Azure IoT / Mbed 2 deprecated simplesample_amqp

A simple IoTHub sample using AMQP as transport

Dependencies:   EthernetInterface NTPClient iothub_amqp_transport iothub_client mbed-rtos mbed azure_c_shared_utility serializer wolfSSL azure_uamqp_c

This sample showcases the usage of Azure IoT client libraries with the AMQP transport for sending/receiving raw messages from an IoT Hub.

simplesample_amqp.c@29:12a5fd69f49e, 2016-03-11 (annotated)

Committer:
Azure.IoT Build
Date:
Fri Mar 11 17:03:54 2016 -0800
Revision:
29:12a5fd69f49e
Parent:
28:0b867098c0c8
Child:
35:862d7bc6755c
1.0.2

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AzureIoTClient 16:b2c6de619743 1 // Copyright (c) Microsoft. All rights reserved.
AzureIoTClient 16:b2c6de619743 2 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
AzureIoTClient 16:b2c6de619743 3
AzureIoTClient 16:b2c6de619743 4 #include <stdlib.h>
AzureIoTClient 16:b2c6de619743 5
AzureIoTClient 16:b2c6de619743 6 #include <stdio.h>
AzureIoTClient 16:b2c6de619743 7 #include <stdint.h>
AzureIoTClient 16:b2c6de619743 8
AzureIoTClient 16:b2c6de619743 9 #include "serializer.h"
AzureIoTClient 16:b2c6de619743 10 #include "threadapi.h"
AzureIoTClient 16:b2c6de619743 11 #include "sastoken.h"
AzureIoTClient 16:b2c6de619743 12 #include "iothub_client.h"
AzureIoTClient 16:b2c6de619743 13 #include "iothubtransportamqp.h"
AzureIoTClient 16:b2c6de619743 14 #include "iothub_client_ll.h"
Azure.IoT Build 25:9cb9b0c15218 15 #include "platform.h"
AzureIoTClient 16:b2c6de619743 16
AzureIoTClient 16:b2c6de619743 17 #ifdef MBED_BUILD_TIMESTAMP
AzureIoTClient 16:b2c6de619743 18 #include "certs.h"
AzureIoTClient 16:b2c6de619743 19 #endif // MBED_BUILD_TIMESTAMP
AzureIoTClient 16:b2c6de619743 20
AzureIoTClient 18:a3ec1aab72dc 21 /*String containing Hostname, Device Id & Device Key in the format: */
AzureIoTClient 18:a3ec1aab72dc 22 /* "HostName=<host_name>;DeviceId=<device_id>;SharedAccessKey=<device_key>" */
AzureIoTClient 16:b2c6de619743 23 static const char* connectionString = "[device connection string]";
AzureIoTClient 16:b2c6de619743 24
AzureIoTClient 16:b2c6de619743 25 // Define the Model
AzureIoTClient 16:b2c6de619743 26 BEGIN_NAMESPACE(WeatherStation);
AzureIoTClient 16:b2c6de619743 27
AzureIoTClient 16:b2c6de619743 28 DECLARE_MODEL(ContosoAnemometer,
AzureIoTClient 16:b2c6de619743 29 WITH_DATA(ascii_char_ptr, DeviceId),
AzureIoTClient 19:eae21b79ceff 30 WITH_DATA(int, WindSpeed),
AzureIoTClient 16:b2c6de619743 31 WITH_ACTION(TurnFanOn),
AzureIoTClient 16:b2c6de619743 32 WITH_ACTION(TurnFanOff),
AzureIoTClient 16:b2c6de619743 33 WITH_ACTION(SetAirResistance, int, Position)
AzureIoTClient 16:b2c6de619743 34 );
AzureIoTClient 16:b2c6de619743 35
AzureIoTClient 16:b2c6de619743 36 END_NAMESPACE(WeatherStation);
AzureIoTClient 16:b2c6de619743 37
AzureIoTClient 16:b2c6de619743 38 DEFINE_ENUM_STRINGS(IOTHUB_CLIENT_CONFIRMATION_RESULT, IOTHUB_CLIENT_CONFIRMATION_RESULT_VALUES)
AzureIoTClient 16:b2c6de619743 39
AzureIoTClient 16:b2c6de619743 40 EXECUTE_COMMAND_RESULT TurnFanOn(ContosoAnemometer* device)
AzureIoTClient 16:b2c6de619743 41 {
AzureIoTClient 16:b2c6de619743 42 (void)device;
AzureIoTClient 16:b2c6de619743 43 (void)printf("Turning fan on.\r\n");
AzureIoTClient 16:b2c6de619743 44 return EXECUTE_COMMAND_SUCCESS;
AzureIoTClient 16:b2c6de619743 45 }
AzureIoTClient 16:b2c6de619743 46
AzureIoTClient 16:b2c6de619743 47 EXECUTE_COMMAND_RESULT TurnFanOff(ContosoAnemometer* device)
AzureIoTClient 16:b2c6de619743 48 {
AzureIoTClient 16:b2c6de619743 49 (void)device;
AzureIoTClient 16:b2c6de619743 50 (void)printf("Turning fan off.\r\n");
AzureIoTClient 16:b2c6de619743 51 return EXECUTE_COMMAND_SUCCESS;
AzureIoTClient 16:b2c6de619743 52 }
AzureIoTClient 16:b2c6de619743 53
AzureIoTClient 16:b2c6de619743 54 EXECUTE_COMMAND_RESULT SetAirResistance(ContosoAnemometer* device, int Position)
AzureIoTClient 16:b2c6de619743 55 {
AzureIoTClient 16:b2c6de619743 56 (void)device;
AzureIoTClient 16:b2c6de619743 57 (void)printf("Setting Air Resistance Position to %d.\r\n", Position);
AzureIoTClient 16:b2c6de619743 58 return EXECUTE_COMMAND_SUCCESS;
AzureIoTClient 16:b2c6de619743 59 }
AzureIoTClient 16:b2c6de619743 60
AzureIoTClient 16:b2c6de619743 61 void sendCallback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback)
AzureIoTClient 16:b2c6de619743 62 {
AzureIoTClient 16:b2c6de619743 63 int messageTrackingId = (intptr_t)userContextCallback;
AzureIoTClient 16:b2c6de619743 64
AzureIoTClient 16:b2c6de619743 65 (void)printf("Message Id: %d Received.\r\n", messageTrackingId);
AzureIoTClient 16:b2c6de619743 66
AzureIoTClient 16:b2c6de619743 67 (void)printf("Result Call Back Called! Result is: %s \r\n", ENUM_TO_STRING(IOTHUB_CLIENT_CONFIRMATION_RESULT, result));
AzureIoTClient 16:b2c6de619743 68 }
AzureIoTClient 16:b2c6de619743 69
AzureIoTClient 16:b2c6de619743 70
AzureIoTClient 16:b2c6de619743 71 static void sendMessage(IOTHUB_CLIENT_HANDLE iotHubClientHandle, const unsigned char* buffer, size_t size)
AzureIoTClient 16:b2c6de619743 72 {
AzureIoTClient 16:b2c6de619743 73 static unsigned int messageTrackingId;
AzureIoTClient 16:b2c6de619743 74 IOTHUB_MESSAGE_HANDLE messageHandle = IoTHubMessage_CreateFromByteArray(buffer, size);
AzureIoTClient 16:b2c6de619743 75 if (messageHandle == NULL)
AzureIoTClient 16:b2c6de619743 76 {
AzureIoTClient 16:b2c6de619743 77 printf("unable to create a new IoTHubMessage\r\n");
AzureIoTClient 16:b2c6de619743 78 }
AzureIoTClient 16:b2c6de619743 79 else
AzureIoTClient 16:b2c6de619743 80 {
AzureIoTClient 16:b2c6de619743 81 if (IoTHubClient_SendEventAsync(iotHubClientHandle, messageHandle, sendCallback, (void*)(uintptr_t)messageTrackingId) != IOTHUB_CLIENT_OK)
AzureIoTClient 16:b2c6de619743 82 {
AzureIoTClient 16:b2c6de619743 83 printf("failed to hand over the message to IoTHubClient");
AzureIoTClient 16:b2c6de619743 84 }
AzureIoTClient 16:b2c6de619743 85 else
AzureIoTClient 16:b2c6de619743 86 {
AzureIoTClient 16:b2c6de619743 87 printf("IoTHubClient accepted the message for delivery\r\n");
AzureIoTClient 16:b2c6de619743 88 }
AzureIoTClient 16:b2c6de619743 89
AzureIoTClient 16:b2c6de619743 90 IoTHubMessage_Destroy(messageHandle);
AzureIoTClient 16:b2c6de619743 91 }
AzureIoTClient 16:b2c6de619743 92 free((void*)buffer);
AzureIoTClient 16:b2c6de619743 93 messageTrackingId++;
AzureIoTClient 16:b2c6de619743 94 }
AzureIoTClient 16:b2c6de619743 95
AzureIoTClient 16:b2c6de619743 96 static IOTHUBMESSAGE_DISPOSITION_RESULT IoTHubMessage(IOTHUB_MESSAGE_HANDLE message, void* userContextCallback)
AzureIoTClient 16:b2c6de619743 97 {
AzureIoTClient 16:b2c6de619743 98 IOTHUBMESSAGE_DISPOSITION_RESULT result;
AzureIoTClient 16:b2c6de619743 99 const unsigned char* buffer;
AzureIoTClient 16:b2c6de619743 100 size_t size;
AzureIoTClient 16:b2c6de619743 101 if (IoTHubMessage_GetByteArray(message, &buffer, &size) != IOTHUB_MESSAGE_OK)
AzureIoTClient 16:b2c6de619743 102 {
AzureIoTClient 16:b2c6de619743 103 printf("unable to IoTHubMessage_GetByteArray\r\n");
AzureIoTClient 16:b2c6de619743 104 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 16:b2c6de619743 105 }
AzureIoTClient 16:b2c6de619743 106 else
AzureIoTClient 16:b2c6de619743 107 {
AzureIoTClient 16:b2c6de619743 108 /*buffer is not zero terminated*/
AzureIoTClient 16:b2c6de619743 109 char* temp = malloc(size + 1);
AzureIoTClient 16:b2c6de619743 110 if (temp == NULL)
AzureIoTClient 16:b2c6de619743 111 {
AzureIoTClient 16:b2c6de619743 112 printf("failed to malloc\r\n");
AzureIoTClient 16:b2c6de619743 113 result = EXECUTE_COMMAND_ERROR;
AzureIoTClient 16:b2c6de619743 114 }
AzureIoTClient 16:b2c6de619743 115 else
AzureIoTClient 16:b2c6de619743 116 {
AzureIoTClient 16:b2c6de619743 117 memcpy(temp, buffer, size);
AzureIoTClient 16:b2c6de619743 118 temp[size] = '\0';
AzureIoTClient 16:b2c6de619743 119 EXECUTE_COMMAND_RESULT executeCommandResult = EXECUTE_COMMAND(userContextCallback, temp);
AzureIoTClient 16:b2c6de619743 120 result =
AzureIoTClient 16:b2c6de619743 121 (executeCommandResult == EXECUTE_COMMAND_ERROR) ? IOTHUBMESSAGE_ABANDONED :
AzureIoTClient 16:b2c6de619743 122 (executeCommandResult == EXECUTE_COMMAND_SUCCESS) ? IOTHUBMESSAGE_ACCEPTED :
AzureIoTClient 16:b2c6de619743 123 IOTHUBMESSAGE_REJECTED;
AzureIoTClient 16:b2c6de619743 124 free(temp);
AzureIoTClient 16:b2c6de619743 125 }
AzureIoTClient 16:b2c6de619743 126 }
AzureIoTClient 16:b2c6de619743 127 return result;
AzureIoTClient 16:b2c6de619743 128 }
AzureIoTClient 16:b2c6de619743 129
AzureIoTClient 16:b2c6de619743 130 void simplesample_amqp_run(void)
AzureIoTClient 16:b2c6de619743 131 {
Azure.IoT Build 29:12a5fd69f49e 132 if (platform_init() != 0)
AzureIoTClient 16:b2c6de619743 133 {
Azure.IoT Build 29:12a5fd69f49e 134 printf("Failed to initialize the platform.\r\n");
AzureIoTClient 16:b2c6de619743 135 }
AzureIoTClient 16:b2c6de619743 136 else
AzureIoTClient 16:b2c6de619743 137 {
Azure.IoT Build 29:12a5fd69f49e 138 if (serializer_init(NULL) != SERIALIZER_OK)
AzureIoTClient 16:b2c6de619743 139 {
Azure.IoT Build 29:12a5fd69f49e 140 (void)printf("Failed on serializer_init\r\n");
AzureIoTClient 16:b2c6de619743 141 }
AzureIoTClient 16:b2c6de619743 142 else
AzureIoTClient 16:b2c6de619743 143 {
Azure.IoT Build 29:12a5fd69f49e 144 /* Setup IoTHub client configuration */
Azure.IoT Build 29:12a5fd69f49e 145 IOTHUB_CLIENT_HANDLE iotHubClientHandle = IoTHubClient_CreateFromConnectionString(connectionString, AMQP_Protocol);
Azure.IoT Build 29:12a5fd69f49e 146 srand((unsigned int)time(NULL));
Azure.IoT Build 29:12a5fd69f49e 147 int avgWindSpeed = 10;
Azure.IoT Build 29:12a5fd69f49e 148
Azure.IoT Build 29:12a5fd69f49e 149 if (iotHubClientHandle == NULL)
Azure.IoT Build 26:9662f727e974 150 {
Azure.IoT Build 29:12a5fd69f49e 151 (void)printf("Failed on IoTHubClient_Create\r\n");
AzureIoTClient 16:b2c6de619743 152 }
AzureIoTClient 16:b2c6de619743 153 else
AzureIoTClient 16:b2c6de619743 154 {
Azure.IoT Build 29:12a5fd69f49e 155 #ifdef MBED_BUILD_TIMESTAMP
Azure.IoT Build 29:12a5fd69f49e 156 // For mbed add the certificate information
Azure.IoT Build 29:12a5fd69f49e 157 if (IoTHubClient_SetOption(iotHubClientHandle, "TrustedCerts", certificates) != IOTHUB_CLIENT_OK)
Azure.IoT Build 29:12a5fd69f49e 158 {
Azure.IoT Build 29:12a5fd69f49e 159 (void)printf("failure to set option \"TrustedCerts\"\r\n");
Azure.IoT Build 29:12a5fd69f49e 160 }
Azure.IoT Build 29:12a5fd69f49e 161 #endif // MBED_BUILD_TIMESTAMP
Azure.IoT Build 26:9662f727e974 162
Azure.IoT Build 29:12a5fd69f49e 163 ContosoAnemometer* myWeather = CREATE_MODEL_INSTANCE(WeatherStation, ContosoAnemometer);
Azure.IoT Build 29:12a5fd69f49e 164 if (myWeather == NULL)
Azure.IoT Build 25:9cb9b0c15218 165 {
Azure.IoT Build 29:12a5fd69f49e 166 (void)printf("Failed on CREATE_MODEL_INSTANCE\r\n");
AzureIoTClient 16:b2c6de619743 167 }
AzureIoTClient 16:b2c6de619743 168 else
AzureIoTClient 16:b2c6de619743 169 {
Azure.IoT Build 29:12a5fd69f49e 170 unsigned char* destination;
Azure.IoT Build 29:12a5fd69f49e 171 size_t destinationSize;
AzureIoTClient 16:b2c6de619743 172
Azure.IoT Build 29:12a5fd69f49e 173 if (IoTHubClient_SetMessageCallback(iotHubClientHandle, IoTHubMessage, myWeather) != IOTHUB_CLIENT_OK)
AzureIoTClient 16:b2c6de619743 174 {
Azure.IoT Build 29:12a5fd69f49e 175 printf("unable to IoTHubClient_SetMessageCallback\r\n");
AzureIoTClient 16:b2c6de619743 176 }
AzureIoTClient 16:b2c6de619743 177 else
AzureIoTClient 16:b2c6de619743 178 {
Azure.IoT Build 29:12a5fd69f49e 179 myWeather->DeviceId = "myFirstDevice";
Azure.IoT Build 29:12a5fd69f49e 180 myWeather->WindSpeed = avgWindSpeed + (rand() % 4 + 2);
AzureIoTClient 16:b2c6de619743 181
Azure.IoT Build 29:12a5fd69f49e 182 if (SERIALIZE(&destination, &destinationSize, myWeather->DeviceId, myWeather->WindSpeed) != IOT_AGENT_OK)
Azure.IoT Build 29:12a5fd69f49e 183 {
Azure.IoT Build 29:12a5fd69f49e 184 (void)printf("Failed to serialize\r\n");
Azure.IoT Build 29:12a5fd69f49e 185 }
Azure.IoT Build 29:12a5fd69f49e 186 else
Azure.IoT Build 29:12a5fd69f49e 187 {
Azure.IoT Build 29:12a5fd69f49e 188 sendMessage(iotHubClientHandle, destination, destinationSize);
Azure.IoT Build 29:12a5fd69f49e 189 }
Azure.IoT Build 29:12a5fd69f49e 190
Azure.IoT Build 29:12a5fd69f49e 191 /* wait for commands */
Azure.IoT Build 29:12a5fd69f49e 192 (void)getchar();
Azure.IoT Build 29:12a5fd69f49e 193 }
Azure.IoT Build 29:12a5fd69f49e 194 DESTROY_MODEL_INSTANCE(myWeather);
AzureIoTClient 16:b2c6de619743 195 }
Azure.IoT Build 29:12a5fd69f49e 196 IoTHubClient_Destroy(iotHubClientHandle);
AzureIoTClient 16:b2c6de619743 197 }
Azure.IoT Build 29:12a5fd69f49e 198 serializer_deinit();
AzureIoTClient 16:b2c6de619743 199 }
Azure.IoT Build 29:12a5fd69f49e 200 platform_deinit();
AzureIoTClient 16:b2c6de619743 201 }
AzureIoTClient 16:b2c6de619743 202 }
AzureIoTClient 16:b2c6de619743 203