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@15:09458079f4bb, 2015-07-27 (annotated)

Committer:
jsutton
Date:
Mon Jul 27 09:03:30 2015 +0000
Revision:
15:09458079f4bb
Parent:
14:1f961d19f3cf
Child:
16:2420bfbf5f1c
Fixing comment

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 12:8b480eb8a496 33 #define __APP_SW_REVISION__ "11"
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
mazgch 11:7a6df9a2dcdc 47 #if defined(TARGET_UBLOX_C027)
mazgch 11:7a6df9a2dcdc 48 #warning "Compiling for mbed C027"
mazgch 11:7a6df9a2dcdc 49 #include "C027.h"
mazgch 11:7a6df9a2dcdc 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"
samdanbury 6:37b6d0d56190 56 #endif
samdanbury 6:37b6d0d56190 57
jsutton 14:1f961d19f3cf 58
icraggs 8:80d49dd91542 59 bool quickstartMode = true;
samdanbury 6:37b6d0d56190 60 char org[11] = ORG;
samdanbury 6:37b6d0d56190 61 char type[30] = TYPE;
samdanbury 6:37b6d0d56190 62 char id[30] = ID; // mac without colons
samdanbury 6:37b6d0d56190 63 char auth_token[30] = AUTH_TOKEN; // Auth_token is only used in non-quickstart mode
samdanbury 6:37b6d0d56190 64
samdanbury 6:37b6d0d56190 65 bool connected = false;
jsutton 14:1f961d19f3cf 66 bool mqttConnecting = false;
jsutton 14:1f961d19f3cf 67 bool netConnected = false;
jsutton 14:1f961d19f3cf 68 bool netConnecting = false;
jsutton 14:1f961d19f3cf 69 bool ethernetInitialising = true;
jsutton 14:1f961d19f3cf 70 int retryAttempt = 0;
jsutton 14:1f961d19f3cf 71 int menuItem = 0;
jsutton 14:1f961d19f3cf 72
samdanbury 6:37b6d0d56190 73 char* joystickPos = "CENTRE";
samdanbury 6:37b6d0d56190 74 int blink_interval = 0;
samdanbury 6:37b6d0d56190 75
jsutton 13:85801e3b83d3 76 char* ip_addr = "";
jsutton 13:85801e3b83d3 77 char* gateway_addr = "";
jsutton 14:1f961d19f3cf 78 char* host_addr = "";
jsutton 14:1f961d19f3cf 79 int connectTimeout = 1000;
jsutton 14:1f961d19f3cf 80
jsutton 14:1f961d19f3cf 81 // If we wanted to manually set the MAC address,
jsutton 14:1f961d19f3cf 82 // this is how to do it. In this example, we take
jsutton 14:1f961d19f3cf 83 // the original Mbed Set MAC address and combine it
jsutton 14:1f961d19f3cf 84 // with a prefix of our choosing.
jsutton 14:1f961d19f3cf 85 /*
jsutton 14:1f961d19f3cf 86 extern "C" void $Super$$mbed_mac_address(char *s);
jsutton 14:1f961d19f3cf 87 extern "C" void $Sub$$mbed_mac_address(char *s)
jsutton 14:1f961d19f3cf 88 {
jsutton 15:09458079f4bb 89 char originalMAC[6] = "";
jsutton 15:09458079f4bb 90 $Super$$mbed_mac_address(originalMAC);
jsutton 14:1f961d19f3cf 91
jsutton 14:1f961d19f3cf 92 char mac[6];
jsutton 14:1f961d19f3cf 93 mac[0] = 0x00;
jsutton 14:1f961d19f3cf 94 mac[1] = 0x08;
jsutton 14:1f961d19f3cf 95 mac[2] = 0xdc;
jsutton 15:09458079f4bb 96 mac[3] = originalMAC[3];
jsutton 15:09458079f4bb 97 mac[4] = originalMAC[4];
jsutton 15:09458079f4bb 98 mac[5] = originalMAC[5];
jsutton 14:1f961d19f3cf 99 memcpy(s, mac, 6);
jsutton 14:1f961d19f3cf 100 }
jsutton 14:1f961d19f3cf 101 */
jsutton 13:85801e3b83d3 102
samdanbury 6:37b6d0d56190 103
samdanbury 6:37b6d0d56190 104 void off()
samdanbury 6:37b6d0d56190 105 {
samdanbury 6:37b6d0d56190 106 r = g = b = 1.0; // 1 is off, 0 is full brightness
samdanbury 6:37b6d0d56190 107 }
samdanbury 6:37b6d0d56190 108
samdanbury 6:37b6d0d56190 109 void red()
samdanbury 6:37b6d0d56190 110 {
samdanbury 6:37b6d0d56190 111 r = 0.7; g = 1.0; b = 1.0; // 1 is off, 0 is full brightness
samdanbury 6:37b6d0d56190 112 }
samdanbury 6:37b6d0d56190 113
samdanbury 6:37b6d0d56190 114 void yellow()
samdanbury 6:37b6d0d56190 115 {
samdanbury 6:37b6d0d56190 116 r = 0.7; g = 0.7; b = 1.0; // 1 is off, 0 is full brightness
samdanbury 6:37b6d0d56190 117 }
samdanbury 6:37b6d0d56190 118
samdanbury 6:37b6d0d56190 119 void green()
samdanbury 6:37b6d0d56190 120 {
samdanbury 6:37b6d0d56190 121 r = 1.0; g = 0.7; b = 1.0; // 1 is off, 0 is full brightness
samdanbury 6:37b6d0d56190 122 }
samdanbury 6:37b6d0d56190 123
samdanbury 6:37b6d0d56190 124
samdanbury 6:37b6d0d56190 125 void flashing_yellow(void const *args)
samdanbury 6:37b6d0d56190 126 {
samdanbury 6:37b6d0d56190 127 bool on = false;
samdanbury 6:37b6d0d56190 128 while (!connected) // flashing yellow only while connecting
samdanbury 6:37b6d0d56190 129 {
samdanbury 6:37b6d0d56190 130 on = !on;
samdanbury 6:37b6d0d56190 131 if (on)
samdanbury 6:37b6d0d56190 132 yellow();
samdanbury 6:37b6d0d56190 133 else
samdanbury 6:37b6d0d56190 134 off();
samdanbury 6:37b6d0d56190 135 wait(0.5);
samdanbury 6:37b6d0d56190 136 }
samdanbury 6:37b6d0d56190 137 }
samdanbury 6:37b6d0d56190 138
samdanbury 6:37b6d0d56190 139
samdanbury 6:37b6d0d56190 140 void flashing_red(void const *args) // to be used when the connection is lost
samdanbury 6:37b6d0d56190 141 {
samdanbury 6:37b6d0d56190 142 bool on = false;
samdanbury 6:37b6d0d56190 143 while (!connected)
samdanbury 6:37b6d0d56190 144 {
samdanbury 6:37b6d0d56190 145 on = !on;
samdanbury 6:37b6d0d56190 146 if (on)
samdanbury 6:37b6d0d56190 147 red();
samdanbury 6:37b6d0d56190 148 else
samdanbury 6:37b6d0d56190 149 off();
samdanbury 6:37b6d0d56190 150 wait(2.0);
samdanbury 6:37b6d0d56190 151 }
samdanbury 6:37b6d0d56190 152 }
samdanbury 6:37b6d0d56190 153
samdanbury 6:37b6d0d56190 154
jsutton 13:85801e3b83d3 155
jsutton 13:85801e3b83d3 156
samdanbury 6:37b6d0d56190 157 void printMenu(int menuItem)
samdanbury 6:37b6d0d56190 158 {
samdanbury 6:37b6d0d56190 159 lcd.cls();
samdanbury 6:37b6d0d56190 160 lcd.locate(0,0);
samdanbury 6:37b6d0d56190 161 switch (menuItem)
samdanbury 6:37b6d0d56190 162 {
samdanbury 6:37b6d0d56190 163 case 0:
samdanbury 6:37b6d0d56190 164 lcd.printf("IBM IoT Cloud");
samdanbury 6:37b6d0d56190 165 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 166 lcd.printf("Scroll with joystick");
samdanbury 6:37b6d0d56190 167 break;
samdanbury 6:37b6d0d56190 168 case 1:
samdanbury 6:37b6d0d56190 169 lcd.printf("Go to:");
samdanbury 6:37b6d0d56190 170 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 171 lcd.printf("http://ibm.biz/iotqstart");
samdanbury 6:37b6d0d56190 172 break;
samdanbury 6:37b6d0d56190 173 case 2:
samdanbury 6:37b6d0d56190 174 lcd.printf("Device Identity:");
samdanbury 6:37b6d0d56190 175 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 176 lcd.printf("%s", id);
samdanbury 6:37b6d0d56190 177 break;
samdanbury 6:37b6d0d56190 178 case 3:
jsutton 13:85801e3b83d3 179 lcd.printf("MQTT Status:");
samdanbury 6:37b6d0d56190 180 lcd.locate(0,16);
jsutton 14:1f961d19f3cf 181 if(mqttConnecting){
jsutton 14:1f961d19f3cf 182 lcd.printf("Connecting... %d/5", retryAttempt);
jsutton 14:1f961d19f3cf 183 } else {
jsutton 14:1f961d19f3cf 184 lcd.printf(connected ? "Connected" : "Disconnected");
jsutton 14:1f961d19f3cf 185 }
samdanbury 6:37b6d0d56190 186 break;
chris 10:0b5e0dfee08e 187 case 4:
jsutton 14:1f961d19f3cf 188 lcd.printf("Ethernet State:");
jsutton 14:1f961d19f3cf 189 lcd.locate(0,16);
jsutton 14:1f961d19f3cf 190 lcd.printf(ethernetInitialising ? "Initialising..." : "Initialised");
jsutton 14:1f961d19f3cf 191 break;
jsutton 14:1f961d19f3cf 192 case 5:
jsutton 13:85801e3b83d3 193 lcd.printf("Socket State:");
jsutton 13:85801e3b83d3 194 lcd.locate(0,16);
jsutton 14:1f961d19f3cf 195 if(netConnecting){
jsutton 14:1f961d19f3cf 196 lcd.printf("Connecting... %d/5", retryAttempt);
jsutton 14:1f961d19f3cf 197 } else {
jsutton 14:1f961d19f3cf 198 lcd.printf(netConnected ? "Connected" : "Disconnected");
jsutton 14:1f961d19f3cf 199 }
jsutton 13:85801e3b83d3 200 break;
jsutton 14:1f961d19f3cf 201 case 6:
jsutton 13:85801e3b83d3 202 lcd.printf("IP Address:");
jsutton 13:85801e3b83d3 203 lcd.locate(0,16);
jsutton 13:85801e3b83d3 204 lcd.printf("%s", ip_addr);
jsutton 13:85801e3b83d3 205 break;
jsutton 14:1f961d19f3cf 206 case 7:
jsutton 13:85801e3b83d3 207 lcd.printf("Gateway:");
jsutton 13:85801e3b83d3 208 lcd.locate(0,16);
jsutton 13:85801e3b83d3 209 lcd.printf("%s",gateway_addr);
jsutton 13:85801e3b83d3 210 break;
jsutton 14:1f961d19f3cf 211 case 8:
chris 10:0b5e0dfee08e 212 lcd.printf("App version:");
chris 10:0b5e0dfee08e 213 lcd.locate(0,16);
chris 10:0b5e0dfee08e 214 lcd.printf("%s",__APP_SW_REVISION__);
chris 10:0b5e0dfee08e 215 break;
jsutton 14:1f961d19f3cf 216 case 9:
jsutton 14:1f961d19f3cf 217 lcd.printf("Current Timeout:");
jsutton 14:1f961d19f3cf 218 lcd.locate(0,16);
jsutton 14:1f961d19f3cf 219 lcd.printf("%d ms",connectTimeout);
jsutton 14:1f961d19f3cf 220 break;
samdanbury 6:37b6d0d56190 221 }
samdanbury 6:37b6d0d56190 222 }
samdanbury 6:37b6d0d56190 223
samdanbury 6:37b6d0d56190 224
samdanbury 6:37b6d0d56190 225 void setMenu()
samdanbury 6:37b6d0d56190 226 {
jsutton 14:1f961d19f3cf 227
samdanbury 6:37b6d0d56190 228 if (Down)
samdanbury 6:37b6d0d56190 229 {
samdanbury 6:37b6d0d56190 230 joystickPos = "DOWN";
jsutton 14:1f961d19f3cf 231 if (menuItem >= 0 && menuItem < 9)
samdanbury 6:37b6d0d56190 232 printMenu(++menuItem);
samdanbury 6:37b6d0d56190 233 }
samdanbury 6:37b6d0d56190 234 else if (Left)
samdanbury 6:37b6d0d56190 235 joystickPos = "LEFT";
samdanbury 6:37b6d0d56190 236 else if (Click)
samdanbury 6:37b6d0d56190 237 joystickPos = "CLICK";
samdanbury 6:37b6d0d56190 238 else if (Up)
samdanbury 6:37b6d0d56190 239 {
samdanbury 6:37b6d0d56190 240 joystickPos = "UP";
jsutton 14:1f961d19f3cf 241 if (menuItem <= 9 && menuItem > 0)
samdanbury 6:37b6d0d56190 242 printMenu(--menuItem);
samdanbury 6:37b6d0d56190 243 }
samdanbury 6:37b6d0d56190 244 else if (Right)
samdanbury 6:37b6d0d56190 245 joystickPos = "RIGHT";
samdanbury 6:37b6d0d56190 246 else
samdanbury 6:37b6d0d56190 247 joystickPos = "CENTRE";
samdanbury 6:37b6d0d56190 248 }
samdanbury 6:37b6d0d56190 249
jsutton 13:85801e3b83d3 250 void menu_loop(void const *args)
jsutton 13:85801e3b83d3 251 {
jsutton 14:1f961d19f3cf 252 int count = 0;
jsutton 13:85801e3b83d3 253 while(true){
jsutton 13:85801e3b83d3 254 setMenu();
jsutton 14:1f961d19f3cf 255 if(++count % 10 == 0)
jsutton 14:1f961d19f3cf 256 {
jsutton 14:1f961d19f3cf 257 printMenu(menuItem);
jsutton 14:1f961d19f3cf 258 }
jsutton 14:1f961d19f3cf 259 Thread::wait(100);
jsutton 13:85801e3b83d3 260 }
jsutton 14:1f961d19f3cf 261
jsutton 13:85801e3b83d3 262 }
jsutton 13:85801e3b83d3 263
samdanbury 6:37b6d0d56190 264
samdanbury 6:37b6d0d56190 265 /**
samdanbury 6:37b6d0d56190 266 * Display a message on the LCD screen prefixed with IBM IoT Cloud
samdanbury 6:37b6d0d56190 267 */
samdanbury 6:37b6d0d56190 268 void displayMessage(char* message)
samdanbury 6:37b6d0d56190 269 {
samdanbury 6:37b6d0d56190 270 lcd.cls();
samdanbury 6:37b6d0d56190 271 lcd.locate(0,0);
samdanbury 6:37b6d0d56190 272 lcd.printf("IBM IoT Cloud");
samdanbury 6:37b6d0d56190 273 lcd.locate(0,16);
samdanbury 6:37b6d0d56190 274 lcd.printf(message);
samdanbury 6:37b6d0d56190 275 }
samdanbury 6:37b6d0d56190 276
samdanbury 6:37b6d0d56190 277
samdanbury 6:37b6d0d56190 278 int connect(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
samdanbury 6:37b6d0d56190 279 {
samdanbury 6:37b6d0d56190 280 const char* iot_ibm = ".messaging.internetofthings.ibmcloud.com";
samdanbury 6:37b6d0d56190 281
samdanbury 6:37b6d0d56190 282 char hostname[strlen(org) + strlen(iot_ibm) + 1];
samdanbury 6:37b6d0d56190 283 sprintf(hostname, "%s%s", org, iot_ibm);
jsutton 13:85801e3b83d3 284 EthernetInterface& eth = ipstack->getEth();
jsutton 13:85801e3b83d3 285 ip_addr = eth.getIPAddress();
jsutton 13:85801e3b83d3 286 gateway_addr = eth.getGateway();
jsutton 14:1f961d19f3cf 287
jsutton 14:1f961d19f3cf 288 // Construct clientId - d:org:type:id
jsutton 14:1f961d19f3cf 289 char clientId[strlen(org) + strlen(type) + strlen(id) + 5];
jsutton 14:1f961d19f3cf 290 sprintf(clientId, "d:%s:%s:%s", org, type, id);
jsutton 14:1f961d19f3cf 291
jsutton 14:1f961d19f3cf 292 /* Network debug statements */
jsutton 14:1f961d19f3cf 293 LOG("=====================================\n");
jsutton 14:1f961d19f3cf 294 LOG("Connecting Ethernet.\n");
jsutton 14:1f961d19f3cf 295 LOG("IP ADDRESS: %s\n", eth.getIPAddress());
jsutton 14:1f961d19f3cf 296 LOG("MAC ADDRESS: %s\n", eth.getMACAddress());
jsutton 14:1f961d19f3cf 297 LOG("Gateway: %s\n", eth.getGateway());
jsutton 14:1f961d19f3cf 298 LOG("Network Mask: %s\n", eth.getNetworkMask());
jsutton 14:1f961d19f3cf 299 LOG("Server Hostname: %s\n", hostname);
jsutton 14:1f961d19f3cf 300 LOG("Client ID: %s\n", clientId);
jsutton 14:1f961d19f3cf 301 LOG("=====================================\n");
jsutton 14:1f961d19f3cf 302
jsutton 14:1f961d19f3cf 303 netConnecting = true;
jsutton 14:1f961d19f3cf 304 int rc = ipstack->connect(hostname, IBM_IOT_PORT, connectTimeout);
jsutton 13:85801e3b83d3 305 if (rc != 0){
jsutton 13:85801e3b83d3 306 WARN("IP Stack returned: %d\n", rc);
samdanbury 6:37b6d0d56190 307 return rc;
jsutton 13:85801e3b83d3 308 }
jsutton 13:85801e3b83d3 309 netConnected = true;
jsutton 14:1f961d19f3cf 310 netConnecting = false;
jsutton 13:85801e3b83d3 311
jsutton 14:1f961d19f3cf 312
samdanbury 6:37b6d0d56190 313 // MQTT Connect
jsutton 14:1f961d19f3cf 314 mqttConnecting = true;
samdanbury 6:37b6d0d56190 315 MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
samdanbury 6:37b6d0d56190 316 data.MQTTVersion = 3;
samdanbury 6:37b6d0d56190 317 data.clientID.cstring = clientId;
samdanbury 6:37b6d0d56190 318
samdanbury 6:37b6d0d56190 319 if (!quickstartMode)
samdanbury 6:37b6d0d56190 320 {
samdanbury 6:37b6d0d56190 321 data.username.cstring = "use-token-auth";
samdanbury 6:37b6d0d56190 322 data.password.cstring = auth_token;
samdanbury 6:37b6d0d56190 323 }
samdanbury 6:37b6d0d56190 324
icraggs 8:80d49dd91542 325 if ((rc = client->connect(data)) == 0)
samdanbury 6:37b6d0d56190 326 {
samdanbury 6:37b6d0d56190 327 connected = true;
samdanbury 6:37b6d0d56190 328 green();
samdanbury 6:37b6d0d56190 329 displayMessage("Connected");
jsutton 13:85801e3b83d3 330 wait(1);
samdanbury 6:37b6d0d56190 331 displayMessage("Scroll with joystick");
jsutton 13:85801e3b83d3 332
samdanbury 6:37b6d0d56190 333 }
jsutton 14:1f961d19f3cf 334 mqttConnecting = false;
samdanbury 6:37b6d0d56190 335 return rc;
samdanbury 6:37b6d0d56190 336 }
samdanbury 6:37b6d0d56190 337
samdanbury 6:37b6d0d56190 338
samdanbury 6:37b6d0d56190 339 int getConnTimeout(int attemptNumber)
samdanbury 6:37b6d0d56190 340 { // First 10 attempts try within 3 seconds, next 10 attempts retry after every 1 minute
samdanbury 6:37b6d0d56190 341 // after 20 attempts, retry every 10 minutes
samdanbury 6:37b6d0d56190 342 return (attemptNumber < 10) ? 3 : (attemptNumber < 20) ? 60 : 600;
samdanbury 6:37b6d0d56190 343 }
samdanbury 6:37b6d0d56190 344
samdanbury 6:37b6d0d56190 345
samdanbury 6:37b6d0d56190 346 void attemptConnect(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
samdanbury 6:37b6d0d56190 347 {
jsutton 14:1f961d19f3cf 348
samdanbury 6:37b6d0d56190 349 connected = false;
icraggs 8:80d49dd91542 350
icraggs 8:80d49dd91542 351 // make sure a cable is connected before starting to connect
icraggs 8:80d49dd91542 352 while (!linkStatus()) {
icraggs 8:80d49dd91542 353 wait(1.0f);
icraggs 8:80d49dd91542 354 WARN("Ethernet link not present. Check cable connection\n");
icraggs 8:80d49dd91542 355 }
samdanbury 6:37b6d0d56190 356
samdanbury 6:37b6d0d56190 357 while (connect(client, ipstack) != 0)
samdanbury 6:37b6d0d56190 358 {
samdanbury 6:37b6d0d56190 359 Thread red_thread(flashing_red);
chris 12:8b480eb8a496 360
samdanbury 6:37b6d0d56190 361 int timeout = getConnTimeout(++retryAttempt);
samdanbury 6:37b6d0d56190 362 WARN("Retry attempt number %d waiting %d\n", retryAttempt, timeout);
icraggs 8:80d49dd91542 363
icraggs 8:80d49dd91542 364 // if ipstack and client were on the heap we could deconstruct and goto a label where they are constructed
icraggs 8:80d49dd91542 365 // or maybe just add the proper members to do this disconnect and call attemptConnect(...)
icraggs 8:80d49dd91542 366
icraggs 8:80d49dd91542 367 // this works - reset the system when the retry count gets to a threshold
icraggs 8:80d49dd91542 368 if (retryAttempt == 5)
icraggs 8:80d49dd91542 369 NVIC_SystemReset();
icraggs 8:80d49dd91542 370 else
icraggs 8:80d49dd91542 371 wait(timeout);
samdanbury 6:37b6d0d56190 372 }
samdanbury 6:37b6d0d56190 373 }
samdanbury 6:37b6d0d56190 374
samdanbury 6:37b6d0d56190 375
samdanbury 6:37b6d0d56190 376 int publish(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
samdanbury 6:37b6d0d56190 377 {
samdanbury 6:37b6d0d56190 378 MQTT::Message message;
samdanbury 6:37b6d0d56190 379 char* pubTopic = "iot-2/evt/status/fmt/json";
samdanbury 6:37b6d0d56190 380
samdanbury 6:37b6d0d56190 381 char buf[250];
samdanbury 6:37b6d0d56190 382 sprintf(buf,
samdanbury 6:37b6d0d56190 383 "{\"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 384 MMA.x(), MMA.y(), MMA.z(), sensor.temp(), joystickPos, ain1.read(), ain2.read());
samdanbury 6:37b6d0d56190 385 message.qos = MQTT::QOS0;
samdanbury 6:37b6d0d56190 386 message.retained = false;
samdanbury 6:37b6d0d56190 387 message.dup = false;
samdanbury 6:37b6d0d56190 388 message.payload = (void*)buf;
samdanbury 6:37b6d0d56190 389 message.payloadlen = strlen(buf);
samdanbury 6:37b6d0d56190 390
samdanbury 6:37b6d0d56190 391 LOG("Publishing %s\n", buf);
icraggs 8:80d49dd91542 392 return client->publish(pubTopic, message);
samdanbury 6:37b6d0d56190 393 }
samdanbury 6:37b6d0d56190 394
samdanbury 6:37b6d0d56190 395
chris 12:8b480eb8a496 396
samdanbury 6:37b6d0d56190 397 char* getMac(EthernetInterface& eth, char* buf, int buflen) // Obtain MAC address
samdanbury 6:37b6d0d56190 398 {
samdanbury 6:37b6d0d56190 399 strncpy(buf, eth.getMACAddress(), buflen);
samdanbury 6:37b6d0d56190 400
samdanbury 6:37b6d0d56190 401 char* pos; // Remove colons from mac address
samdanbury 6:37b6d0d56190 402 while ((pos = strchr(buf, ':')) != NULL)
samdanbury 6:37b6d0d56190 403 memmove(pos, pos + 1, strlen(pos) + 1);
samdanbury 6:37b6d0d56190 404 return buf;
samdanbury 6:37b6d0d56190 405 }
chris 12:8b480eb8a496 406
samdanbury 6:37b6d0d56190 407
samdanbury 6:37b6d0d56190 408
samdanbury 6:37b6d0d56190 409 void messageArrived(MQTT::MessageData& md)
samdanbury 6:37b6d0d56190 410 {
samdanbury 6:37b6d0d56190 411 MQTT::Message &message = md.message;
samdanbury 6:37b6d0d56190 412 char topic[md.topicName.lenstring.len + 1];
samdanbury 6:37b6d0d56190 413
samdanbury 6:37b6d0d56190 414 sprintf(topic, "%.*s", md.topicName.lenstring.len, md.topicName.lenstring.data);
samdanbury 6:37b6d0d56190 415
samdanbury 6:37b6d0d56190 416 LOG("Message arrived on topic %s: %.*s\n", topic, message.payloadlen, message.payload);
samdanbury 6:37b6d0d56190 417
samdanbury 6:37b6d0d56190 418 // Command topic: iot-2/cmd/blink/fmt/json - cmd is the string between cmd/ and /fmt/
samdanbury 6:37b6d0d56190 419 char* start = strstr(topic, "/cmd/") + 5;
samdanbury 6:37b6d0d56190 420 int len = strstr(topic, "/fmt/") - start;
samdanbury 6:37b6d0d56190 421
samdanbury 6:37b6d0d56190 422 if (memcmp(start, "blink", len) == 0)
samdanbury 6:37b6d0d56190 423 {
samdanbury 6:37b6d0d56190 424 char payload[message.payloadlen + 1];
samdanbury 6:37b6d0d56190 425 sprintf(payload, "%.*s", message.payloadlen, (char*)message.payload);
samdanbury 6:37b6d0d56190 426
samdanbury 6:37b6d0d56190 427 char* pos = strchr(payload, '}');
samdanbury 6:37b6d0d56190 428 if (pos != NULL)
samdanbury 6:37b6d0d56190 429 {
samdanbury 6:37b6d0d56190 430 *pos = '\0';
samdanbury 6:37b6d0d56190 431 if ((pos = strchr(payload, ':')) != NULL)
samdanbury 6:37b6d0d56190 432 {
samdanbury 6:37b6d0d56190 433 int blink_rate = atoi(pos + 1);
samdanbury 6:37b6d0d56190 434 blink_interval = (blink_rate <= 0) ? 0 : (blink_rate > 50 ? 1 : 50/blink_rate);
samdanbury 6:37b6d0d56190 435 }
samdanbury 6:37b6d0d56190 436 }
samdanbury 6:37b6d0d56190 437 }
samdanbury 6:37b6d0d56190 438 else
samdanbury 6:37b6d0d56190 439 WARN("Unsupported command: %.*s\n", len, start);
samdanbury 6:37b6d0d56190 440 }
samdanbury 6:37b6d0d56190 441
samdanbury 6:37b6d0d56190 442
samdanbury 6:37b6d0d56190 443 int main()
samdanbury 6:37b6d0d56190 444 {
icraggs 8:80d49dd91542 445 quickstartMode = (strcmp(org, "quickstart") == 0);
icraggs 8:80d49dd91542 446
samdanbury 6:37b6d0d56190 447 lcd.set_font((unsigned char*) Arial12x12); // Set a nice font for the LCD screen
samdanbury 6:37b6d0d56190 448
samdanbury 6:37b6d0d56190 449 led2 = LED2_OFF; // K64F: turn off the main board LED
samdanbury 6:37b6d0d56190 450
samdanbury 6:37b6d0d56190 451 displayMessage("Connecting");
jsutton 13:85801e3b83d3 452 Thread yellow_thread(flashing_yellow);
jsutton 13:85801e3b83d3 453 Thread menu_thread(menu_loop);
jsutton 13:85801e3b83d3 454
jsutton 14:1f961d19f3cf 455 LOG("***** IBM IoT Client Ethernet Example *****\n");
samdanbury 6:37b6d0d56190 456 MQTTEthernet ipstack;
jsutton 14:1f961d19f3cf 457 ethernetInitialising = false;
samdanbury 6:37b6d0d56190 458 MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE> client(ipstack);
jsutton 14:1f961d19f3cf 459 LOG("Ethernet Initialised.\n");
samdanbury 6:37b6d0d56190 460
jsutton 13:85801e3b83d3 461
samdanbury 6:37b6d0d56190 462 if (quickstartMode)
samdanbury 6:37b6d0d56190 463 {
samdanbury 6:37b6d0d56190 464 getMac(ipstack.getEth(), id, sizeof(id));
samdanbury 6:37b6d0d56190 465 }
samdanbury 6:37b6d0d56190 466 attemptConnect(&client, &ipstack);
samdanbury 6:37b6d0d56190 467 if (!quickstartMode)
samdanbury 6:37b6d0d56190 468 {
samdanbury 6:37b6d0d56190 469 int rc = 0;
samdanbury 6:37b6d0d56190 470 if ((rc = client.subscribe("iot-2/cmd/+/fmt/json", MQTT::QOS1, messageArrived)) != 0)
samdanbury 6:37b6d0d56190 471 WARN("rc from MQTT subscribe is %d\n", rc);
samdanbury 6:37b6d0d56190 472 }
samdanbury 6:37b6d0d56190 473
samdanbury 6:37b6d0d56190 474 blink_interval = 0;
samdanbury 6:37b6d0d56190 475 int count = 0;
samdanbury 6:37b6d0d56190 476 while (true)
samdanbury 6:37b6d0d56190 477 {
samdanbury 6:37b6d0d56190 478 if (++count == 100)
samdanbury 6:37b6d0d56190 479 { // Publish a message every second
samdanbury 6:37b6d0d56190 480 if (publish(&client, &ipstack) != 0)
samdanbury 6:37b6d0d56190 481 attemptConnect(&client, &ipstack); // if we have lost the connection
samdanbury 6:37b6d0d56190 482 count = 0;
samdanbury 6:37b6d0d56190 483 }
samdanbury 6:37b6d0d56190 484
samdanbury 6:37b6d0d56190 485 if (blink_interval == 0)
samdanbury 6:37b6d0d56190 486 led2 = LED2_OFF;
samdanbury 6:37b6d0d56190 487 else if (count % blink_interval == 0)
samdanbury 6:37b6d0d56190 488 led2 = !led2;
samdanbury 6:37b6d0d56190 489 client.yield(10); // allow the MQTT client to receive messages
samdanbury 6:37b6d0d56190 490 }
samdanbury 6:37b6d0d56190 491 }