Secretariat STIoTChallenge / Mbed 2 deprecated Module3

Ultrasonic

Dependencies:   Cayenne-MQTT-mbed mbed Servo X_NUCLEO_IDW01M1v2 NetworkSocketAPI HCSR04

main.cpp@13:c5911ceac9ab, 2019-08-02 (annotated)

Committer:
stiotchallenge
Date:
Fri Aug 02 06:51:30 2019 +0000
Revision:
13:c5911ceac9ab
Parent:
12:dd98953c0a6d 
Module 3: Ultrasonic

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jburhenn 0:d20655cd1f3c 1 /**
jburhenn 0:d20655cd1f3c 2 * Example app for using the Cayenne MQTT C++ library to send and receive example data. This example uses
jburhenn 0:d20655cd1f3c 3 * the X-NUCLEO-IDW01M1 WiFi expansion board via the X_NUCLEO_IDW01M1v2 library.
jburhenn 0:d20655cd1f3c 4 */
jburhenn 0:d20655cd1f3c 5
jburhenn 0:d20655cd1f3c 6 #include "MQTTTimer.h"
jburhenn 0:d20655cd1f3c 7 #include "CayenneMQTTClient.h"
jburhenn 0:d20655cd1f3c 8 #include "MQTTNetworkIDW01M1.h"
jburhenn 0:d20655cd1f3c 9 #include "SpwfInterface.h"
stiotchallenge 9:e3a211745f71 10 #include "hcsr04.h"
stiotchallenge 13:c5911ceac9ab 11
jburhenn 0:d20655cd1f3c 12
jburhenn 0:d20655cd1f3c 13 // WiFi network info.
stiotchallenge 8:b19f86c36974 14 char* ssid = "iPhone";
stiotchallenge 8:b19f86c36974 15 char* wifiPassword = "abcd1234";
jburhenn 0:d20655cd1f3c 16
jburhenn 0:d20655cd1f3c 17 // Cayenne authentication info. This should be obtained from the Cayenne Dashboard.
stiotchallenge 8:b19f86c36974 18 char* username = "4f3fbcb0-3796-11e9-ad96-c15442ccb423";
stiotchallenge 8:b19f86c36974 19 char* password = "9e099f3d9aaedd7b76ca94044c6bb488c3999e3c";
stiotchallenge 9:e3a211745f71 20 char* clientID = "4288d2f0-a5a9-11e9-9636-f9904f7b864b";
jburhenn 0:d20655cd1f3c 21
jburhenn 0:d20655cd1f3c 22 SpwfSAInterface interface(D8, D2); // TX, RX
jburhenn 0:d20655cd1f3c 23 MQTTNetwork<SpwfSAInterface> network(interface);
jburhenn 2:445f09de09bd 24 CayenneMQTT::MQTTClient<MQTTNetwork<SpwfSAInterface>, MQTTTimer> mqttClient(network, username, password, clientID);
jburhenn 0:d20655cd1f3c 25
stiotchallenge 9:e3a211745f71 26 DigitalIn button1(USER_BUTTON);
jburhenn 1:a2d8aec2bb92 27 DigitalOut led1(LED1);
stiotchallenge 9:e3a211745f71 28 DigitalOut ledGreen(D11);
stiotchallenge 9:e3a211745f71 29 DigitalOut ledRed(D12);
stiotchallenge 12:dd98953c0a6d 30 HCSR04 sensor(D7, D6);
stiotchallenge 13:c5911ceac9ab 31
jburhenn 1:a2d8aec2bb92 32
stiotchallenge 8:b19f86c36974 33 int iotvalue;
stiotchallenge 9:e3a211745f71 34
stiotchallenge 9:e3a211745f71 35 //Function prototype new
stiotchallenge 12:dd98953c0a6d 36 MQTTTimer publishData(MQTTTimer, int, int);
stiotchallenge 9:e3a211745f71 37 MQTTTimer myFunction(MQTTTimer);
stiotchallenge 9:e3a211745f71 38
stiotchallenge 9:e3a211745f71 39 MQTTTimer myFunction (MQTTTimer timer){
stiotchallenge 9:e3a211745f71 40 /**
stiotchallenge 9:e3a211745f71 41 * Write your codes here.
stiotchallenge 9:e3a211745f71 42 **/
stiotchallenge 9:e3a211745f71 43 led1 = 1;
stiotchallenge 9:e3a211745f71 44 wait(0.2);
stiotchallenge 9:e3a211745f71 45 led1 = 0;
stiotchallenge 9:e3a211745f71 46 wait(0.2);
stiotchallenge 9:e3a211745f71 47
stiotchallenge 9:e3a211745f71 48
stiotchallenge 12:dd98953c0a6d 49 long distance = sensor.distance();
stiotchallenge 12:dd98953c0a6d 50 printf("distance %d \n",distance);
stiotchallenge 12:dd98953c0a6d 51 wait(1.0); // 1 sec
stiotchallenge 12:dd98953c0a6d 52 if (distance > 50) {
stiotchallenge 12:dd98953c0a6d 53 ledGreen = 0;
stiotchallenge 12:dd98953c0a6d 54 ledRed = 1;
stiotchallenge 12:dd98953c0a6d 55 }
stiotchallenge 12:dd98953c0a6d 56 if (distance <50) {
stiotchallenge 12:dd98953c0a6d 57 ledGreen = 1;
stiotchallenge 12:dd98953c0a6d 58 ledRed = 0;
stiotchallenge 12:dd98953c0a6d 59 }
stiotchallenge 9:e3a211745f71 60
stiotchallenge 13:c5911ceac9ab 61 timer = publishData(timer, ledGreen, ledRed);
stiotchallenge 9:e3a211745f71 62 return timer;
stiotchallenge 9:e3a211745f71 63 }
stiotchallenge 9:e3a211745f71 64
stiotchallenge 12:dd98953c0a6d 65 MQTTTimer publishData(MQTTTimer timer, int data1, int data2){
stiotchallenge 9:e3a211745f71 66 // Publish some example data every few seconds. This should be changed to send your actual data to Cayenne.
stiotchallenge 9:e3a211745f71 67 if (timer.expired()) {
stiotchallenge 9:e3a211745f71 68 int error = 0;
stiotchallenge 9:e3a211745f71 69 if ((error = mqttClient.publishData(DATA_TOPIC, 1, TYPE_VOLTAGE, UNIT_DIGITAL, data1)) != CAYENNE_SUCCESS) {
stiotchallenge 12:dd98953c0a6d 70 printf("Publish data failed, error: %d\n", error);
stiotchallenge 9:e3a211745f71 71 }
stiotchallenge 12:dd98953c0a6d 72 if ((error = mqttClient.publishData(DATA_TOPIC, 2, TYPE_VOLTAGE, UNIT_DIGITAL, data2)) != CAYENNE_SUCCESS) {
stiotchallenge 12:dd98953c0a6d 73 printf("Publish data failed, error: %d\n", error);
stiotchallenge 12:dd98953c0a6d 74 }
stiotchallenge 9:e3a211745f71 75 // Restart the countdown timer for publishing data every 5 seconds. Change the timeout parameter to publish at a different interval.
stiotchallenge 12:dd98953c0a6d 76 timer.countdown_ms(1500);
stiotchallenge 9:e3a211745f71 77 }
stiotchallenge 9:e3a211745f71 78 return timer;
stiotchallenge 9:e3a211745f71 79 }
stiotchallenge 9:e3a211745f71 80
jburhenn 0:d20655cd1f3c 81 /**
jburhenn 0:d20655cd1f3c 82 * Print the message info.
jburhenn 0:d20655cd1f3c 83 * @param[in] message The message received from the Cayenne server.
jburhenn 0:d20655cd1f3c 84 */
jburhenn 2:445f09de09bd 85 void outputMessage(CayenneMQTT::MessageData& message)
jburhenn 0:d20655cd1f3c 86 {
jburhenn 0:d20655cd1f3c 87 switch (message.topic) {
jburhenn 0:d20655cd1f3c 88 case COMMAND_TOPIC:
jburhenn 0:d20655cd1f3c 89 printf("topic=Command");
jburhenn 0:d20655cd1f3c 90 break;
jburhenn 0:d20655cd1f3c 91 case CONFIG_TOPIC:
jburhenn 0:d20655cd1f3c 92 printf("topic=Config");
jburhenn 0:d20655cd1f3c 93 break;
jburhenn 0:d20655cd1f3c 94 default:
jburhenn 0:d20655cd1f3c 95 printf("topic=%d", message.topic);
jburhenn 0:d20655cd1f3c 96 break;
jburhenn 0:d20655cd1f3c 97 }
jburhenn 0:d20655cd1f3c 98 printf(" channel=%d", message.channel);
jburhenn 0:d20655cd1f3c 99 if (message.clientID) {
jburhenn 0:d20655cd1f3c 100 printf(" clientID=%s", message.clientID);
jburhenn 0:d20655cd1f3c 101 }
jburhenn 0:d20655cd1f3c 102 if (message.type) {
jburhenn 0:d20655cd1f3c 103 printf(" type=%s", message.type);
jburhenn 0:d20655cd1f3c 104 }
jburhenn 0:d20655cd1f3c 105 for (size_t i = 0; i < message.valueCount; ++i) {
jburhenn 2:445f09de09bd 106 if (message.getValue(i)) {
jburhenn 2:445f09de09bd 107 printf(" value=%s", message.getValue(i));
jburhenn 0:d20655cd1f3c 108 }
jburhenn 2:445f09de09bd 109 if (message.getUnit(i)) {
jburhenn 2:445f09de09bd 110 printf(" unit=%s", message.getUnit(i));
jburhenn 0:d20655cd1f3c 111 }
jburhenn 0:d20655cd1f3c 112 }
jburhenn 0:d20655cd1f3c 113 if (message.id) {
jburhenn 0:d20655cd1f3c 114 printf(" id=%s", message.id);
jburhenn 0:d20655cd1f3c 115 }
jburhenn 0:d20655cd1f3c 116 printf("\n");
jburhenn 0:d20655cd1f3c 117 }
jburhenn 0:d20655cd1f3c 118
jburhenn 0:d20655cd1f3c 119 /**
jburhenn 0:d20655cd1f3c 120 * Handle messages received from the Cayenne server.
jburhenn 0:d20655cd1f3c 121 * @param[in] message The message received from the Cayenne server.
jburhenn 0:d20655cd1f3c 122 */
jburhenn 2:445f09de09bd 123 void messageArrived(CayenneMQTT::MessageData& message)
jburhenn 0:d20655cd1f3c 124 {
jburhenn 0:d20655cd1f3c 125 int error = 0;
stiotchallenge 8:b19f86c36974 126
jburhenn 0:d20655cd1f3c 127 // Add code to process the message. Here we just ouput the message data.
jburhenn 0:d20655cd1f3c 128 outputMessage(message);
jburhenn 0:d20655cd1f3c 129
jburhenn 1:a2d8aec2bb92 130 if (message.topic == COMMAND_TOPIC) {
jburhenn 1:a2d8aec2bb92 131 switch(message.channel) {
jburhenn 1:a2d8aec2bb92 132 case 0:
jburhenn 1:a2d8aec2bb92 133 // Set the onboard LED state
stiotchallenge 8:b19f86c36974 134 iotvalue = atoi(message.getValue());
stiotchallenge 8:b19f86c36974 135 printf("From Cayenne = %d\n",iotvalue);
jburhenn 1:a2d8aec2bb92 136 // Publish the updated LED state
jburhenn 2:445f09de09bd 137 if ((error = mqttClient.publishData(DATA_TOPIC, message.channel, NULL, NULL, message.getValue())) != CAYENNE_SUCCESS) {
jburhenn 1:a2d8aec2bb92 138 printf("Publish LED state failure, error: %d\n", error);
jburhenn 1:a2d8aec2bb92 139 }
jburhenn 1:a2d8aec2bb92 140 break;
jburhenn 1:a2d8aec2bb92 141 }
jburhenn 1:a2d8aec2bb92 142
jburhenn 1:a2d8aec2bb92 143 // If this is a command message we publish a response. Here we are just sending a default 'OK' response.
jburhenn 1:a2d8aec2bb92 144 // An error response should be sent if there are issues processing the message.
jburhenn 4:939f308d004a 145 if ((error = mqttClient.publishResponse(message.id, NULL, message.clientID)) != CAYENNE_SUCCESS) {
jburhenn 1:a2d8aec2bb92 146 printf("Response failure, error: %d\n", error);
jburhenn 1:a2d8aec2bb92 147 }
jburhenn 0:d20655cd1f3c 148 }
jburhenn 0:d20655cd1f3c 149 }
jburhenn 0:d20655cd1f3c 150
jburhenn 0:d20655cd1f3c 151 /**
jburhenn 0:d20655cd1f3c 152 * Connect to the Cayenne server.
jburhenn 0:d20655cd1f3c 153 * @return Returns CAYENNE_SUCCESS if the connection succeeds, or an error code otherwise.
jburhenn 0:d20655cd1f3c 154 */
jburhenn 0:d20655cd1f3c 155 int connectClient(void)
jburhenn 0:d20655cd1f3c 156 {
jburhenn 0:d20655cd1f3c 157 int error = 0;
jburhenn 0:d20655cd1f3c 158 // Connect to the server.
jburhenn 0:d20655cd1f3c 159 printf("Connecting to %s:%d\n", CAYENNE_DOMAIN, CAYENNE_PORT);
jburhenn 0:d20655cd1f3c 160 while ((error = network.connect(CAYENNE_DOMAIN, CAYENNE_PORT)) != 0) {
jburhenn 0:d20655cd1f3c 161 printf("TCP connect failed, error: %d\n", error);
jburhenn 0:d20655cd1f3c 162 wait(2);
jburhenn 0:d20655cd1f3c 163 }
jburhenn 0:d20655cd1f3c 164
jburhenn 2:445f09de09bd 165 if ((error = mqttClient.connect()) != MQTT::SUCCESS) {
jburhenn 0:d20655cd1f3c 166 printf("MQTT connect failed, error: %d\n", error);
jburhenn 0:d20655cd1f3c 167 return error;
jburhenn 0:d20655cd1f3c 168 }
jburhenn 0:d20655cd1f3c 169 printf("Connected\n");
jburhenn 0:d20655cd1f3c 170
jburhenn 0:d20655cd1f3c 171 // Subscribe to required topics.
jburhenn 0:d20655cd1f3c 172 if ((error = mqttClient.subscribe(COMMAND_TOPIC, CAYENNE_ALL_CHANNELS)) != CAYENNE_SUCCESS) {
jburhenn 0:d20655cd1f3c 173 printf("Subscription to Command topic failed, error: %d\n", error);
jburhenn 0:d20655cd1f3c 174 }
jburhenn 0:d20655cd1f3c 175 if ((error = mqttClient.subscribe(CONFIG_TOPIC, CAYENNE_ALL_CHANNELS)) != CAYENNE_SUCCESS) {
jburhenn 0:d20655cd1f3c 176 printf("Subscription to Config topic failed, error:%d\n", error);
jburhenn 0:d20655cd1f3c 177 }
jburhenn 0:d20655cd1f3c 178
jburhenn 0:d20655cd1f3c 179 // Send device info. Here we just send some example values for the system info. These should be changed to use actual system data, or removed if not needed.
jburhenn 0:d20655cd1f3c 180 mqttClient.publishData(SYS_VERSION_TOPIC, CAYENNE_NO_CHANNEL, NULL, NULL, CAYENNE_VERSION);
jburhenn 0:d20655cd1f3c 181 mqttClient.publishData(SYS_MODEL_TOPIC, CAYENNE_NO_CHANNEL, NULL, NULL, "mbedDevice");
jburhenn 2:445f09de09bd 182 //mqttClient.publishData(SYS_CPU_MODEL_TOPIC, CAYENNE_NO_CHANNEL, NULL, NULL, "CPU Model");
jburhenn 2:445f09de09bd 183 //mqttClient.publishData(SYS_CPU_SPEED_TOPIC, CAYENNE_NO_CHANNEL, NULL, NULL, "1000000000");
jburhenn 0:d20655cd1f3c 184
jburhenn 0:d20655cd1f3c 185 return CAYENNE_SUCCESS;
jburhenn 0:d20655cd1f3c 186 }
jburhenn 0:d20655cd1f3c 187
jburhenn 0:d20655cd1f3c 188 /**
jburhenn 0:d20655cd1f3c 189 * Main loop where MQTT code is run.
jburhenn 0:d20655cd1f3c 190 */
jburhenn 0:d20655cd1f3c 191 void loop(void)
jburhenn 0:d20655cd1f3c 192 {
jburhenn 7:78cefe0937ab 193 // Start the countdown timer for publishing data every 5 seconds. Change the timeout parameter to publish at a different interval.
stiotchallenge 12:dd98953c0a6d 194 MQTTTimer timer(1500);
jburhenn 0:d20655cd1f3c 195
jburhenn 0:d20655cd1f3c 196 while (true) {
stiotchallenge 8:b19f86c36974 197
jburhenn 0:d20655cd1f3c 198 // Yield to allow MQTT message processing.
jburhenn 0:d20655cd1f3c 199 mqttClient.yield(1000);
jburhenn 0:d20655cd1f3c 200
jburhenn 0:d20655cd1f3c 201 // Check that we are still connected, if not, reconnect.
jburhenn 0:d20655cd1f3c 202 if (!network.connected() || !mqttClient.connected()) {
jburhenn 0:d20655cd1f3c 203 network.disconnect();
jburhenn 0:d20655cd1f3c 204 mqttClient.disconnect();
jburhenn 0:d20655cd1f3c 205 printf("Reconnecting\n");
jburhenn 0:d20655cd1f3c 206 while (connectClient() != CAYENNE_SUCCESS) {
jburhenn 0:d20655cd1f3c 207 wait(2);
jburhenn 0:d20655cd1f3c 208 printf("Reconnect failed, retrying\n");
jburhenn 0:d20655cd1f3c 209 }
stiotchallenge 9:e3a211745f71 210 }
stiotchallenge 9:e3a211745f71 211 timer = myFunction (timer);
jburhenn 0:d20655cd1f3c 212 }
jburhenn 0:d20655cd1f3c 213 }
jburhenn 0:d20655cd1f3c 214
jburhenn 0:d20655cd1f3c 215 /**
jburhenn 0:d20655cd1f3c 216 * Main function.
jburhenn 0:d20655cd1f3c 217 */
jburhenn 0:d20655cd1f3c 218 int main()
jburhenn 0:d20655cd1f3c 219 {
jburhenn 0:d20655cd1f3c 220 // Initialize the network interface.
jburhenn 0:d20655cd1f3c 221 printf("Initializing interface\n");
jburhenn 0:d20655cd1f3c 222 interface.connect(ssid, wifiPassword, NSAPI_SECURITY_WPA2);
jburhenn 0:d20655cd1f3c 223
jburhenn 0:d20655cd1f3c 224 // Set the default function that receives Cayenne messages.
jburhenn 0:d20655cd1f3c 225 mqttClient.setDefaultMessageHandler(messageArrived);
jburhenn 0:d20655cd1f3c 226
jburhenn 0:d20655cd1f3c 227 // Connect to Cayenne.
jburhenn 0:d20655cd1f3c 228 if (connectClient() == CAYENNE_SUCCESS) {
jburhenn 0:d20655cd1f3c 229 // Run main loop.
jburhenn 0:d20655cd1f3c 230 loop();
jburhenn 0:d20655cd1f3c 231 }
jburhenn 0:d20655cd1f3c 232 else {
jburhenn 0:d20655cd1f3c 233 printf("Connection failed, exiting\n");
jburhenn 0:d20655cd1f3c 234 }
jburhenn 0:d20655cd1f3c 235
jburhenn 0:d20655cd1f3c 236 if (mqttClient.connected())
jburhenn 0:d20655cd1f3c 237 mqttClient.disconnect();
jburhenn 0:d20655cd1f3c 238 if (network.connected())
jburhenn 0:d20655cd1f3c 239 network.disconnect();
jburhenn 0:d20655cd1f3c 240
jburhenn 0:d20655cd1f3c 241 return 0;
stiotchallenge 9:e3a211745f71 242 }