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@74:b684f612f838, 2017-09-11 (annotated)

Committer:
AzureIoTClient
Date:
Mon Sep 11 09:25:52 2017 -0700
Revision:
74:b684f612f838
Parent:
64:a1b8a60c0a5b
Child:
79:eb8a0114edde
1.1.23

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 74:b684f612f838 22 #define SET_TRUSTED_CERT_IN_SAMPLES
AzureIoTClient 74:b684f612f838 23 #endif // MBED_BUILD_TIMESTAMP
AzureIoTClient 74:b684f612f838 24
AzureIoTClient 74:b684f612f838 25 #ifdef SET_TRUSTED_CERT_IN_SAMPLES
AzureIoTClient 16:b2c6de619743 26 #include "certs.h"
AzureIoTClient 74:b684f612f838 27 #endif // SET_TRUSTED_CERT_IN_SAMPLES
AzureIoTClient 16:b2c6de619743 28
AzureIoTClient 18:a3ec1aab72dc 29 /*String containing Hostname, Device Id & Device Key in the format: */
AzureIoTClient 18:a3ec1aab72dc 30 /* "HostName=<host_name>;DeviceId=<device_id>;SharedAccessKey=<device_key>" */
AzureIoTClient 16:b2c6de619743 31 static const char* connectionString = "[device connection string]";
AzureIoTClient 16:b2c6de619743 32
AzureIoTClient 16:b2c6de619743 33 // Define the Model
AzureIoTClient 16:b2c6de619743 34 BEGIN_NAMESPACE(WeatherStation);
AzureIoTClient 16:b2c6de619743 35
AzureIoTClient 16:b2c6de619743 36 DECLARE_MODEL(ContosoAnemometer,
AzureIoTClient 16:b2c6de619743 37 WITH_DATA(ascii_char_ptr, DeviceId),
AzureIoTClient 19:eae21b79ceff 38 WITH_DATA(int, WindSpeed),
AzureIoTClient 64:a1b8a60c0a5b 39 WITH_DATA(float, Temperature),
AzureIoTClient 64:a1b8a60c0a5b 40 WITH_DATA(float, Humidity),
AzureIoTClient 16:b2c6de619743 41 WITH_ACTION(TurnFanOn),
AzureIoTClient 16:b2c6de619743 42 WITH_ACTION(TurnFanOff),
AzureIoTClient 16:b2c6de619743 43 WITH_ACTION(SetAirResistance, int, Position)
AzureIoTClient 16:b2c6de619743 44 );
AzureIoTClient 16:b2c6de619743 45
AzureIoTClient 16:b2c6de619743 46 END_NAMESPACE(WeatherStation);
AzureIoTClient 16:b2c6de619743 47
AzureIoTClient 64:a1b8a60c0a5b 48 static char propText[1024];
AzureIoTClient 16:b2c6de619743 49
AzureIoTClient 16:b2c6de619743 50 EXECUTE_COMMAND_RESULT TurnFanOn(ContosoAnemometer* device)
AzureIoTClient 16:b2c6de619743 51 {
AzureIoTClient 16:b2c6de619743 52 (void)device;
AzureIoTClient 16:b2c6de619743 53 (void)printf("Turning fan on.\r\n");
AzureIoTClient 16:b2c6de619743 54 return EXECUTE_COMMAND_SUCCESS;
AzureIoTClient 16:b2c6de619743 55 }
AzureIoTClient 16:b2c6de619743 56
AzureIoTClient 16:b2c6de619743 57 EXECUTE_COMMAND_RESULT TurnFanOff(ContosoAnemometer* device)
AzureIoTClient 16:b2c6de619743 58 {
AzureIoTClient 16:b2c6de619743 59 (void)device;
AzureIoTClient 16:b2c6de619743 60 (void)printf("Turning fan off.\r\n");
AzureIoTClient 16:b2c6de619743 61 return EXECUTE_COMMAND_SUCCESS;
AzureIoTClient 16:b2c6de619743 62 }
AzureIoTClient 16:b2c6de619743 63
AzureIoTClient 16:b2c6de619743 64 EXECUTE_COMMAND_RESULT SetAirResistance(ContosoAnemometer* device, int Position)
AzureIoTClient 16:b2c6de619743 65 {
AzureIoTClient 16:b2c6de619743 66 (void)device;
AzureIoTClient 16:b2c6de619743 67 (void)printf("Setting Air Resistance Position to %d.\r\n", Position);
AzureIoTClient 16:b2c6de619743 68 return EXECUTE_COMMAND_SUCCESS;
AzureIoTClient 16:b2c6de619743 69 }
AzureIoTClient 16:b2c6de619743 70
AzureIoTClient 16:b2c6de619743 71 void sendCallback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback)
AzureIoTClient 16:b2c6de619743 72 {
AzureIoTClient 43:f179aa2ce96f 73 unsigned int messageTrackingId = (unsigned int)(uintptr_t)userContextCallback;
AzureIoTClient 16:b2c6de619743 74
AzureIoTClient 43:f179aa2ce96f 75 (void)printf("Message Id: %u Received.\r\n", messageTrackingId);
AzureIoTClient 16:b2c6de619743 76
AzureIoTClient 16:b2c6de619743 77 (void)printf("Result Call Back Called! Result is: %s \r\n", ENUM_TO_STRING(IOTHUB_CLIENT_CONFIRMATION_RESULT, result));
AzureIoTClient 16:b2c6de619743 78 }
AzureIoTClient 16:b2c6de619743 79
AzureIoTClient 16:b2c6de619743 80
AzureIoTClient 64:a1b8a60c0a5b 81 static void sendMessage(IOTHUB_CLIENT_HANDLE iotHubClientHandle, const unsigned char* buffer, size_t size, ContosoAnemometer *myWeather)
AzureIoTClient 16:b2c6de619743 82 {
AzureIoTClient 16:b2c6de619743 83 static unsigned int messageTrackingId;
AzureIoTClient 16:b2c6de619743 84 IOTHUB_MESSAGE_HANDLE messageHandle = IoTHubMessage_CreateFromByteArray(buffer, size);
AzureIoTClient 16:b2c6de619743 85 if (messageHandle == NULL)
AzureIoTClient 16:b2c6de619743 86 {
AzureIoTClient 16:b2c6de619743 87 printf("unable to create a new IoTHubMessage\r\n");
AzureIoTClient 16:b2c6de619743 88 }
AzureIoTClient 16:b2c6de619743 89 else
AzureIoTClient 16:b2c6de619743 90 {
AzureIoTClient 64:a1b8a60c0a5b 91 MAP_HANDLE propMap = IoTHubMessage_Properties(messageHandle);
AzureIoTClient 64:a1b8a60c0a5b 92 (void)sprintf_s(propText, sizeof(propText), myWeather->Temperature > 28 ? "true" : "false");
AzureIoTClient 64:a1b8a60c0a5b 93 if (Map_AddOrUpdate(propMap, "temperatureAlert", propText) != MAP_OK)
AzureIoTClient 64:a1b8a60c0a5b 94 {
AzureIoTClient 64:a1b8a60c0a5b 95 (void)printf("ERROR: Map_AddOrUpdate Failed!\r\n");
AzureIoTClient 64:a1b8a60c0a5b 96 }
AzureIoTClient 64:a1b8a60c0a5b 97
AzureIoTClient 16:b2c6de619743 98 if (IoTHubClient_SendEventAsync(iotHubClientHandle, messageHandle, sendCallback, (void*)(uintptr_t)messageTrackingId) != IOTHUB_CLIENT_OK)
AzureIoTClient 16:b2c6de619743 99 {
AzureIoTClient 16:b2c6de619743 100 printf("failed to hand over the message to IoTHubClient");
AzureIoTClient 16:b2c6de619743 101 }
AzureIoTClient 16:b2c6de619743 102 else
AzureIoTClient 16:b2c6de619743 103 {
AzureIoTClient 16:b2c6de619743 104 printf("IoTHubClient accepted the message for delivery\r\n");
AzureIoTClient 16:b2c6de619743 105 }
AzureIoTClient 16:b2c6de619743 106
AzureIoTClient 16:b2c6de619743 107 IoTHubMessage_Destroy(messageHandle);
AzureIoTClient 16:b2c6de619743 108 }
AzureIoTClient 16:b2c6de619743 109 free((void*)buffer);
AzureIoTClient 16:b2c6de619743 110 messageTrackingId++;
AzureIoTClient 16:b2c6de619743 111 }
AzureIoTClient 16:b2c6de619743 112
AzureIoTClient 16:b2c6de619743 113 static IOTHUBMESSAGE_DISPOSITION_RESULT IoTHubMessage(IOTHUB_MESSAGE_HANDLE message, void* userContextCallback)
AzureIoTClient 16:b2c6de619743 114 {
AzureIoTClient 16:b2c6de619743 115 IOTHUBMESSAGE_DISPOSITION_RESULT result;
AzureIoTClient 16:b2c6de619743 116 const unsigned char* buffer;
AzureIoTClient 16:b2c6de619743 117 size_t size;
AzureIoTClient 16:b2c6de619743 118 if (IoTHubMessage_GetByteArray(message, &buffer, &size) != IOTHUB_MESSAGE_OK)
AzureIoTClient 16:b2c6de619743 119 {
AzureIoTClient 16:b2c6de619743 120 printf("unable to IoTHubMessage_GetByteArray\r\n");
AzureIoTClient 56:68f0d4c20dea 121 result = IOTHUBMESSAGE_ABANDONED;
AzureIoTClient 16:b2c6de619743 122 }
AzureIoTClient 16:b2c6de619743 123 else
AzureIoTClient 16:b2c6de619743 124 {
AzureIoTClient 16:b2c6de619743 125 /*buffer is not zero terminated*/
AzureIoTClient 16:b2c6de619743 126 char* temp = malloc(size + 1);
AzureIoTClient 16:b2c6de619743 127 if (temp == NULL)
AzureIoTClient 16:b2c6de619743 128 {
AzureIoTClient 16:b2c6de619743 129 printf("failed to malloc\r\n");
AzureIoTClient 56:68f0d4c20dea 130 result = IOTHUBMESSAGE_ABANDONED;
AzureIoTClient 16:b2c6de619743 131 }
AzureIoTClient 16:b2c6de619743 132 else
AzureIoTClient 16:b2c6de619743 133 {
AzureIoTClient 56:68f0d4c20dea 134 (void)memcpy(temp, buffer, size);
AzureIoTClient 16:b2c6de619743 135 temp[size] = '\0';
AzureIoTClient 16:b2c6de619743 136 EXECUTE_COMMAND_RESULT executeCommandResult = EXECUTE_COMMAND(userContextCallback, temp);
AzureIoTClient 16:b2c6de619743 137 result =
AzureIoTClient 16:b2c6de619743 138 (executeCommandResult == EXECUTE_COMMAND_ERROR) ? IOTHUBMESSAGE_ABANDONED :
AzureIoTClient 16:b2c6de619743 139 (executeCommandResult == EXECUTE_COMMAND_SUCCESS) ? IOTHUBMESSAGE_ACCEPTED :
AzureIoTClient 16:b2c6de619743 140 IOTHUBMESSAGE_REJECTED;
AzureIoTClient 16:b2c6de619743 141 free(temp);
AzureIoTClient 16:b2c6de619743 142 }
AzureIoTClient 16:b2c6de619743 143 }
AzureIoTClient 16:b2c6de619743 144 return result;
AzureIoTClient 16:b2c6de619743 145 }
AzureIoTClient 16:b2c6de619743 146
AzureIoTClient 16:b2c6de619743 147 void simplesample_amqp_run(void)
AzureIoTClient 16:b2c6de619743 148 {
Azure.IoT Build 29:12a5fd69f49e 149 if (platform_init() != 0)
AzureIoTClient 16:b2c6de619743 150 {
Azure.IoT Build 29:12a5fd69f49e 151 printf("Failed to initialize the platform.\r\n");
AzureIoTClient 16:b2c6de619743 152 }
AzureIoTClient 16:b2c6de619743 153 else
AzureIoTClient 16:b2c6de619743 154 {
Azure.IoT Build 29:12a5fd69f49e 155 if (serializer_init(NULL) != SERIALIZER_OK)
AzureIoTClient 16:b2c6de619743 156 {
Azure.IoT Build 29:12a5fd69f49e 157 (void)printf("Failed on serializer_init\r\n");
AzureIoTClient 16:b2c6de619743 158 }
AzureIoTClient 16:b2c6de619743 159 else
AzureIoTClient 16:b2c6de619743 160 {
Azure.IoT Build 29:12a5fd69f49e 161 /* Setup IoTHub client configuration */
Azure.IoT Build 29:12a5fd69f49e 162 IOTHUB_CLIENT_HANDLE iotHubClientHandle = IoTHubClient_CreateFromConnectionString(connectionString, AMQP_Protocol);
Azure.IoT Build 29:12a5fd69f49e 163 srand((unsigned int)time(NULL));
Azure.IoT Build 29:12a5fd69f49e 164 int avgWindSpeed = 10;
AzureIoTClient 64:a1b8a60c0a5b 165 float minTemperature = 20.0;
AzureIoTClient 64:a1b8a60c0a5b 166 float minHumidity = 60.0;
Azure.IoT Build 29:12a5fd69f49e 167
AzureIoTClient 43:f179aa2ce96f 168 // Turn on Log
AzureIoTClient 43:f179aa2ce96f 169 bool trace = true;
AzureIoTClient 43:f179aa2ce96f 170 (void)IoTHubClient_SetOption(iotHubClientHandle, "logtrace", &trace);
AzureIoTClient 43:f179aa2ce96f 171
Azure.IoT Build 29:12a5fd69f49e 172 if (iotHubClientHandle == NULL)
Azure.IoT Build 26:9662f727e974 173 {
Azure.IoT Build 29:12a5fd69f49e 174 (void)printf("Failed on IoTHubClient_Create\r\n");
AzureIoTClient 16:b2c6de619743 175 }
AzureIoTClient 16:b2c6de619743 176 else
AzureIoTClient 16:b2c6de619743 177 {
AzureIoTClient 74:b684f612f838 178 #ifdef SET_TRUSTED_CERT_IN_SAMPLES
Azure.IoT Build 29:12a5fd69f49e 179 // For mbed add the certificate information
Azure.IoT Build 29:12a5fd69f49e 180 if (IoTHubClient_SetOption(iotHubClientHandle, "TrustedCerts", certificates) != IOTHUB_CLIENT_OK)
Azure.IoT Build 29:12a5fd69f49e 181 {
Azure.IoT Build 29:12a5fd69f49e 182 (void)printf("failure to set option \"TrustedCerts\"\r\n");
Azure.IoT Build 29:12a5fd69f49e 183 }
AzureIoTClient 74:b684f612f838 184 #endif // SET_TRUSTED_CERT_IN_SAMPLES
Azure.IoT Build 26:9662f727e974 185
Azure.IoT Build 29:12a5fd69f49e 186 ContosoAnemometer* myWeather = CREATE_MODEL_INSTANCE(WeatherStation, ContosoAnemometer);
Azure.IoT Build 29:12a5fd69f49e 187 if (myWeather == NULL)
Azure.IoT Build 25:9cb9b0c15218 188 {
Azure.IoT Build 29:12a5fd69f49e 189 (void)printf("Failed on CREATE_MODEL_INSTANCE\r\n");
AzureIoTClient 16:b2c6de619743 190 }
AzureIoTClient 16:b2c6de619743 191 else
AzureIoTClient 16:b2c6de619743 192 {
Azure.IoT Build 29:12a5fd69f49e 193 unsigned char* destination;
Azure.IoT Build 29:12a5fd69f49e 194 size_t destinationSize;
AzureIoTClient 16:b2c6de619743 195
Azure.IoT Build 29:12a5fd69f49e 196 if (IoTHubClient_SetMessageCallback(iotHubClientHandle, IoTHubMessage, myWeather) != IOTHUB_CLIENT_OK)
AzureIoTClient 16:b2c6de619743 197 {
Azure.IoT Build 29:12a5fd69f49e 198 printf("unable to IoTHubClient_SetMessageCallback\r\n");
AzureIoTClient 16:b2c6de619743 199 }
AzureIoTClient 16:b2c6de619743 200 else
AzureIoTClient 16:b2c6de619743 201 {
Azure.IoT Build 29:12a5fd69f49e 202 myWeather->DeviceId = "myFirstDevice";
Azure.IoT Build 29:12a5fd69f49e 203 myWeather->WindSpeed = avgWindSpeed + (rand() % 4 + 2);
AzureIoTClient 64:a1b8a60c0a5b 204 myWeather->Temperature = minTemperature + (rand() % 10);
AzureIoTClient 64:a1b8a60c0a5b 205 myWeather->Humidity = minHumidity + (rand() % 20);
AzureIoTClient 16:b2c6de619743 206
AzureIoTClient 64:a1b8a60c0a5b 207 if (SERIALIZE(&destination, &destinationSize, myWeather->DeviceId, myWeather->WindSpeed, myWeather->Temperature, myWeather->Humidity) != CODEFIRST_OK)
Azure.IoT Build 29:12a5fd69f49e 208 {
Azure.IoT Build 29:12a5fd69f49e 209 (void)printf("Failed to serialize\r\n");
Azure.IoT Build 29:12a5fd69f49e 210 }
Azure.IoT Build 29:12a5fd69f49e 211 else
Azure.IoT Build 29:12a5fd69f49e 212 {
AzureIoTClient 64:a1b8a60c0a5b 213 sendMessage(iotHubClientHandle, destination, destinationSize, myWeather);
Azure.IoT Build 29:12a5fd69f49e 214 }
Azure.IoT Build 29:12a5fd69f49e 215
Azure.IoT Build 29:12a5fd69f49e 216 /* wait for commands */
Azure.IoT Build 29:12a5fd69f49e 217 (void)getchar();
Azure.IoT Build 29:12a5fd69f49e 218 }
Azure.IoT Build 29:12a5fd69f49e 219 DESTROY_MODEL_INSTANCE(myWeather);
AzureIoTClient 16:b2c6de619743 220 }
Azure.IoT Build 29:12a5fd69f49e 221 IoTHubClient_Destroy(iotHubClientHandle);
AzureIoTClient 16:b2c6de619743 222 }
Azure.IoT Build 29:12a5fd69f49e 223 serializer_deinit();
AzureIoTClient 16:b2c6de619743 224 }
Azure.IoT Build 29:12a5fd69f49e 225 platform_deinit();
AzureIoTClient 16:b2c6de619743 226 }
AzureIoTClient 16:b2c6de619743 227 }
AzureIoTClient 16:b2c6de619743 228