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main.cpp
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main.cpp
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/*******************************************************************************
* Copyright (c) 2014, 2015 IBM Corp.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v1.0 which accompany this distribution.
*
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Sam Danbury - initial implementation
* Ian Craggs - refactoring to remove STL and other changes
* Sam Grove - added check for Ethernet cable.
* Chris Styles - Added additional menu screen for software revision
* James Sutton - Mac fix and extra debug
* Ian Craggs - add not authorized messages
*
* To do :
* Add magnetometer sensor output to IoT data stream
*
*******************************************************************************/
#include "LM75B.h"
#include "MMA7660.h"
#include "MQTTClient.h"
#include "PHOTOCONT.h"
#include "MQTTEthernet.h"
#include "C12832.h"
#include "Arial12x12.h"
#include "rtos.h"
// Update this to the next number *before* a commit
#define __APP_SW_REVISION__ "18"
// Configuration values needed to connect to IBM IoT Cloud
#define ORG "3ru070" // For a registered connection, replace with your org
#define ID "photocontroller" // For a registered connection, replace with your id
#define AUTH_TOKEN "k!7TUXREnh_NE5uKfa" // For a registered connection, replace with your auth-token
#define TYPE "ARM" // For a registered connection, replace with your type
// Configuration values needed to connect to IBM IoT Cloud
/*#define ORG "quickstart" // For a registered connection, replace with your org
#define ID "" // For a registered connection, replace with your id
#define AUTH_TOKEN "" // For a registered connection, replace with your auth-token
#define TYPE DEFAULT_TYPE_NAME // For a registered connection, replace with your type*/
#define MQTT_PORT 1883
#define MQTT_TLS_PORT 8883
#define IBM_IOT_PORT MQTT_PORT
#define MQTT_MAX_PACKET_SIZE 500
#if defined(TARGET_UBLOX_C027)
#warning "Compiling for mbed C027"
#include "C027.h"
#elif defined(TARGET_LPC1768)
#warning "Compiling for mbed LPC1768"
#include "LPC1768.h"
#elif defined(TARGET_K64F)
#warning "Compiling for mbed K64F"
#include "K64F.h"
#endif
bool quickstartMode = true;
char org[11] = ORG;
char type[30] = TYPE;
char id[30] = ID; // mac without colons
char auth_token[30] = AUTH_TOKEN; // Auth_token is only used in non-quickstart mode
bool connected = false;
bool mqttConnecting = false;
bool netConnected = false;
bool netConnecting = false;
bool ethernetInitialising = true;
int connack_rc = 0; // MQTT connack return code
int retryAttempt = 0;
int menuItem = 0;
char* joystickPos = "CENTRE";
int blink_interval = 0;
char* ip_addr = "";
char* gateway_addr = "";
char* host_addr = "";
int connectTimeout = 1000;
// If we wanted to manually set the MAC address,
// this is how to do it. In this example, we take
// the original Mbed Set MAC address and combine it
// with a prefix of our choosing.
/*
extern "C" void $Super$$mbed_mac_address(char *s);
extern "C" void $Sub$$mbed_mac_address(char *s)
{
char originalMAC[6] = "";
$Super$$mbed_mac_address(originalMAC);
char mac[6];
mac[0] = 0x00;
mac[1] = 0x08;
mac[2] = 0xdc;
mac[3] = originalMAC[3];
mac[4] = originalMAC[4];
mac[5] = originalMAC[5];
memcpy(s, mac, 6);
}
*/
void off()
{
r = g = b = 1.0; // 1 is off, 0 is full brightness
}
void red()
{
r = 0.7; g = 1.0; b = 1.0; // 1 is off, 0 is full brightness
}
void yellow()
{
r = 0.7; g = 0.7; b = 1.0; // 1 is off, 0 is full brightness
}
void green()
{
r = 1.0; g = 0.7; b = 1.0; // 1 is off, 0 is full brightness
}
void flashing_yellow(void const *args)
{
bool on = false;
while (!connected && connack_rc != MQTT_NOT_AUTHORIZED && connack_rc != MQTT_BAD_USERNAME_OR_PASSWORD) // flashing yellow only while connecting
{
on = !on;
if (on)
yellow();
else
off();
wait(0.5);
}
}
void flashing_red(void const *args) // to be used when the connection is lost
{
bool on = false;
while (!connected)
{
on = !on;
if (on)
red();
else
off();
wait(2.0);
}
}
void printMenu(int menuItem)
{
static char last_line1[30] = "", last_line2[30] = "";
char line1[30] = "", line2[30] = "";
switch (menuItem)
{
case 0:
sprintf(line1, "IBM IoT Cloud");
sprintf(line2, "Scroll with joystick");
break;
case 1:
sprintf(line1, "Go to:");
sprintf(line2, "http://ibm.biz/iotqstart");
break;
case 2:
sprintf(line1, "Device Identity:");
sprintf(line2, "%s", id);
break;
case 3:
sprintf(line1, "MQTT Status:");
if (mqttConnecting)
sprintf(line2, "Connecting... %d/5", retryAttempt);
else
{
if (connected)
sprintf(line2, "Connected");
else
{
switch (connack_rc)
{
case MQTT_CLIENTID_REJECTED:
sprintf(line2, "Clientid rejected");
break;
case MQTT_BAD_USERNAME_OR_PASSWORD:
sprintf(line2, "Invalid username or password");
break;
case MQTT_NOT_AUTHORIZED:
sprintf(line2, "Not authorized");
break;
default:
sprintf(line2, "Disconnected");
}
}
}
break;
case 4:
sprintf(line1, "Ethernet State:");
sprintf(line2, ethernetInitialising ? "Initializing..." : "Initialized");
break;
case 5:
sprintf(line1, "Socket State:");
if (netConnecting)
sprintf(line2, "Connecting... %d/5", retryAttempt);
else
sprintf(line2, netConnected ? "Connected" : "Disconnected");
break;
case 6:
sprintf(line1, "IP Address:");
sprintf(line2, "%s", ip_addr);
break;
case 7:
sprintf(line1, "Gateway:");
sprintf(line2, "%s", gateway_addr);
break;
case 8:
sprintf(line1, "App version:");
sprintf(line2, "%s", __APP_SW_REVISION__);
break;
case 9:
sprintf(line1, "Current Timeout:");
sprintf(line2, "%d ms", connectTimeout);
break;
}
if (strcmp(line1, last_line1) != 0 || strcmp(line2, last_line2) != 0)
{
lcd.cls();
lcd.locate(0, 0);
lcd.printf(line1);
strncpy(last_line1, line1, sizeof(last_line1));
lcd.locate(0,16);
lcd.printf(line2);
strncpy(last_line2, line2, sizeof(last_line2));
}
}
void setMenu()
{
if (Down)
{
joystickPos = "DOWN";
if (menuItem >= 0 && menuItem < 9)
printMenu(++menuItem);
}
else if (Left)
joystickPos = "LEFT";
else if (Click)
joystickPos = "CLICK";
else if (Up)
{
joystickPos = "UP";
if (menuItem <= 9 && menuItem > 0)
printMenu(--menuItem);
}
else if (Right)
joystickPos = "RIGHT";
else
joystickPos = "CENTRE";
}
void menu_loop(void const *args)
{
int count = 0;
while(true)
{
setMenu();
if (++count % 10 == 0)
printMenu(menuItem);
Thread::wait(100);
}
}
/**
* Display a message on the LCD screen prefixed with IBM IoT Cloud
*/
void displayMessage(char* message)
{
lcd.cls();
lcd.locate(0,0);
lcd.printf("IBM IoT Cloud");
lcd.locate(0,16);
lcd.printf(message);
}
int connect(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
{
const char* iot_ibm = ".messaging.internetofthings.ibmcloud.com";
char hostname[strlen(org) + strlen(iot_ibm) + 1];
sprintf(hostname, "%s%s", org, iot_ibm);
EthernetInterface& eth = ipstack->getEth();
ip_addr = eth.getIPAddress();
gateway_addr = eth.getGateway();
// Construct clientId - d:org:type:id
char clientId[strlen(org) + strlen(type) + strlen(id) + 5];
sprintf(clientId, "d:%s:%s:%s", org, type, id);
// Network debug statements
LOG("=====================================\n");
LOG("Connecting Ethernet.\n");
LOG("IP ADDRESS: %s\n", eth.getIPAddress());
LOG("MAC ADDRESS: %s\n", eth.getMACAddress());
LOG("Gateway: %s\n", eth.getGateway());
LOG("Network Mask: %s\n", eth.getNetworkMask());
LOG("Server Hostname: %s\n", hostname);
LOG("Client ID: %s\n", clientId);
LOG("=====================================\n");
netConnecting = true;
int rc = ipstack->connect(hostname, IBM_IOT_PORT, connectTimeout);
if (rc != 0)
{
WARN("IP Stack connect returned: %d\n", rc);
return rc;
}
netConnected = true;
netConnecting = false;
// MQTT Connect
mqttConnecting = true;
MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
data.MQTTVersion = 3;
data.clientID.cstring = clientId;
if (!quickstartMode)
{
data.username.cstring = "use-token-auth";
data.password.cstring = auth_token;
}
if ((rc = client->connect(data)) == 0)
{
connected = true;
green();
displayMessage("Connected");
wait(1);
displayMessage("Scroll with joystick");
}
else
WARN("MQTT connect returned %d\n", rc);
if (rc >= 0)
connack_rc = rc;
mqttConnecting = false;
return rc;
}
int getConnTimeout(int attemptNumber)
{ // First 10 attempts try within 3 seconds, next 10 attempts retry after every 1 minute
// after 20 attempts, retry every 10 minutes
return (attemptNumber < 10) ? 3 : (attemptNumber < 20) ? 60 : 600;
}
void attemptConnect(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
{
connected = false;
// make sure a cable is connected before starting to connect
while (!linkStatus())
{
wait(1.0f);
WARN("Ethernet link not present. Check cable connection\n");
}
while (connect(client, ipstack) != MQTT_CONNECTION_ACCEPTED)
{
if (connack_rc == MQTT_NOT_AUTHORIZED || connack_rc == MQTT_BAD_USERNAME_OR_PASSWORD)
return; // don't reattempt to connect if credentials are wrong
Thread red_thread(flashing_red);
int timeout = getConnTimeout(++retryAttempt);
WARN("Retry attempt number %d waiting %d\n", retryAttempt, timeout);
// if ipstack and client were on the heap we could deconstruct and goto a label where they are constructed
// or maybe just add the proper members to do this disconnect and call attemptConnect(...)
// this works - reset the system when the retry count gets to a threshold
if (retryAttempt == 5)
NVIC_SystemReset();
else
wait(timeout);
}
}
int publish(MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE>* client, MQTTEthernet* ipstack)
{
MQTT::Message message;
char* pubTopic = "iot-2/evt/status/fmt/json";
PHC.getTrame();
char buf[500];
//original one
// "{\"d\":{\"myName\":\"IoT mbed\",\"accelX\":%0.4f,\"accelY\":%0.4f,\"accelZ\":%0.4f,\"temp\":%0.4f,\"joystick\":\"%s\",\"potentiometer1\":%0.4f,\"potentiometer2\":%0.4f}}",
//MMA.x(), MMA.y(), MMA.z(), sensor.temp(), joystickPos, ain1.read(), ain2.read();
//KLM 08/10/2015 "{\"d\":{\"temp\":%0.4f,\"DAC_Value\":%hu,\"State\":%#x,\"Power\":%u,\"Old_Power\":%u,\"wJourTimer\":%hu,\"wNuitTimer\":%hu,\"wCurrentTimer\":%hu,\"Rotary_mode\":%x,\"v_iphoto\":%hx,\"v_vphoto\":%hx,\"v_bat\":%hx,\"bNuit\":%x}}",
// sensor.temp(),PHC.getDAC_Value(),PHC.getState(), PHC.getPower(), PHC.getOld_power(), PHC.getWJourTimer(), PHC.getWNuitTimer(),PHC.getWCurrentTimer(), PHC.getRotary_mode(), PHC.getV_iphoto(), PHC.getV_vphoto(),PHC.getV_bat(), PHC.getBNuit());
//Ben 09/10/2015
sprintf(buf,
"{\"d\":{\"myName\":\"IoT mbed\",\"DAC_Value\":%hu,\"State\":1,\"Power\":%u,\"Old_Power\":%u,\"v_iphoto\":%hu,\"v_vphoto\":%hu,\"v_bat\":%i,\"Rotary_mode\":%x,\"bNuit\":%x,\"wJourTimer\":%hu,\"wNuitTimer\":%hu,\"wCurrentTimer\":%hu,\"Loudness\":%f,\"Light\":%2.2f,\"Motion\":%d}}",
PHC.getDAC_Value(), PHC.getPower(),PHC.getOld_power(),PHC.getV_iphoto(),PHC.getV_vphoto(),PHC.getV_bat(),PHC.getRotary_mode(),PHC.getBNuit(),PHC.getWJourTimer(),PHC.getWNuitTimer(),PHC.getWCurrentTimer(),loudness.read(),light_sensor.read(),motion.read());
//klm 25/10
//sprintf(buf,
//"{\"d\":{\"myName\":\"IoT mbed\",\"DAC_Value\":%hu,\"State\":%x,\"Power\":%u,\"Old_Power\":%u,\"v_iphoto\":%hu,\"v_vphoto\":%hu,\"v_bat\":%i,\"Rotary_mode\":%x,\"bNuit\":%x,\"wJourTimer\":%hu,\"wNuitTimer\":%hu,\"wCurrentTimer\":%hu,\"Loudness\":%f,\"Light\":%2.2f,\"Motion\":%d}}",
//PHC.getDAC_Value(),PHC.getState(),PHC.getPower(),PHC.getOld_power(),PHC.getV_iphoto(),PHC.getV_vphoto(),PHC.getV_bat(),PHC.getRotary_mode(),PHC.getBNuit(),PHC.getWJourTimer(),PHC.getWNuitTimer(),PHC.getWCurrentTimer(),loudness.read(),light_sensor.read(),motion.read());
//,\"DAC_Value\":%hu,\"State\":%#x,\"Power\":%u,\"Old_Power\":%u,\"v_iphoto\":%hx,\"v_vphoto\":%hx,\"v_bat\":%hx,\"Rotary_mode\":%#x,\"bNuit\":%#x,\"wJourTimer\":%hu,\"wNuitTimer\":%hu,\"wCurrentTimer\":%hu
//, PHC.getDAC_Value(),PHC.getState(), PHC.getPower(), PHC.getOld_power(), PHC.getV_iphoto(), PHC.getV_vphoto(),PHC.getV_bat(), PHC.getRotary_mode(), PHC.getBNuit(), PHC.getWJourTimer(), PHC.getWNuitTimer(),PHC.getWCurrentTimer()
message.qos = MQTT::QOS0;
message.retained = false;
message.dup = false;
message.payload = (void*)buf;
message.payloadlen = strlen(buf);
LOG("Publishing %s\n", buf);
return client->publish(pubTopic, message);
}
char* getMac(EthernetInterface& eth, char* buf, int buflen) // Obtain MAC address
{
strncpy(buf, eth.getMACAddress(), buflen);
char* pos; // Remove colons from mac address
while ((pos = strchr(buf, ':')) != NULL)
memmove(pos, pos + 1, strlen(pos) + 1);
return buf;
}
void messageArrived(MQTT::MessageData& md)
{
MQTT::Message &message = md.message;
char topic[md.topicName.lenstring.len + 1];
sprintf(topic, "%.*s", md.topicName.lenstring.len, md.topicName.lenstring.data);
LOG("Message arrived on topic %s: %.*s\n", topic, message.payloadlen, message.payload);
// Command topic: iot-2/cmd/blink/fmt/json - cmd is the string between cmd/ and /fmt/
char* start = strstr(topic, "/cmd/") + 5;
int len = strstr(topic, "/fmt/") - start;
if (memcmp(start, "blink", len) == 0)
{
char payload[message.payloadlen + 1];
sprintf(payload, "%.*s", message.payloadlen, (char*)message.payload);
char* pos = strchr(payload, '}');
if (pos != NULL)
{
*pos = '\0';
if ((pos = strchr(payload, ':')) != NULL)
{
int blink_rate = atoi(pos + 1);
blink_interval = (blink_rate <= 0) ? 0 : (blink_rate > 50 ? 1 : 50/blink_rate);
}
}
}
else
WARN("Unsupported command: %.*s\n", len, start);
}
int main()
{
quickstartMode = (strcmp(org, "quickstart") == 0);
lcd.set_font((unsigned char*) Arial12x12); // Set a nice font for the LCD screen
led2 = LED2_OFF; // K64F: turn off the main board LED
displayMessage("Connecting");
Thread yellow_thread(flashing_yellow);
Thread menu_thread(menu_loop);
LOG("***** IBM IoT Client Ethernet Example *****\n");
MQTTEthernet ipstack;
ethernetInitialising = false;
MQTT::Client<MQTTEthernet, Countdown, MQTT_MAX_PACKET_SIZE> client(ipstack);
LOG("Ethernet Initialized\n");
if (quickstartMode)
getMac(ipstack.getEth(), id, sizeof(id));
attemptConnect(&client, &ipstack);
if (connack_rc == MQTT_NOT_AUTHORIZED || connack_rc == MQTT_BAD_USERNAME_OR_PASSWORD)
{
red();
while (true)
wait(1.0); // Permanent failures - don't retry
}
if (!quickstartMode)
{
int rc = 0;
if ((rc = client.subscribe("iot-2/cmd/+/fmt/json", MQTT::QOS1, messageArrived)) != 0)
WARN("rc from MQTT subscribe is %d\n", rc);
}
blink_interval = 0;
int count = 0;
while (true)
{
if (++count == 100)
{ // Publish a message every second
if (publish(&client, &ipstack) != 0)
attemptConnect(&client, &ipstack); // if we have lost the connection
count = 0;
}
if (blink_interval == 0)
led2 = LED2_OFF;
else if (count % blink_interval == 0)
led2 = !led2;
client.yield(10); // allow the MQTT client to receive messages
}
}