Toyomasa Watarai / Mbed 2 deprecated IBMIoTClientEthernetExample

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Dependencies:   C12832_fix EthernetInterface LM75B MMA7660 MQTT mbed-rtos mbed

Fork of IBMIoTClientEthernetExample by IBM Watson IoT

main.cpp@13:2234cf0a8127, 2015-03-20 (annotated)

Committer:
MACRUM
Date:
Fri Mar 20 16:03:58 2015 +0000
Revision:
13:2234cf0a8127
Parent:
11:41d0316866bb
Child:
14:1dd53a6d02d2
Add Arch Pro support.

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.
chris 10:0b5e0dfee08e 17 * Chris Styles - Added additional menu screen for software revision
chris 10:0b5e0dfee08e 18 *
chris 10:0b5e0dfee08e 19 * To do :
chris 10:0b5e0dfee08e 20 * Add magnetometer sensor output to IoT data stream
chris 10:0b5e0dfee08e 21 *
samdanbury 6:37b6d0d56190 22 *******************************************************************************/
samdanbury 6:37b6d0d56190 23
samdanbury 6:37b6d0d56190 24 #include "LM75B.h"
samdanbury 6:37b6d0d56190 25 #include "MMA7660.h"
samdanbury 6:37b6d0d56190 26 #include "MQTTClient.h"
samdanbury 6:37b6d0d56190 27 #include "MQTTEthernet.h"
samdanbury 6:37b6d0d56190 28 #include "C12832.h"
samdanbury 6:37b6d0d56190 29 #include "Arial12x12.h"
samdanbury 6:37b6d0d56190 30 #include "rtos.h"
samdanbury 6:37b6d0d56190 31
chris 10:0b5e0dfee08e 32 // Update this to the next number *before* a commit
chris 10:0b5e0dfee08e 33 #define __APP_SW_REVISION__ "10"
chris 10:0b5e0dfee08e 34
samdanbury 6:37b6d0d56190 35 // Configuration values needed to connect to IBM IoT Cloud
icraggs 8:80d49dd91542 36 #define ORG "quickstart" // For a registered connection, replace with your org
icraggs 8:80d49dd91542 37 #define ID "" // For a registered connection, replace with your id
icraggs 8:80d49dd91542 38 #define AUTH_TOKEN "" // For a registered connection, replace with your auth-token
icraggs 8:80d49dd91542 39 #define TYPE DEFAULT_TYPE_NAME // For a registered connection, replace with your type
samdanbury 6:37b6d0d56190 40
samdanbury 6:37b6d0d56190 41 #define MQTT_PORT 1883
samdanbury 6:37b6d0d56190 42 #define MQTT_TLS_PORT 8883
samdanbury 6:37b6d0d56190 43 #define IBM_IOT_PORT MQTT_PORT
samdanbury 6:37b6d0d56190 44
samdanbury 6:37b6d0d56190 45 #define MQTT_MAX_PACKET_SIZE 250
samdanbury 6:37b6d0d56190 46
MACRUM 13:2234cf0a8127 47 #if defined(TARGET_ARCH_PRO)
MACRUM 13:2234cf0a8127 48 #warning "Compiling for mbed ARCH PRO"
MACRUM 13:2234cf0a8127 49 #include "RZA1H.h"
MACRUM 13:2234cf0a8127 50 #elif defined(TARGET_LPC1768)
samdanbury 6:37b6d0d56190 51 #warning "Compiling for mbed LPC1768"
samdanbury 6:37b6d0d56190 52 #include "LPC1768.h"
samdanbury 6:37b6d0d56190 53 #elif defined(TARGET_K64F)
samdanbury 6:37b6d0d56190 54 #warning "Compiling for mbed K64F"
samdanbury 6:37b6d0d56190 55 #include "K64F.h"
MACRUM 11:41d0316866bb 56 #elif defined(TARGET_RZ_A1H)
MACRUM 11:41d0316866bb 57 #warning "Compiling for mbed GR-PEACH"
MACRUM 11:41d0316866bb 58 #include "RZA1H.h"
samdanbury 6:37b6d0d56190 59 #endif
samdanbury 6:37b6d0d56190 60
icraggs 8:80d49dd91542 61 bool quickstartMode = true;
samdanbury 6:37b6d0d56190 62 char org[11] = ORG;
samdanbury 6:37b6d0d56190 63 char type[30] = TYPE;
samdanbury 6:37b6d0d56190 64 char id[30] = ID; // mac without colons
samdanbury 6:37b6d0d56190 65 char auth_token[30] = AUTH_TOKEN; // Auth_token is only used in non-quickstart mode
samdanbury 6:37b6d0d56190 66
samdanbury 6:37b6d0d56190 67 bool connected = false;
samdanbury 6:37b6d0d56190 68 char* joystickPos = "CENTRE";
samdanbury 6:37b6d0d56190 69 int blink_interval = 0;
samdanbury 6:37b6d0d56190 70
samdanbury 6:37b6d0d56190 71
samdanbury 6:37b6d0d56190 72 void off()
samdanbury 6:37b6d0d56190 73 {
samdanbury 6:37b6d0d56190 74 r = g = b = 1.0; // 1 is off, 0 is full brightness
samdanbury 6:37b6d0d56190 75 }
samdanbury 6:37b6d0d56190 76
samdanbury 6:37b6d0d56190 77 void red()
samdanbury 6:37b6d0d56190 78 {
samdanbury 6:37b6d0d56190 79 r = 0.7; g = 1.0; b = 1.0; // 1 is off, 0 is full brightness
samdanbury 6:37b6d0d56190 80 }
samdanbury 6:37b6d0d56190 81
samdanbury 6:37b6d0d56190 82 void yellow()
samdanbury 6:37b6d0d56190 83 {
samdanbury 6:37b6d0d56190 84 r = 0.7; g = 0.7; b = 1.0; // 1 is off, 0 is full brightness
samdanbury 6:37b6d0d56190 85 }
samdanbury 6:37b6d0d56190 86
samdanbury 6:37b6d0d56190 87 void green()
samdanbury 6:37b6d0d56190 88 {
samdanbury 6:37b6d0d56190 89 r = 1.0; g = 0.7; b = 1.0; // 1 is off, 0 is full brightness
samdanbury 6:37b6d0d56190 90 }
samdanbury 6:37b6d0d56190 91
samdanbury 6:37b6d0d56190 92
samdanbury 6:37b6d0d56190 93 void flashing_yellow(void const *args)
samdanbury 6:37b6d0d56190 94 {
samdanbury 6:37b6d0d56190 95 bool on = false;
samdanbury 6:37b6d0d56190 96 while (!connected) // flashing yellow only while connecting
samdanbury 6:37b6d0d56190 97 {
samdanbury 6:37b6d0d56190 98 on = !on;
samdanbury 6:37b6d0d56190 99 if (on)
samdanbury 6:37b6d0d56190 100 yellow();
samdanbury 6:37b6d0d56190 101 else
samdanbury 6:37b6d0d56190 102 off();
samdanbury 6:37b6d0d56190 103 wait(0.5);
samdanbury 6:37b6d0d56190 104 }
samdanbury 6:37b6d0d56190 105 }
samdanbury 6:37b6d0d56190 106
samdanbury 6:37b6d0d56190 107
samdanbury 6:37b6d0d56190 108 void flashing_red(void const *args) // to be used when the connection is lost
samdanbury 6:37b6d0d56190 109 {
samdanbury 6:37b6d0d56190 110 bool on = false;
samdanbury 6:37b6d0d56190 111 while (!connected)
samdanbury 6:37b6d0d56190 112 {
samdanbury 6:37b6d0d56190 113 on = !on;
samdanbury 6:37b6d0d56190 114 if (on)
samdanbury 6:37b6d0d56190 115 red();
samdanbury 6:37b6d0d56190 116 else
samdanbury 6:37b6d0d56190 117 off();
samdanbury 6:37b6d0d56190 118 wait(2.0);
samdanbury 6:37b6d0d56190 119 }
samdanbury 6:37b6d0d56190 120 }
samdanbury 6:37b6d0d56190 121
samdanbury 6:37b6d0d56190 122
samdanbury 6:37b6d0d56190 123 void printMenu(int menuItem)
samdanbury 6:37b6d0d56190 124 {
samdanbury 6:37b6d0d56190 125 lcd.cls();
samdanbury 6:37b6d0d56190 126 lcd.locate(0,0);
samdanbury 6:37b6d0d56190 127 switch (menuItem)
samdanbury 6:37b6d0d56190 128 {
samdanbury 6:37b6d0d56190 129 case 0:
samdanbury 6:37b6d0d56190 130 lcd.printf("IBM IoT Cloud");
samdanbury 6:37b6d0d56190 131 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 132 lcd.printf("Scroll with joystick");
samdanbury 6:37b6d0d56190 133 break;
samdanbury 6:37b6d0d56190 134 case 1:
samdanbury 6:37b6d0d56190 135 lcd.printf("Go to:");
samdanbury 6:37b6d0d56190 136 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 137 lcd.printf("http://ibm.biz/iotqstart");
samdanbury 6:37b6d0d56190 138 break;
samdanbury 6:37b6d0d56190 139 case 2:
samdanbury 6:37b6d0d56190 140 lcd.printf("Device Identity:");
samdanbury 6:37b6d0d56190 141 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 142 lcd.printf("%s", id);
samdanbury 6:37b6d0d56190 143 break;
samdanbury 6:37b6d0d56190 144 case 3:
samdanbury 6:37b6d0d56190 145 lcd.printf("Status:");
samdanbury 6:37b6d0d56190 146 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 147 lcd.printf(connected ? "Connected" : "Disconnected");
samdanbury 6:37b6d0d56190 148 break;
chris 10:0b5e0dfee08e 149 case 4:
chris 10:0b5e0dfee08e 150 lcd.printf("App version:");
chris 10:0b5e0dfee08e 151 lcd.locate(0,16);
chris 10:0b5e0dfee08e 152 lcd.printf("%s",__APP_SW_REVISION__);
chris 10:0b5e0dfee08e 153 break;
samdanbury 6:37b6d0d56190 154 }
samdanbury 6:37b6d0d56190 155 }
samdanbury 6:37b6d0d56190 156
samdanbury 6:37b6d0d56190 157
samdanbury 6:37b6d0d56190 158 void setMenu()
samdanbury 6:37b6d0d56190 159 {
samdanbury 6:37b6d0d56190 160 static int menuItem = 0;
samdanbury 6:37b6d0d56190 161 if (Down)
samdanbury 6:37b6d0d56190 162 {
samdanbury 6:37b6d0d56190 163 joystickPos = "DOWN";
chris 10:0b5e0dfee08e 164 if (menuItem >= 0 && menuItem < 4)
samdanbury 6:37b6d0d56190 165 printMenu(++menuItem);
samdanbury 6:37b6d0d56190 166 }
samdanbury 6:37b6d0d56190 167 else if (Left)
samdanbury 6:37b6d0d56190 168 joystickPos = "LEFT";
samdanbury 6:37b6d0d56190 169 else if (Click)
samdanbury 6:37b6d0d56190 170 joystickPos = "CLICK";
samdanbury 6:37b6d0d56190 171 else if (Up)
samdanbury 6:37b6d0d56190 172 {
samdanbury 6:37b6d0d56190 173 joystickPos = "UP";
chris 10:0b5e0dfee08e 174 if (menuItem <= 4 && menuItem > 0)
samdanbury 6:37b6d0d56190 175 printMenu(--menuItem);
samdanbury 6:37b6d0d56190 176 }
samdanbury 6:37b6d0d56190 177 else if (Right)
samdanbury 6:37b6d0d56190 178 joystickPos = "RIGHT";
samdanbury 6:37b6d0d56190 179 else
samdanbury 6:37b6d0d56190 180 joystickPos = "CENTRE";
samdanbury 6:37b6d0d56190 181 }
samdanbury 6:37b6d0d56190 182
samdanbury 6:37b6d0d56190 183
samdanbury 6:37b6d0d56190 184 /**
samdanbury 6:37b6d0d56190 185 * Display a message on the LCD screen prefixed with IBM IoT Cloud
samdanbury 6:37b6d0d56190 186 */
samdanbury 6:37b6d0d56190 187 void displayMessage(char* message)
samdanbury 6:37b6d0d56190 188 {
samdanbury 6:37b6d0d56190 189 lcd.cls();
samdanbury 6:37b6d0d56190 190 lcd.locate(0,0);
samdanbury 6:37b6d0d56190 191 lcd.printf("IBM IoT Cloud");
samdanbury 6:37b6d0d56190 192 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 193 lcd.printf(message);
samdanbury 6:37b6d0d56190 194 }
samdanbury 6:37b6d0d56190 195
samdanbury 6:37b6d0d56190 196
samdanbury 6:37b6d0d56190 197 int connect(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
samdanbury 6:37b6d0d56190 198 {
samdanbury 6:37b6d0d56190 199 const char* iot_ibm = ".messaging.internetofthings.ibmcloud.com";
samdanbury 6:37b6d0d56190 200
samdanbury 6:37b6d0d56190 201 char hostname[strlen(org) + strlen(iot_ibm) + 1];
samdanbury 6:37b6d0d56190 202 sprintf(hostname, "%s%s", org, iot_ibm);
samdanbury 6:37b6d0d56190 203 int rc = ipstack->connect(hostname, IBM_IOT_PORT);
samdanbury 6:37b6d0d56190 204 if (rc != 0)
samdanbury 6:37b6d0d56190 205 return rc;
samdanbury 6:37b6d0d56190 206
samdanbury 6:37b6d0d56190 207 // Construct clientId - d:org:type:id
samdanbury 6:37b6d0d56190 208 char clientId[strlen(org) + strlen(type) + strlen(id) + 5];
samdanbury 6:37b6d0d56190 209 sprintf(clientId, "d:%s:%s:%s", org, type, id);
samdanbury 6:37b6d0d56190 210 DEBUG("clientid is %s\n", clientId);
samdanbury 6:37b6d0d56190 211
samdanbury 6:37b6d0d56190 212 // MQTT Connect
samdanbury 6:37b6d0d56190 213 MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
samdanbury 6:37b6d0d56190 214 data.MQTTVersion = 3;
samdanbury 6:37b6d0d56190 215 data.clientID.cstring = clientId;
samdanbury 6:37b6d0d56190 216
samdanbury 6:37b6d0d56190 217 if (!quickstartMode)
samdanbury 6:37b6d0d56190 218 {
samdanbury 6:37b6d0d56190 219 data.username.cstring = "use-token-auth";
samdanbury 6:37b6d0d56190 220 data.password.cstring = auth_token;
samdanbury 6:37b6d0d56190 221 }
samdanbury 6:37b6d0d56190 222
icraggs 8:80d49dd91542 223 if ((rc = client->connect(data)) == 0)
samdanbury 6:37b6d0d56190 224 {
samdanbury 6:37b6d0d56190 225 connected = true;
samdanbury 6:37b6d0d56190 226 green();
samdanbury 6:37b6d0d56190 227 displayMessage("Connected");
samdanbury 6:37b6d0d56190 228 wait(2);
samdanbury 6:37b6d0d56190 229 displayMessage("Scroll with joystick");
samdanbury 6:37b6d0d56190 230 }
samdanbury 6:37b6d0d56190 231 return rc;
samdanbury 6:37b6d0d56190 232 }
samdanbury 6:37b6d0d56190 233
samdanbury 6:37b6d0d56190 234
samdanbury 6:37b6d0d56190 235 int getConnTimeout(int attemptNumber)
samdanbury 6:37b6d0d56190 236 { // First 10 attempts try within 3 seconds, next 10 attempts retry after every 1 minute
samdanbury 6:37b6d0d56190 237 // after 20 attempts, retry every 10 minutes
samdanbury 6:37b6d0d56190 238 return (attemptNumber < 10) ? 3 : (attemptNumber < 20) ? 60 : 600;
samdanbury 6:37b6d0d56190 239 }
samdanbury 6:37b6d0d56190 240
samdanbury 6:37b6d0d56190 241
samdanbury 6:37b6d0d56190 242 void attemptConnect(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
samdanbury 6:37b6d0d56190 243 {
samdanbury 6:37b6d0d56190 244 int retryAttempt = 0;
samdanbury 6:37b6d0d56190 245 connected = false;
icraggs 8:80d49dd91542 246
icraggs 8:80d49dd91542 247 // make sure a cable is connected before starting to connect
icraggs 8:80d49dd91542 248 while (!linkStatus()) {
icraggs 8:80d49dd91542 249 wait(1.0f);
icraggs 8:80d49dd91542 250 WARN("Ethernet link not present. Check cable connection\n");
icraggs 8:80d49dd91542 251 }
samdanbury 6:37b6d0d56190 252
samdanbury 6:37b6d0d56190 253 while (connect(client, ipstack) != 0)
samdanbury 6:37b6d0d56190 254 {
samdanbury 6:37b6d0d56190 255 #if defined(TARGET_K64F)
samdanbury 6:37b6d0d56190 256 red();
samdanbury 6:37b6d0d56190 257 #else
samdanbury 6:37b6d0d56190 258 Thread red_thread(flashing_red);
samdanbury 6:37b6d0d56190 259 #endif
samdanbury 6:37b6d0d56190 260 int timeout = getConnTimeout(++retryAttempt);
samdanbury 6:37b6d0d56190 261 WARN("Retry attempt number %d waiting %d\n", retryAttempt, timeout);
icraggs 8:80d49dd91542 262
icraggs 8:80d49dd91542 263 // if ipstack and client were on the heap we could deconstruct and goto a label where they are constructed
icraggs 8:80d49dd91542 264 // or maybe just add the proper members to do this disconnect and call attemptConnect(...)
icraggs 8:80d49dd91542 265
icraggs 8:80d49dd91542 266 // this works - reset the system when the retry count gets to a threshold
icraggs 8:80d49dd91542 267 if (retryAttempt == 5)
MACRUM 11:41d0316866bb 268 #if defined(TARGET_RZ_A1H)
MACRUM 11:41d0316866bb 269 mbed_die();
MACRUM 11:41d0316866bb 270 #else
icraggs 8:80d49dd91542 271 NVIC_SystemReset();
MACRUM 11:41d0316866bb 272 #endif
icraggs 8:80d49dd91542 273 else
icraggs 8:80d49dd91542 274 wait(timeout);
samdanbury 6:37b6d0d56190 275 }
samdanbury 6:37b6d0d56190 276 }
samdanbury 6:37b6d0d56190 277
samdanbury 6:37b6d0d56190 278
samdanbury 6:37b6d0d56190 279 int publish(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
samdanbury 6:37b6d0d56190 280 {
samdanbury 6:37b6d0d56190 281 MQTT::Message message;
samdanbury 6:37b6d0d56190 282 char* pubTopic = "iot-2/evt/status/fmt/json";
samdanbury 6:37b6d0d56190 283
samdanbury 6:37b6d0d56190 284 char buf[250];
samdanbury 6:37b6d0d56190 285 sprintf(buf,
samdanbury 6:37b6d0d56190 286 "{\"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 287 MMA.x(), MMA.y(), MMA.z(), sensor.temp(), joystickPos, ain1.read(), ain2.read());
samdanbury 6:37b6d0d56190 288 message.qos = MQTT::QOS0;
samdanbury 6:37b6d0d56190 289 message.retained = false;
samdanbury 6:37b6d0d56190 290 message.dup = false;
samdanbury 6:37b6d0d56190 291 message.payload = (void*)buf;
samdanbury 6:37b6d0d56190 292 message.payloadlen = strlen(buf);
samdanbury 6:37b6d0d56190 293
samdanbury 6:37b6d0d56190 294 LOG("Publishing %s\n", buf);
icraggs 8:80d49dd91542 295 return client->publish(pubTopic, message);
samdanbury 6:37b6d0d56190 296 }
samdanbury 6:37b6d0d56190 297
samdanbury 6:37b6d0d56190 298
samdanbury 6:37b6d0d56190 299 #if defined(TARGET_K64F)
samdanbury 6:37b6d0d56190 300 int getUUID48(char* buf, int buflen)
samdanbury 6:37b6d0d56190 301 {
samdanbury 6:37b6d0d56190 302 unsigned int UUID_LOC_WORD0 = 0x40048060;
samdanbury 6:37b6d0d56190 303 unsigned int UUID_LOC_WORD1 = 0x4004805C;
samdanbury 6:37b6d0d56190 304
samdanbury 6:37b6d0d56190 305 // Fetch word 0
samdanbury 6:37b6d0d56190 306 uint32_t word0 = *(uint32_t *)UUID_LOC_WORD0;
samdanbury 6:37b6d0d56190 307
samdanbury 6:37b6d0d56190 308 // Fetch word 1
samdanbury 6:37b6d0d56190 309 // we only want bottom 16 bits of word1 (MAC bits 32-47)
samdanbury 6:37b6d0d56190 310 // and bit 9 forced to 1, bit 8 forced to 0
samdanbury 6:37b6d0d56190 311 // Locally administered MAC, reduced conflicts
samdanbury 6:37b6d0d56190 312 // http://en.wikipedia.org/wiki/MAC_address
samdanbury 6:37b6d0d56190 313 uint32_t word1 = *(uint32_t *)UUID_LOC_WORD1;
samdanbury 6:37b6d0d56190 314 word1 |= 0x00000200;
samdanbury 6:37b6d0d56190 315 word1 &= 0x0000FEFF;
samdanbury 6:37b6d0d56190 316
icraggs 9:58eb378727d9 317 int rc = snprintf(buf, buflen, "%4x%08x", word1, word0); // Device id must be in lower case
samdanbury 6:37b6d0d56190 318
samdanbury 6:37b6d0d56190 319 return rc;
samdanbury 6:37b6d0d56190 320 }
samdanbury 6:37b6d0d56190 321 #else
samdanbury 6:37b6d0d56190 322 char* getMac(EthernetInterface& eth, char* buf, int buflen) // Obtain MAC address
samdanbury 6:37b6d0d56190 323 {
samdanbury 6:37b6d0d56190 324 strncpy(buf, eth.getMACAddress(), buflen);
samdanbury 6:37b6d0d56190 325
samdanbury 6:37b6d0d56190 326 char* pos; // Remove colons from mac address
samdanbury 6:37b6d0d56190 327 while ((pos = strchr(buf, ':')) != NULL)
samdanbury 6:37b6d0d56190 328 memmove(pos, pos + 1, strlen(pos) + 1);
samdanbury 6:37b6d0d56190 329 return buf;
samdanbury 6:37b6d0d56190 330 }
samdanbury 6:37b6d0d56190 331 #endif
samdanbury 6:37b6d0d56190 332
samdanbury 6:37b6d0d56190 333
samdanbury 6:37b6d0d56190 334 void messageArrived(MQTT::MessageData& md)
samdanbury 6:37b6d0d56190 335 {
samdanbury 6:37b6d0d56190 336 MQTT::Message &message = md.message;
samdanbury 6:37b6d0d56190 337 char topic[md.topicName.lenstring.len + 1];
samdanbury 6:37b6d0d56190 338
samdanbury 6:37b6d0d56190 339 sprintf(topic, "%.*s", md.topicName.lenstring.len, md.topicName.lenstring.data);
samdanbury 6:37b6d0d56190 340
samdanbury 6:37b6d0d56190 341 LOG("Message arrived on topic %s: %.*s\n", topic, message.payloadlen, message.payload);
samdanbury 6:37b6d0d56190 342
samdanbury 6:37b6d0d56190 343 // Command topic: iot-2/cmd/blink/fmt/json - cmd is the string between cmd/ and /fmt/
samdanbury 6:37b6d0d56190 344 char* start = strstr(topic, "/cmd/") + 5;
samdanbury 6:37b6d0d56190 345 int len = strstr(topic, "/fmt/") - start;
samdanbury 6:37b6d0d56190 346
samdanbury 6:37b6d0d56190 347 if (memcmp(start, "blink", len) == 0)
samdanbury 6:37b6d0d56190 348 {
samdanbury 6:37b6d0d56190 349 char payload[message.payloadlen + 1];
samdanbury 6:37b6d0d56190 350 sprintf(payload, "%.*s", message.payloadlen, (char*)message.payload);
samdanbury 6:37b6d0d56190 351
samdanbury 6:37b6d0d56190 352 char* pos = strchr(payload, '}');
samdanbury 6:37b6d0d56190 353 if (pos != NULL)
samdanbury 6:37b6d0d56190 354 {
samdanbury 6:37b6d0d56190 355 *pos = '\0';
samdanbury 6:37b6d0d56190 356 if ((pos = strchr(payload, ':')) != NULL)
samdanbury 6:37b6d0d56190 357 {
samdanbury 6:37b6d0d56190 358 int blink_rate = atoi(pos + 1);
samdanbury 6:37b6d0d56190 359 blink_interval = (blink_rate <= 0) ? 0 : (blink_rate > 50 ? 1 : 50/blink_rate);
samdanbury 6:37b6d0d56190 360 }
samdanbury 6:37b6d0d56190 361 }
samdanbury 6:37b6d0d56190 362 }
samdanbury 6:37b6d0d56190 363 else
samdanbury 6:37b6d0d56190 364 WARN("Unsupported command: %.*s\n", len, start);
samdanbury 6:37b6d0d56190 365 }
samdanbury 6:37b6d0d56190 366
samdanbury 6:37b6d0d56190 367
samdanbury 6:37b6d0d56190 368 int main()
samdanbury 6:37b6d0d56190 369 {
icraggs 8:80d49dd91542 370 quickstartMode = (strcmp(org, "quickstart") == 0);
icraggs 8:80d49dd91542 371
samdanbury 6:37b6d0d56190 372 lcd.set_font((unsigned char*) Arial12x12); // Set a nice font for the LCD screen
samdanbury 6:37b6d0d56190 373
samdanbury 6:37b6d0d56190 374 led2 = LED2_OFF; // K64F: turn off the main board LED
samdanbury 6:37b6d0d56190 375
samdanbury 6:37b6d0d56190 376 displayMessage("Connecting");
samdanbury 6:37b6d0d56190 377 #if defined(TARGET_K64F)
samdanbury 6:37b6d0d56190 378 yellow(); // Don't flash on the K64F, because starting a thread causes the EthernetInterface init call to hang
samdanbury 6:37b6d0d56190 379 #else
samdanbury 6:37b6d0d56190 380 Thread yellow_thread(flashing_yellow);
samdanbury 6:37b6d0d56190 381 #endif
samdanbury 6:37b6d0d56190 382
samdanbury 6:37b6d0d56190 383 MQTTEthernet ipstack;
samdanbury 6:37b6d0d56190 384 MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE> client(ipstack);
samdanbury 6:37b6d0d56190 385
samdanbury 6:37b6d0d56190 386 if (quickstartMode)
samdanbury 6:37b6d0d56190 387 {
samdanbury 6:37b6d0d56190 388 #if defined(TARGET_K64F)
samdanbury 6:37b6d0d56190 389 getUUID48(id, sizeof(id)); // getMac doesn't work on the K64F
samdanbury 6:37b6d0d56190 390 #else
samdanbury 6:37b6d0d56190 391 getMac(ipstack.getEth(), id, sizeof(id));
samdanbury 6:37b6d0d56190 392 #endif
samdanbury 6:37b6d0d56190 393 }
samdanbury 6:37b6d0d56190 394
samdanbury 6:37b6d0d56190 395 attemptConnect(&client, &ipstack);
samdanbury 6:37b6d0d56190 396
samdanbury 6:37b6d0d56190 397 if (!quickstartMode)
samdanbury 6:37b6d0d56190 398 {
samdanbury 6:37b6d0d56190 399 int rc = 0;
samdanbury 6:37b6d0d56190 400 if ((rc = client.subscribe("iot-2/cmd/+/fmt/json", MQTT::QOS1, messageArrived)) != 0)
samdanbury 6:37b6d0d56190 401 WARN("rc from MQTT subscribe is %d\n", rc);
samdanbury 6:37b6d0d56190 402 }
samdanbury 6:37b6d0d56190 403
samdanbury 6:37b6d0d56190 404 blink_interval = 0;
samdanbury 6:37b6d0d56190 405 int count = 0;
samdanbury 6:37b6d0d56190 406 while (true)
samdanbury 6:37b6d0d56190 407 {
samdanbury 6:37b6d0d56190 408 if (++count == 100)
samdanbury 6:37b6d0d56190 409 { // Publish a message every second
samdanbury 6:37b6d0d56190 410 if (publish(&client, &ipstack) != 0)
samdanbury 6:37b6d0d56190 411 attemptConnect(&client, &ipstack); // if we have lost the connection
samdanbury 6:37b6d0d56190 412 count = 0;
samdanbury 6:37b6d0d56190 413 }
samdanbury 6:37b6d0d56190 414
samdanbury 6:37b6d0d56190 415 if (blink_interval == 0)
samdanbury 6:37b6d0d56190 416 led2 = LED2_OFF;
samdanbury 6:37b6d0d56190 417 else if (count % blink_interval == 0)
samdanbury 6:37b6d0d56190 418 led2 = !led2;
samdanbury 6:37b6d0d56190 419 if (count % 20 == 0)
samdanbury 6:37b6d0d56190 420 setMenu();
samdanbury 6:37b6d0d56190 421 client.yield(10); // allow the MQTT client to receive messages
samdanbury 6:37b6d0d56190 422 }
samdanbury 6:37b6d0d56190 423 }