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Add transport interface and MQTT plaintext demo (#130)

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* Add transport interface for FreeRTOS

* Add MQTT plaintext demo
This commit is contained in:
Muneeb Ahmed
2020-07-10 12:19:57 -07:00
committed by GitHub
parent 5399d97814
commit b98b75e312
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FreeRTOS-Plus/Demo/FreeRTOS-IoT-Libraries-LTS-Beta2/mqtt/mqtt_plain_text/DemoTasks/PlaintextMQTTExample.c Normal file
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/*
* 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!
*/
/*
* Demo for showing use of the managed MQTT API.
*
* The Example shown below uses this API to create MQTT messages and
* send them over the connection established using FreeRTOS sockets.
* The example is single threaded and uses statically allocated memory;
* it uses QOS0 and therefore does not implement any retransmission
* mechanism for Publish messages.
*
* !!! NOTE !!!
* This MQTT demo does not authenticate the server nor the client.
* Hence, this demo should not be used as production ready code.
*/
/* Standard includes. */
#include <string.h>
#include <stdio.h>
/* Kernel includes. */
#include "FreeRTOS.h"
#include "task.h"
/* FreeRTOS+TCP includes. */
#include "FreeRTOS_IP.h"
#include "FreeRTOS_Sockets.h"
/* Demo Specific configs. */
#include "demo_config.h"
/* MQTT library includes. */
#include "mqtt.h"
/* Transport interface include. */
#include "transport_interface_freertos.h"
/* Default values for configs. */
#ifndef democonfigCLIENT_IDENTIFIER
/**
* @brief The MQTT client identifier used in this example. Each client identifier
* must be unique so edit as required to ensure no two clients connecting to the
* same broker use the same client identifier.
*
* @note Appending __TIME__ to the client id string will reduce the possibility of a
* client id collision in the broker. Note that the appended time is the compilation
* time. This client id can cause collision, if more than one instance of the same
* binary is used at the same time to connect to the broker.
*/
#define democonfigCLIENT_IDENTIFIER "testClient"__TIME__
#endif
#ifndef democonfigMQTT_BROKER_ENDPOINT
/**
* @brief Details of the MQTT broker to connect to.
*/
#define democonfigMQTT_BROKER_ENDPOINT "test.mosquitto.org"
#endif
#ifndef democonfigMQTT_BROKER_PORT
/**
* @brief The port to use for the demo.
*/
#define democonfigMQTT_BROKER_PORT ( 1883 )
#endif
/**
* @brief Timeout for receiving CONNACK packet in milliseconds.
*/
#define mqttexampleCONNACK_RECV_TIMEOUT_MS ( 1000U )
/**
* @brief The topic to subscribe and publish to in the example.
*
* The topic name starts with the client identifier to ensure that each demo
* interacts with a unique topic name.
*/
#define mqttexampleTOPIC democonfigCLIENT_IDENTIFIER "/example/topic"
/**
* @brief The MQTT message published in this example.
*/
#define mqttexampleMESSAGE "Hello World!"
/**
* @brief Dimensions a file scope buffer currently used to send and receive MQTT data
* from a socket.
*/
#define mqttexampleSHARED_BUFFER_SIZE ( 500U )
/**
* @brief Time to wait between each cycle of the demo implemented by prvMQTTDemoTask().
*/
#define mqttexampleDELAY_BETWEEN_DEMO_ITERATIONS ( pdMS_TO_TICKS( 5000U ) )
/**
* @brief Timeout for MQTT_ProcessLoop in milliseconds.
*/
#define mqttexamplePROCESS_LOOP_TIMEOUT_MS ( 500U )
/**
* @brief Keep alive time reported to the broker while establishing an MQTT connection.
*
* It is the responsibility of the Client to ensure that the interval between
* Control Packets being sent does not exceed the this Keep Alive value. In the
* absence of sending any other Control Packets, the Client MUST send a
* PINGREQ Packet.
*/
#define mqttexampleKEEP_ALIVE_TIMEOUT_SECONDS ( 60U )
/**
* @brief Delay between MQTT publishes. Note that the process loop also has a
* timeout, so the total time between publishes is the sum of the two delays.
*/
#define mqttexampleDELAY_BETWEEN_PUBLISHES ( pdMS_TO_TICKS( 500U ) )
/**
* @brief Transport timeout in milliseconds for transport send and receive.
*/
#define TRANSPORT_SEND_RECV_TIMEOUT_MS ( 200U )
#define _MILLISECONDS_PER_SECOND ( 1000U ) /**< @brief Milliseconds per second. */
#define _MILLISECONDS_PER_TICK ( _MILLISECONDS_PER_SECOND / configTICK_RATE_HZ ) /**< Milliseconds per FreeRTOS tick. */
/*-----------------------------------------------------------*/
/**
* @brief The task used to demonstrate the MQTT API.
*
* @param[in] pvParameters Parameters as passed at the time of task creation. Not
* used in this example.
*/
static void prvMQTTDemoTask( void * pvParameters );
/**
* @brief Sends an MQTT Connect packet over the already connected TCP socket.
*
* @param pxMQTTContext MQTT context pointer.
* @param xNetworkContext network context.
*
*/
static void prvCreateMQTTConnectionWithBroker( MQTTContext_t * pxMQTTContext,
NetworkContext_t * pxNetworkContext );
/**
* @brief Subscribes to the topic as specified in mqttexampleTOPIC at the top of
* this file.
*
* @param pxMQTTContext MQTT context pointer.
*/
static void prvMQTTSubscribeToTopic( MQTTContext_t * pxMQTTContext );
/**
* @brief Publishes a message mqttexampleMESSAGE on mqttexampleTOPIC topic.
*
* @param pxMQTTContext MQTT context pointer.
*/
static void prvMQTTPublishToTopic( MQTTContext_t * pxMQTTContext );
/**
* @brief Unsubscribes from the previously subscribed topic as specified
* in mqttexampleTOPIC.
*
* @param pxMQTTContext MQTT context pointer.
*/
static void prvMQTTUnsubscribeFromTopic( MQTTContext_t * pxMQTTContext );
/**
* @brief The timer query function provided to the MQTT context.
*
* @return Time in milliseconds.
*/
static uint32_t prvGetTimeMs( void );
/**
* @brief Process a response or ack to an MQTT request (PING, SUBSCRIBE
* or UNSUBSCRIBE). This function processes PINGRESP, SUBACK, UNSUBACK
*
* @param pxIncomingPacket is a pointer to structure containing deserialized
* MQTT response.
* @param usPacketId is the packet identifier from the ack received.
*/
static void prvMQTTProcessResponse( MQTTPacketInfo_t * pxIncomingPacket,
uint16_t usPacketId );
/**
* @brief Process incoming Publish message.
*
* @param pxPublishInfo is a pointer to structure containing deserialized
* Publish message.
*/
static void prvMQTTProcessIncomingPublish( MQTTPublishInfo_t * pxPublishInfo );
/**
* @brief The application callback function for getting the incoming publish
* and incoming acks reported from the MQTT library.
*
* @param pxMQTTContext MQTT context pointer.
* @param pxPacketInfo Packet Info pointer for the incoming packet.
* @param usPacketIdentifier Packet identifier of the incoming packet.
* @param pxPublishInfo Deserialized publish info pointer for the incoming
* packet.
*/
static void prvEventCallback( MQTTContext_t * pxMQTTContext,
MQTTPacketInfo_t * pxPacketInfo,
uint16_t usPacketIdentifier,
MQTTPublishInfo_t * pxPublishInfo );
/*-----------------------------------------------------------*/
/* @brief Static buffer used to hold MQTT messages being sent and received. */
static uint8_t ucSharedBuffer[ mqttexampleSHARED_BUFFER_SIZE ];
/**
* @brief Global entry time into the application to use as a reference timestamp
* in the #prvGetTimeMs function. #prvGetTimeMs will always return the difference
* between the current time and the global entry time. This will reduce the chances
* of overflow for the 32 bit unsigned integer used for holding the timestamp.
*/
static uint32_t ulGlobalEntryTimeMs;
/**
* @brief Packet Identifier generated when Subscribe request was sent to the broker;
* it is used to match received Subscribe ACK to the transmitted ACK.
*/
static uint16_t usSubscribePacketIdentifier;
/**
* @brief Packet Identifier generated when Unsubscribe request was sent to the broker;
* it is used to match received Unsubscribe response to the transmitted unsubscribe
* request.
*/
static uint16_t usUnsubscribePacketIdentifier;
/** @brief Static buffer used to hold MQTT messages being sent and received. */
static MQTTFixedBuffer_t xBuffer =
{
.pBuffer = ucSharedBuffer,
.size = mqttexampleSHARED_BUFFER_SIZE
};
/*-----------------------------------------------------------*/
/*
* @brief Create the task that demonstrates the Plain text MQTT API Demo.
*/
void vStartSimpleMQTTDemo( void )
{
/* This example uses a single application task, which in turn is used to
* connect, subscribe, publish, unsubscribe and disconnect from the MQTT
* broker. */
xTaskCreate( prvMQTTDemoTask, /* Function that implements the task. */
"MQTTDemo", /* Text name for the task - only used for debugging. */
democonfigDEMO_STACKSIZE, /* Size of stack (in words, not bytes) to allocate for the task. */
NULL, /* Task parameter - not used in this case. */
tskIDLE_PRIORITY, /* Task priority, must be between 0 and configMAX_PRIORITIES - 1. */
NULL ); /* Used to pass out a handle to the created task - not used in this case. */
}
/*-----------------------------------------------------------*/
static void prvMQTTDemoTask( void * pvParameters )
{
uint32_t ulPublishCount = 0U;
const uint32_t ulMaxPublishCount = 5UL;
NetworkContext_t xNetworkContext = { 0 };
MQTTContext_t xMQTTContext;
MQTTStatus_t xMQTTStatus;
/* Remove compiler warnings about unused parameters. */
( void ) pvParameters;
ulGlobalEntryTimeMs = prvGetTimeMs();
for( ; ; )
{
/****************************** Connect. ******************************/
/* Establish a TCP connection with the MQTT broker. This example connects to
* the MQTT broker as specified in democonfigMQTT_BROKER_ENDPOINT and
* democonfigMQTT_BROKER_PORT at the top of this file. */
LogInfo( ( "Create a TCP connection to %s.\r\n", democonfigMQTT_BROKER_ENDPOINT ) );
Transport_FreeRTOS_Connect( &xNetworkContext,
democonfigMQTT_BROKER_ENDPOINT,
democonfigMQTT_BROKER_PORT,
TRANSPORT_SEND_RECV_TIMEOUT_MS );
/* Sends an MQTT Connect packet over the already connected TCP socket,
* and waits for connection acknowledgment (CONNACK) packet. */
LogInfo( ( "Creating an MQTT connection to %s.\r\n", democonfigMQTT_BROKER_ENDPOINT ) );
prvCreateMQTTConnectionWithBroker( &xMQTTContext, &xNetworkContext );
/**************************** Subscribe. ******************************/
/* The client is now connected to the broker. Subscribe to the topic
* as specified in mqttexampleTOPIC at the top of this file by sending a
* subscribe packet then waiting for a subscribe acknowledgment (SUBACK).
* This client will then publish to the same topic it subscribed to, so it
* will expect all the messages it sends to the broker to be sent back to it
* from the broker. This demo uses QOS0 in Subscribe, therefore, the Publish
* messages received from the broker will have QOS0. */
LogInfo( ( "Attempt to subscribed to the MQTT topic %s.\r\n", mqttexampleTOPIC ) );
prvMQTTSubscribeToTopic( &xMQTTContext );
/* Process incoming packet from the broker. After sending the subscribe, the
* client may receive a publish before it receives a subscribe ack. Therefore,
* call generic incoming packet processing function. Since this demo is
* subscribing to the topic to which no one is publishing, probability of
* receiving Publish message before subscribe ack is zero; but application
* must be ready to receive any packet. This demo uses the generic packet
* processing function everywhere to highlight this fact. */
xMQTTStatus = MQTT_ProcessLoop( &xMQTTContext, mqttexamplePROCESS_LOOP_TIMEOUT_MS );
configASSERT( xMQTTStatus == MQTTSuccess );
/**************************** Publish and Keep Alive Loop. ******************************/
/* Publish messages with QOS0, send and process Keep alive messages. */
for( ulPublishCount = 0; ulPublishCount < ulMaxPublishCount; ulPublishCount++ )
{
LogInfo( ( "Publish to the MQTT topic %s.\r\n", mqttexampleTOPIC ) );
prvMQTTPublishToTopic( &xMQTTContext );
/* Process incoming publish echo, since application subscribed to the same
* topic the broker will send publish message back to the application. */
LogInfo( ( "Attempt to receive publish message from broker.\r\n" ) );
xMQTTStatus = MQTT_ProcessLoop( &xMQTTContext, mqttexamplePROCESS_LOOP_TIMEOUT_MS );
configASSERT( xMQTTStatus == MQTTSuccess );
/* Leave Connection Idle for some time. */
LogInfo( ( "Keeping Connection Idle...\r\n\r\n" ) );
vTaskDelay( mqttexampleDELAY_BETWEEN_PUBLISHES );
}
/************************ Unsubscribe from the topic. **************************/
LogInfo( ( "Unsubscribe from the MQTT topic %s.\r\n", mqttexampleTOPIC ) );
prvMQTTUnsubscribeFromTopic( &xMQTTContext );
/* Process Incoming packet from the broker. */
xMQTTStatus = MQTT_ProcessLoop( &xMQTTContext, mqttexamplePROCESS_LOOP_TIMEOUT_MS );
configASSERT( xMQTTStatus == MQTTSuccess );
/**************************** Disconnect. ******************************/
/* Send an MQTT Disconnect packet over the already connected TCP socket.
* There is no corresponding response for the disconnect packet. After sending
* disconnect, client must close the network connection. */
LogInfo( ( "Disconnecting the MQTT connection with %s.\r\n", democonfigMQTT_BROKER_ENDPOINT ) );
MQTT_Disconnect( &xMQTTContext );
/* Close the network connection. */
Transport_FreeRTOS_Disconnect( &xNetworkContext );
/* Wait for some time between two iterations to ensure that we do not
* bombard the public test mosquitto broker. */
LogInfo( ( "prvMQTTDemoTask() completed an iteration successfully. Total free heap is %u.\r\n", xPortGetFreeHeapSize() ) );
LogInfo( ( "Demo completed successfully.\r\n" ) );
LogInfo( ( "Short delay before starting the next iteration.... \r\n\r\n" ) );
vTaskDelay( mqttexampleDELAY_BETWEEN_DEMO_ITERATIONS );
}
}
/*-----------------------------------------------------------*/
static void prvCreateMQTTConnectionWithBroker( MQTTContext_t * pxMQTTContext,
NetworkContext_t * pxNetworkContext )
{
MQTTStatus_t xResult;
MQTTConnectInfo_t xConnectInfo;
uint16_t usPacketId;
bool xSessionPresent;
TransportInterface_t xTransport;
MQTTApplicationCallbacks_t xCallbacks;
/***
* For readability, error handling in this function is restricted to the use of
* asserts().
***/
/* Fill in Transport Interface send and receive function pointers. */
xTransport.pNetworkContext = pxNetworkContext;
xTransport.send = Transport_FreeRTOS_send;
xTransport.recv = Transport_FreeRTOS_recv;
/* Application callbacks for receiving incoming published and incoming acks
* from MQTT library. */
xCallbacks.appCallback = prvEventCallback;
xCallbacks.getTime = prvGetTimeMs;
/* Initialize MQTT library. */
xResult = MQTT_Init( pxMQTTContext, &xTransport, &xCallbacks, &xBuffer );
configASSERT( xResult == MQTTSuccess );
/* Many fields not used in this demo so start with everything at 0. */
memset( ( void * ) &xConnectInfo, 0x00, sizeof( xConnectInfo ) );
/* Start with a clean session i.e. direct the MQTT broker to discard any
* previous session data. Also, establishing a connection with clean session
* will ensure that the broker does not store any data when this client
* gets disconnected. */
xConnectInfo.cleanSession = true;
/* The client identifier is used to uniquely identify this MQTT client to
* the MQTT broker. In a production device the identifier can be something
* unique, such as a device serial number. */
xConnectInfo.pClientIdentifier = democonfigCLIENT_IDENTIFIER;
xConnectInfo.clientIdentifierLength = ( uint16_t ) strlen( democonfigCLIENT_IDENTIFIER );
/* Set MQTT keep-alive period. It is the responsibility of the application to ensure
* that the interval between Control Packets being sent does not exceed the Keep Alive value.
* In the absence of sending any other Control Packets, the Client MUST send a PINGREQ Packet. */
xConnectInfo.keepAliveSeconds = mqttexampleKEEP_ALIVE_TIMEOUT_SECONDS;
/* Send MQTT CONNECT packet to broker. LWT is not used in this demo, so it
* is passed as NULL. */
xResult = MQTT_Connect( pxMQTTContext,
&xConnectInfo,
NULL,
mqttexampleCONNACK_RECV_TIMEOUT_MS,
&xSessionPresent );
if( xResult != MQTTSuccess )
{
LogError( ( "Connection with MQTT broker failed.\r\n" ) );
}
}
/*-----------------------------------------------------------*/
static void prvMQTTSubscribeToTopic( MQTTContext_t * pxMQTTContext )
{
MQTTStatus_t xResult;
MQTTSubscribeInfo_t xMQTTSubscription[ 1 ];
/***
* For readability, error handling in this function is restricted to the use of
* asserts().
***/
/* Some fields not used by this demo so start with everything at 0. */
( void ) memset( ( void * ) &xMQTTSubscription, 0x00, sizeof( xMQTTSubscription ) );
/* Subscribe to the mqttexampleTOPIC topic filter. This example subscribes to
* only one topic and uses QOS0. */
xMQTTSubscription[ 0 ].qos = MQTTQoS0;
xMQTTSubscription[ 0 ].pTopicFilter = mqttexampleTOPIC;
xMQTTSubscription[ 0 ].topicFilterLength = ( uint16_t ) strlen( mqttexampleTOPIC );
/* Get a unique packet id. */
usSubscribePacketIdentifier = MQTT_GetPacketId( pxMQTTContext );
/* Make sure the packet id obtained is valid. */
configASSERT( usSubscribePacketIdentifier != 0 );
/* Send SUBSCRIBE packet. */
xResult = MQTT_Subscribe( pxMQTTContext,
xMQTTSubscription,
sizeof( xMQTTSubscription ) / sizeof( MQTTSubscribeInfo_t ),
usSubscribePacketIdentifier );
configASSERT( xResult == MQTTSuccess );
}
/*-----------------------------------------------------------*/
static void prvMQTTPublishToTopic( MQTTContext_t * pxMQTTContext )
{
MQTTStatus_t xResult;
MQTTPublishInfo_t xMQTTPublishInfo;
/***
* For readability, error handling in this function is restricted to the use of
* asserts().
***/
/* Some fields not used by this demo so start with everything at 0. */
( void ) memset( ( void * ) &xMQTTPublishInfo, 0x00, sizeof( xMQTTPublishInfo ) );
/* This demo uses QOS0 */
xMQTTPublishInfo.qos = MQTTQoS0;
xMQTTPublishInfo.retain = false;
xMQTTPublishInfo.pTopicName = mqttexampleTOPIC;
xMQTTPublishInfo.topicNameLength = ( uint16_t ) strlen( mqttexampleTOPIC );
xMQTTPublishInfo.pPayload = mqttexampleMESSAGE;
xMQTTPublishInfo.payloadLength = strlen( mqttexampleMESSAGE );
/* Send PUBLISH packet. Packet ID is not used for a QoS0 publish. */
xResult = MQTT_Publish( pxMQTTContext, &xMQTTPublishInfo, 0U );
configASSERT( xResult == MQTTSuccess );
}
/*-----------------------------------------------------------*/
static void prvMQTTUnsubscribeFromTopic( MQTTContext_t * pxMQTTContext )
{
MQTTStatus_t xResult;
MQTTSubscribeInfo_t xMQTTSubscription[ 1 ];
BaseType_t xStatus;
/* Some fields not used by this demo so start with everything at 0. */
memset( ( void * ) &xMQTTSubscription, 0x00, sizeof( xMQTTSubscription ) );
/* Unsubscribe to the mqttexampleTOPIC topic filter. */
xMQTTSubscription[ 0 ].qos = MQTTQoS0;
xMQTTSubscription[ 0 ].pTopicFilter = mqttexampleTOPIC;
xMQTTSubscription[ 0 ].topicFilterLength = ( uint16_t ) strlen( mqttexampleTOPIC );
/* Get next unique packet identifier */
usUnsubscribePacketIdentifier = MQTT_GetPacketId( pxMQTTContext );
/* Make sure the packet id obtained is valid. */
configASSERT( usUnsubscribePacketIdentifier != 0 );
/* Send UNSUBSCRIBE packet. */
xResult = MQTT_Unsubscribe( pxMQTTContext,
xMQTTSubscription,
sizeof( xMQTTSubscription ) / sizeof( MQTTSubscribeInfo_t ),
usUnsubscribePacketIdentifier );
configASSERT( xResult == MQTTSuccess );
}
/*-----------------------------------------------------------*/
static void prvMQTTProcessResponse( MQTTPacketInfo_t * pxIncomingPacket,
uint16_t usPacketId )
{
switch( pxIncomingPacket->type )
{
case MQTT_PACKET_TYPE_SUBACK:
LogInfo( ( "Subscribed to the topic %s.\r\n", mqttexampleTOPIC ) );
/* Make sure ACK packet identifier matches with Request packet identifier. */
configASSERT( usSubscribePacketIdentifier == usPacketId );
break;
case MQTT_PACKET_TYPE_UNSUBACK:
LogInfo( ( "Unsubscribed from the topic %s.\r\n", mqttexampleTOPIC ) );
/* Make sure ACK packet identifier matches with Request packet identifier. */
configASSERT( usUnsubscribePacketIdentifier == usPacketId );
break;
case MQTT_PACKET_TYPE_PINGRESP:
LogInfo( ( "Ping Response successfully received.\r\n" ) );
break;
/* Any other packet type is invalid. */
default:
LogWarn( ( "prvMQTTProcessResponse() called with unknown packet type:(%02X).\r\n",
pxIncomingPacket->type ) );
}
}
/*-----------------------------------------------------------*/
static void prvMQTTProcessIncomingPublish( MQTTPublishInfo_t * pxPublishInfo )
{
configASSERT( pxPublishInfo != NULL );
/* Process incoming Publish. */
LogInfo( ( "Incoming QoS : %d\n", pxPublishInfo->qos ) );
/* Verify the received publish is for the we have subscribed to. */
if( ( pxPublishInfo->topicNameLength == strlen( mqttexampleTOPIC ) ) &&
( 0 == strncmp( mqttexampleTOPIC, pxPublishInfo->pTopicName, pxPublishInfo->topicNameLength ) ) )
{
LogInfo( ( "\r\nIncoming Publish Topic Name: %.*s matches subscribed topic.\r\n"
"Incoming Publish Message : %.*s\r\n",
pxPublishInfo->topicNameLength,
pxPublishInfo->pTopicName,
pxPublishInfo->payloadLength,
pxPublishInfo->pPayload ) );
}
else
{
LogInfo( ( "Incoming Publish Topic Name: %.*s does not match subscribed topic.\r\n",
pxPublishInfo->topicNameLength,
pxPublishInfo->pTopicName ) );
}
}
/*-----------------------------------------------------------*/
static void prvEventCallback( MQTTContext_t * pxMQTTContext,
MQTTPacketInfo_t * pxPacketInfo,
uint16_t usPacketIdentifier,
MQTTPublishInfo_t * pxPublishInfo )
{
if( ( pxPacketInfo->type & 0xF0U ) == MQTT_PACKET_TYPE_PUBLISH )
{
prvMQTTProcessIncomingPublish( pxPublishInfo );
}
else
{
prvMQTTProcessResponse( pxPacketInfo, usPacketIdentifier );
}
}
/*-----------------------------------------------------------*/
static uint32_t prvGetTimeMs( void )
{
TickType_t xTickCount = 0;
uint32_t ulTimeMs = 0UL;
/* Get the current tick count. */
xTickCount = xTaskGetTickCount();
/* Convert the ticks to milliseconds. */
ulTimeMs = ( uint32_t ) xTickCount * _MILLISECONDS_PER_TICK;
/* Reduce ulGlobalEntryTimeMs from obtained time so as to always return the
* elapsed time in the application. */
ulTimeMs = ( uint32_t ) ( ulTimeMs - ulGlobalEntryTimeMs );
return ulTimeMs;
}
/*-----------------------------------------------------------*/

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/*
* 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!
*/
#ifndef FREERTOS_CONFIG_H
#define FREERTOS_CONFIG_H
/*-----------------------------------------------------------
* Application specific definitions.
*
* These definitions should be adjusted for your particular hardware and
* application requirements.
*
* THESE PARAMETERS ARE DESCRIBED WITHIN THE 'CONFIGURATION' SECTION OF THE
* FreeRTOS API DOCUMENTATION AVAILABLE ON THE FreeRTOS.org WEB SITE.
* http://www.freertos.org/a00110.html
*
* The bottom of this file contains some constants specific to running the UDP
* stack in this demo. Constants specific to FreeRTOS+TCP itself (rather than
* the demo) are contained in FreeRTOSIPConfig.h.
*----------------------------------------------------------*/
#define configUSE_PREEMPTION 1
#define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
#define configMAX_PRIORITIES ( 7 )
#define configTICK_RATE_HZ ( 1000 ) /* In this non-real time simulated environment the tick frequency has to be at least a multiple of the Win32 tick frequency, and therefore very slow. */
#define configMINIMAL_STACK_SIZE ( ( unsigned short ) 60 ) /* In this simulated case, the stack only has to hold one small structure as the real stack is part of the Win32 thread. */
#define configTOTAL_HEAP_SIZE ( ( size_t ) ( 2048U * 1024U ) )
#define configMAX_TASK_NAME_LEN ( 15 )
#define configUSE_TRACE_FACILITY 0
#define configUSE_16_BIT_TICKS 0
#define configIDLE_SHOULD_YIELD 1
#define configUSE_CO_ROUTINES 0
#define configUSE_MUTEXES 1
#define configUSE_RECURSIVE_MUTEXES 1
#define configQUEUE_REGISTRY_SIZE 0
#define configUSE_APPLICATION_TASK_TAG 0
#define configUSE_COUNTING_SEMAPHORES 1
#define configUSE_ALTERNATIVE_API 0
#define configNUM_THREAD_LOCAL_STORAGE_POINTERS 0
#define configENABLE_BACKWARD_COMPATIBILITY 1
#define configSUPPORT_STATIC_ALLOCATION 1
/* Hook function related definitions. */
#define configUSE_TICK_HOOK 0
#define configUSE_IDLE_HOOK 0
#define configUSE_MALLOC_FAILED_HOOK 0
#define configCHECK_FOR_STACK_OVERFLOW 0 /* Not applicable to the Win32 port. */
/* Software timer related definitions. */
#define configUSE_TIMERS 1
#define configTIMER_TASK_PRIORITY ( configMAX_PRIORITIES - 1 )
#define configTIMER_QUEUE_LENGTH 5
#define configTIMER_TASK_STACK_DEPTH ( configMINIMAL_STACK_SIZE * 2 )
/* Event group related definitions. */
#define configUSE_EVENT_GROUPS 1
/* Run time stats gathering configuration options. */
#define configGENERATE_RUN_TIME_STATS 0
/* Co-routine definitions. */
#define configUSE_CO_ROUTINES 0
#define configMAX_CO_ROUTINE_PRIORITIES ( 2 )
/* Set the following definitions to 1 to include the API function, or zero
* to exclude the API function. */
#define INCLUDE_vTaskPrioritySet 1
#define INCLUDE_uxTaskPriorityGet 1
#define INCLUDE_vTaskDelete 1
#define INCLUDE_vTaskCleanUpResources 0
#define INCLUDE_vTaskSuspend 1
#define INCLUDE_vTaskDelayUntil 1
#define INCLUDE_vTaskDelay 1
#define INCLUDE_uxTaskGetStackHighWaterMark 1
#define INCLUDE_xTaskGetSchedulerState 1
#define INCLUDE_xTimerGetTimerTaskHandle 0
#define INCLUDE_xTaskGetIdleTaskHandle 0
#define INCLUDE_xQueueGetMutexHolder 1
#define INCLUDE_eTaskGetState 1
#define INCLUDE_xEventGroupSetBitsFromISR 1
#define INCLUDE_xTimerPendFunctionCall 1
#define INCLUDE_pcTaskGetTaskName 1
/* This demo makes use of one or more example stats formatting functions. These
* format the raw data provided by the uxTaskGetSystemState() function in to human
* readable ASCII form. See the notes in the implementation of vTaskList() within
* FreeRTOS/Source/tasks.c for limitations. configUSE_STATS_FORMATTING_FUNCTIONS
* is set to 2 so the formatting functions are included without the stdio.h being
* included in tasks.c. That is because this project defines its own sprintf()
* functions. */
#define configUSE_STATS_FORMATTING_FUNCTIONS 1
/* Assert call defined for debug builds. */
#ifdef _DEBUG
extern void vAssertCalled( const char * pcFile,
uint32_t ulLine );
#define configASSERT( x ) if( ( x ) == 0 ) vAssertCalled( __FILE__, __LINE__ )
#endif /* _DEBUG */
/* Application specific definitions follow. **********************************/
/* Only used when running in the FreeRTOS Windows simulator. Defines the
* priority of the task used to simulate Ethernet interrupts. */
#define configMAC_ISR_SIMULATOR_PRIORITY ( configMAX_PRIORITIES - 1 )
/* This demo creates a virtual network connection by accessing the raw Ethernet
* or WiFi data to and from a real network connection. Many computers have more
* than one real network port, and configNETWORK_INTERFACE_TO_USE is used to tell
* the demo which real port should be used to create the virtual port. The ports
* available are displayed on the console when the application is executed. For
* example, on my development laptop setting configNETWORK_INTERFACE_TO_USE to 4
* results in the wired network being used, while setting
* configNETWORK_INTERFACE_TO_USE to 2 results in the wireless network being
* used. */
#define configNETWORK_INTERFACE_TO_USE 1L
/* The address of an echo server is only left in this project as it doubles as
* the address to which logging is sent should UDP logging be enabled. */
#define configECHO_SERVER_ADDR0 192
#define configECHO_SERVER_ADDR1 168
#define configECHO_SERVER_ADDR2 0
#define configECHO_SERVER_ADDR3 11
/* 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 0x11
#define configMAC_ADDR3 0x11
#define configMAC_ADDR4 0x11
#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 10
#define configIP_ADDR1 10
#define configIP_ADDR2 10
#define configIP_ADDR3 200
/* 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 10
#define configGATEWAY_ADDR1 10
#define configGATEWAY_ADDR2 10
#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 208
#define configDNS_SERVER_ADDR1 67
#define configDNS_SERVER_ADDR2 222
#define configDNS_SERVER_ADDR3 222
/* 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 0
#define configNET_MASK2 0
#define configNET_MASK3 0
/* The UDP port to which print messages are sent. */
#define configPRINT_PORT ( 15000 )
/* Task pool definitions for the demos of IoT Libraries. */
#define configTASKPOOL_ENABLE_ASSERTS 1
#define configTASKPOOL_NUMBER_OF_WORKERS 1
#define configTASKPOOL_WORKER_PRIORITY tskIDLE_PRIORITY
#define configTASKPOOL_WORKER_STACK_SIZE_BYTES 2048
#if ( defined( _MSC_VER ) && ( _MSC_VER <= 1600 ) && !defined( snprintf ) )
/* Map to Windows names. */
#define snprintf _snprintf
#define vsnprintf _vsnprintf
#endif
/* Visual studio does not have an implementation of strcasecmp(). */
#define strcasecmp _stricmp
#define strncasecmp _strnicmp
#define strcmpi _strcmpi
/* 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,
... );
#define configPRINTF( X ) vLoggingPrintf X
#endif /* FREERTOS_CONFIG_H */

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/*
* 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!
*/
/*****************************************************************************
*
* 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 0
#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 ( 2000 )
#define ipconfigSOCK_DEFAULT_SEND_BLOCK_TIME ( 5000 )
/* Include support for LLMNR: Link-local Multicast Name Resolution
* (non-Microsoft) */
#define ipconfigUSE_LLMNR ( 0 )
/* Include support for NBNS: NetBIOS Name Service (Microsoft) */
#define ipconfigUSE_NBNS ( 0 )
/* 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 ( 32 )
#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 1
/* 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 the TCP socket wake context with a callback. */
#define ipconfigSOCKET_HAS_USER_WAKE_CALLBACK_WITH_CONTEXT ( 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 */

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[{000214A0-0000-0000-C000-000000000046}]
Prop3=19,11
[InternetShortcut]
IDList=
URL=https://www.freertos.org/mqtt/

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87
FreeRTOS-Plus/Demo/FreeRTOS-IoT-Libraries-LTS-Beta2/mqtt/mqtt_plain_text/demo_config.h Normal file
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/*
* 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!
*/
#ifndef DEMO_CONFIG_H
#define DEMO_CONFIG_H
/**************************************************/
/******* DO NOT CHANGE the following order ********/
/**************************************************/
/* Include logging header files and define logging macros in the following order:
* 1. Include the header file "logging_levels.h".
* 2. Define the LIBRARY_LOG_NAME and LIBRARY_LOG_LEVEL macros depending on
* the logging configuration for DEMO.
* 3. Include the header file "logging_stack.h", if logging is enabled for DEMO.
*/
#include "logging_levels.h"
/* Logging configuration for the Demo. */
#ifndef LIBRARY_LOG_NAME
#define LIBRARY_LOG_NAME "MQTTDemo"
#endif
#ifndef LIBRARY_LOG_LEVEL
#define LIBRARY_LOG_LEVEL LOG_INFO
#endif
#include "logging_stack.h"
/************ End of logging configuration ****************/
/**
* @brief The MQTT client identifier used in this example. Each client identifier
* must be unique so edit as required to ensure no two clients connecting to the
* same broker use the same client identifier.
*
* #define democonfigCLIENT_IDENTIFIER "insert here."
*/
/**
* @brief MQTT broker end point to connect to.
*
* #define democonfigMQTT_BROKER_ENDPOINT "insert here."
*/
/**
* @brief The port to use for the demo.
*
* #define democonfigMQTT_BROKER_PORT ( insert here. )
*/
/**
* @brief Set the stack size of the main demo task.
*
* In the Windows port, this stack only holds a structure. The actual
* stack is created by an operating system thread.
*/
#define democonfigDEMO_STACKSIZE configMINIMAL_STACK_SIZE
#endif /* DEMO_CONFIG_H */

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/*
* 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!
*/
#ifndef MQTT_CONFIG_H_
#define MQTT_CONFIG_H_
/**************************************************/
/******* DO NOT CHANGE the following order ********/
/**************************************************/
/* Include logging header files and define logging macros in the following order:
* 1. Include the header file "logging_levels.h".
* 2. Define the LIBRARY_LOG_NAME and LIBRARY_LOG_LEVEL macros depending on
* the logging configuration for MQTT.
* 3. Include the header file "logging_stack.h", if logging is enabled for MQTT.
*/
#include "logging_levels.h"
/* Logging configuration for the MQTT library. */
#ifndef LIBRARY_LOG_NAME
#define LIBRARY_LOG_NAME "MQTT"
#endif
#ifndef LIBRARY_LOG_LEVEL
#define LIBRARY_LOG_LEVEL LOG_NONE
#endif
#include "logging_stack.h"
/************ End of logging configuration ****************/
/**
* @brief The maximum number of MQTT PUBLISH messages that may be pending
* acknowledgement at any time.
*
* QoS 1 and 2 MQTT PUBLISHes require acknowledgment from the server before
* they can be completed. While they are awaiting the acknowledgment, the
* client must maintain information about their state. The value of this
* macro sets the limit on how many simultaneous PUBLISH states an MQTT
* context maintains.
*/
#define MQTT_STATE_ARRAY_MAX_COUNT 10U
#endif /* ifndef MQTT_CONFIG_H_ */

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Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio Version 16
VisualStudioVersion = 16.0.29215.179
MinimumVisualStudioVersion = 10.0.40219.1
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "RTOSDemo", "WIN32.vcxproj", "{C686325E-3261-42F7-AEB1-DDE5280E1CEB}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Win32 = Debug|Win32
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
{C686325E-3261-42F7-AEB1-DDE5280E1CEB}.Debug|Win32.ActiveCfg = Debug|Win32
{C686325E-3261-42F7-AEB1-DDE5280E1CEB}.Debug|Win32.Build.0 = Debug|Win32
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
EndGlobalSection
GlobalSection(ExtensibilityGlobals) = postSolution
SolutionGuid = {150F08BF-9D61-4CC2-8DBF-1335172A1EA4}
EndGlobalSection
GlobalSection(TestCaseManagementSettings) = postSolution
CategoryFile = FreeRTOS_Plus_TCP_Minimal.vsmdi
EndGlobalSection
EndGlobal

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/*
* 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.
*/
/* Standard includes. */
#include <string.h>
/* FreeRTOS includes. */
#include "FreeRTOS.h"
#include "atomic.h"
#include "semphr.h"
/* FreeRTOS+TCP includes. */
#include "FreeRTOS_IP.h"
#include "FreeRTOS_Sockets.h"
/* Transport interface include. */
#include "transport_interface_freertos.h"
/* Maximum number of times to call FreeRTOS_recv when initiating a graceful shutdown. */
#ifndef TRANSPORT_FREERTOS_SHUTDOWN_LOOPS
#define TRANSPORT_FREERTOS_SHUTDOWN_LOOPS ( 3 )
#endif
BaseType_t Transport_FreeRTOS_Connect( NetworkContext_t * pNetworkContext,
const char * pHostName,
uint16_t port,
uint32_t receiveTimeoutMs )
{
Socket_t tcpSocket = FREERTOS_INVALID_SOCKET;
BaseType_t socketStatus = 0;
struct freertos_sockaddr serverAddress = { 0 };
TickType_t receiveTimeout = pdMS_TO_TICKS( receiveTimeoutMs );
/* Create a new TCP socket. */
tcpSocket = FreeRTOS_socket( FREERTOS_AF_INET, FREERTOS_SOCK_STREAM, FREERTOS_IPPROTO_TCP );
if( tcpSocket == FREERTOS_INVALID_SOCKET )
{
LogError( ( "Failed to create new socket." ) );
socketStatus = -1;
}
else
{
LogDebug( ( "Created new TCP socket." ) );
socketStatus = FreeRTOS_setsockopt( tcpSocket,
0,
FREERTOS_SO_RCVTIMEO,
&receiveTimeout,
sizeof( TickType_t ) );
if( socketStatus != 0 )
{
LogError( ( "Failed to set socket receive timeout." ) );
}
}
if( socketStatus == 0 )
{
/* Establish connection. */
serverAddress.sin_family = FREERTOS_AF_INET;
serverAddress.sin_port = FreeRTOS_htons( port );
serverAddress.sin_addr = FreeRTOS_gethostbyname( pHostName );
serverAddress.sin_len = ( uint8_t ) sizeof( serverAddress );
/* Check for errors from DNS lookup. */
if( serverAddress.sin_addr == 0 )
{
LogError( ( "Failed to resolve %s.", pHostName ) );
socketStatus = -1;
}
}
if( socketStatus == 0 )
{
socketStatus = FreeRTOS_connect( tcpSocket, &serverAddress, sizeof( serverAddress ) );
}
/* Clean up on failure. */
if( socketStatus != 0 )
{
if( tcpSocket != FREERTOS_INVALID_SOCKET )
{
FreeRTOS_closesocket( tcpSocket );
}
}
else
{
/* Set the socket. */
pNetworkContext->tcpSocket = tcpSocket;
LogDebug( ( "TCP Connection to %s established.", pHostName ) );
}
return socketStatus;
}
void Transport_FreeRTOS_Disconnect( const NetworkContext_t * pNetworkContext )
{
BaseType_t waitForShutdownLoopCount = 0;
uint8_t pDummyBuffer[ 2 ];
if( pNetworkContext->tcpSocket != FREERTOS_INVALID_SOCKET )
{
/* Initiate graceful shutdown. */
( void ) FreeRTOS_shutdown( pNetworkContext->tcpSocket, FREERTOS_SHUT_RDWR );
/* Wait for the socket to disconnect gracefully (indicated by FreeRTOS_recv()
* returning a FREERTOS_EINVAL error) before closing the socket. */
while( FreeRTOS_recv( pNetworkContext->tcpSocket, pDummyBuffer, sizeof( pDummyBuffer ), 0 ) >= 0 )
{
/* We don't need to delay since FreeRTOS_recv should already have a timeout. */
if( ++waitForShutdownLoopCount >= TRANSPORT_FREERTOS_SHUTDOWN_LOOPS )
{
break;
}
}
( void ) FreeRTOS_closesocket( pNetworkContext->tcpSocket );
}
}
int32_t Transport_FreeRTOS_recv( NetworkContext_t * pNetworkContext,
void * pBuffer,
size_t bytesToRecv )
{
int32_t socketStatus = 0;
socketStatus = FreeRTOS_recv( pNetworkContext->tcpSocket, pBuffer, bytesToRecv, 0 );
return socketStatus;
}
int32_t Transport_FreeRTOS_send( NetworkContext_t * pNetworkContext,
const void * pBuffer,
size_t bytesToSend )
{
int32_t socketStatus = 0;
socketStatus = FreeRTOS_send( pNetworkContext->tcpSocket, pBuffer, bytesToSend, 0 );
return socketStatus;
}

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/*
* 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.
*/
#ifndef TRANSPORT_INTERFACE_FREERTOS_H_
#define TRANSPORT_INTERFACE_FREERTOS_H_
/**************************************************/
/******* DO NOT CHANGE the following order ********/
/**************************************************/
/* Logging related header files are required to be included in the following order:
* 1. Include the header file "logging_levels.h".
* 2. Define LIBRARY_LOG_NAME and LIBRARY_LOG_LEVEL.
* 3. Include the header file "logging_stack.h".
*/
/* Include header that defines log levels. */
#include "logging_levels.h"
/* Logging configuration for the Sockets. */
#ifndef LIBRARY_LOG_NAME
#define LIBRARY_LOG_NAME "FreeRTOSTransport"
#endif
#ifndef LIBRARY_LOG_LEVEL
#define LIBRARY_LOG_LEVEL LOG_DEBUG
#endif
#include "logging_stack.h"
/************ End of logging configuration ****************/
/* FreeRTOS+TCP include. */
#include "FreeRTOS_Sockets.h"
/* Transport interface include. */
#include "transport_interface.h"
/**
* @brief Network context definition for FreeRTOS sockets.
*/
struct NetworkContext
{
Socket_t tcpSocket;
};
/**
* @brief Create a TCP connection with FreeRTOS sockets.
*
* @param[out] pNetworkContext Pointer to a network context to contain the
* initialized socket handle.
* @param[in] pHostName The hostname of the remote endpoint.
* @param[in] port The destination port.
* @param[in] receiveTimeoutMs Receive socket timeout.
*
* @return Non-zero value on error, 0 on success.
*/
BaseType_t Transport_FreeRTOS_Connect( NetworkContext_t * pNetworkContext,
const char * pHostName,
uint16_t port,
uint32_t receiveTimeoutMs );
/**
* @brief Gracefully disconnect an established TCP connection.
*
* @param[in] pNetworkContext Network context containing the TCP socket handle.
*/
void Transport_FreeRTOS_Disconnect( const NetworkContext_t * pNetworkContext );
/**
* @brief Receives data from an established TCP connection.
*
* @param[in] pNetworkContext The network context containing the TCP socket
* handle.
* @param[out] pBuffer Buffer to receive bytes into.
* @param[in] bytesToRecv Number of bytes to receive from the network.
*
* @return Number of bytes received if successful; 0 if the socket times out;
* Negative value on error.
*/
int32_t Transport_FreeRTOS_recv( NetworkContext_t * pNetworkContext,
void * pBuffer,
size_t bytesToRecv );
/**
* @brief Sends data over an established TCP connection.
*
* @param[in] pNetworkContext The network context containing the TCP socket
* handle.
* @param[in] pBuffer Buffer containing the bytes to send.
* @param[in] bytesToSend Number of bytes to send from the buffer.
*
* @return Number of bytes sent on success; else a negative value.
*/
int32_t Transport_FreeRTOS_send( NetworkContext_t * pNetworkContext,
const void * pBuffer,
size_t bytesToSend );
#endif /* ifndef TRANSPORT_INTERFACE_FREERTOS_H_ */