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@64:a1b8a60c0a5b, 2017-05-08 (annotated)

Committer:
AzureIoTClient
Date:
Mon May 08 10:53:01 2017 -0700
Revision:
64:a1b8a60c0a5b
Parent:
56:68f0d4c20dea
Child:
74:b684f612f838
1.1.14

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
Azure.IoT.Build 52:595dd76f48d2 9 #ifdef ARDUINO
Azure.IoT.Build 52:595dd76f48d2 10 #include "AzureIoTHub.h"
Azure.IoT.Build 52:595dd76f48d2 11 #else
AzureIoTClient 16:b2c6de619743 12 #include "serializer.h"
AzureIoTClient 35:862d7bc6755c 13 #include "azure_c_shared_utility/threadapi.h"
AzureIoTClient 35:862d7bc6755c 14 #include "azure_c_shared_utility/sastoken.h"
Azure.IoT Build 42:6bb5884a0648 15 #include "azure_c_shared_utility/platform.h"
AzureIoTClient 16:b2c6de619743 16 #include "iothub_client.h"
AzureIoTClient 16:b2c6de619743 17 #include "iothubtransportamqp.h"
AzureIoTClient 16:b2c6de619743 18 #include "iothub_client_ll.h"
Azure.IoT.Build 52:595dd76f48d2 19 #endif
AzureIoTClient 16:b2c6de619743 20
AzureIoTClient 16:b2c6de619743 21 #ifdef MBED_BUILD_TIMESTAMP
AzureIoTClient 16:b2c6de619743 22 #include "certs.h"
AzureIoTClient 16:b2c6de619743 23 #endif // MBED_BUILD_TIMESTAMP
AzureIoTClient 16:b2c6de619743 24
AzureIoTClient 18:a3ec1aab72dc 25 /*String containing Hostname, Device Id & Device Key in the format: */
AzureIoTClient 18:a3ec1aab72dc 26 /* "HostName=<host_name>;DeviceId=<device_id>;SharedAccessKey=<device_key>" */
AzureIoTClient 16:b2c6de619743 27 static const char* connectionString = "[device connection string]";
AzureIoTClient 16:b2c6de619743 28
AzureIoTClient 16:b2c6de619743 29 // Define the Model
AzureIoTClient 16:b2c6de619743 30 BEGIN_NAMESPACE(WeatherStation);
AzureIoTClient 16:b2c6de619743 31
AzureIoTClient 16:b2c6de619743 32 DECLARE_MODEL(ContosoAnemometer,
AzureIoTClient 16:b2c6de619743 33 WITH_DATA(ascii_char_ptr, DeviceId),
AzureIoTClient 19:eae21b79ceff 34 WITH_DATA(int, WindSpeed),
AzureIoTClient 64:a1b8a60c0a5b 35 WITH_DATA(float, Temperature),
AzureIoTClient 64:a1b8a60c0a5b 36 WITH_DATA(float, Humidity),
AzureIoTClient 16:b2c6de619743 37 WITH_ACTION(TurnFanOn),
AzureIoTClient 16:b2c6de619743 38 WITH_ACTION(TurnFanOff),
AzureIoTClient 16:b2c6de619743 39 WITH_ACTION(SetAirResistance, int, Position)
AzureIoTClient 16:b2c6de619743 40 );
AzureIoTClient 16:b2c6de619743 41
AzureIoTClient 16:b2c6de619743 42 END_NAMESPACE(WeatherStation);
AzureIoTClient 16:b2c6de619743 43
AzureIoTClient 64:a1b8a60c0a5b 44 static char propText[1024];
AzureIoTClient 16:b2c6de619743 45
AzureIoTClient 16:b2c6de619743 46 EXECUTE_COMMAND_RESULT TurnFanOn(ContosoAnemometer* device)
AzureIoTClient 16:b2c6de619743 47 {
AzureIoTClient 16:b2c6de619743 48 (void)device;
AzureIoTClient 16:b2c6de619743 49 (void)printf("Turning fan on.\r\n");
AzureIoTClient 16:b2c6de619743 50 return EXECUTE_COMMAND_SUCCESS;
AzureIoTClient 16:b2c6de619743 51 }
AzureIoTClient 16:b2c6de619743 52
AzureIoTClient 16:b2c6de619743 53 EXECUTE_COMMAND_RESULT TurnFanOff(ContosoAnemometer* device)
AzureIoTClient 16:b2c6de619743 54 {
AzureIoTClient 16:b2c6de619743 55 (void)device;
AzureIoTClient 16:b2c6de619743 56 (void)printf("Turning fan off.\r\n");
AzureIoTClient 16:b2c6de619743 57 return EXECUTE_COMMAND_SUCCESS;
AzureIoTClient 16:b2c6de619743 58 }
AzureIoTClient 16:b2c6de619743 59
AzureIoTClient 16:b2c6de619743 60 EXECUTE_COMMAND_RESULT SetAirResistance(ContosoAnemometer* device, int Position)
AzureIoTClient 16:b2c6de619743 61 {
AzureIoTClient 16:b2c6de619743 62 (void)device;
AzureIoTClient 16:b2c6de619743 63 (void)printf("Setting Air Resistance Position to %d.\r\n", Position);
AzureIoTClient 16:b2c6de619743 64 return EXECUTE_COMMAND_SUCCESS;
AzureIoTClient 16:b2c6de619743 65 }
AzureIoTClient 16:b2c6de619743 66
AzureIoTClient 16:b2c6de619743 67 void sendCallback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback)
AzureIoTClient 16:b2c6de619743 68 {
AzureIoTClient 43:f179aa2ce96f 69 unsigned int messageTrackingId = (unsigned int)(uintptr_t)userContextCallback;
AzureIoTClient 16:b2c6de619743 70
AzureIoTClient 43:f179aa2ce96f 71 (void)printf("Message Id: %u Received.\r\n", messageTrackingId);
AzureIoTClient 16:b2c6de619743 72
AzureIoTClient 16:b2c6de619743 73 (void)printf("Result Call Back Called! Result is: %s \r\n", ENUM_TO_STRING(IOTHUB_CLIENT_CONFIRMATION_RESULT, result));
AzureIoTClient 16:b2c6de619743 74 }
AzureIoTClient 16:b2c6de619743 75
AzureIoTClient 16:b2c6de619743 76
AzureIoTClient 64:a1b8a60c0a5b 77 static void sendMessage(IOTHUB_CLIENT_HANDLE iotHubClientHandle, const unsigned char* buffer, size_t size, ContosoAnemometer *myWeather)
AzureIoTClient 16:b2c6de619743 78 {
AzureIoTClient 16:b2c6de619743 79 static unsigned int messageTrackingId;
AzureIoTClient 16:b2c6de619743 80 IOTHUB_MESSAGE_HANDLE messageHandle = IoTHubMessage_CreateFromByteArray(buffer, size);
AzureIoTClient 16:b2c6de619743 81 if (messageHandle == NULL)
AzureIoTClient 16:b2c6de619743 82 {
AzureIoTClient 16:b2c6de619743 83 printf("unable to create a new IoTHubMessage\r\n");
AzureIoTClient 16:b2c6de619743 84 }
AzureIoTClient 16:b2c6de619743 85 else
AzureIoTClient 16:b2c6de619743 86 {
AzureIoTClient 64:a1b8a60c0a5b 87 MAP_HANDLE propMap = IoTHubMessage_Properties(messageHandle);
AzureIoTClient 64:a1b8a60c0a5b 88 (void)sprintf_s(propText, sizeof(propText), myWeather->Temperature > 28 ? "true" : "false");
AzureIoTClient 64:a1b8a60c0a5b 89 if (Map_AddOrUpdate(propMap, "temperatureAlert", propText) != MAP_OK)
AzureIoTClient 64:a1b8a60c0a5b 90 {
AzureIoTClient 64:a1b8a60c0a5b 91 (void)printf("ERROR: Map_AddOrUpdate Failed!\r\n");
AzureIoTClient 64:a1b8a60c0a5b 92 }
AzureIoTClient 64:a1b8a60c0a5b 93
AzureIoTClient 16:b2c6de619743 94 if (IoTHubClient_SendEventAsync(iotHubClientHandle, messageHandle, sendCallback, (void*)(uintptr_t)messageTrackingId) != IOTHUB_CLIENT_OK)
AzureIoTClient 16:b2c6de619743 95 {
AzureIoTClient 16:b2c6de619743 96 printf("failed to hand over the message to IoTHubClient");
AzureIoTClient 16:b2c6de619743 97 }
AzureIoTClient 16:b2c6de619743 98 else
AzureIoTClient 16:b2c6de619743 99 {
AzureIoTClient 16:b2c6de619743 100 printf("IoTHubClient accepted the message for delivery\r\n");
AzureIoTClient 16:b2c6de619743 101 }
AzureIoTClient 16:b2c6de619743 102
AzureIoTClient 16:b2c6de619743 103 IoTHubMessage_Destroy(messageHandle);
AzureIoTClient 16:b2c6de619743 104 }
AzureIoTClient 16:b2c6de619743 105 free((void*)buffer);
AzureIoTClient 16:b2c6de619743 106 messageTrackingId++;
AzureIoTClient 16:b2c6de619743 107 }
AzureIoTClient 16:b2c6de619743 108
AzureIoTClient 16:b2c6de619743 109 static IOTHUBMESSAGE_DISPOSITION_RESULT IoTHubMessage(IOTHUB_MESSAGE_HANDLE message, void* userContextCallback)
AzureIoTClient 16:b2c6de619743 110 {
AzureIoTClient 16:b2c6de619743 111 IOTHUBMESSAGE_DISPOSITION_RESULT result;
AzureIoTClient 16:b2c6de619743 112 const unsigned char* buffer;
AzureIoTClient 16:b2c6de619743 113 size_t size;
AzureIoTClient 16:b2c6de619743 114 if (IoTHubMessage_GetByteArray(message, &buffer, &size) != IOTHUB_MESSAGE_OK)
AzureIoTClient 16:b2c6de619743 115 {
AzureIoTClient 16:b2c6de619743 116 printf("unable to IoTHubMessage_GetByteArray\r\n");
AzureIoTClient 56:68f0d4c20dea 117 result = IOTHUBMESSAGE_ABANDONED;
AzureIoTClient 16:b2c6de619743 118 }
AzureIoTClient 16:b2c6de619743 119 else
AzureIoTClient 16:b2c6de619743 120 {
AzureIoTClient 16:b2c6de619743 121 /*buffer is not zero terminated*/
AzureIoTClient 16:b2c6de619743 122 char* temp = malloc(size + 1);
AzureIoTClient 16:b2c6de619743 123 if (temp == NULL)
AzureIoTClient 16:b2c6de619743 124 {
AzureIoTClient 16:b2c6de619743 125 printf("failed to malloc\r\n");
AzureIoTClient 56:68f0d4c20dea 126 result = IOTHUBMESSAGE_ABANDONED;
AzureIoTClient 16:b2c6de619743 127 }
AzureIoTClient 16:b2c6de619743 128 else
AzureIoTClient 16:b2c6de619743 129 {
AzureIoTClient 56:68f0d4c20dea 130 (void)memcpy(temp, buffer, size);
AzureIoTClient 16:b2c6de619743 131 temp[size] = '\0';
AzureIoTClient 16:b2c6de619743 132 EXECUTE_COMMAND_RESULT executeCommandResult = EXECUTE_COMMAND(userContextCallback, temp);
AzureIoTClient 16:b2c6de619743 133 result =
AzureIoTClient 16:b2c6de619743 134 (executeCommandResult == EXECUTE_COMMAND_ERROR) ? IOTHUBMESSAGE_ABANDONED :
AzureIoTClient 16:b2c6de619743 135 (executeCommandResult == EXECUTE_COMMAND_SUCCESS) ? IOTHUBMESSAGE_ACCEPTED :
AzureIoTClient 16:b2c6de619743 136 IOTHUBMESSAGE_REJECTED;
AzureIoTClient 16:b2c6de619743 137 free(temp);
AzureIoTClient 16:b2c6de619743 138 }
AzureIoTClient 16:b2c6de619743 139 }
AzureIoTClient 16:b2c6de619743 140 return result;
AzureIoTClient 16:b2c6de619743 141 }
AzureIoTClient 16:b2c6de619743 142
AzureIoTClient 16:b2c6de619743 143 void simplesample_amqp_run(void)
AzureIoTClient 16:b2c6de619743 144 {
Azure.IoT Build 29:12a5fd69f49e 145 if (platform_init() != 0)
AzureIoTClient 16:b2c6de619743 146 {
Azure.IoT Build 29:12a5fd69f49e 147 printf("Failed to initialize the platform.\r\n");
AzureIoTClient 16:b2c6de619743 148 }
AzureIoTClient 16:b2c6de619743 149 else
AzureIoTClient 16:b2c6de619743 150 {
Azure.IoT Build 29:12a5fd69f49e 151 if (serializer_init(NULL) != SERIALIZER_OK)
AzureIoTClient 16:b2c6de619743 152 {
Azure.IoT Build 29:12a5fd69f49e 153 (void)printf("Failed on serializer_init\r\n");
AzureIoTClient 16:b2c6de619743 154 }
AzureIoTClient 16:b2c6de619743 155 else
AzureIoTClient 16:b2c6de619743 156 {
Azure.IoT Build 29:12a5fd69f49e 157 /* Setup IoTHub client configuration */
Azure.IoT Build 29:12a5fd69f49e 158 IOTHUB_CLIENT_HANDLE iotHubClientHandle = IoTHubClient_CreateFromConnectionString(connectionString, AMQP_Protocol);
Azure.IoT Build 29:12a5fd69f49e 159 srand((unsigned int)time(NULL));
Azure.IoT Build 29:12a5fd69f49e 160 int avgWindSpeed = 10;
AzureIoTClient 64:a1b8a60c0a5b 161 float minTemperature = 20.0;
AzureIoTClient 64:a1b8a60c0a5b 162 float minHumidity = 60.0;
Azure.IoT Build 29:12a5fd69f49e 163
AzureIoTClient 43:f179aa2ce96f 164 // Turn on Log
AzureIoTClient 43:f179aa2ce96f 165 bool trace = true;
AzureIoTClient 43:f179aa2ce96f 166 (void)IoTHubClient_SetOption(iotHubClientHandle, "logtrace", &trace);
AzureIoTClient 43:f179aa2ce96f 167
Azure.IoT Build 29:12a5fd69f49e 168 if (iotHubClientHandle == NULL)
Azure.IoT Build 26:9662f727e974 169 {
Azure.IoT Build 29:12a5fd69f49e 170 (void)printf("Failed on IoTHubClient_Create\r\n");
AzureIoTClient 16:b2c6de619743 171 }
AzureIoTClient 16:b2c6de619743 172 else
AzureIoTClient 16:b2c6de619743 173 {
Azure.IoT Build 29:12a5fd69f49e 174 #ifdef MBED_BUILD_TIMESTAMP
Azure.IoT Build 29:12a5fd69f49e 175 // For mbed add the certificate information
Azure.IoT Build 29:12a5fd69f49e 176 if (IoTHubClient_SetOption(iotHubClientHandle, "TrustedCerts", certificates) != IOTHUB_CLIENT_OK)
Azure.IoT Build 29:12a5fd69f49e 177 {
Azure.IoT Build 29:12a5fd69f49e 178 (void)printf("failure to set option \"TrustedCerts\"\r\n");
Azure.IoT Build 29:12a5fd69f49e 179 }
Azure.IoT Build 29:12a5fd69f49e 180 #endif // MBED_BUILD_TIMESTAMP
Azure.IoT Build 26:9662f727e974 181
Azure.IoT Build 29:12a5fd69f49e 182 ContosoAnemometer* myWeather = CREATE_MODEL_INSTANCE(WeatherStation, ContosoAnemometer);
Azure.IoT Build 29:12a5fd69f49e 183 if (myWeather == NULL)
Azure.IoT Build 25:9cb9b0c15218 184 {
Azure.IoT Build 29:12a5fd69f49e 185 (void)printf("Failed on CREATE_MODEL_INSTANCE\r\n");
AzureIoTClient 16:b2c6de619743 186 }
AzureIoTClient 16:b2c6de619743 187 else
AzureIoTClient 16:b2c6de619743 188 {
Azure.IoT Build 29:12a5fd69f49e 189 unsigned char* destination;
Azure.IoT Build 29:12a5fd69f49e 190 size_t destinationSize;
AzureIoTClient 16:b2c6de619743 191
Azure.IoT Build 29:12a5fd69f49e 192 if (IoTHubClient_SetMessageCallback(iotHubClientHandle, IoTHubMessage, myWeather) != IOTHUB_CLIENT_OK)
AzureIoTClient 16:b2c6de619743 193 {
Azure.IoT Build 29:12a5fd69f49e 194 printf("unable to IoTHubClient_SetMessageCallback\r\n");
AzureIoTClient 16:b2c6de619743 195 }
AzureIoTClient 16:b2c6de619743 196 else
AzureIoTClient 16:b2c6de619743 197 {
Azure.IoT Build 29:12a5fd69f49e 198 myWeather->DeviceId = "myFirstDevice";
Azure.IoT Build 29:12a5fd69f49e 199 myWeather->WindSpeed = avgWindSpeed + (rand() % 4 + 2);
AzureIoTClient 64:a1b8a60c0a5b 200 myWeather->Temperature = minTemperature + (rand() % 10);
AzureIoTClient 64:a1b8a60c0a5b 201 myWeather->Humidity = minHumidity + (rand() % 20);
AzureIoTClient 16:b2c6de619743 202
AzureIoTClient 64:a1b8a60c0a5b 203 if (SERIALIZE(&destination, &destinationSize, myWeather->DeviceId, myWeather->WindSpeed, myWeather->Temperature, myWeather->Humidity) != CODEFIRST_OK)
Azure.IoT Build 29:12a5fd69f49e 204 {
Azure.IoT Build 29:12a5fd69f49e 205 (void)printf("Failed to serialize\r\n");
Azure.IoT Build 29:12a5fd69f49e 206 }
Azure.IoT Build 29:12a5fd69f49e 207 else
Azure.IoT Build 29:12a5fd69f49e 208 {
AzureIoTClient 64:a1b8a60c0a5b 209 sendMessage(iotHubClientHandle, destination, destinationSize, myWeather);
Azure.IoT Build 29:12a5fd69f49e 210 }
Azure.IoT Build 29:12a5fd69f49e 211
Azure.IoT Build 29:12a5fd69f49e 212 /* wait for commands */
Azure.IoT Build 29:12a5fd69f49e 213 (void)getchar();
Azure.IoT Build 29:12a5fd69f49e 214 }
Azure.IoT Build 29:12a5fd69f49e 215 DESTROY_MODEL_INSTANCE(myWeather);
AzureIoTClient 16:b2c6de619743 216 }
Azure.IoT Build 29:12a5fd69f49e 217 IoTHubClient_Destroy(iotHubClientHandle);
AzureIoTClient 16:b2c6de619743 218 }
Azure.IoT Build 29:12a5fd69f49e 219 serializer_deinit();
AzureIoTClient 16:b2c6de619743 220 }
Azure.IoT Build 29:12a5fd69f49e 221 platform_deinit();
AzureIoTClient 16:b2c6de619743 222 }
AzureIoTClient 16:b2c6de619743 223 }
AzureIoTClient 16:b2c6de619743 224