Satoru Yoshida / Mbed 2 deprecated IBMIoTSimpleClient

It can be run only with mbed LPC1768, LAN socket and DHT11 sensor. mbed application board is not needed.

Dependencies:   DHT11 EthernetInterface MQTT mbed-rtos mbed

Fork of IBMIoTClientEthernetExample by IBM Watson IoT

Example Photo /media/uploads/strysd/simpleiot.png

- 水魚堂さんの回路図エディタ BSch3V を利用して作成しました。回路図データ /media/uploads/strysd/simpleiot.ce3

- DHT11 は、masahiro's electronic lab さんで配布されている部品ライブラリを利用しました。http://www.eleclabo.com/denshi/doc/bschlib.html

/media/uploads/strysd/simpleiot_jittai_1.jpg

/media/uploads/strysd/simpleiot_jittai_2.jpg

/media/uploads/strysd/simpleiot_jittai_3.jpg

main.cpp@20:d8387eff818d, 2016-10-15 (annotated)

Committer:
strysd
Date:
Sat Oct 15 05:55:27 2016 +0000
Revision:
20:d8387eff818d
Parent:
18:94da9de96d54 
first commit after fork

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samdanbury 6:37b6d0d56190 1 /*******************************************************************************
icraggs 16:2420bfbf5f1c 2 * Copyright (c) 2014, 2015 IBM Corp.
samdanbury 6:37b6d0d56190 3 *
samdanbury 6:37b6d0d56190 4 * All rights reserved. This program and the accompanying materials
samdanbury 6:37b6d0d56190 5 * are made available under the terms of the Eclipse Public License v1.0
samdanbury 6:37b6d0d56190 6 * and Eclipse Distribution License v1.0 which accompany this distribution.
samdanbury 6:37b6d0d56190 7 *
samdanbury 6:37b6d0d56190 8 * The Eclipse Public License is available at
samdanbury 6:37b6d0d56190 9 * http://www.eclipse.org/legal/epl-v10.html
samdanbury 6:37b6d0d56190 10 * and the Eclipse Distribution License is available at
samdanbury 6:37b6d0d56190 11 * http://www.eclipse.org/org/documents/edl-v10.php.
samdanbury 6:37b6d0d56190 12 *
samdanbury 6:37b6d0d56190 13 * Contributors:
samdanbury 6:37b6d0d56190 14 * Sam Danbury - initial implementation
samdanbury 6:37b6d0d56190 15 * Ian Craggs - refactoring to remove STL and other changes
icraggs 8:80d49dd91542 16 * Sam Grove - added check for Ethernet cable.
chris 10:0b5e0dfee08e 17 * Chris Styles - Added additional menu screen for software revision
icraggs 16:2420bfbf5f1c 18 * James Sutton - Mac fix and extra debug
icraggs 16:2420bfbf5f1c 19 * Ian Craggs - add not authorized messages
strysd 20:d8387eff818d 20 *******************************************************************************
strysd 20:d8387eff818d 21 * Forked by Satoru Yoshida 2016/Oct
strysd 20:d8387eff818d 22 * Removed support for mbed application board, this program can run only
strysd 20:d8387eff818d 23 * set of mbed LPC1768, LAN socket and DHT11 sensor
samdanbury 6:37b6d0d56190 24 *******************************************************************************/
samdanbury 6:37b6d0d56190 25
strysd 20:d8387eff818d 26
samdanbury 6:37b6d0d56190 27 #include "MQTTClient.h"
samdanbury 6:37b6d0d56190 28 #include "MQTTEthernet.h"
samdanbury 6:37b6d0d56190 29 #include "rtos.h"
samdanbury 6:37b6d0d56190 30
chris 10:0b5e0dfee08e 31 // Update this to the next number *before* a commit
strysd 20:d8387eff818d 32 #define __APP_SW_REVISION__ "1"
chris 10:0b5e0dfee08e 33
samdanbury 6:37b6d0d56190 34 // Configuration values needed to connect to IBM IoT Cloud
strysd 20:d8387eff818d 35 #define ORG "" // For a registered connection, replace with your org
strysd 20:d8387eff818d 36 #define ID "" // For a registered connection, replace with your device id, not MAC address
strysd 20:d8387eff818d 37 #define AUTH_TOKEN "" // For a registered connection, replace with your auth-token
strysd 20:d8387eff818d 38 #define TYPE DEFAULT_TYPE_NAME // For a registered connection, replace with your type
samdanbury 6:37b6d0d56190 39
samdanbury 6:37b6d0d56190 40 #define MQTT_PORT 1883
samdanbury 6:37b6d0d56190 41 #define MQTT_TLS_PORT 8883
samdanbury 6:37b6d0d56190 42 #define IBM_IOT_PORT MQTT_PORT
samdanbury 6:37b6d0d56190 43
samdanbury 6:37b6d0d56190 44 #define MQTT_MAX_PACKET_SIZE 250
samdanbury 6:37b6d0d56190 45
samdanbury 6:37b6d0d56190 46 #include "LPC1768.h"
samdanbury 6:37b6d0d56190 47
jsutton 14:1f961d19f3cf 48
icraggs 8:80d49dd91542 49 bool quickstartMode = true;
samdanbury 6:37b6d0d56190 50 char org[11] = ORG;
samdanbury 6:37b6d0d56190 51 char type[30] = TYPE;
strysd 20:d8387eff818d 52 char id[30] = ID; // device id
samdanbury 6:37b6d0d56190 53 char auth_token[30] = AUTH_TOKEN; // Auth_token is only used in non-quickstart mode
samdanbury 6:37b6d0d56190 54
samdanbury 6:37b6d0d56190 55 bool connected = false;
jsutton 14:1f961d19f3cf 56 bool mqttConnecting = false;
jsutton 14:1f961d19f3cf 57 bool netConnected = false;
jsutton 14:1f961d19f3cf 58 bool netConnecting = false;
jsutton 14:1f961d19f3cf 59 bool ethernetInitialising = true;
icraggs 16:2420bfbf5f1c 60 int connack_rc = 0; // MQTT connack return code
jsutton 14:1f961d19f3cf 61 int retryAttempt = 0;
jsutton 14:1f961d19f3cf 62
samdanbury 6:37b6d0d56190 63 int blink_interval = 0;
samdanbury 6:37b6d0d56190 64
jsutton 13:85801e3b83d3 65 char* ip_addr = "";
jsutton 13:85801e3b83d3 66 char* gateway_addr = "";
jsutton 14:1f961d19f3cf 67 char* host_addr = "";
jsutton 14:1f961d19f3cf 68 int connectTimeout = 1000;
jsutton 14:1f961d19f3cf 69
jsutton 14:1f961d19f3cf 70 // If we wanted to manually set the MAC address,
jsutton 14:1f961d19f3cf 71 // this is how to do it. In this example, we take
jsutton 14:1f961d19f3cf 72 // the original Mbed Set MAC address and combine it
jsutton 14:1f961d19f3cf 73 // with a prefix of our choosing.
jsutton 14:1f961d19f3cf 74 /*
jsutton 14:1f961d19f3cf 75 extern "C" void $Super$$mbed_mac_address(char *s);
jsutton 14:1f961d19f3cf 76 extern "C" void $Sub$$mbed_mac_address(char *s)
jsutton 14:1f961d19f3cf 77 {
jsutton 15:09458079f4bb 78 char originalMAC[6] = "";
jsutton 15:09458079f4bb 79 $Super$$mbed_mac_address(originalMAC);
jsutton 14:1f961d19f3cf 80
jsutton 14:1f961d19f3cf 81 char mac[6];
jsutton 14:1f961d19f3cf 82 mac[0] = 0x00;
jsutton 14:1f961d19f3cf 83 mac[1] = 0x08;
jsutton 14:1f961d19f3cf 84 mac[2] = 0xdc;
jsutton 15:09458079f4bb 85 mac[3] = originalMAC[3];
jsutton 15:09458079f4bb 86 mac[4] = originalMAC[4];
jsutton 15:09458079f4bb 87 mac[5] = originalMAC[5];
jsutton 14:1f961d19f3cf 88 memcpy(s, mac, 6);
jsutton 14:1f961d19f3cf 89 }
jsutton 14:1f961d19f3cf 90 */
jsutton 13:85801e3b83d3 91
samdanbury 6:37b6d0d56190 92 /**
samdanbury 6:37b6d0d56190 93 * Display a message on the LCD screen prefixed with IBM IoT Cloud
samdanbury 6:37b6d0d56190 94 */
samdanbury 6:37b6d0d56190 95 int connect(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
samdanbury 6:37b6d0d56190 96 {
samdanbury 6:37b6d0d56190 97 const char* iot_ibm = ".messaging.internetofthings.ibmcloud.com";
samdanbury 6:37b6d0d56190 98
samdanbury 6:37b6d0d56190 99 char hostname[strlen(org) + strlen(iot_ibm) + 1];
samdanbury 6:37b6d0d56190 100 sprintf(hostname, "%s%s", org, iot_ibm);
jsutton 13:85801e3b83d3 101 EthernetInterface& eth = ipstack->getEth();
jsutton 13:85801e3b83d3 102 ip_addr = eth.getIPAddress();
jsutton 13:85801e3b83d3 103 gateway_addr = eth.getGateway();
jsutton 14:1f961d19f3cf 104
jsutton 14:1f961d19f3cf 105 // Construct clientId - d:org:type:id
jsutton 14:1f961d19f3cf 106 char clientId[strlen(org) + strlen(type) + strlen(id) + 5];
jsutton 14:1f961d19f3cf 107 sprintf(clientId, "d:%s:%s:%s", org, type, id);
jsutton 14:1f961d19f3cf 108
icraggs 16:2420bfbf5f1c 109 // Network debug statements
jsutton 14:1f961d19f3cf 110 LOG("=====================================\n");
jsutton 14:1f961d19f3cf 111 LOG("Connecting Ethernet.\n");
jsutton 14:1f961d19f3cf 112 LOG("IP ADDRESS: %s\n", eth.getIPAddress());
jsutton 14:1f961d19f3cf 113 LOG("MAC ADDRESS: %s\n", eth.getMACAddress());
jsutton 14:1f961d19f3cf 114 LOG("Gateway: %s\n", eth.getGateway());
jsutton 14:1f961d19f3cf 115 LOG("Network Mask: %s\n", eth.getNetworkMask());
jsutton 14:1f961d19f3cf 116 LOG("Server Hostname: %s\n", hostname);
jsutton 14:1f961d19f3cf 117 LOG("Client ID: %s\n", clientId);
jsutton 14:1f961d19f3cf 118 LOG("=====================================\n");
jsutton 14:1f961d19f3cf 119
jsutton 14:1f961d19f3cf 120 netConnecting = true;
jsutton 14:1f961d19f3cf 121 int rc = ipstack->connect(hostname, IBM_IOT_PORT, connectTimeout);
icraggs 16:2420bfbf5f1c 122 if (rc != 0)
icraggs 16:2420bfbf5f1c 123 {
icraggs 18:94da9de96d54 124 WARN("IP Stack connect returned: %d\n", rc);
samdanbury 6:37b6d0d56190 125 return rc;
jsutton 13:85801e3b83d3 126 }
jsutton 13:85801e3b83d3 127 netConnected = true;
jsutton 14:1f961d19f3cf 128 netConnecting = false;
jsutton 14:1f961d19f3cf 129
samdanbury 6:37b6d0d56190 130 // MQTT Connect
jsutton 14:1f961d19f3cf 131 mqttConnecting = true;
samdanbury 6:37b6d0d56190 132 MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
samdanbury 6:37b6d0d56190 133 data.MQTTVersion = 3;
samdanbury 6:37b6d0d56190 134 data.clientID.cstring = clientId;
samdanbury 6:37b6d0d56190 135
samdanbury 6:37b6d0d56190 136 if (!quickstartMode)
samdanbury 6:37b6d0d56190 137 {
samdanbury 6:37b6d0d56190 138 data.username.cstring = "use-token-auth";
samdanbury 6:37b6d0d56190 139 data.password.cstring = auth_token;
samdanbury 6:37b6d0d56190 140 }
samdanbury 6:37b6d0d56190 141
icraggs 8:80d49dd91542 142 if ((rc = client->connect(data)) == 0)
samdanbury 6:37b6d0d56190 143 {
samdanbury 6:37b6d0d56190 144 connected = true;
strysd 20:d8387eff818d 145 led2 = LED2_ON;
strysd 20:d8387eff818d 146 LOG("Connected\n");
jsutton 13:85801e3b83d3 147 wait(1);
samdanbury 6:37b6d0d56190 148 }
icraggs 16:2420bfbf5f1c 149 else
icraggs 16:2420bfbf5f1c 150 WARN("MQTT connect returned %d\n", rc);
strysd 20:d8387eff818d 151 led2 = LED2_OFF;
icraggs 16:2420bfbf5f1c 152 if (rc >= 0)
icraggs 16:2420bfbf5f1c 153 connack_rc = rc;
jsutton 14:1f961d19f3cf 154 mqttConnecting = false;
samdanbury 6:37b6d0d56190 155 return rc;
samdanbury 6:37b6d0d56190 156 }
samdanbury 6:37b6d0d56190 157
samdanbury 6:37b6d0d56190 158
samdanbury 6:37b6d0d56190 159 int getConnTimeout(int attemptNumber)
samdanbury 6:37b6d0d56190 160 { // First 10 attempts try within 3 seconds, next 10 attempts retry after every 1 minute
samdanbury 6:37b6d0d56190 161 // after 20 attempts, retry every 10 minutes
samdanbury 6:37b6d0d56190 162 return (attemptNumber < 10) ? 3 : (attemptNumber < 20) ? 60 : 600;
samdanbury 6:37b6d0d56190 163 }
samdanbury 6:37b6d0d56190 164
samdanbury 6:37b6d0d56190 165
samdanbury 6:37b6d0d56190 166 void attemptConnect(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
samdanbury 6:37b6d0d56190 167 {
samdanbury 6:37b6d0d56190 168 connected = false;
icraggs 16:2420bfbf5f1c 169
icraggs 8:80d49dd91542 170 // make sure a cable is connected before starting to connect
icraggs 16:2420bfbf5f1c 171 while (!linkStatus())
icraggs 16:2420bfbf5f1c 172 {
icraggs 8:80d49dd91542 173 wait(1.0f);
icraggs 8:80d49dd91542 174 WARN("Ethernet link not present. Check cable connection\n");
icraggs 8:80d49dd91542 175 }
samdanbury 6:37b6d0d56190 176
icraggs 16:2420bfbf5f1c 177 while (connect(client, ipstack) != MQTT_CONNECTION_ACCEPTED)
samdanbury 6:37b6d0d56190 178 {
icraggs 16:2420bfbf5f1c 179 if (connack_rc == MQTT_NOT_AUTHORIZED || connack_rc == MQTT_BAD_USERNAME_OR_PASSWORD)
icraggs 16:2420bfbf5f1c 180 return; // don't reattempt to connect if credentials are wrong
icraggs 16:2420bfbf5f1c 181
samdanbury 6:37b6d0d56190 182 int timeout = getConnTimeout(++retryAttempt);
samdanbury 6:37b6d0d56190 183 WARN("Retry attempt number %d waiting %d\n", retryAttempt, timeout);
icraggs 8:80d49dd91542 184
icraggs 8:80d49dd91542 185 // if ipstack and client were on the heap we could deconstruct and goto a label where they are constructed
icraggs 8:80d49dd91542 186 // or maybe just add the proper members to do this disconnect and call attemptConnect(...)
icraggs 8:80d49dd91542 187
icraggs 8:80d49dd91542 188 // this works - reset the system when the retry count gets to a threshold
icraggs 8:80d49dd91542 189 if (retryAttempt == 5)
icraggs 8:80d49dd91542 190 NVIC_SystemReset();
icraggs 8:80d49dd91542 191 else
icraggs 8:80d49dd91542 192 wait(timeout);
samdanbury 6:37b6d0d56190 193 }
samdanbury 6:37b6d0d56190 194 }
samdanbury 6:37b6d0d56190 195
samdanbury 6:37b6d0d56190 196 int publish(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
samdanbury 6:37b6d0d56190 197 {
samdanbury 6:37b6d0d56190 198 MQTT::Message message;
samdanbury 6:37b6d0d56190 199 char* pubTopic = "iot-2/evt/status/fmt/json";
samdanbury 6:37b6d0d56190 200
samdanbury 6:37b6d0d56190 201 char buf[250];
samdanbury 6:37b6d0d56190 202 sprintf(buf,
strysd 20:d8387eff818d 203 "{\"d\":{\"temp\":%d,\"humidity\":%d}}", dht.readTemperature(), dht.readHumidity());
samdanbury 6:37b6d0d56190 204 message.qos = MQTT::QOS0;
samdanbury 6:37b6d0d56190 205 message.retained = false;
samdanbury 6:37b6d0d56190 206 message.dup = false;
samdanbury 6:37b6d0d56190 207 message.payload = (void*)buf;
samdanbury 6:37b6d0d56190 208 message.payloadlen = strlen(buf);
samdanbury 6:37b6d0d56190 209
samdanbury 6:37b6d0d56190 210 LOG("Publishing %s\n", buf);
icraggs 8:80d49dd91542 211 return client->publish(pubTopic, message);
samdanbury 6:37b6d0d56190 212 }
samdanbury 6:37b6d0d56190 213
samdanbury 6:37b6d0d56190 214
samdanbury 6:37b6d0d56190 215 char* getMac(EthernetInterface& eth, char* buf, int buflen) // Obtain MAC address
samdanbury 6:37b6d0d56190 216 {
samdanbury 6:37b6d0d56190 217 strncpy(buf, eth.getMACAddress(), buflen);
samdanbury 6:37b6d0d56190 218
samdanbury 6:37b6d0d56190 219 char* pos; // Remove colons from mac address
samdanbury 6:37b6d0d56190 220 while ((pos = strchr(buf, ':')) != NULL)
samdanbury 6:37b6d0d56190 221 memmove(pos, pos + 1, strlen(pos) + 1);
samdanbury 6:37b6d0d56190 222 return buf;
samdanbury 6:37b6d0d56190 223 }
chris 12:8b480eb8a496 224
samdanbury 6:37b6d0d56190 225
samdanbury 6:37b6d0d56190 226 void messageArrived(MQTT::MessageData& md)
samdanbury 6:37b6d0d56190 227 {
samdanbury 6:37b6d0d56190 228 MQTT::Message &message = md.message;
samdanbury 6:37b6d0d56190 229 char topic[md.topicName.lenstring.len + 1];
samdanbury 6:37b6d0d56190 230
samdanbury 6:37b6d0d56190 231 sprintf(topic, "%.*s", md.topicName.lenstring.len, md.topicName.lenstring.data);
samdanbury 6:37b6d0d56190 232
samdanbury 6:37b6d0d56190 233 LOG("Message arrived on topic %s: %.*s\n", topic, message.payloadlen, message.payload);
samdanbury 6:37b6d0d56190 234
samdanbury 6:37b6d0d56190 235 // Command topic: iot-2/cmd/blink/fmt/json - cmd is the string between cmd/ and /fmt/
samdanbury 6:37b6d0d56190 236 char* start = strstr(topic, "/cmd/") + 5;
samdanbury 6:37b6d0d56190 237 int len = strstr(topic, "/fmt/") - start;
strysd 20:d8387eff818d 238
strysd 20:d8387eff818d 239 //Sample for blink command.
strysd 20:d8387eff818d 240 /*
samdanbury 6:37b6d0d56190 241 if (memcmp(start, "blink", len) == 0)
samdanbury 6:37b6d0d56190 242 {
samdanbury 6:37b6d0d56190 243 char payload[message.payloadlen + 1];
samdanbury 6:37b6d0d56190 244 sprintf(payload, "%.*s", message.payloadlen, (char*)message.payload);
samdanbury 6:37b6d0d56190 245
samdanbury 6:37b6d0d56190 246 char* pos = strchr(payload, '}');
samdanbury 6:37b6d0d56190 247 if (pos != NULL)
samdanbury 6:37b6d0d56190 248 {
samdanbury 6:37b6d0d56190 249 *pos = '\0';
samdanbury 6:37b6d0d56190 250 if ((pos = strchr(payload, ':')) != NULL)
samdanbury 6:37b6d0d56190 251 {
samdanbury 6:37b6d0d56190 252 int blink_rate = atoi(pos + 1);
samdanbury 6:37b6d0d56190 253 blink_interval = (blink_rate <= 0) ? 0 : (blink_rate > 50 ? 1 : 50/blink_rate);
samdanbury 6:37b6d0d56190 254 }
samdanbury 6:37b6d0d56190 255 }
samdanbury 6:37b6d0d56190 256 }
samdanbury 6:37b6d0d56190 257 else
samdanbury 6:37b6d0d56190 258 WARN("Unsupported command: %.*s\n", len, start);
strysd 20:d8387eff818d 259 */
strysd 20:d8387eff818d 260
samdanbury 6:37b6d0d56190 261 }
samdanbury 6:37b6d0d56190 262
samdanbury 6:37b6d0d56190 263
samdanbury 6:37b6d0d56190 264 int main()
strysd 20:d8387eff818d 265 {
icraggs 8:80d49dd91542 266 quickstartMode = (strcmp(org, "quickstart") == 0);
icraggs 8:80d49dd91542 267
strysd 20:d8387eff818d 268 led2 = LED2_OFF;
samdanbury 6:37b6d0d56190 269
strysd 20:d8387eff818d 270 LOG("Connecting\n");
jsutton 13:85801e3b83d3 271
jsutton 14:1f961d19f3cf 272 LOG("***** IBM IoT Client Ethernet Example *****\n");
samdanbury 6:37b6d0d56190 273 MQTTEthernet ipstack;
jsutton 14:1f961d19f3cf 274 ethernetInitialising = false;
samdanbury 6:37b6d0d56190 275 MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE> client(ipstack);
icraggs 18:94da9de96d54 276 LOG("Ethernet Initialized\n");
jsutton 13:85801e3b83d3 277
samdanbury 6:37b6d0d56190 278 if (quickstartMode)
icraggs 16:2420bfbf5f1c 279 getMac(ipstack.getEth(), id, sizeof(id));
icraggs 16:2420bfbf5f1c 280
icraggs 16:2420bfbf5f1c 281 attemptConnect(&client, &ipstack);
icraggs 16:2420bfbf5f1c 282
icraggs 16:2420bfbf5f1c 283 if (connack_rc == MQTT_NOT_AUTHORIZED || connack_rc == MQTT_BAD_USERNAME_OR_PASSWORD)
samdanbury 6:37b6d0d56190 284 {
strysd 20:d8387eff818d 285
icraggs 16:2420bfbf5f1c 286 while (true)
strysd 20:d8387eff818d 287 wait(1); // Permanent failures - don't retry
samdanbury 6:37b6d0d56190 288 }
icraggs 16:2420bfbf5f1c 289
samdanbury 6:37b6d0d56190 290 if (!quickstartMode)
samdanbury 6:37b6d0d56190 291 {
samdanbury 6:37b6d0d56190 292 int rc = 0;
samdanbury 6:37b6d0d56190 293 if ((rc = client.subscribe("iot-2/cmd/+/fmt/json", MQTT::QOS1, messageArrived)) != 0)
samdanbury 6:37b6d0d56190 294 WARN("rc from MQTT subscribe is %d\n", rc);
samdanbury 6:37b6d0d56190 295 }
samdanbury 6:37b6d0d56190 296
samdanbury 6:37b6d0d56190 297 int count = 0;
strysd 20:d8387eff818d 298 int state = 0;
samdanbury 6:37b6d0d56190 299 while (true)
samdanbury 6:37b6d0d56190 300 {
strysd 20:d8387eff818d 301 if (++count == 600)
strysd 20:d8387eff818d 302 { // Publish a message every 6 seconds = 600 * 10ms by yield
strysd 20:d8387eff818d 303
strysd 20:d8387eff818d 304 state = dht.readData();
strysd 20:d8387eff818d 305
strysd 20:d8387eff818d 306 if (state != DHT11::OK) {
strysd 20:d8387eff818d 307 LOG("DHT11 Error: %d\n", state);
strysd 20:d8387eff818d 308 LOG("{\"d\":{\"temp\":%d,\"humidity\":%d}}", dht.readTemperature(), dht.readHumidity());
strysd 20:d8387eff818d 309 } else {
strysd 20:d8387eff818d 310 if (publish(&client, &ipstack) != 0) {
strysd 20:d8387eff818d 311 attemptConnect(&client, &ipstack); // if we have lost the connection
strysd 20:d8387eff818d 312 }
strysd 20:d8387eff818d 313 }
samdanbury 6:37b6d0d56190 314 count = 0;
strysd 20:d8387eff818d 315 led2 = !led2;
samdanbury 6:37b6d0d56190 316 }
samdanbury 6:37b6d0d56190 317
strysd 20:d8387eff818d 318 client.yield(10); // allow the MQTT client to receive messages within 10 msec.
samdanbury 6:37b6d0d56190 319 }
strysd 20:d8387eff818d 320 }