Azure IoT / Mbed 2 deprecated simplesample_mqtt

A simple IoTHub sample using MQTT as transport

Dependencies:   EthernetInterface NTPClient mbed-rtos mbed wolfSSL azure_c_shared_utility iothub_client azure_umqtt_c iothub_mqtt_transport serializer

simplesample_mqtt.c@38:6661a95af557, 2017-05-08 (annotated)

Committer:
AzureIoTClient
Date:
Mon May 08 10:53:41 2017 -0700
Revision:
38:6661a95af557
Parent:
34:4eea18741566
Child:
47:5a11f794a6ae
1.1.14

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Azure.IoT Build 2:eef448cf9eb7 1 // Copyright (c) Microsoft. All rights reserved.
Azure.IoT Build 2:eef448cf9eb7 2 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
Azure.IoT Build 2:eef448cf9eb7 3
Azure.IoT Build 2:eef448cf9eb7 4 #include <stdlib.h>
Azure.IoT Build 2:eef448cf9eb7 5
Azure.IoT Build 2:eef448cf9eb7 6 #include <stdio.h>
Azure.IoT Build 2:eef448cf9eb7 7 #include <stdint.h>
Azure.IoT Build 2:eef448cf9eb7 8
Azure.IoT Build 2:eef448cf9eb7 9 /* This sample uses the _LL APIs of iothub_client for example purposes.
Azure.IoT Build 2:eef448cf9eb7 10 That does not mean that MQTT only works with the _LL APIs.
Azure.IoT Build 2:eef448cf9eb7 11 Simply changing the using the convenience layer (functions not having _LL)
Azure.IoT Build 2:eef448cf9eb7 12 and removing calls to _DoWork will yield the same results. */
Azure.IoT Build 2:eef448cf9eb7 13
Azure.IoT.Build 26:3126b9d4187b 14 #ifdef ARDUINO
Azure.IoT.Build 26:3126b9d4187b 15 #include "AzureIoTHub.h"
Azure.IoT.Build 26:3126b9d4187b 16 #else
Azure.IoT Build 16:15f02cc1f940 17 #include "azure_c_shared_utility/threadapi.h"
Azure.IoT Build 16:15f02cc1f940 18 #include "azure_c_shared_utility/platform.h"
Azure.IoT Build 2:eef448cf9eb7 19 #include "serializer.h"
Azure.IoT Build 2:eef448cf9eb7 20 #include "iothub_client_ll.h"
Azure.IoT Build 2:eef448cf9eb7 21 #include "iothubtransportmqtt.h"
Azure.IoT.Build 26:3126b9d4187b 22 #endif
Azure.IoT.Build 26:3126b9d4187b 23
AzureIoTClient 6:55659b146374 24 #ifdef MBED_BUILD_TIMESTAMP
AzureIoTClient 6:55659b146374 25 #include "certs.h"
AzureIoTClient 6:55659b146374 26 #endif // MBED_BUILD_TIMESTAMP
AzureIoTClient 6:55659b146374 27
Azure.IoT Build 2:eef448cf9eb7 28
Azure.IoT Build 2:eef448cf9eb7 29 /*String containing Hostname, Device Id & Device Key in the format: */
Azure.IoT Build 2:eef448cf9eb7 30 /* "HostName=<host_name>;DeviceId=<device_id>;SharedAccessKey=<device_key>" */
Azure.IoT Build 2:eef448cf9eb7 31 static const char* connectionString = "[device connection string]";
Azure.IoT Build 2:eef448cf9eb7 32
Azure.IoT Build 2:eef448cf9eb7 33 // Define the Model
Azure.IoT Build 2:eef448cf9eb7 34 BEGIN_NAMESPACE(WeatherStation);
Azure.IoT Build 2:eef448cf9eb7 35
Azure.IoT Build 2:eef448cf9eb7 36 DECLARE_MODEL(ContosoAnemometer,
Azure.IoT Build 2:eef448cf9eb7 37 WITH_DATA(ascii_char_ptr, DeviceId),
Azure.IoT Build 2:eef448cf9eb7 38 WITH_DATA(int, WindSpeed),
AzureIoTClient 38:6661a95af557 39 WITH_DATA(float, Temperature),
AzureIoTClient 38:6661a95af557 40 WITH_DATA(float, Humidity),
Azure.IoT Build 2:eef448cf9eb7 41 WITH_ACTION(TurnFanOn),
Azure.IoT Build 2:eef448cf9eb7 42 WITH_ACTION(TurnFanOff),
Azure.IoT Build 2:eef448cf9eb7 43 WITH_ACTION(SetAirResistance, int, Position)
Azure.IoT Build 2:eef448cf9eb7 44 );
Azure.IoT Build 2:eef448cf9eb7 45
Azure.IoT Build 2:eef448cf9eb7 46 END_NAMESPACE(WeatherStation);
Azure.IoT Build 2:eef448cf9eb7 47
AzureIoTClient 38:6661a95af557 48 static char propText[1024];
Azure.IoT Build 2:eef448cf9eb7 49
Azure.IoT Build 2:eef448cf9eb7 50 EXECUTE_COMMAND_RESULT TurnFanOn(ContosoAnemometer* device)
Azure.IoT Build 2:eef448cf9eb7 51 {
Azure.IoT Build 2:eef448cf9eb7 52 (void)device;
Azure.IoT Build 2:eef448cf9eb7 53 (void)printf("Turning fan on.\r\n");
Azure.IoT Build 2:eef448cf9eb7 54 return EXECUTE_COMMAND_SUCCESS;
Azure.IoT Build 2:eef448cf9eb7 55 }
Azure.IoT Build 2:eef448cf9eb7 56
Azure.IoT Build 2:eef448cf9eb7 57 EXECUTE_COMMAND_RESULT TurnFanOff(ContosoAnemometer* device)
Azure.IoT Build 2:eef448cf9eb7 58 {
Azure.IoT Build 2:eef448cf9eb7 59 (void)device;
Azure.IoT Build 2:eef448cf9eb7 60 (void)printf("Turning fan off.\r\n");
Azure.IoT Build 2:eef448cf9eb7 61 return EXECUTE_COMMAND_SUCCESS;
Azure.IoT Build 2:eef448cf9eb7 62 }
Azure.IoT Build 2:eef448cf9eb7 63
Azure.IoT Build 2:eef448cf9eb7 64 EXECUTE_COMMAND_RESULT SetAirResistance(ContosoAnemometer* device, int Position)
Azure.IoT Build 2:eef448cf9eb7 65 {
Azure.IoT Build 2:eef448cf9eb7 66 (void)device;
Azure.IoT Build 2:eef448cf9eb7 67 (void)printf("Setting Air Resistance Position to %d.\r\n", Position);
Azure.IoT Build 2:eef448cf9eb7 68 return EXECUTE_COMMAND_SUCCESS;
Azure.IoT Build 2:eef448cf9eb7 69 }
Azure.IoT Build 2:eef448cf9eb7 70
Azure.IoT Build 2:eef448cf9eb7 71 void sendCallback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback)
Azure.IoT Build 2:eef448cf9eb7 72 {
AzureIoTClient 17:a6f7340182f9 73 unsigned int messageTrackingId = (unsigned int)(uintptr_t)userContextCallback;
Azure.IoT Build 2:eef448cf9eb7 74
AzureIoTClient 17:a6f7340182f9 75 (void)printf("Message Id: %u Received.\r\n", messageTrackingId);
Azure.IoT Build 2:eef448cf9eb7 76
Azure.IoT Build 2:eef448cf9eb7 77 (void)printf("Result Call Back Called! Result is: %s \r\n", ENUM_TO_STRING(IOTHUB_CLIENT_CONFIRMATION_RESULT, result));
Azure.IoT Build 2:eef448cf9eb7 78 }
Azure.IoT Build 2:eef448cf9eb7 79
AzureIoTClient 38:6661a95af557 80 static void sendMessage(IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle, const unsigned char* buffer, size_t size, ContosoAnemometer *myWeather)
Azure.IoT Build 2:eef448cf9eb7 81 {
Azure.IoT Build 2:eef448cf9eb7 82 static unsigned int messageTrackingId;
Azure.IoT Build 2:eef448cf9eb7 83 IOTHUB_MESSAGE_HANDLE messageHandle = IoTHubMessage_CreateFromByteArray(buffer, size);
Azure.IoT Build 2:eef448cf9eb7 84 if (messageHandle == NULL)
Azure.IoT Build 2:eef448cf9eb7 85 {
Azure.IoT Build 2:eef448cf9eb7 86 printf("unable to create a new IoTHubMessage\r\n");
Azure.IoT Build 2:eef448cf9eb7 87 }
Azure.IoT Build 2:eef448cf9eb7 88 else
Azure.IoT Build 2:eef448cf9eb7 89 {
AzureIoTClient 38:6661a95af557 90 MAP_HANDLE propMap = IoTHubMessage_Properties(messageHandle);
AzureIoTClient 38:6661a95af557 91 (void)sprintf_s(propText, sizeof(propText), myWeather->Temperature > 28 ? "true" : "false");
AzureIoTClient 38:6661a95af557 92 if (Map_AddOrUpdate(propMap, "temperatureAlert", propText) != MAP_OK)
AzureIoTClient 38:6661a95af557 93 {
AzureIoTClient 38:6661a95af557 94 (void)printf("ERROR: Map_AddOrUpdate Failed!\r\n");
AzureIoTClient 38:6661a95af557 95 }
AzureIoTClient 38:6661a95af557 96
Azure.IoT Build 2:eef448cf9eb7 97 if (IoTHubClient_LL_SendEventAsync(iotHubClientHandle, messageHandle, sendCallback, (void*)(uintptr_t)messageTrackingId) != IOTHUB_CLIENT_OK)
Azure.IoT Build 2:eef448cf9eb7 98 {
Azure.IoT Build 2:eef448cf9eb7 99 printf("failed to hand over the message to IoTHubClient");
Azure.IoT Build 2:eef448cf9eb7 100 }
Azure.IoT Build 2:eef448cf9eb7 101 else
Azure.IoT Build 2:eef448cf9eb7 102 {
Azure.IoT Build 2:eef448cf9eb7 103 printf("IoTHubClient accepted the message for delivery\r\n");
Azure.IoT Build 2:eef448cf9eb7 104 }
Azure.IoT Build 2:eef448cf9eb7 105 IoTHubMessage_Destroy(messageHandle);
Azure.IoT Build 2:eef448cf9eb7 106 }
Azure.IoT Build 2:eef448cf9eb7 107 messageTrackingId++;
Azure.IoT Build 2:eef448cf9eb7 108 }
Azure.IoT Build 2:eef448cf9eb7 109
Azure.IoT Build 2:eef448cf9eb7 110 /*this function "links" IoTHub to the serialization library*/
Azure.IoT Build 2:eef448cf9eb7 111 static IOTHUBMESSAGE_DISPOSITION_RESULT IoTHubMessage(IOTHUB_MESSAGE_HANDLE message, void* userContextCallback)
Azure.IoT Build 2:eef448cf9eb7 112 {
Azure.IoT Build 2:eef448cf9eb7 113 IOTHUBMESSAGE_DISPOSITION_RESULT result;
Azure.IoT Build 2:eef448cf9eb7 114 const unsigned char* buffer;
Azure.IoT Build 2:eef448cf9eb7 115 size_t size;
Azure.IoT Build 2:eef448cf9eb7 116 if (IoTHubMessage_GetByteArray(message, &buffer, &size) != IOTHUB_MESSAGE_OK)
Azure.IoT Build 2:eef448cf9eb7 117 {
Azure.IoT Build 2:eef448cf9eb7 118 printf("unable to IoTHubMessage_GetByteArray\r\n");
AzureIoTClient 30:7bb030702a93 119 result = IOTHUBMESSAGE_ABANDONED;
Azure.IoT Build 2:eef448cf9eb7 120 }
Azure.IoT Build 2:eef448cf9eb7 121 else
Azure.IoT Build 2:eef448cf9eb7 122 {
Azure.IoT Build 2:eef448cf9eb7 123 /*buffer is not zero terminated*/
Azure.IoT Build 2:eef448cf9eb7 124 char* temp = malloc(size + 1);
Azure.IoT Build 2:eef448cf9eb7 125 if (temp == NULL)
Azure.IoT Build 2:eef448cf9eb7 126 {
Azure.IoT Build 2:eef448cf9eb7 127 printf("failed to malloc\r\n");
AzureIoTClient 30:7bb030702a93 128 result = IOTHUBMESSAGE_ABANDONED;
Azure.IoT Build 2:eef448cf9eb7 129 }
Azure.IoT Build 2:eef448cf9eb7 130 else
Azure.IoT Build 2:eef448cf9eb7 131 {
AzureIoTClient 30:7bb030702a93 132 (void)memcpy(temp, buffer, size);
Azure.IoT Build 2:eef448cf9eb7 133 temp[size] = '\0';
Azure.IoT Build 2:eef448cf9eb7 134 EXECUTE_COMMAND_RESULT executeCommandResult = EXECUTE_COMMAND(userContextCallback, temp);
Azure.IoT Build 2:eef448cf9eb7 135 result =
Azure.IoT Build 2:eef448cf9eb7 136 (executeCommandResult == EXECUTE_COMMAND_ERROR) ? IOTHUBMESSAGE_ABANDONED :
Azure.IoT Build 2:eef448cf9eb7 137 (executeCommandResult == EXECUTE_COMMAND_SUCCESS) ? IOTHUBMESSAGE_ACCEPTED :
Azure.IoT Build 2:eef448cf9eb7 138 IOTHUBMESSAGE_REJECTED;
Azure.IoT Build 2:eef448cf9eb7 139 free(temp);
Azure.IoT Build 2:eef448cf9eb7 140 }
Azure.IoT Build 2:eef448cf9eb7 141 }
Azure.IoT Build 2:eef448cf9eb7 142 return result;
Azure.IoT Build 2:eef448cf9eb7 143 }
Azure.IoT Build 2:eef448cf9eb7 144
Azure.IoT Build 2:eef448cf9eb7 145 void simplesample_mqtt_run(void)
Azure.IoT Build 2:eef448cf9eb7 146 {
Azure.IoT Build 2:eef448cf9eb7 147 if (platform_init() != 0)
Azure.IoT Build 2:eef448cf9eb7 148 {
Azure.IoT Build 2:eef448cf9eb7 149 (void)printf("Failed to initialize platform.\r\n");
Azure.IoT Build 2:eef448cf9eb7 150 }
Azure.IoT Build 2:eef448cf9eb7 151 else
Azure.IoT Build 2:eef448cf9eb7 152 {
Azure.IoT Build 2:eef448cf9eb7 153 if (serializer_init(NULL) != SERIALIZER_OK)
Azure.IoT Build 2:eef448cf9eb7 154 {
Azure.IoT Build 2:eef448cf9eb7 155 (void)printf("Failed on serializer_init\r\n");
Azure.IoT Build 2:eef448cf9eb7 156 }
Azure.IoT Build 2:eef448cf9eb7 157 else
Azure.IoT Build 2:eef448cf9eb7 158 {
Azure.IoT Build 2:eef448cf9eb7 159 IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle = IoTHubClient_LL_CreateFromConnectionString(connectionString, MQTT_Protocol);
Azure.IoT Build 2:eef448cf9eb7 160 srand((unsigned int)time(NULL));
Azure.IoT Build 2:eef448cf9eb7 161 int avgWindSpeed = 10;
AzureIoTClient 38:6661a95af557 162 float minTemperature = 20.0;
AzureIoTClient 38:6661a95af557 163 float minHumidity = 60.0;
Azure.IoT Build 2:eef448cf9eb7 164
Azure.IoT Build 2:eef448cf9eb7 165 if (iotHubClientHandle == NULL)
Azure.IoT Build 2:eef448cf9eb7 166 {
Azure.IoT Build 2:eef448cf9eb7 167 (void)printf("Failed on IoTHubClient_LL_Create\r\n");
Azure.IoT Build 2:eef448cf9eb7 168 }
Azure.IoT Build 2:eef448cf9eb7 169 else
Azure.IoT Build 2:eef448cf9eb7 170 {
AzureIoTClient 6:55659b146374 171 #ifdef MBED_BUILD_TIMESTAMP
AzureIoTClient 6:55659b146374 172 // For mbed add the certificate information
AzureIoTClient 6:55659b146374 173 if (IoTHubClient_LL_SetOption(iotHubClientHandle, "TrustedCerts", certificates) != IOTHUB_CLIENT_OK)
AzureIoTClient 6:55659b146374 174 {
AzureIoTClient 6:55659b146374 175 (void)printf("failure to set option \"TrustedCerts\"\r\n");
AzureIoTClient 6:55659b146374 176 }
AzureIoTClient 6:55659b146374 177 #endif // MBED_BUILD_TIMESTAMP
AzureIoTClient 6:55659b146374 178
Azure.IoT Build 2:eef448cf9eb7 179
Azure.IoT Build 2:eef448cf9eb7 180 ContosoAnemometer* myWeather = CREATE_MODEL_INSTANCE(WeatherStation, ContosoAnemometer);
Azure.IoT Build 2:eef448cf9eb7 181 if (myWeather == NULL)
Azure.IoT Build 2:eef448cf9eb7 182 {
Azure.IoT Build 2:eef448cf9eb7 183 (void)printf("Failed on CREATE_MODEL_INSTANCE\r\n");
Azure.IoT Build 2:eef448cf9eb7 184 }
Azure.IoT Build 2:eef448cf9eb7 185 else
Azure.IoT Build 2:eef448cf9eb7 186 {
Azure.IoT Build 2:eef448cf9eb7 187 if (IoTHubClient_LL_SetMessageCallback(iotHubClientHandle, IoTHubMessage, myWeather) != IOTHUB_CLIENT_OK)
Azure.IoT Build 2:eef448cf9eb7 188 {
Azure.IoT Build 2:eef448cf9eb7 189 printf("unable to IoTHubClient_SetMessageCallback\r\n");
Azure.IoT Build 2:eef448cf9eb7 190 }
Azure.IoT Build 2:eef448cf9eb7 191 else
Azure.IoT Build 2:eef448cf9eb7 192 {
Azure.IoT Build 2:eef448cf9eb7 193 myWeather->DeviceId = "myFirstDevice";
Azure.IoT Build 2:eef448cf9eb7 194 myWeather->WindSpeed = avgWindSpeed + (rand() % 4 + 2);
AzureIoTClient 38:6661a95af557 195 myWeather->Temperature = minTemperature + (rand() % 10);
AzureIoTClient 38:6661a95af557 196 myWeather->Humidity = minHumidity + (rand() % 20);
Azure.IoT Build 2:eef448cf9eb7 197 {
Azure.IoT Build 2:eef448cf9eb7 198 unsigned char* destination;
Azure.IoT Build 2:eef448cf9eb7 199 size_t destinationSize;
AzureIoTClient 38:6661a95af557 200 if (SERIALIZE(&destination, &destinationSize, myWeather->DeviceId, myWeather->WindSpeed, myWeather->Temperature, myWeather->Humidity) != CODEFIRST_OK)
Azure.IoT Build 2:eef448cf9eb7 201 {
Azure.IoT Build 2:eef448cf9eb7 202 (void)printf("Failed to serialize\r\n");
Azure.IoT Build 2:eef448cf9eb7 203 }
Azure.IoT Build 2:eef448cf9eb7 204 else
Azure.IoT Build 2:eef448cf9eb7 205 {
AzureIoTClient 38:6661a95af557 206 sendMessage(iotHubClientHandle, destination, destinationSize, myWeather);
Azure.IoT Build 2:eef448cf9eb7 207 free(destination);
Azure.IoT Build 2:eef448cf9eb7 208 }
Azure.IoT Build 2:eef448cf9eb7 209 }
Azure.IoT Build 2:eef448cf9eb7 210
Azure.IoT Build 2:eef448cf9eb7 211 /* wait for commands */
Azure.IoT Build 2:eef448cf9eb7 212 while (1)
Azure.IoT Build 2:eef448cf9eb7 213 {
Azure.IoT Build 2:eef448cf9eb7 214 IoTHubClient_LL_DoWork(iotHubClientHandle);
Azure.IoT Build 2:eef448cf9eb7 215 ThreadAPI_Sleep(100);
Azure.IoT Build 2:eef448cf9eb7 216 }
Azure.IoT Build 2:eef448cf9eb7 217 }
Azure.IoT Build 2:eef448cf9eb7 218
Azure.IoT Build 2:eef448cf9eb7 219 DESTROY_MODEL_INSTANCE(myWeather);
Azure.IoT Build 2:eef448cf9eb7 220 }
Azure.IoT Build 2:eef448cf9eb7 221 IoTHubClient_LL_Destroy(iotHubClientHandle);
Azure.IoT Build 2:eef448cf9eb7 222 }
Azure.IoT Build 2:eef448cf9eb7 223 serializer_deinit();
Azure.IoT Build 2:eef448cf9eb7 224 }
Azure.IoT Build 2:eef448cf9eb7 225 platform_deinit();
Azure.IoT Build 2:eef448cf9eb7 226 }
Azure.IoT Build 2:eef448cf9eb7 227 }