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@26:3126b9d4187b, 2016-12-14 (annotated)

Committer:
Azure.IoT.Build
Date:
Wed Dec 14 16:04:11 2016 -0800
Revision:
26:3126b9d4187b
Parent:
25:6b2b9feb6dc3
Child:
30:7bb030702a93
1.1.2

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),
Azure.IoT Build 2:eef448cf9eb7 39 WITH_ACTION(TurnFanOn),
Azure.IoT Build 2:eef448cf9eb7 40 WITH_ACTION(TurnFanOff),
Azure.IoT Build 2:eef448cf9eb7 41 WITH_ACTION(SetAirResistance, int, Position)
Azure.IoT Build 2:eef448cf9eb7 42 );
Azure.IoT Build 2:eef448cf9eb7 43
Azure.IoT Build 2:eef448cf9eb7 44 END_NAMESPACE(WeatherStation);
Azure.IoT Build 2:eef448cf9eb7 45
Azure.IoT Build 2:eef448cf9eb7 46
Azure.IoT Build 2:eef448cf9eb7 47 EXECUTE_COMMAND_RESULT TurnFanOn(ContosoAnemometer* device)
Azure.IoT Build 2:eef448cf9eb7 48 {
Azure.IoT Build 2:eef448cf9eb7 49 (void)device;
Azure.IoT Build 2:eef448cf9eb7 50 (void)printf("Turning fan on.\r\n");
Azure.IoT Build 2:eef448cf9eb7 51 return EXECUTE_COMMAND_SUCCESS;
Azure.IoT Build 2:eef448cf9eb7 52 }
Azure.IoT Build 2:eef448cf9eb7 53
Azure.IoT Build 2:eef448cf9eb7 54 EXECUTE_COMMAND_RESULT TurnFanOff(ContosoAnemometer* device)
Azure.IoT Build 2:eef448cf9eb7 55 {
Azure.IoT Build 2:eef448cf9eb7 56 (void)device;
Azure.IoT Build 2:eef448cf9eb7 57 (void)printf("Turning fan off.\r\n");
Azure.IoT Build 2:eef448cf9eb7 58 return EXECUTE_COMMAND_SUCCESS;
Azure.IoT Build 2:eef448cf9eb7 59 }
Azure.IoT Build 2:eef448cf9eb7 60
Azure.IoT Build 2:eef448cf9eb7 61 EXECUTE_COMMAND_RESULT SetAirResistance(ContosoAnemometer* device, int Position)
Azure.IoT Build 2:eef448cf9eb7 62 {
Azure.IoT Build 2:eef448cf9eb7 63 (void)device;
Azure.IoT Build 2:eef448cf9eb7 64 (void)printf("Setting Air Resistance Position to %d.\r\n", Position);
Azure.IoT Build 2:eef448cf9eb7 65 return EXECUTE_COMMAND_SUCCESS;
Azure.IoT Build 2:eef448cf9eb7 66 }
Azure.IoT Build 2:eef448cf9eb7 67
Azure.IoT Build 2:eef448cf9eb7 68 void sendCallback(IOTHUB_CLIENT_CONFIRMATION_RESULT result, void* userContextCallback)
Azure.IoT Build 2:eef448cf9eb7 69 {
AzureIoTClient 17:a6f7340182f9 70 unsigned int messageTrackingId = (unsigned int)(uintptr_t)userContextCallback;
Azure.IoT Build 2:eef448cf9eb7 71
AzureIoTClient 17:a6f7340182f9 72 (void)printf("Message Id: %u Received.\r\n", messageTrackingId);
Azure.IoT Build 2:eef448cf9eb7 73
Azure.IoT Build 2:eef448cf9eb7 74 (void)printf("Result Call Back Called! Result is: %s \r\n", ENUM_TO_STRING(IOTHUB_CLIENT_CONFIRMATION_RESULT, result));
Azure.IoT Build 2:eef448cf9eb7 75 }
Azure.IoT Build 2:eef448cf9eb7 76
Azure.IoT Build 2:eef448cf9eb7 77 static void sendMessage(IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle, const unsigned char* buffer, size_t size)
Azure.IoT Build 2:eef448cf9eb7 78 {
Azure.IoT Build 2:eef448cf9eb7 79 static unsigned int messageTrackingId;
Azure.IoT Build 2:eef448cf9eb7 80 IOTHUB_MESSAGE_HANDLE messageHandle = IoTHubMessage_CreateFromByteArray(buffer, size);
Azure.IoT Build 2:eef448cf9eb7 81 if (messageHandle == NULL)
Azure.IoT Build 2:eef448cf9eb7 82 {
Azure.IoT Build 2:eef448cf9eb7 83 printf("unable to create a new IoTHubMessage\r\n");
Azure.IoT Build 2:eef448cf9eb7 84 }
Azure.IoT Build 2:eef448cf9eb7 85 else
Azure.IoT Build 2:eef448cf9eb7 86 {
Azure.IoT Build 2:eef448cf9eb7 87 if (IoTHubClient_LL_SendEventAsync(iotHubClientHandle, messageHandle, sendCallback, (void*)(uintptr_t)messageTrackingId) != IOTHUB_CLIENT_OK)
Azure.IoT Build 2:eef448cf9eb7 88 {
Azure.IoT Build 2:eef448cf9eb7 89 printf("failed to hand over the message to IoTHubClient");
Azure.IoT Build 2:eef448cf9eb7 90 }
Azure.IoT Build 2:eef448cf9eb7 91 else
Azure.IoT Build 2:eef448cf9eb7 92 {
Azure.IoT Build 2:eef448cf9eb7 93 printf("IoTHubClient accepted the message for delivery\r\n");
Azure.IoT Build 2:eef448cf9eb7 94 }
Azure.IoT Build 2:eef448cf9eb7 95 IoTHubMessage_Destroy(messageHandle);
Azure.IoT Build 2:eef448cf9eb7 96 }
Azure.IoT Build 2:eef448cf9eb7 97 free((void*)buffer);
Azure.IoT Build 2:eef448cf9eb7 98 messageTrackingId++;
Azure.IoT Build 2:eef448cf9eb7 99 }
Azure.IoT Build 2:eef448cf9eb7 100
Azure.IoT Build 2:eef448cf9eb7 101 /*this function "links" IoTHub to the serialization library*/
Azure.IoT Build 2:eef448cf9eb7 102 static IOTHUBMESSAGE_DISPOSITION_RESULT IoTHubMessage(IOTHUB_MESSAGE_HANDLE message, void* userContextCallback)
Azure.IoT Build 2:eef448cf9eb7 103 {
Azure.IoT Build 2:eef448cf9eb7 104 IOTHUBMESSAGE_DISPOSITION_RESULT result;
Azure.IoT Build 2:eef448cf9eb7 105 const unsigned char* buffer;
Azure.IoT Build 2:eef448cf9eb7 106 size_t size;
Azure.IoT Build 2:eef448cf9eb7 107 if (IoTHubMessage_GetByteArray(message, &buffer, &size) != IOTHUB_MESSAGE_OK)
Azure.IoT Build 2:eef448cf9eb7 108 {
Azure.IoT Build 2:eef448cf9eb7 109 printf("unable to IoTHubMessage_GetByteArray\r\n");
Azure.IoT Build 2:eef448cf9eb7 110 result = EXECUTE_COMMAND_ERROR;
Azure.IoT Build 2:eef448cf9eb7 111 }
Azure.IoT Build 2:eef448cf9eb7 112 else
Azure.IoT Build 2:eef448cf9eb7 113 {
Azure.IoT Build 2:eef448cf9eb7 114 /*buffer is not zero terminated*/
Azure.IoT Build 2:eef448cf9eb7 115 char* temp = malloc(size + 1);
Azure.IoT Build 2:eef448cf9eb7 116 if (temp == NULL)
Azure.IoT Build 2:eef448cf9eb7 117 {
Azure.IoT Build 2:eef448cf9eb7 118 printf("failed to malloc\r\n");
Azure.IoT Build 2:eef448cf9eb7 119 result = EXECUTE_COMMAND_ERROR;
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 memcpy(temp, buffer, size);
Azure.IoT Build 2:eef448cf9eb7 124 temp[size] = '\0';
Azure.IoT Build 2:eef448cf9eb7 125 EXECUTE_COMMAND_RESULT executeCommandResult = EXECUTE_COMMAND(userContextCallback, temp);
Azure.IoT Build 2:eef448cf9eb7 126 result =
Azure.IoT Build 2:eef448cf9eb7 127 (executeCommandResult == EXECUTE_COMMAND_ERROR) ? IOTHUBMESSAGE_ABANDONED :
Azure.IoT Build 2:eef448cf9eb7 128 (executeCommandResult == EXECUTE_COMMAND_SUCCESS) ? IOTHUBMESSAGE_ACCEPTED :
Azure.IoT Build 2:eef448cf9eb7 129 IOTHUBMESSAGE_REJECTED;
Azure.IoT Build 2:eef448cf9eb7 130 free(temp);
Azure.IoT Build 2:eef448cf9eb7 131 }
Azure.IoT Build 2:eef448cf9eb7 132 }
Azure.IoT Build 2:eef448cf9eb7 133 return result;
Azure.IoT Build 2:eef448cf9eb7 134 }
Azure.IoT Build 2:eef448cf9eb7 135
Azure.IoT Build 2:eef448cf9eb7 136 void simplesample_mqtt_run(void)
Azure.IoT Build 2:eef448cf9eb7 137 {
Azure.IoT Build 2:eef448cf9eb7 138 if (platform_init() != 0)
Azure.IoT Build 2:eef448cf9eb7 139 {
Azure.IoT Build 2:eef448cf9eb7 140 (void)printf("Failed to initialize platform.\r\n");
Azure.IoT Build 2:eef448cf9eb7 141 }
Azure.IoT Build 2:eef448cf9eb7 142 else
Azure.IoT Build 2:eef448cf9eb7 143 {
Azure.IoT Build 2:eef448cf9eb7 144 if (serializer_init(NULL) != SERIALIZER_OK)
Azure.IoT Build 2:eef448cf9eb7 145 {
Azure.IoT Build 2:eef448cf9eb7 146 (void)printf("Failed on serializer_init\r\n");
Azure.IoT Build 2:eef448cf9eb7 147 }
Azure.IoT Build 2:eef448cf9eb7 148 else
Azure.IoT Build 2:eef448cf9eb7 149 {
Azure.IoT Build 2:eef448cf9eb7 150 IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle = IoTHubClient_LL_CreateFromConnectionString(connectionString, MQTT_Protocol);
Azure.IoT Build 2:eef448cf9eb7 151 srand((unsigned int)time(NULL));
Azure.IoT Build 2:eef448cf9eb7 152 int avgWindSpeed = 10;
Azure.IoT Build 2:eef448cf9eb7 153
Azure.IoT Build 2:eef448cf9eb7 154 if (iotHubClientHandle == NULL)
Azure.IoT Build 2:eef448cf9eb7 155 {
Azure.IoT Build 2:eef448cf9eb7 156 (void)printf("Failed on IoTHubClient_LL_Create\r\n");
Azure.IoT Build 2:eef448cf9eb7 157 }
Azure.IoT Build 2:eef448cf9eb7 158 else
Azure.IoT Build 2:eef448cf9eb7 159 {
AzureIoTClient 6:55659b146374 160 #ifdef MBED_BUILD_TIMESTAMP
AzureIoTClient 6:55659b146374 161 // For mbed add the certificate information
AzureIoTClient 6:55659b146374 162 if (IoTHubClient_LL_SetOption(iotHubClientHandle, "TrustedCerts", certificates) != IOTHUB_CLIENT_OK)
AzureIoTClient 6:55659b146374 163 {
AzureIoTClient 6:55659b146374 164 (void)printf("failure to set option \"TrustedCerts\"\r\n");
AzureIoTClient 6:55659b146374 165 }
AzureIoTClient 6:55659b146374 166 #endif // MBED_BUILD_TIMESTAMP
AzureIoTClient 6:55659b146374 167
Azure.IoT Build 2:eef448cf9eb7 168
Azure.IoT Build 2:eef448cf9eb7 169 ContosoAnemometer* myWeather = CREATE_MODEL_INSTANCE(WeatherStation, ContosoAnemometer);
Azure.IoT Build 2:eef448cf9eb7 170 if (myWeather == NULL)
Azure.IoT Build 2:eef448cf9eb7 171 {
Azure.IoT Build 2:eef448cf9eb7 172 (void)printf("Failed on CREATE_MODEL_INSTANCE\r\n");
Azure.IoT Build 2:eef448cf9eb7 173 }
Azure.IoT Build 2:eef448cf9eb7 174 else
Azure.IoT Build 2:eef448cf9eb7 175 {
Azure.IoT Build 2:eef448cf9eb7 176 if (IoTHubClient_LL_SetMessageCallback(iotHubClientHandle, IoTHubMessage, myWeather) != IOTHUB_CLIENT_OK)
Azure.IoT Build 2:eef448cf9eb7 177 {
Azure.IoT Build 2:eef448cf9eb7 178 printf("unable to IoTHubClient_SetMessageCallback\r\n");
Azure.IoT Build 2:eef448cf9eb7 179 }
Azure.IoT Build 2:eef448cf9eb7 180 else
Azure.IoT Build 2:eef448cf9eb7 181 {
Azure.IoT Build 2:eef448cf9eb7 182 myWeather->DeviceId = "myFirstDevice";
Azure.IoT Build 2:eef448cf9eb7 183 myWeather->WindSpeed = avgWindSpeed + (rand() % 4 + 2);
Azure.IoT Build 2:eef448cf9eb7 184 {
Azure.IoT Build 2:eef448cf9eb7 185 unsigned char* destination;
Azure.IoT Build 2:eef448cf9eb7 186 size_t destinationSize;
AzureIoTClient 25:6b2b9feb6dc3 187 if (SERIALIZE(&destination, &destinationSize, myWeather->DeviceId, myWeather->WindSpeed) != CODEFIRST_OK)
Azure.IoT Build 2:eef448cf9eb7 188 {
Azure.IoT Build 2:eef448cf9eb7 189 (void)printf("Failed to serialize\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 IOTHUB_MESSAGE_HANDLE messageHandle = IoTHubMessage_CreateFromByteArray(destination, destinationSize);
Azure.IoT Build 2:eef448cf9eb7 194 if (messageHandle == NULL)
Azure.IoT Build 2:eef448cf9eb7 195 {
Azure.IoT Build 2:eef448cf9eb7 196 printf("unable to create a new IoTHubMessage\r\n");
Azure.IoT Build 2:eef448cf9eb7 197 }
Azure.IoT Build 2:eef448cf9eb7 198 else
Azure.IoT Build 2:eef448cf9eb7 199 {
Azure.IoT Build 2:eef448cf9eb7 200 if (IoTHubClient_LL_SendEventAsync(iotHubClientHandle, messageHandle, sendCallback, (void*)1) != IOTHUB_CLIENT_OK)
Azure.IoT Build 2:eef448cf9eb7 201 {
Azure.IoT Build 2:eef448cf9eb7 202 printf("failed to hand over the message to IoTHubClient");
Azure.IoT Build 2:eef448cf9eb7 203 }
Azure.IoT Build 2:eef448cf9eb7 204 else
Azure.IoT Build 2:eef448cf9eb7 205 {
Azure.IoT Build 2:eef448cf9eb7 206 printf("IoTHubClient accepted the message for delivery\r\n");
Azure.IoT Build 2:eef448cf9eb7 207 }
Azure.IoT Build 2:eef448cf9eb7 208
Azure.IoT Build 2:eef448cf9eb7 209 IoTHubMessage_Destroy(messageHandle);
Azure.IoT Build 2:eef448cf9eb7 210 }
Azure.IoT Build 2:eef448cf9eb7 211 free(destination);
Azure.IoT Build 2:eef448cf9eb7 212 }
Azure.IoT Build 2:eef448cf9eb7 213 }
Azure.IoT Build 2:eef448cf9eb7 214
Azure.IoT Build 2:eef448cf9eb7 215 /* wait for commands */
Azure.IoT Build 2:eef448cf9eb7 216 while (1)
Azure.IoT Build 2:eef448cf9eb7 217 {
Azure.IoT Build 2:eef448cf9eb7 218 IoTHubClient_LL_DoWork(iotHubClientHandle);
Azure.IoT Build 2:eef448cf9eb7 219 ThreadAPI_Sleep(100);
Azure.IoT Build 2:eef448cf9eb7 220 }
Azure.IoT Build 2:eef448cf9eb7 221 }
Azure.IoT Build 2:eef448cf9eb7 222
Azure.IoT Build 2:eef448cf9eb7 223 DESTROY_MODEL_INSTANCE(myWeather);
Azure.IoT Build 2:eef448cf9eb7 224 }
Azure.IoT Build 2:eef448cf9eb7 225 IoTHubClient_LL_Destroy(iotHubClientHandle);
Azure.IoT Build 2:eef448cf9eb7 226 }
Azure.IoT Build 2:eef448cf9eb7 227 serializer_deinit();
Azure.IoT Build 2:eef448cf9eb7 228 }
Azure.IoT Build 2:eef448cf9eb7 229 platform_deinit();
Azure.IoT Build 2:eef448cf9eb7 230 }
Azure.IoT Build 2:eef448cf9eb7 231 }