTOS/Demo/Posix_GCC/src/SConscript
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@ -25,14 +25,19 @@ Import("env")
env.Append(CPPPATH = [
".",
"./utils",
"FreeRTOS/Source/include",
"FreeRTOS/Source/portable/ThirdParty/GCC/Posix",
"FreeRTOS/Demo/Common/include",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-Trace/Include",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/portable/NetworkInterface/linux/",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/include/",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/portable/Compiler/GCC/",
])
env.Append(LIBS = [
"pthread",
"pcap",
])
src = [
@ -40,7 +45,11 @@ src = [
"main.c",
"main_blinky.c",
"main_full.c",
"main_networking.c",
"run-time-stats-utils.c",
"utils/wait_for_event.c",
"SimpleTCPEchoServer.c",
"TCPEchoClient_SingleTasks.c",
# FreeRTOS kernel
"FreeRTOS/Source/event_groups.c",
@ -56,6 +65,19 @@ src = [
# Posix port.
"FreeRTOS/Source/portable/ThirdParty/GCC/Posix/port.c",
# FreeRTOS TCP
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/FreeRTOS_DNS.c",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/FreeRTOS_DHCP.c",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/FreeRTOS_ARP.c",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/FreeRTOS_TCP_WIN.c",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/FreeRTOS_Stream_Buffer.c",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/portable/BufferManagement/BufferAllocation_2.c",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/FreeRTOS_IP.c",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/FreeRTOS_TCP_IP.c",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/FreeRTOS_UDP_IP.c",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/FreeRTOS_Sockets.c",
"FreeRTOS-Plus/Source/FreeRTOS-Plus-TCP/portable/NetworkInterface/linux/NetworkInterface.c",
# Demo library.
"FreeRTOS/Demo/Common/Minimal/AbortDelay.c",
"FreeRTOS/Demo/Common/Minimal/BlockQ.c",
@ -92,10 +114,14 @@ if GetOption("coverage"):
env.Append(CFLAGS = [
"-fprofile-arcs",
"-ftest-coverage",
"-ggdb3",
"-Og",
])
env.Append(LINKFLAGS = [
"-fprofile-arcs",
"-ftest-coverage",
"-ggdb3",
"-Og",
])
src += [

288
FreeRTOS/Demo/Posix_GCC/src/SimpleTCPEchoServer.c
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@ -0,0 +1,288 @@
/*
FreeRTOS V9.0.0 - Copyright (C) 2016 Real Time Engineers Ltd.
All rights reserved
VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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 on the following
link: http://www.freertos.org/a00114.html
***************************************************************************
* *
* FreeRTOS provides completely free yet professionally developed, *
* robust, strictly quality controlled, supported, and cross *
* platform software that is more than just the market leader, it *
* is the industry's de facto standard. *
* *
* Help yourself get started quickly while simultaneously helping *
* to support the FreeRTOS project by purchasing a FreeRTOS *
* tutorial book, reference manual, or both: *
* http://www.FreeRTOS.org/Documentation *
* *
***************************************************************************
http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
the FAQ page "My application does not run, what could be wrong?". Have you
defined configASSERT()?
http://www.FreeRTOS.org/support - In return for receiving this top quality
embedded software for free we request you assist our global community by
participating in the support forum.
http://www.FreeRTOS.org/training - Investing in training allows your team to
be as productive as possible as early as possible. Now you can receive
FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
Ltd, and the world's leading authority on the world's leading RTOS.
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.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.
http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
licenses offer ticketed support, indemnification and commercial 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!
*/
/*
* FreeRTOS tasks are used with FreeRTOS+TCP to create a TCP echo server on the
* standard echo port number (7).
*
* See the following web page for essential demo usage and configuration
* details:
* http://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/TCP_Echo_Server.html
*/
/* Standard includes. */
#include <stdint.h>
#include <stdio.h>
/* FreeRTOS includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "semphr.h"
/* FreeRTOS+TCP includes. */
#include "FreeRTOS_IP.h"
#include "FreeRTOS_Sockets.h"
/* Remove the whole file if FreeRTOSIPConfig.h is set to exclude TCP. */
#if( ipconfigUSE_TCP == 1 )
/* The maximum time to wait for a closing socket to close. */
#define tcpechoSHUTDOWN_DELAY ( pdMS_TO_TICKS( 5000 ) )
/* The standard echo port number. */
#define tcpechoPORT_NUMBER 7
/* If ipconfigUSE_TCP_WIN is 1 then the Tx sockets will use a buffer size set by
ipconfigTCP_TX_BUFFER_LENGTH, and the Tx window size will be
configECHO_SERVER_TX_WINDOW_SIZE times the buffer size. Note
ipconfigTCP_TX_BUFFER_LENGTH is set in FreeRTOSIPConfig.h as it is a standard TCP/IP
stack constant, whereas configECHO_SERVER_TX_WINDOW_SIZE is set in
FreeRTOSConfig.h as it is a demo application constant. */
#ifndef configECHO_SERVER_TX_WINDOW_SIZE
#define configECHO_SERVER_TX_WINDOW_SIZE 2
#endif
/* If ipconfigUSE_TCP_WIN is 1 then the Rx sockets will use a buffer size set by
ipconfigTCP_RX_BUFFER_LENGTH, and the Rx window size will be
configECHO_SERVER_RX_WINDOW_SIZE times the buffer size. Note
ipconfigTCP_RX_BUFFER_LENGTH is set in FreeRTOSIPConfig.h as it is a standard TCP/IP
stack constant, whereas configECHO_SERVER_RX_WINDOW_SIZE is set in
FreeRTOSConfig.h as it is a demo application constant. */
#ifndef configECHO_SERVER_RX_WINDOW_SIZE
#define configECHO_SERVER_RX_WINDOW_SIZE 2
#endif
/*-----------------------------------------------------------*/
/*
* Uses FreeRTOS+TCP to listen for incoming echo connections, creating a task
* to handle each connection.
*/
static void prvConnectionListeningTask( void *pvParameters );
/*
* Created by the connection listening task to handle a single connection.
*/
static void prvServerConnectionInstance( void *pvParameters );
/*-----------------------------------------------------------*/
/* Stores the stack size passed into vStartSimpleTCPServerTasks() so it can be
reused when the server listening task creates tasks to handle connections. */
static uint16_t usUsedStackSize = 0;
/*-----------------------------------------------------------*/
void vStartSimpleTCPServerTasks( uint16_t usStackSize, UBaseType_t uxPriority )
{
/* Create the TCP echo server. */
xTaskCreate( prvConnectionListeningTask, "ServerListener", usStackSize, NULL, uxPriority + 1, NULL );
/* Remember the requested stack size so it can be re-used by the server
listening task when it creates tasks to handle connections. */
usUsedStackSize = usStackSize;
}
/*-----------------------------------------------------------*/
static void prvConnectionListeningTask( void *pvParameters )
{
struct freertos_sockaddr xClient, xBindAddress;
Socket_t xListeningSocket, xConnectedSocket;
socklen_t xSize = sizeof( xClient );
static const TickType_t xReceiveTimeOut = portMAX_DELAY;
const BaseType_t xBacklog = 20;
#if( ipconfigUSE_TCP_WIN == 1 )
WinProperties_t xWinProps;
/* Fill in the buffer and window sizes that will be used by the socket. */
xWinProps.lTxBufSize = ipconfigTCP_TX_BUFFER_LENGTH;
xWinProps.lTxWinSize = configECHO_SERVER_TX_WINDOW_SIZE;
xWinProps.lRxBufSize = ipconfigTCP_RX_BUFFER_LENGTH;
xWinProps.lRxWinSize = configECHO_SERVER_RX_WINDOW_SIZE;
#endif /* ipconfigUSE_TCP_WIN */
/* Just to prevent compiler warnings. */
( void ) pvParameters;
/* Attempt to open the socket. */
xListeningSocket = FreeRTOS_socket( FREERTOS_AF_INET, FREERTOS_SOCK_STREAM, FREERTOS_IPPROTO_TCP );
configASSERT( xListeningSocket != FREERTOS_INVALID_SOCKET );
/* Set a time out so accept() will just wait for a connection. */
FreeRTOS_setsockopt( xListeningSocket, 0, FREERTOS_SO_RCVTIMEO, &xReceiveTimeOut, sizeof( xReceiveTimeOut ) );
/* Set the window and buffer sizes. */
#if( ipconfigUSE_TCP_WIN == 1 )
{
FreeRTOS_setsockopt( xListeningSocket, 0, FREERTOS_SO_WIN_PROPERTIES, ( void * ) &xWinProps, sizeof( xWinProps ) );
}
#endif /* ipconfigUSE_TCP_WIN */
/* Bind the socket to the port that the client task will send to, then
listen for incoming connections. */
xBindAddress.sin_port = tcpechoPORT_NUMBER;
xBindAddress.sin_port = FreeRTOS_htons( xBindAddress.sin_port );
FreeRTOS_bind( xListeningSocket, &xBindAddress, sizeof( xBindAddress ) );
FreeRTOS_listen( xListeningSocket, xBacklog );
for( ;; )
{
/* Wait for a client to connect. */
xConnectedSocket = FreeRTOS_accept( xListeningSocket, &xClient, &xSize );
configASSERT( xConnectedSocket != FREERTOS_INVALID_SOCKET );
/* Spawn a task to handle the connection. */
xTaskCreate( prvServerConnectionInstance, "EchoServer", usUsedStackSize, ( void * ) xConnectedSocket, tskIDLE_PRIORITY, NULL );
}
}
/*-----------------------------------------------------------*/
static void prvServerConnectionInstance( void *pvParameters )
{
int32_t lBytes, lSent, lTotalSent;
Socket_t xConnectedSocket;
static const TickType_t xReceiveTimeOut = pdMS_TO_TICKS( 5000 );
static const TickType_t xSendTimeOut = pdMS_TO_TICKS( 5000 );
TickType_t xTimeOnShutdown;
uint8_t *pucRxBuffer;
xConnectedSocket = ( Socket_t ) pvParameters;
/* Attempt to create the buffer used to receive the string to be echoed
back. This could be avoided using a zero copy interface that just returned
the same buffer. */
pucRxBuffer = ( uint8_t * ) pvPortMalloc( ipconfigTCP_MSS );
if( pucRxBuffer != NULL )
{
FreeRTOS_setsockopt( xConnectedSocket, 0, FREERTOS_SO_RCVTIMEO, &xReceiveTimeOut, sizeof( xReceiveTimeOut ) );
FreeRTOS_setsockopt( xConnectedSocket, 0, FREERTOS_SO_SNDTIMEO, &xSendTimeOut, sizeof( xReceiveTimeOut ) );
for( ;; )
{
/* Zero out the receive array so there is NULL at the end of the string
when it is printed out. */
memset( pucRxBuffer, 0x00, ipconfigTCP_MSS );
/* Receive data on the socket. */
lBytes = FreeRTOS_recv( xConnectedSocket, pucRxBuffer, ipconfigTCP_MSS, 0 );
/* If data was received, echo it back. */
if( lBytes >= 0 )
{
lSent = 0;
lTotalSent = 0;
/* Call send() until all the data has been sent. */
while( ( lSent >= 0 ) && ( lTotalSent < lBytes ) )
{
lSent = FreeRTOS_send( xConnectedSocket, pucRxBuffer, lBytes - lTotalSent, 0 );
lTotalSent += lSent;
}
if( lSent < 0 )
{
/* Socket closed? */
break;
}
}
else
{
/* Socket closed? */
break;
}
}
}
/* Initiate a shutdown in case it has not already been initiated. */
FreeRTOS_shutdown( xConnectedSocket, FREERTOS_SHUT_RDWR );
/* Wait for the shutdown to take effect, indicated by FreeRTOS_recv()
returning an error. */
xTimeOnShutdown = xTaskGetTickCount();
do
{
if( FreeRTOS_recv( xConnectedSocket, pucRxBuffer, ipconfigTCP_MSS, 0 ) < 0 )
{
break;
}
} while( ( xTaskGetTickCount() - xTimeOnShutdown ) < tcpechoSHUTDOWN_DELAY );
/* Finished with the socket, buffer, the task. */
vPortFree( pucRxBuffer );
FreeRTOS_closesocket( xConnectedSocket );
vTaskDelete( NULL );
}
/*-----------------------------------------------------------*/
/* The whole file is excluded if TCP is not compiled in. */
#endif /* ipconfigUSE_TCP */

372
FreeRTOS/Demo/Posix_GCC/src/TCPEchoClient_SingleTasks.c
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@ -0,0 +1,372 @@
/*
* FreeRTOS Kernel V10.3.0
* 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!
*/
/*
* A set of tasks are created that send TCP echo requests to the standard echo
* port (port 7) on the IP address set by the configECHO_SERVER_ADDR0 to
* configECHO_SERVER_ADDR3 constants, then wait for and verify the reply
* (another demo is avilable that demonstrates the reception being performed in
* a task other than that from with the request was made).
*
* See the following web page for essential demo usage and configuration
* details:
* http://www.FreeRTOS.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/examples_FreeRTOS_simulator.html
*/
/* Standard includes. */
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
/* FreeRTOS includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
/* FreeRTOS+TCP includes. */
#include "FreeRTOS_IP.h"
#include "FreeRTOS_Sockets.h"
/* Exclude the whole file if FreeRTOSIPConfig.h is configured to use UDP only. */
#if ( ipconfigUSE_TCP == 1 )
/* The echo tasks create a socket, send out a number of echo requests, listen
for the echo reply, then close the socket again before starting over. This
delay is used between each iteration to ensure the network does not get too
congested. */
#define echoLOOP_DELAY ( ( TickType_t ) 150 / portTICK_PERIOD_MS )
/* The echo server is assumed to be on port 7, which is the standard echo
protocol port. */
#define echoECHO_PORT ( 7 )
/* The size of the buffers is a multiple of the MSS - the length of the data
sent is a pseudo random size between 20 and echoBUFFER_SIZES. */
#define echoBUFFER_SIZE_MULTIPLIER ( 3 )
#define echoBUFFER_SIZES ( ipconfigTCP_MSS * echoBUFFER_SIZE_MULTIPLIER )
/* The number of instances of the echo client task to create. */
#define echoNUM_ECHO_CLIENTS ( 1 )
/*-----------------------------------------------------------*/
/*
* Uses a socket to send data to, then receive data from, the standard echo
* port number 7.
*/
static void prvEchoClientTask( void *pvParameters );
/*
* Creates a pseudo random sized buffer of data to send to the echo server.
*/
static BaseType_t prvCreateTxData( char *ucBuffer,
uint32_t ulBufferLength );
/*-----------------------------------------------------------*/
/* Rx and Tx time outs are used to ensure the sockets do not wait too long for
missing data. */
static const TickType_t xReceiveTimeOut = pdMS_TO_TICKS( 4000 );
static const TickType_t xSendTimeOut = pdMS_TO_TICKS( 2000 );
/* Counters for each created task - for inspection only. */
static uint32_t ulTxRxCycles[ echoNUM_ECHO_CLIENTS ] = { 0 },
ulTxRxFailures[ echoNUM_ECHO_CLIENTS ] = { 0 },
ulConnections[ echoNUM_ECHO_CLIENTS ] = { 0 };
/* Rx and Tx buffers for each created task. */
static char cTxBuffers[ echoNUM_ECHO_CLIENTS ][ echoBUFFER_SIZES ],
cRxBuffers[ echoNUM_ECHO_CLIENTS ][ echoBUFFER_SIZES ];
/*-----------------------------------------------------------*/
void vStartTCPEchoClientTasks_SingleTasks( uint16_t usTaskStackSize,
UBaseType_t uxTaskPriority )
{
BaseType_t x;
/* Create the echo client tasks. */
for( x = 0; x < echoNUM_ECHO_CLIENTS; x++ )
{
xTaskCreate( prvEchoClientTask, /* The function that implements the task. */
"Echo0", /* Just a text name for the task to aid debugging. */
usTaskStackSize, /* The stack size is defined in FreeRTOSIPConfig.h. */
( void * ) x, /* The task parameter, not used in this case. */
uxTaskPriority, /* The priority assigned to the task is defined in FreeRTOSConfig.h. */
NULL ); /* The task handle is not used. */
}
}
/*-----------------------------------------------------------*/
static void prvEchoClientTask( void *pvParameters )
{
Socket_t xSocket;
struct freertos_sockaddr xEchoServerAddress;
int32_t lLoopCount = 0UL;
const int32_t lMaxLoopCount = 1;
volatile uint32_t ulTxCount = 0UL;
BaseType_t xReceivedBytes, xReturned, xInstance;
BaseType_t lTransmitted, lStringLength;
char *pcTransmittedString, *pcReceivedString;
WinProperties_t xWinProps;
TickType_t xTimeOnEntering;
BaseType_t ret;
/* Fill in the buffer and window sizes that will be used by the socket. */
xWinProps.lTxBufSize = 6 * ipconfigTCP_MSS;
xWinProps.lTxWinSize = 3;
xWinProps.lRxBufSize = 6 * ipconfigTCP_MSS;
xWinProps.lRxWinSize = 3;
/* This task can be created a number of times. Each instance is numbered
to enable each instance to use a different Rx and Tx buffer. The number is
passed in as the task's parameter. */
xInstance = ( BaseType_t ) pvParameters;
/* Point to the buffers to be used by this instance of this task. */
pcTransmittedString = &( cTxBuffers[ xInstance ][ 0 ] );
pcReceivedString = &( cRxBuffers[ xInstance ][ 0 ] );
/* Echo requests are sent to the echo server. The address of the echo
server is configured by the constants configECHO_SERVER_ADDR0 to
configECHO_SERVER_ADDR3 in FreeRTOSConfig.h. */
xEchoServerAddress.sin_port = FreeRTOS_htons( echoECHO_PORT );
xEchoServerAddress.sin_addr = FreeRTOS_inet_addr_quick( configECHO_SERVER_ADDR0,
configECHO_SERVER_ADDR1,
configECHO_SERVER_ADDR2,
configECHO_SERVER_ADDR3 );
for( ; ; )
{
/* Create a TCP socket. */
xSocket = FreeRTOS_socket( FREERTOS_AF_INET, FREERTOS_SOCK_STREAM, FREERTOS_IPPROTO_TCP );
configASSERT( xSocket != FREERTOS_INVALID_SOCKET );
/* Set a time out so a missing reply does not cause the task to block
indefinitely. */
FreeRTOS_setsockopt( xSocket, 0, FREERTOS_SO_RCVTIMEO, &xReceiveTimeOut, sizeof( xReceiveTimeOut ) );
FreeRTOS_setsockopt( xSocket, 0, FREERTOS_SO_SNDTIMEO, &xSendTimeOut, sizeof( xSendTimeOut ) );
/* Set the window and buffer sizes. */
FreeRTOS_setsockopt( xSocket, 0, FREERTOS_SO_WIN_PROPERTIES, ( void * ) &xWinProps, sizeof( xWinProps ) );
/* Connect to the echo server. */
printf( "connecting to echo server....\n" );
ret = FreeRTOS_connect( xSocket, &xEchoServerAddress, sizeof( xEchoServerAddress ) );
if( ret == 0 )
{
printf( "Connected to server.. \n" );
ulConnections[ xInstance ]++;
/* Send a number of echo requests. */
for( lLoopCount = 0; lLoopCount < lMaxLoopCount; lLoopCount++ )
{
/* Create the string that is sent to the echo server. */
lStringLength = prvCreateTxData( pcTransmittedString, echoBUFFER_SIZES );
/* Add in some unique text at the front of the string. */
sprintf( pcTransmittedString, "TxRx message number %u", ulTxCount );
ulTxCount++;
printf( "sending data to the echo server \n" );
/* Send the string to the socket. */
lTransmitted = FreeRTOS_send( xSocket, /* The socket being sent to. */
( void * ) pcTransmittedString, /* The data being sent. */
lStringLength, /* The length of the data being sent. */
0 ); /* No flags. */
if( lTransmitted < 0 )
{
/* Error? */
break;
}
/* Clear the buffer into which the echoed string will be
placed. */
memset( ( void * ) pcReceivedString, 0x00, echoBUFFER_SIZES );
xReceivedBytes = 0;
/* Receive data echoed back to the socket. */
while( xReceivedBytes < lTransmitted )
{
xReturned = FreeRTOS_recv( xSocket, /* The socket being received from. */
&( pcReceivedString[ xReceivedBytes ] ), /* The buffer into which the received data will be written. */
lStringLength - xReceivedBytes, /* The size of the buffer provided to receive the data. */
0 ); /* No flags. */
if( xReturned < 0 )
{
/* Error occurred. Latch it so it can be detected
below. */
xReceivedBytes = xReturned;
break;
}
else if( xReturned == 0 )
{
/* Timed out. */
break;
}
else
{
/* Keep a count of the bytes received so far. */
xReceivedBytes += xReturned;
}
}
/* If an error occurred it will be latched in xReceivedBytes,
otherwise xReceived bytes will be just that - the number of
bytes received from the echo server. */
if( xReceivedBytes > 0 )
{
/* Compare the transmitted string to the received string. */
configASSERT( strncmp( pcReceivedString, pcTransmittedString, lTransmitted ) == 0 );
if( strncmp( pcReceivedString, pcTransmittedString, lTransmitted ) == 0 )
{
/* The echo reply was received without error. */
ulTxRxCycles[ xInstance ]++;
}
else
{
/* The received string did not match the transmitted
string. */
ulTxRxFailures[ xInstance ]++;
break;
}
}
else if( xReceivedBytes < 0 )
{
/* FreeRTOS_recv() returned an error. */
break;
}
else
{
/* Timed out without receiving anything? */
break;
}
}
/* Finished using the connected socket, initiate a graceful close:
FIN, FIN+ACK, ACK. */
FreeRTOS_shutdown( xSocket, FREERTOS_SHUT_RDWR );
/* Expect FreeRTOS_recv() to return an error once the shutdown is
complete. */
xTimeOnEntering = xTaskGetTickCount();
do
{
xReturned = FreeRTOS_recv( xSocket, /* The socket being received from. */
&( pcReceivedString[ 0 ] ), /* The buffer into which the received data will be written. */
echoBUFFER_SIZES, /* The size of the buffer provided to receive the data. */
0 );
if( xReturned < 0 )
{
break;
}
} while( ( xTaskGetTickCount() - xTimeOnEntering ) < xReceiveTimeOut );
}
else
{
printf( "Could not connect to server %ld\n", ret );
}
/* Close this socket before looping back to create another. */
FreeRTOS_closesocket( xSocket );
/* Pause for a short while to ensure the network is not too
congested. */
vTaskDelay( echoLOOP_DELAY );
}
}
/*-----------------------------------------------------------*/
static BaseType_t prvCreateTxData( char *cBuffer,
uint32_t ulBufferLength )
{
BaseType_t lCharactersToAdd, lCharacter;
char cChar = '0';
const BaseType_t lMinimumLength = 60;
/* Randomise the number of characters that will be sent in the echo
request. */
do
{
lCharactersToAdd = ipconfigRAND32() % ( ulBufferLength - 20UL );
} while( ( lCharactersToAdd == 0 ) || ( lCharactersToAdd < lMinimumLength ) ); /* Must be at least enough to add the unique text to the start of the string later. */
/* Fill the buffer. */
for( lCharacter = 0; lCharacter < lCharactersToAdd; lCharacter++ )
{
cBuffer[ lCharacter ] = cChar;
cChar++;
if( cChar > '~' )
{
cChar = '0';
}
}
return lCharactersToAdd;
}
/*-----------------------------------------------------------*/
BaseType_t xAreSingleTaskTCPEchoClientsStillRunning( void )
{
static uint32_t ulLastEchoSocketCount[ echoNUM_ECHO_CLIENTS ] = { 0 }, ulLastConnections[ echoNUM_ECHO_CLIENTS ] = { 0 };
BaseType_t xReturn = pdPASS, x;
/* Return fail is the number of cycles does not increment between
consecutive calls. */
for( x = 0; x < echoNUM_ECHO_CLIENTS; x++ )
{
if( ulTxRxCycles[ x ] == ulLastEchoSocketCount[ x ] )
{
xReturn = pdFAIL;
}
else
{
ulLastEchoSocketCount[ x ] = ulTxRxCycles[ x ];
}
if( ulConnections[ x ] == ulLastConnections[ x ] )
{
xReturn = pdFAIL;
}
else
{
ulConnections[ x ] = ulLastConnections[ x ];
}
}
return xReturn;
}
#endif /* ipconfigUSE_TCP */

40
FreeRTOS/Demo/Posix_GCC/src/TCPEchoClient_SingleTasks.h
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@ -0,0 +1,40 @@
/*
* FreeRTOS Kernel V10.3.0
* 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!
*/
#ifndef SINGLE_TASK_TCP_ECHO_CLIENTS_H
#define SINGLE_TASK_TCP_ECHO_CLIENTS_H
/*
* Create the TCP echo client tasks. This is the version where an echo request
* is made from the same task that listens for the echo reply.
*/
void vStartTCPEchoClientTasks_SingleTasks( uint16_t usTaskStackSize, UBaseType_t uxTaskPriority );
BaseType_t xAreSingleTaskTCPEchoClientsStillRunning( void );
#endif /* SINGLE_TASK_TCP_ECHO_CLIENTS_H */

97
FreeRTOS/Demo/Posix_GCC/src/main.c
Unescape Escape View File

@ -53,6 +53,7 @@
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <stdarg.h>
/* FreeRTOS kernel includes. */
#include "FreeRTOS.h"
@ -72,7 +73,11 @@ If mainCREATE_SIMPLE_BLINKY_DEMO_ONLY is not 1 then the comprehensive test and
demo application will be built. The comprehensive test and demo application is
implemented and described in main_full.c. */
#ifndef mainCREATE_SIMPLE_BLINKY_DEMO_ONLY
#define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 0
#define mainCREATE_SIMPLE_BLINKY_DEMO_ONLY 0
#endif
#ifndef mainCREATE_TCP_ECHO_TASKS_SINGLE
#define mainCREATE_TCP_ECHO_TASKS_SINGLE 1
#endif
/* This demo uses heap_3.c (the libc provided malloc() and free()). */
@ -85,6 +90,7 @@ implemented and described in main_full.c. */
*/
extern void main_blinky( void );
extern void main_full( void );
extern void main_tcp_echo_client_tasks( void );
/*
* Only the comprehensive demo uses application hook (callback) functions. See
@ -99,10 +105,15 @@ void vFullDemoIdleFunction( void );
*/
void vApplicationMallocFailedHook( void );
void vApplicationIdleHook( void );
void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName );
void vApplicationStackOverflowHook( TaskHandle_t pxTask,
char *pcTaskName );
void vApplicationTickHook( void );
void vApplicationGetIdleTaskMemory( StaticTask_t **ppxIdleTaskTCBBuffer, StackType_t **ppxIdleTaskStackBuffer, uint32_t *pulIdleTaskStackSize );
void vApplicationGetTimerTaskMemory( StaticTask_t **ppxTimerTaskTCBBuffer, StackType_t **ppxTimerTaskStackBuffer, uint32_t *pulTimerTaskStackSize );
void vApplicationGetIdleTaskMemory( StaticTask_t **ppxIdleTaskTCBBuffer,
StackType_t **ppxIdleTaskStackBuffer,
uint32_t *pulIdleTaskStackSize );
void vApplicationGetTimerTaskMemory( StaticTask_t **ppxTimerTaskTCBBuffer,
StackType_t **ppxTimerTaskStackBuffer,
uint32_t *pulTimerTaskStackSize );
/*
* Writes trace data to a disk file when the trace recording is stopped.
@ -127,7 +138,7 @@ static BaseType_t xTraceRunning = pdTRUE;
int main( void )
{
/* Do not include trace code when performing a code coverage analysis. */
#if( projCOVERAGE_TEST != 1 )
#if ( projCOVERAGE_TEST != 1 )
{
/* Initialise the trace recorder. Use of the trace recorder is optional.
See http://www.FreeRTOS.org/trace for more information. */
@ -141,11 +152,12 @@ int main( void )
}
#endif
console_init();
/* The mainCREATE_SIMPLE_BLINKY_DEMO_ONLY setting is described at the top
of this file. */
#if ( mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 )
console_init();
#if ( mainCREATE_TCP_ECHO_TASKS_SINGLE == 1 )
{
main_tcp_echo_client_tasks();
}
#elif ( mainCREATE_SIMPLE_BLINKY_DEMO_ONLY == 1 )
{
main_blinky();
}
@ -153,7 +165,7 @@ int main( void )
{
main_full();
}
#endif
#endif /* if ( mainCREATE_TCP_ECHO_TASKS_SINGLE == 1 ) */
return 0;
}
@ -173,7 +185,7 @@ void vApplicationMallocFailedHook( void )
(although it does not provide information on how the remaining heap might be
fragmented). See http://www.freertos.org/a00111.html for more
information. */
vAssertCalled( __LINE__, __FILE__ );
vAssertCalled( __FILE__, __LINE__ );
}
/*-----------------------------------------------------------*/
@ -189,19 +201,20 @@ void vApplicationIdleHook( void )
because it is the responsibility of the idle task to clean up memory
allocated by the kernel to any task that has since deleted itself. */
sleep(1);
sleep( 1 );
#if ( mainCREATE_SIMPLE_BLINKY_DEMO_ONLY != 1 )
{
/* Call the idle task processing used by the full demo. The simple
blinky demo does not use the idle task hook. */
vFullDemoIdleFunction();
/*vFullDemoIdleFunction();*/
}
#endif
}
/*-----------------------------------------------------------*/
void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
void vApplicationStackOverflowHook( TaskHandle_t pxTask,
char *pcTaskName )
{
( void ) pcTaskName;
( void ) pxTask;
@ -211,7 +224,7 @@ void vApplicationStackOverflowHook( TaskHandle_t pxTask, char *pcTaskName )
function is called if a stack overflow is detected. This function is
provided as an example only as stack overflow checking does not function
when running the FreeRTOS Windows port. */
vAssertCalled( __LINE__, __FILE__ );
vAssertCalled( __FILE__, __LINE__ );
}
/*-----------------------------------------------------------*/
@ -223,12 +236,23 @@ void vApplicationTickHook( void )
code must not attempt to block, and only the interrupt safe FreeRTOS API
functions can be used (those that end in FromISR()). */
#if ( mainCREATE_SIMPLE_BLINKY_DEMO_ONLY != 1 )
{
vFullDemoTickHookFunction();
}
#if ( mainCREATE_SIMPLE_BLINKY_DEMO_ONLY != 1 && \
mainCREATE_TCP_ECHO_TASKS_SINGLE != 1 )
{
vFullDemoTickHookFunction();
}
#endif /* mainCREATE_SIMPLE_BLINKY_DEMO_ONLY */
}
void vLoggingPrintf( const char *pcFormat,
... )
{
va_list arg;
va_start( arg, pcFormat );
vprintf( pcFormat, arg );
va_end( arg );
}
/*-----------------------------------------------------------*/
void vApplicationDaemonTaskStartupHook( void )
@ -240,7 +264,8 @@ void vApplicationDaemonTaskStartupHook( void )
}
/*-----------------------------------------------------------*/
void vAssertCalled( unsigned long ulLine, const char * const pcFileName )
void vAssertCalled( const char * const pcFileName,
unsigned long ulLine )
{
static BaseType_t xPrinted = pdFALSE;
volatile uint32_t ulSetToNonZeroInDebuggerToContinue = 0;
@ -253,12 +278,13 @@ volatile uint32_t ulSetToNonZeroInDebuggerToContinue = 0;
( void ) pcFileName;
taskENTER_CRITICAL();
taskENTER_CRITICAL();
{
/* Stop the trace recording. */
if( xPrinted == pdFALSE )
{
xPrinted = pdTRUE;
if( xTraceRunning == pdTRUE )
{
prvSaveTraceFile();
@ -270,8 +296,8 @@ volatile uint32_t ulSetToNonZeroInDebuggerToContinue = 0;
value. */
while( ulSetToNonZeroInDebuggerToContinue == 0 )
{
__asm volatile( "NOP" );
__asm volatile( "NOP" );
__asm volatile ( "NOP" );
__asm volatile ( "NOP" );
}
}
taskEXIT_CRITICAL();
@ -281,13 +307,13 @@ volatile uint32_t ulSetToNonZeroInDebuggerToContinue = 0;
static void prvSaveTraceFile( void )
{
/* Tracing is not used when code coverage analysis is being performed. */
#if( projCOVERAGE_TEST != 1 )
#if ( projCOVERAGE_TEST != 1 )
{
FILE* pxOutputFile;
FILE * pxOutputFile;
vTraceStop();
pxOutputFile = fopen( "Trace.dump", "wb");
pxOutputFile = fopen( "Trace.dump", "wb" );
if( pxOutputFile != NULL )
{
@ -300,20 +326,22 @@ static void prvSaveTraceFile( void )
printf( "\r\nFailed to create trace dump file\r\n" );
}
}
#endif
#endif /* if ( projCOVERAGE_TEST != 1 ) */
}
/*-----------------------------------------------------------*/
/* configUSE_STATIC_ALLOCATION is set to 1, so the application must provide an
implementation of vApplicationGetIdleTaskMemory() to provide the memory that is
used by the Idle task. */
void vApplicationGetIdleTaskMemory( StaticTask_t **ppxIdleTaskTCBBuffer, StackType_t **ppxIdleTaskStackBuffer, uint32_t *pulIdleTaskStackSize )
void vApplicationGetIdleTaskMemory( StaticTask_t **ppxIdleTaskTCBBuffer,
StackType_t **ppxIdleTaskStackBuffer,
uint32_t *pulIdleTaskStackSize )
{
/* If the buffers to be provided to the Idle task are declared inside this
function then they must be declared static - otherwise they will be allocated on
the stack and so not exists after this function exits. */
static StaticTask_t xIdleTaskTCB;
static StackType_t uxIdleTaskStack[ configMINIMAL_STACK_SIZE ];
static StaticTask_t xIdleTaskTCB;
static StackType_t uxIdleTaskStack[ configMINIMAL_STACK_SIZE ];
/* Pass out a pointer to the StaticTask_t structure in which the Idle task's
state will be stored. */
@ -332,12 +360,14 @@ static StackType_t uxIdleTaskStack[ configMINIMAL_STACK_SIZE ];
/* configUSE_STATIC_ALLOCATION and configUSE_TIMERS are both set to 1, so the
application must provide an implementation of vApplicationGetTimerTaskMemory()
to provide the memory that is used by the Timer service task. */
void vApplicationGetTimerTaskMemory( StaticTask_t **ppxTimerTaskTCBBuffer, StackType_t **ppxTimerTaskStackBuffer, uint32_t *pulTimerTaskStackSize )
void vApplicationGetTimerTaskMemory( StaticTask_t **ppxTimerTaskTCBBuffer,
StackType_t **ppxTimerTaskStackBuffer,
uint32_t *pulTimerTaskStackSize )
{
/* If the buffers to be provided to the Timer task are declared inside this
function then they must be declared static - otherwise they will be allocated on
the stack and so not exists after this function exits. */
static StaticTask_t xTimerTaskTCB;
static StaticTask_t xTimerTaskTCB;
/* Pass out a pointer to the StaticTask_t structure in which the Timer
task's state will be stored. */
@ -351,4 +381,3 @@ static StaticTask_t xTimerTaskTCB;
configMINIMAL_STACK_SIZE is specified in words, not bytes. */
*pulTimerTaskStackSize = configTIMER_TASK_STACK_DEPTH;
}

321
FreeRTOS/Demo/Posix_GCC/src/main_networking.c
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@ -0,0 +1,321 @@
/*
* 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!
*/
/*
* This project is a cut down version of the project described on the following
* link. Only the simple UDP client and server and the TCP echo clients are
* included in the build:
* http://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/examples_FreeRTOS_simulator.html
*/
/* Standard includes. */
#include <stdio.h>
#include <time.h>
#include <unistd.h>
/* FreeRTOS includes. */
#include <FreeRTOS.h>
#include "task.h"
/* Demo application includes. */
#include "FreeRTOS_IP.h"
#include "FreeRTOS_Sockets.h"
/*#include "SimpleUDPClientAndServer.h" */
/*#include "SimpleTCPEchoServer.h" */
/*#include "TCPEchoClient_SingleTasks.h" */
/*#include "demo_logging.h" */
#include "TCPEchoClient_SingleTasks.h"
/* Simple UDP client and server task parameters. */
#define mainSIMPLE_UDP_CLIENT_SERVER_TASK_PRIORITY ( tskIDLE_PRIORITY )
#define mainSIMPLE_UDP_CLIENT_SERVER_PORT ( 5005UL )
/* Echo client task parameters - used for both TCP and UDP echo clients. */
#define mainECHO_CLIENT_TASK_STACK_SIZE ( configMINIMAL_STACK_SIZE * 2 ) /* Not used in the linux port. */
#define mainECHO_CLIENT_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
/* Echo server task parameters. */
#define mainECHO_SERVER_TASK_STACK_SIZE ( configMINIMAL_STACK_SIZE * 2 ) /* Not used in the linux port. */
#define mainECHO_SERVER_TASK_PRIORITY ( tskIDLE_PRIORITY + 1 )
/* Define a name that will be used for LLMNR and NBNS searches. */
#define mainHOST_NAME "RTOSDemo"
#define mainDEVICE_NICK_NAME "linux_demo"
/* Set the following constants to 1 or 0 to define which tasks to include and
exclude:
mainCREATE_TCP_ECHO_TASKS_SINGLE: When set to 1 a set of tasks are created that
send TCP echo requests to the standard echo port (port 7), then wait for and
verify the echo reply, from within the same task (Tx and Rx are performed in the
same RTOS task). The IP address of the echo server must be configured using the
configECHO_SERVER_ADDR0 to configECHO_SERVER_ADDR3 constants in
FreeRTOSConfig.h.
*/
#define mainCREATE_TCP_ECHO_TASKS_SINGLE 1
/*-----------------------------------------------------------*/
/*
* Just seeds the simple pseudo random number generator.
*/
static void prvSRand( UBaseType_t ulSeed );
/*
* Miscellaneous initialisation including preparing the logging and seeding the
* random number generator.
*/
static void prvMiscInitialisation( void );
/* The default IP and MAC address used by the demo. The address configuration
defined here will be used if ipconfigUSE_DHCP is 0, or if ipconfigUSE_DHCP is
1 but a DHCP server could not be contacted. See the online documentation for
more information. */
static const uint8_t ucIPAddress[ 4 ] = { configIP_ADDR0, configIP_ADDR1, configIP_ADDR2, configIP_ADDR3 };
static const uint8_t ucNetMask[ 4 ] = { configNET_MASK0, configNET_MASK1, configNET_MASK2, configNET_MASK3 };
static const uint8_t ucGatewayAddress[ 4 ] = { configGATEWAY_ADDR0, configGATEWAY_ADDR1, configGATEWAY_ADDR2, configGATEWAY_ADDR3 };
static const uint8_t ucDNSServerAddress[ 4 ] = { configDNS_SERVER_ADDR0, configDNS_SERVER_ADDR1, configDNS_SERVER_ADDR2, configDNS_SERVER_ADDR3 };
/* Set the following constant to pdTRUE to log using the method indicated by the
name of the constant, or pdFALSE to not log using the method indicated by the
name of the constant. Options include to standard out (xLogToStdout), to a disk
file (xLogToFile), and to a UDP port (xLogToUDP). If xLogToUDP is set to pdTRUE
then UDP messages are sent to the IP address configured as the echo server
address (see the configECHO_SERVER_ADDR0 definitions in FreeRTOSConfig.h) and
the port number set by configPRINT_PORT in FreeRTOSConfig.h. */
const BaseType_t xLogToStdout = pdTRUE, xLogToFile = pdFALSE, xLogToUDP = pdFALSE;
/* Default MAC address configuration. The demo creates a virtual network
connection that uses this MAC address by accessing the raw Ethernet data
to and from a real network connection on the host PC. See the
configNETWORK_INTERFACE_TO_USE definition for information on how to configure
the real network connection to use. */
const uint8_t ucMACAddress[ 6 ] = { configMAC_ADDR0, configMAC_ADDR1, configMAC_ADDR2, configMAC_ADDR3, configMAC_ADDR4, configMAC_ADDR5 };
/* Use by the pseudo random number generator. */
static UBaseType_t ulNextRand;
/*-----------------------------------------------------------*/
void main_tcp_echo_client_tasks( void )
{
const uint32_t ulLongTime_ms = pdMS_TO_TICKS( 1000UL );
/*
* Instructions for using this project are provided on:
* http://www.freertos.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/examples_FreeRTOS_simulator.html
*/
/* Miscellaneous initialisation including preparing the logging and seeding
the random number generator. */
prvMiscInitialisation();
/* Initialise the network interface.
***NOTE*** Tasks that use the network are created in the network event hook
when the network is connected and ready for use (see the definition of
vApplicationIPNetworkEventHook() below). The address values passed in here
are used if ipconfigUSE_DHCP is set to 0, or if ipconfigUSE_DHCP is set to 1
but a DHCP server cannot be contacted. */
FreeRTOS_debug_printf( ( "FreeRTOS_IPInit\n" ) );
FreeRTOS_IPInit( ucIPAddress,
ucNetMask,
ucGatewayAddress,
ucDNSServerAddress,
ucMACAddress );
/* Start the RTOS scheduler. */
FreeRTOS_debug_printf( ( "vTaskStartScheduler\n" ) );
vTaskStartScheduler();
FreeRTOS_debug_printf( ( "Should not reach this point after scheduler\n" ) );
/* If all is well, the scheduler will now be running, and the following
line will never be reached. If the following line does execute, then
there was insufficient FreeRTOS heap memory available for the idle and/or
timer tasks to be created. See the memory management section on the
FreeRTOS web site for more details (this is standard text that is not not
really applicable to the Win32 simulator port). */
for( ; ; )
{
usleep( ulLongTime_ms * 1000 );
}
}
/*-----------------------------------------------------------*/
/* Called by FreeRTOS+TCP when the network connects or disconnects. Disconnect
events are only received if implemented in the MAC driver. */
void vApplicationIPNetworkEventHook( eIPCallbackEvent_t eNetworkEvent )
{
uint32_t ulIPAddress, ulNetMask, ulGatewayAddress, ulDNSServerAddress;
char cBuffer[ 16 ];
static BaseType_t xTasksAlreadyCreated = pdFALSE;
/* If the network has just come up...*/
if( eNetworkEvent == eNetworkUp )
{
/* Create the tasks that use the IP stack if they have not already been
created. */
if( xTasksAlreadyCreated == pdFALSE )
{
/* See the comments above the definitions of these pre-processor
macros at the top of this file for a description of the individual
demo tasks. */
#if ( mainCREATE_TCP_ECHO_TASKS_SINGLE == 1 )
{
vStartTCPEchoClientTasks_SingleTasks( mainECHO_CLIENT_TASK_STACK_SIZE, mainECHO_CLIENT_TASK_PRIORITY );
}
#endif /* mainCREATE_TCP_ECHO_TASKS_SINGLE */
xTasksAlreadyCreated = pdTRUE;
}
/* Print out the network configuration, which may have come from a DHCP
server. */
FreeRTOS_GetAddressConfiguration( &ulIPAddress, &ulNetMask, &ulGatewayAddress, &ulDNSServerAddress );
FreeRTOS_inet_ntoa( ulIPAddress, cBuffer );
FreeRTOS_printf( ( "\r\n\r\nIP Address: %s\r\n", cBuffer ) );
FreeRTOS_inet_ntoa( ulNetMask, cBuffer );
FreeRTOS_printf( ( "Subnet Mask: %s\r\n", cBuffer ) );
FreeRTOS_inet_ntoa( ulGatewayAddress, cBuffer );
FreeRTOS_printf( ( "Gateway Address: %s\r\n", cBuffer ) );
FreeRTOS_inet_ntoa( ulDNSServerAddress, cBuffer );
FreeRTOS_printf( ( "DNS Server Address: %s\r\n\r\n\r\n", cBuffer ) );
}
else
{
printf( "application iddle hook network down\n" );
}
}
/*-----------------------------------------------------------*/
UBaseType_t uxRand( void )
{
const uint32_t ulMultiplier = 0x015a4e35UL, ulIncrement = 1UL;
/* Utility function to generate a pseudo random number. */
ulNextRand = ( ulMultiplier * ulNextRand ) + ulIncrement;
return( ( int ) ( ulNextRand >> 16UL ) & 0x7fffUL );
}
/*-----------------------------------------------------------*/
static void prvSRand( UBaseType_t ulSeed )
{
/* Utility function to seed the pseudo random number generator. */
ulNextRand = ulSeed;
}
/*-----------------------------------------------------------*/
static void prvMiscInitialisation( void )
{
time_t xTimeNow;
/* Seed the random number generator. */
time( &xTimeNow );
FreeRTOS_debug_printf( ( "Seed for randomiser: %lu\n", xTimeNow ) );
prvSRand( ( uint32_t ) xTimeNow );
FreeRTOS_debug_printf( ( "Random numbers: %08X %08X %08X %08X\n",
ipconfigRAND32(),
ipconfigRAND32(),
ipconfigRAND32(),
ipconfigRAND32() ) );
}
/*-----------------------------------------------------------*/
#if ( ipconfigUSE_LLMNR != 0 ) || ( ipconfigUSE_NBNS != 0 ) || ( ipconfigDHCP_REGISTER_HOSTNAME == 1 )
const char * pcApplicationHostnameHook( void )
{
/* Assign the name "FreeRTOS" to this network node. This function will
be called during the DHCP: the machine will be registered with an IP
address plus this name. */
return mainHOST_NAME;
}
#endif
/*-----------------------------------------------------------*/
#if ( ipconfigUSE_LLMNR != 0 ) || ( ipconfigUSE_NBNS != 0 )
BaseType_t xApplicationDNSQueryHook( const char *pcName )
{
BaseType_t xReturn;
/* Determine if a name lookup is for this node. Two names are given
to this node: that returned by pcApplicationHostnameHook() and that set
by mainDEVICE_NICK_NAME. */
if( strcasecmp( pcName, pcApplicationHostnameHook() ) == 0 )
{
xReturn = pdPASS;
}
else if( strcasecmp( pcName, mainDEVICE_NICK_NAME ) == 0 )
{
xReturn = pdPASS;
}
else
{
xReturn = pdFAIL;
}
return xReturn;
}
#endif /* if ( ipconfigUSE_LLMNR != 0 ) || ( ipconfigUSE_NBNS != 0 ) */
/*
* Callback that provides the inputs necessary to generate a randomized TCP
* Initial Sequence Number per RFC 6528. THIS IS ONLY A DUMMY IMPLEMENTATION
* THAT RETURNS A PSEUDO RANDOM NUMBER SO IS NOT INTENDED FOR USE IN PRODUCTION
* SYSTEMS.
*/
extern uint32_t ulApplicationGetNextSequenceNumber( uint32_t ulSourceAddress,
uint16_t usSourcePort,
uint32_t ulDestinationAddress,
uint16_t usDestinationPort )
{
( void ) ulSourceAddress;
( void ) usSourcePort;
( void ) ulDestinationAddress;
( void ) usDestinationPort;
return uxRand();
}
/*
* Supply a random number to FreeRTOS+TCP stack.
* THIS IS ONLY A DUMMY IMPLEMENTATION THAT RETURNS A PSEUDO RANDOM NUMBER
* SO IS NOT INTENDED FOR USE IN PRODUCTION SYSTEMS.
*/
BaseType_t xApplicationGetRandomNumber( uint32_t * pulNumber )
{
*( pulNumber ) = uxRand();
return pdTRUE;
}

75
FreeRTOS/Demo/Posix_GCC/src/utils/wait_for_event.c
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@ -0,0 +1,75 @@
#include <pthread.h>
#include <stdlib.h>
#include <errno.h>
#include "wait_for_event.h"
struct event
{
pthread_mutex_t mutex;
pthread_cond_t cond;
bool event_triggered;
};
struct event * event_create()
{
struct event * ev = malloc( sizeof( struct event ) );
ev->event_triggered = false;
pthread_mutex_init( &ev->mutex, NULL );
pthread_cond_init( &ev->cond, NULL );
return ev;
}
void event_delete( struct event * ev )
{
pthread_mutex_destroy( &ev->mutex );
pthread_cond_destroy( &ev->cond );
free( ev );
}
bool event_wait( struct event * ev )
{
pthread_mutex_lock( &ev->mutex );
while( ev->event_triggered == false )
{
pthread_cond_wait( &ev->cond, &ev->mutex );
}
pthread_mutex_unlock( &ev->mutex );
return true;
}
bool event_wait_timed( struct event * ev,
time_t ms )
{
struct timespec ts;
int ret = 0;
clock_gettime( CLOCK_REALTIME, &ts );
//ts.tv_sec += ms;
ts.tv_nsec += (ms * 1000000);
pthread_mutex_lock( &ev->mutex );
while( (ev->event_triggered == false) && (ret == 0) )
{
ret = pthread_cond_timedwait( &ev->cond, &ev->mutex, &ts );
if( ( ret == -1 ) && ( errno == ETIMEDOUT ) )
{
return false;
}
}
ev->event_triggered = false;
pthread_mutex_unlock( &ev->mutex );
return true;
}
void event_signal( struct event * ev )
{
pthread_mutex_lock( &ev->mutex );
ev->event_triggered = true;
pthread_cond_signal( &ev->cond );
pthread_mutex_unlock( &ev->mutex );
}

18
FreeRTOS/Demo/Posix_GCC/src/utils/wait_for_event.h
Unescape Escape View File

@ -0,0 +1,18 @@
#ifndef _WAIT_FOR_EVENT_H_
#define _WAIT_FOR_EVENT_H_
#include <stdbool.h>
#include <time.h>
struct event;
struct event * event_create();
void event_delete( struct event * );
bool event_wait( struct event * ev );
bool event_wait_timed( struct event * ev,
time_t ms );
void event_signal( struct event * ev );
#endif /* ifndef _WAIT_FOR_EVENT_H_ */
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