Philippe Bazot / Mbed 2 deprecated DU4SmartCities

Code sample to be used with Bluemix for education purpose

Dependencies:   C12832 EthernetInterface LM75B MMA7660 MQTT mbed-rtos mbed

Fork of IBMIoTClientEthernetExample by IBM Watson IoT

main.cpp@9:58eb378727d9, 2014-10-14 (annotated)

Committer:
icraggs
Date:
Tue Oct 14 15:43:42 2014 +0000
Revision:
9:58eb378727d9
Parent:
8:80d49dd91542
Child:
10:0b5e0dfee08e
Make sure device id is lower case

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samdanbury 6:37b6d0d56190 1 /*******************************************************************************
samdanbury 6:37b6d0d56190 2 * Copyright (c) 2014 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.
samdanbury 6:37b6d0d56190 17 *******************************************************************************/
samdanbury 6:37b6d0d56190 18
samdanbury 6:37b6d0d56190 19 #include "LM75B.h"
samdanbury 6:37b6d0d56190 20 #include "MMA7660.h"
samdanbury 6:37b6d0d56190 21 #include "MQTTClient.h"
samdanbury 6:37b6d0d56190 22 #include "MQTTEthernet.h"
samdanbury 6:37b6d0d56190 23 #include "C12832.h"
samdanbury 6:37b6d0d56190 24 #include "Arial12x12.h"
samdanbury 6:37b6d0d56190 25 #include "rtos.h"
samdanbury 6:37b6d0d56190 26
samdanbury 6:37b6d0d56190 27 // Configuration values needed to connect to IBM IoT Cloud
icraggs 8:80d49dd91542 28 #define ORG "quickstart" // For a registered connection, replace with your org
icraggs 8:80d49dd91542 29 #define ID "" // For a registered connection, replace with your id
icraggs 8:80d49dd91542 30 #define AUTH_TOKEN "" // For a registered connection, replace with your auth-token
icraggs 8:80d49dd91542 31 #define TYPE DEFAULT_TYPE_NAME // For a registered connection, replace with your type
samdanbury 6:37b6d0d56190 32
samdanbury 6:37b6d0d56190 33 #define MQTT_PORT 1883
samdanbury 6:37b6d0d56190 34 #define MQTT_TLS_PORT 8883
samdanbury 6:37b6d0d56190 35 #define IBM_IOT_PORT MQTT_PORT
samdanbury 6:37b6d0d56190 36
samdanbury 6:37b6d0d56190 37 #define MQTT_MAX_PACKET_SIZE 250
samdanbury 6:37b6d0d56190 38
samdanbury 6:37b6d0d56190 39 #if defined(TARGET_LPC1768)
samdanbury 6:37b6d0d56190 40 #warning "Compiling for mbed LPC1768"
samdanbury 6:37b6d0d56190 41 #include "LPC1768.h"
samdanbury 6:37b6d0d56190 42 #elif defined(TARGET_K64F)
samdanbury 6:37b6d0d56190 43 #warning "Compiling for mbed K64F"
samdanbury 6:37b6d0d56190 44 #include "K64F.h"
samdanbury 6:37b6d0d56190 45 #endif
samdanbury 6:37b6d0d56190 46
icraggs 8:80d49dd91542 47 bool quickstartMode = true;
samdanbury 6:37b6d0d56190 48 char org[11] = ORG;
samdanbury 6:37b6d0d56190 49 char type[30] = TYPE;
samdanbury 6:37b6d0d56190 50 char id[30] = ID; // mac without colons
samdanbury 6:37b6d0d56190 51 char auth_token[30] = AUTH_TOKEN; // Auth_token is only used in non-quickstart mode
samdanbury 6:37b6d0d56190 52
samdanbury 6:37b6d0d56190 53 bool connected = false;
samdanbury 6:37b6d0d56190 54 char* joystickPos = "CENTRE";
samdanbury 6:37b6d0d56190 55 int blink_interval = 0;
samdanbury 6:37b6d0d56190 56
samdanbury 6:37b6d0d56190 57
samdanbury 6:37b6d0d56190 58 void off()
samdanbury 6:37b6d0d56190 59 {
samdanbury 6:37b6d0d56190 60 r = g = b = 1.0; // 1 is off, 0 is full brightness
samdanbury 6:37b6d0d56190 61 }
samdanbury 6:37b6d0d56190 62
samdanbury 6:37b6d0d56190 63 void red()
samdanbury 6:37b6d0d56190 64 {
samdanbury 6:37b6d0d56190 65 r = 0.7; g = 1.0; b = 1.0; // 1 is off, 0 is full brightness
samdanbury 6:37b6d0d56190 66 }
samdanbury 6:37b6d0d56190 67
samdanbury 6:37b6d0d56190 68 void yellow()
samdanbury 6:37b6d0d56190 69 {
samdanbury 6:37b6d0d56190 70 r = 0.7; g = 0.7; b = 1.0; // 1 is off, 0 is full brightness
samdanbury 6:37b6d0d56190 71 }
samdanbury 6:37b6d0d56190 72
samdanbury 6:37b6d0d56190 73 void green()
samdanbury 6:37b6d0d56190 74 {
samdanbury 6:37b6d0d56190 75 r = 1.0; g = 0.7; b = 1.0; // 1 is off, 0 is full brightness
samdanbury 6:37b6d0d56190 76 }
samdanbury 6:37b6d0d56190 77
samdanbury 6:37b6d0d56190 78
samdanbury 6:37b6d0d56190 79 void flashing_yellow(void const *args)
samdanbury 6:37b6d0d56190 80 {
samdanbury 6:37b6d0d56190 81 bool on = false;
samdanbury 6:37b6d0d56190 82 while (!connected) // flashing yellow only while connecting
samdanbury 6:37b6d0d56190 83 {
samdanbury 6:37b6d0d56190 84 on = !on;
samdanbury 6:37b6d0d56190 85 if (on)
samdanbury 6:37b6d0d56190 86 yellow();
samdanbury 6:37b6d0d56190 87 else
samdanbury 6:37b6d0d56190 88 off();
samdanbury 6:37b6d0d56190 89 wait(0.5);
samdanbury 6:37b6d0d56190 90 }
samdanbury 6:37b6d0d56190 91 }
samdanbury 6:37b6d0d56190 92
samdanbury 6:37b6d0d56190 93
samdanbury 6:37b6d0d56190 94 void flashing_red(void const *args) // to be used when the connection is lost
samdanbury 6:37b6d0d56190 95 {
samdanbury 6:37b6d0d56190 96 bool on = false;
samdanbury 6:37b6d0d56190 97 while (!connected)
samdanbury 6:37b6d0d56190 98 {
samdanbury 6:37b6d0d56190 99 on = !on;
samdanbury 6:37b6d0d56190 100 if (on)
samdanbury 6:37b6d0d56190 101 red();
samdanbury 6:37b6d0d56190 102 else
samdanbury 6:37b6d0d56190 103 off();
samdanbury 6:37b6d0d56190 104 wait(2.0);
samdanbury 6:37b6d0d56190 105 }
samdanbury 6:37b6d0d56190 106 }
samdanbury 6:37b6d0d56190 107
samdanbury 6:37b6d0d56190 108
samdanbury 6:37b6d0d56190 109 void printMenu(int menuItem)
samdanbury 6:37b6d0d56190 110 {
samdanbury 6:37b6d0d56190 111 lcd.cls();
samdanbury 6:37b6d0d56190 112 lcd.locate(0,0);
samdanbury 6:37b6d0d56190 113 switch (menuItem)
samdanbury 6:37b6d0d56190 114 {
samdanbury 6:37b6d0d56190 115 case 0:
samdanbury 6:37b6d0d56190 116 lcd.printf("IBM IoT Cloud");
samdanbury 6:37b6d0d56190 117 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 118 lcd.printf("Scroll with joystick");
samdanbury 6:37b6d0d56190 119 break;
samdanbury 6:37b6d0d56190 120 case 1:
samdanbury 6:37b6d0d56190 121 lcd.printf("Go to:");
samdanbury 6:37b6d0d56190 122 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 123 lcd.printf("http://ibm.biz/iotqstart");
samdanbury 6:37b6d0d56190 124 break;
samdanbury 6:37b6d0d56190 125 case 2:
samdanbury 6:37b6d0d56190 126 lcd.printf("Device Identity:");
samdanbury 6:37b6d0d56190 127 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 128 lcd.printf("%s", id);
samdanbury 6:37b6d0d56190 129 break;
samdanbury 6:37b6d0d56190 130 case 3:
samdanbury 6:37b6d0d56190 131 lcd.printf("Status:");
samdanbury 6:37b6d0d56190 132 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 133 lcd.printf(connected ? "Connected" : "Disconnected");
samdanbury 6:37b6d0d56190 134 break;
samdanbury 6:37b6d0d56190 135 }
samdanbury 6:37b6d0d56190 136 }
samdanbury 6:37b6d0d56190 137
samdanbury 6:37b6d0d56190 138
samdanbury 6:37b6d0d56190 139 void setMenu()
samdanbury 6:37b6d0d56190 140 {
samdanbury 6:37b6d0d56190 141 static int menuItem = 0;
samdanbury 6:37b6d0d56190 142 if (Down)
samdanbury 6:37b6d0d56190 143 {
samdanbury 6:37b6d0d56190 144 joystickPos = "DOWN";
samdanbury 6:37b6d0d56190 145 if (menuItem >= 0 && menuItem < 3)
samdanbury 6:37b6d0d56190 146 printMenu(++menuItem);
samdanbury 6:37b6d0d56190 147 }
samdanbury 6:37b6d0d56190 148 else if (Left)
samdanbury 6:37b6d0d56190 149 joystickPos = "LEFT";
samdanbury 6:37b6d0d56190 150 else if (Click)
samdanbury 6:37b6d0d56190 151 joystickPos = "CLICK";
samdanbury 6:37b6d0d56190 152 else if (Up)
samdanbury 6:37b6d0d56190 153 {
samdanbury 6:37b6d0d56190 154 joystickPos = "UP";
samdanbury 6:37b6d0d56190 155 if (menuItem <= 3 && menuItem > 0)
samdanbury 6:37b6d0d56190 156 printMenu(--menuItem);
samdanbury 6:37b6d0d56190 157 }
samdanbury 6:37b6d0d56190 158 else if (Right)
samdanbury 6:37b6d0d56190 159 joystickPos = "RIGHT";
samdanbury 6:37b6d0d56190 160 else
samdanbury 6:37b6d0d56190 161 joystickPos = "CENTRE";
samdanbury 6:37b6d0d56190 162 }
samdanbury 6:37b6d0d56190 163
samdanbury 6:37b6d0d56190 164
samdanbury 6:37b6d0d56190 165 /**
samdanbury 6:37b6d0d56190 166 * Display a message on the LCD screen prefixed with IBM IoT Cloud
samdanbury 6:37b6d0d56190 167 */
samdanbury 6:37b6d0d56190 168 void displayMessage(char* message)
samdanbury 6:37b6d0d56190 169 {
samdanbury 6:37b6d0d56190 170 lcd.cls();
samdanbury 6:37b6d0d56190 171 lcd.locate(0,0);
samdanbury 6:37b6d0d56190 172 lcd.printf("IBM IoT Cloud");
samdanbury 6:37b6d0d56190 173 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 174 lcd.printf(message);
samdanbury 6:37b6d0d56190 175 }
samdanbury 6:37b6d0d56190 176
samdanbury 6:37b6d0d56190 177
samdanbury 6:37b6d0d56190 178 int connect(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
samdanbury 6:37b6d0d56190 179 {
samdanbury 6:37b6d0d56190 180 const char* iot_ibm = ".messaging.internetofthings.ibmcloud.com";
samdanbury 6:37b6d0d56190 181
samdanbury 6:37b6d0d56190 182 char hostname[strlen(org) + strlen(iot_ibm) + 1];
samdanbury 6:37b6d0d56190 183 sprintf(hostname, "%s%s", org, iot_ibm);
samdanbury 6:37b6d0d56190 184 int rc = ipstack->connect(hostname, IBM_IOT_PORT);
samdanbury 6:37b6d0d56190 185 if (rc != 0)
samdanbury 6:37b6d0d56190 186 return rc;
samdanbury 6:37b6d0d56190 187
samdanbury 6:37b6d0d56190 188 // Construct clientId - d:org:type:id
samdanbury 6:37b6d0d56190 189 char clientId[strlen(org) + strlen(type) + strlen(id) + 5];
samdanbury 6:37b6d0d56190 190 sprintf(clientId, "d:%s:%s:%s", org, type, id);
samdanbury 6:37b6d0d56190 191 DEBUG("clientid is %s\n", clientId);
samdanbury 6:37b6d0d56190 192
samdanbury 6:37b6d0d56190 193 // MQTT Connect
samdanbury 6:37b6d0d56190 194 MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
samdanbury 6:37b6d0d56190 195 data.MQTTVersion = 3;
samdanbury 6:37b6d0d56190 196 data.clientID.cstring = clientId;
samdanbury 6:37b6d0d56190 197
samdanbury 6:37b6d0d56190 198 if (!quickstartMode)
samdanbury 6:37b6d0d56190 199 {
samdanbury 6:37b6d0d56190 200 data.username.cstring = "use-token-auth";
samdanbury 6:37b6d0d56190 201 data.password.cstring = auth_token;
samdanbury 6:37b6d0d56190 202 }
samdanbury 6:37b6d0d56190 203
icraggs 8:80d49dd91542 204 if ((rc = client->connect(data)) == 0)
samdanbury 6:37b6d0d56190 205 {
samdanbury 6:37b6d0d56190 206 connected = true;
samdanbury 6:37b6d0d56190 207 green();
samdanbury 6:37b6d0d56190 208 displayMessage("Connected");
samdanbury 6:37b6d0d56190 209 wait(2);
samdanbury 6:37b6d0d56190 210 displayMessage("Scroll with joystick");
samdanbury 6:37b6d0d56190 211 }
samdanbury 6:37b6d0d56190 212 return rc;
samdanbury 6:37b6d0d56190 213 }
samdanbury 6:37b6d0d56190 214
samdanbury 6:37b6d0d56190 215
samdanbury 6:37b6d0d56190 216 int getConnTimeout(int attemptNumber)
samdanbury 6:37b6d0d56190 217 { // First 10 attempts try within 3 seconds, next 10 attempts retry after every 1 minute
samdanbury 6:37b6d0d56190 218 // after 20 attempts, retry every 10 minutes
samdanbury 6:37b6d0d56190 219 return (attemptNumber < 10) ? 3 : (attemptNumber < 20) ? 60 : 600;
samdanbury 6:37b6d0d56190 220 }
samdanbury 6:37b6d0d56190 221
samdanbury 6:37b6d0d56190 222
samdanbury 6:37b6d0d56190 223 void attemptConnect(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
samdanbury 6:37b6d0d56190 224 {
samdanbury 6:37b6d0d56190 225 int retryAttempt = 0;
samdanbury 6:37b6d0d56190 226 connected = false;
icraggs 8:80d49dd91542 227
icraggs 8:80d49dd91542 228 // make sure a cable is connected before starting to connect
icraggs 8:80d49dd91542 229 while (!linkStatus()) {
icraggs 8:80d49dd91542 230 wait(1.0f);
icraggs 8:80d49dd91542 231 WARN("Ethernet link not present. Check cable connection\n");
icraggs 8:80d49dd91542 232 }
samdanbury 6:37b6d0d56190 233
samdanbury 6:37b6d0d56190 234 while (connect(client, ipstack) != 0)
samdanbury 6:37b6d0d56190 235 {
samdanbury 6:37b6d0d56190 236 #if defined(TARGET_K64F)
samdanbury 6:37b6d0d56190 237 red();
samdanbury 6:37b6d0d56190 238 #else
samdanbury 6:37b6d0d56190 239 Thread red_thread(flashing_red);
samdanbury 6:37b6d0d56190 240 #endif
samdanbury 6:37b6d0d56190 241 int timeout = getConnTimeout(++retryAttempt);
samdanbury 6:37b6d0d56190 242 WARN("Retry attempt number %d waiting %d\n", retryAttempt, timeout);
icraggs 8:80d49dd91542 243
icraggs 8:80d49dd91542 244 // if ipstack and client were on the heap we could deconstruct and goto a label where they are constructed
icraggs 8:80d49dd91542 245 // or maybe just add the proper members to do this disconnect and call attemptConnect(...)
icraggs 8:80d49dd91542 246
icraggs 8:80d49dd91542 247 // this works - reset the system when the retry count gets to a threshold
icraggs 8:80d49dd91542 248 if (retryAttempt == 5)
icraggs 8:80d49dd91542 249 NVIC_SystemReset();
icraggs 8:80d49dd91542 250 else
icraggs 8:80d49dd91542 251 wait(timeout);
samdanbury 6:37b6d0d56190 252 }
samdanbury 6:37b6d0d56190 253 }
samdanbury 6:37b6d0d56190 254
samdanbury 6:37b6d0d56190 255
samdanbury 6:37b6d0d56190 256 int publish(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
samdanbury 6:37b6d0d56190 257 {
samdanbury 6:37b6d0d56190 258 MQTT::Message message;
samdanbury 6:37b6d0d56190 259 char* pubTopic = "iot-2/evt/status/fmt/json";
samdanbury 6:37b6d0d56190 260
samdanbury 6:37b6d0d56190 261 char buf[250];
samdanbury 6:37b6d0d56190 262 sprintf(buf,
samdanbury 6:37b6d0d56190 263 "{\"d\":{\"myName\":\"IoT mbed\",\"accelX\":%0.4f,\"accelY\":%0.4f,\"accelZ\":%0.4f,\"temp\":%0.4f,\"joystick\":\"%s\",\"potentiometer1\":%0.4f,\"potentiometer2\":%0.4f}}",
samdanbury 6:37b6d0d56190 264 MMA.x(), MMA.y(), MMA.z(), sensor.temp(), joystickPos, ain1.read(), ain2.read());
samdanbury 6:37b6d0d56190 265 message.qos = MQTT::QOS0;
samdanbury 6:37b6d0d56190 266 message.retained = false;
samdanbury 6:37b6d0d56190 267 message.dup = false;
samdanbury 6:37b6d0d56190 268 message.payload = (void*)buf;
samdanbury 6:37b6d0d56190 269 message.payloadlen = strlen(buf);
samdanbury 6:37b6d0d56190 270
samdanbury 6:37b6d0d56190 271 LOG("Publishing %s\n", buf);
icraggs 8:80d49dd91542 272 return client->publish(pubTopic, message);
samdanbury 6:37b6d0d56190 273 }
samdanbury 6:37b6d0d56190 274
samdanbury 6:37b6d0d56190 275
samdanbury 6:37b6d0d56190 276 #if defined(TARGET_K64F)
samdanbury 6:37b6d0d56190 277 int getUUID48(char* buf, int buflen)
samdanbury 6:37b6d0d56190 278 {
samdanbury 6:37b6d0d56190 279 unsigned int UUID_LOC_WORD0 = 0x40048060;
samdanbury 6:37b6d0d56190 280 unsigned int UUID_LOC_WORD1 = 0x4004805C;
samdanbury 6:37b6d0d56190 281
samdanbury 6:37b6d0d56190 282 // Fetch word 0
samdanbury 6:37b6d0d56190 283 uint32_t word0 = *(uint32_t *)UUID_LOC_WORD0;
samdanbury 6:37b6d0d56190 284
samdanbury 6:37b6d0d56190 285 // Fetch word 1
samdanbury 6:37b6d0d56190 286 // we only want bottom 16 bits of word1 (MAC bits 32-47)
samdanbury 6:37b6d0d56190 287 // and bit 9 forced to 1, bit 8 forced to 0
samdanbury 6:37b6d0d56190 288 // Locally administered MAC, reduced conflicts
samdanbury 6:37b6d0d56190 289 // http://en.wikipedia.org/wiki/MAC_address
samdanbury 6:37b6d0d56190 290 uint32_t word1 = *(uint32_t *)UUID_LOC_WORD1;
samdanbury 6:37b6d0d56190 291 word1 |= 0x00000200;
samdanbury 6:37b6d0d56190 292 word1 &= 0x0000FEFF;
samdanbury 6:37b6d0d56190 293
icraggs 9:58eb378727d9 294 int rc = snprintf(buf, buflen, "%4x%08x", word1, word0); // Device id must be in lower case
samdanbury 6:37b6d0d56190 295
samdanbury 6:37b6d0d56190 296 return rc;
samdanbury 6:37b6d0d56190 297 }
samdanbury 6:37b6d0d56190 298 #else
samdanbury 6:37b6d0d56190 299 char* getMac(EthernetInterface& eth, char* buf, int buflen) // Obtain MAC address
samdanbury 6:37b6d0d56190 300 {
samdanbury 6:37b6d0d56190 301 strncpy(buf, eth.getMACAddress(), buflen);
samdanbury 6:37b6d0d56190 302
samdanbury 6:37b6d0d56190 303 char* pos; // Remove colons from mac address
samdanbury 6:37b6d0d56190 304 while ((pos = strchr(buf, ':')) != NULL)
samdanbury 6:37b6d0d56190 305 memmove(pos, pos + 1, strlen(pos) + 1);
samdanbury 6:37b6d0d56190 306 return buf;
samdanbury 6:37b6d0d56190 307 }
samdanbury 6:37b6d0d56190 308 #endif
samdanbury 6:37b6d0d56190 309
samdanbury 6:37b6d0d56190 310
samdanbury 6:37b6d0d56190 311 void messageArrived(MQTT::MessageData& md)
samdanbury 6:37b6d0d56190 312 {
samdanbury 6:37b6d0d56190 313 MQTT::Message &message = md.message;
samdanbury 6:37b6d0d56190 314 char topic[md.topicName.lenstring.len + 1];
samdanbury 6:37b6d0d56190 315
samdanbury 6:37b6d0d56190 316 sprintf(topic, "%.*s", md.topicName.lenstring.len, md.topicName.lenstring.data);
samdanbury 6:37b6d0d56190 317
samdanbury 6:37b6d0d56190 318 LOG("Message arrived on topic %s: %.*s\n", topic, message.payloadlen, message.payload);
samdanbury 6:37b6d0d56190 319
samdanbury 6:37b6d0d56190 320 // Command topic: iot-2/cmd/blink/fmt/json - cmd is the string between cmd/ and /fmt/
samdanbury 6:37b6d0d56190 321 char* start = strstr(topic, "/cmd/") + 5;
samdanbury 6:37b6d0d56190 322 int len = strstr(topic, "/fmt/") - start;
samdanbury 6:37b6d0d56190 323
samdanbury 6:37b6d0d56190 324 if (memcmp(start, "blink", len) == 0)
samdanbury 6:37b6d0d56190 325 {
samdanbury 6:37b6d0d56190 326 char payload[message.payloadlen + 1];
samdanbury 6:37b6d0d56190 327 sprintf(payload, "%.*s", message.payloadlen, (char*)message.payload);
samdanbury 6:37b6d0d56190 328
samdanbury 6:37b6d0d56190 329 char* pos = strchr(payload, '}');
samdanbury 6:37b6d0d56190 330 if (pos != NULL)
samdanbury 6:37b6d0d56190 331 {
samdanbury 6:37b6d0d56190 332 *pos = '\0';
samdanbury 6:37b6d0d56190 333 if ((pos = strchr(payload, ':')) != NULL)
samdanbury 6:37b6d0d56190 334 {
samdanbury 6:37b6d0d56190 335 int blink_rate = atoi(pos + 1);
samdanbury 6:37b6d0d56190 336 blink_interval = (blink_rate <= 0) ? 0 : (blink_rate > 50 ? 1 : 50/blink_rate);
samdanbury 6:37b6d0d56190 337 }
samdanbury 6:37b6d0d56190 338 }
samdanbury 6:37b6d0d56190 339 }
samdanbury 6:37b6d0d56190 340 else
samdanbury 6:37b6d0d56190 341 WARN("Unsupported command: %.*s\n", len, start);
samdanbury 6:37b6d0d56190 342 }
samdanbury 6:37b6d0d56190 343
samdanbury 6:37b6d0d56190 344
samdanbury 6:37b6d0d56190 345 int main()
samdanbury 6:37b6d0d56190 346 {
icraggs 8:80d49dd91542 347 quickstartMode = (strcmp(org, "quickstart") == 0);
icraggs 8:80d49dd91542 348
samdanbury 6:37b6d0d56190 349 lcd.set_font((unsigned char*) Arial12x12); // Set a nice font for the LCD screen
samdanbury 6:37b6d0d56190 350
samdanbury 6:37b6d0d56190 351 led2 = LED2_OFF; // K64F: turn off the main board LED
samdanbury 6:37b6d0d56190 352
samdanbury 6:37b6d0d56190 353 displayMessage("Connecting");
samdanbury 6:37b6d0d56190 354 #if defined(TARGET_K64F)
samdanbury 6:37b6d0d56190 355 yellow(); // Don't flash on the K64F, because starting a thread causes the EthernetInterface init call to hang
samdanbury 6:37b6d0d56190 356 #else
samdanbury 6:37b6d0d56190 357 Thread yellow_thread(flashing_yellow);
samdanbury 6:37b6d0d56190 358 #endif
samdanbury 6:37b6d0d56190 359
samdanbury 6:37b6d0d56190 360 MQTTEthernet ipstack;
samdanbury 6:37b6d0d56190 361 MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE> client(ipstack);
samdanbury 6:37b6d0d56190 362
samdanbury 6:37b6d0d56190 363 if (quickstartMode)
samdanbury 6:37b6d0d56190 364 {
samdanbury 6:37b6d0d56190 365 #if defined(TARGET_K64F)
samdanbury 6:37b6d0d56190 366 getUUID48(id, sizeof(id)); // getMac doesn't work on the K64F
samdanbury 6:37b6d0d56190 367 #else
samdanbury 6:37b6d0d56190 368 getMac(ipstack.getEth(), id, sizeof(id));
samdanbury 6:37b6d0d56190 369 #endif
samdanbury 6:37b6d0d56190 370 }
samdanbury 6:37b6d0d56190 371
samdanbury 6:37b6d0d56190 372 attemptConnect(&client, &ipstack);
samdanbury 6:37b6d0d56190 373
samdanbury 6:37b6d0d56190 374 if (!quickstartMode)
samdanbury 6:37b6d0d56190 375 {
samdanbury 6:37b6d0d56190 376 int rc = 0;
samdanbury 6:37b6d0d56190 377 if ((rc = client.subscribe("iot-2/cmd/+/fmt/json", MQTT::QOS1, messageArrived)) != 0)
samdanbury 6:37b6d0d56190 378 WARN("rc from MQTT subscribe is %d\n", rc);
samdanbury 6:37b6d0d56190 379 }
samdanbury 6:37b6d0d56190 380
samdanbury 6:37b6d0d56190 381 blink_interval = 0;
samdanbury 6:37b6d0d56190 382 int count = 0;
samdanbury 6:37b6d0d56190 383 while (true)
samdanbury 6:37b6d0d56190 384 {
samdanbury 6:37b6d0d56190 385 if (++count == 100)
samdanbury 6:37b6d0d56190 386 { // Publish a message every second
samdanbury 6:37b6d0d56190 387 if (publish(&client, &ipstack) != 0)
samdanbury 6:37b6d0d56190 388 attemptConnect(&client, &ipstack); // if we have lost the connection
samdanbury 6:37b6d0d56190 389 count = 0;
samdanbury 6:37b6d0d56190 390 }
samdanbury 6:37b6d0d56190 391
samdanbury 6:37b6d0d56190 392 if (blink_interval == 0)
samdanbury 6:37b6d0d56190 393 led2 = LED2_OFF;
samdanbury 6:37b6d0d56190 394 else if (count % blink_interval == 0)
samdanbury 6:37b6d0d56190 395 led2 = !led2;
samdanbury 6:37b6d0d56190 396 if (count % 20 == 0)
samdanbury 6:37b6d0d56190 397 setMenu();
samdanbury 6:37b6d0d56190 398 client.yield(10); // allow the MQTT client to receive messages
samdanbury 6:37b6d0d56190 399 }
samdanbury 6:37b6d0d56190 400 }