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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@16:15f02cc1f940, 2016-07-01 (annotated)
- Committer:
- Azure.IoT Build
- Date:
- Fri Jul 01 10:45:25 2016 -0700
- Revision:
- 16:15f02cc1f940
- Parent:
- 9:db94158204f8
- Child:
- 17:a6f7340182f9
1.0.10
Who changed what in which revision?
User | Revision | Line number | New 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 | { |
Azure.IoT Build | 2:eef448cf9eb7 | 65 | int messageTrackingId = (intptr_t)userContextCallback; |
Azure.IoT Build | 2:eef448cf9eb7 | 66 | |
Azure.IoT Build | 2:eef448cf9eb7 | 67 | (void)printf("Message Id: %d 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 | } |