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@17:a6f7340182f9, 2016-07-18 (annotated)

Committer:
AzureIoTClient
Date:
Mon Jul 18 16:47:38 2016 -0700
Revision:
17:a6f7340182f9
Parent:
16:15f02cc1f940
Child:
25:6b2b9feb6dc3
1.0.11

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