IoT Energia source code for IR Sensor obstacle detection using CC3200
#ifndef __CC3200R1M1RGC__
// Do not include SPI for CC3200 LaunchPad
#include <SPI.h>
#endif
#include <WiFi.h>
#include <Wire.h>
#include "Adafruit_TMP006.h"
#include <stdlib.h>
// ThingSpeak Settings
char thingSpeakAddress[] = "api.thingspeak.com";
String writeAPIKey = "HK8345X0Q2JX0L36";
const int updateThingSpeakInterval = 16 * 1000; // Time interval in milliseconds to update ThingSpeak (number of seconds * 1000 = interval)
//buffer for float to string
char buffer[25];
// your network name also called SSID
char ssid[] = "R2C";
// your network password
char password[] = "r2cudt@2021";
// initialize the library instance:
WiFiClient client;
unsigned long lastConnectionTime = 0; // last time you connected to the server, in milliseconds
boolean lastConnected = false; // state of the connection last time through the main loop
const unsigned long postingInterval = 10*1000; //delay between updates to xively.com
int failedCounter = 0;
Adafruit_TMP006 tmp006(0x41); // start with a diferent i2c address!
void setup() {
//Initialize serial and wait for port to open:
Serial.begin(115200);
pinMode(2,INPUT);
pinMode(10,OUTPUT);
pinMode(29,OUTPUT);
// attempt to connect to Wifi network:
Serial.print("Attempting to connect to Network named: ");
// print the network name (SSID);
Serial.println(ssid);
// Connect to WPA/WPA2 network. Change this line if using open or WEP network:
WiFi.begin(ssid, password);
while ( WiFi.status() != WL_CONNECTED) {
// print dots while we wait to connect
Serial.print(".");
delay(300);
}
if (! tmp006.begin()) {
Serial.println("No sensor found");
while (1);
}
Serial.println("\nYou're connected to the network");
Serial.println("Waiting for an ip address");
while (WiFi.localIP() == INADDR_NONE) {
// print dots while we wait for an ip addresss
Serial.print(".");
delay(300);
}
Serial.println("\nIP Address obtained");
printWifiStatus();
}
void loop() {
// if there's incoming data from the net connection.
// send it out the serial port. This is for debugging
// purposes only:
while (client.available()) {
char c = client.read();
Serial.print(c);
}
// if there's no net connection, but there was one last time
// through the loop, then stop the client:
if (!client.connected() && lastConnected) {
Serial.println();
Serial.println("disconnecting.");
client.stop();
}
// if you're not connected, and ten seconds have passed since
// your last connection, then connect again and send data:
if (!client.connected() && (millis() - lastConnectionTime > postingInterval)) {
// read the temp sensor:
// read the temp sensor:
float t =tmp006.readObjTempC();
int ir = analogRead(2);
//no one near the door
if (ir<1000)
{
digitalWrite(10,LOW); //buzzer ff
//turning on ac and heater based on the temperature
if(t<23)
{
digitalWrite(9,LOW);// Ac off
digitalWrite(29,HIGH);// heater on
}
else
{
digitalWrite(9,HIGH);// Ac ON
digitalWrite(29,LOW);// heater OFF
}
}
//checking for person near door
else
{
//some one near the door
digitalWrite(10,HIGH); //buzzer on
//turning on ac and heater based on the temperature
if(t<23)
{
digitalWrite(9,LOW);// fan off
digitalWrite(29,HIGH);// heater on
}
else
{
digitalWrite(9,HIGH);// Ac ON
digitalWrite(29,LOW);// heater OFF
}
}
Serial.print("IR value ");
String sir = dtostrf(ir,3,3,buffer);
Serial.print(sir);
Serial.print("Temp ");
String st= dtostrf(t,3,3,buffer);
Serial.print(st);
//send to server
updateThingSpeak("field1=" + st+"&field2=" + sir);
}
// store the state of the connection for next time through
// the loop:
lastConnected = client.connected();
}
void updateThingSpeak(String tsData)
{
if (client.connect(thingSpeakAddress, 80))
{
client.print("POST /update HTTP/1.1\n");
client.print("Host: api.thingspeak.com\n");
client.print("Connection: close\n");
client.print("X-THINGSPEAKAPIKEY: "+writeAPIKey+"\n");
client.print("Content-Type: application/x-www-form-urlencoded\n");
client.print("Content-Length: ");
client.print(tsData.length());
Serial.println(">>TSDATALength=" + tsData.length());
client.print("\n\n");
client.print(tsData);
Serial.println(">>TSDATA=" + tsData);
lastConnectionTime = millis();
if (client.connected())
{
Serial.println("Connecting to ThingSpeak...");
Serial.println();
failedCounter = 0;
}
else
{
failedCounter++;
Serial.println("Connection to ThingSpeak failed ("+String(failedCounter, DEC)+")");
Serial.println();
}
}
else
{
failedCounter++;
Serial.println("Connection to ThingSpeak Failed ("+String(failedCounter, DEC)+")");
Serial.println();
lastConnectionTime = millis();
}
}
// This method calculates the number of digits in the
// sensor reading. Since each digit of the ASCII decimal
// representation is a byte, the number of digits equals
// the number of bytes:
int getLength(int someValue) {
// there's at least one byte:
int digits = 1;
// continually divide the value by ten,
// adding one to the digit count for each
// time you divide, until you're at 0:
int dividend = someValue / 10;
while (dividend > 0) {
dividend = dividend / 10;
digits++;
}
// return the number of digits:
return digits;
}
void printWifiStatus() {
// print the SSID of the network you're attached to:
Serial.print("SSID: ");
Serial.println(WiFi.SSID());
// print your WiFi shield's IP address:
IPAddress ip = WiFi.localIP();
Serial.print("IP Address: ");
Serial.println(ip);
// print the received signal strength:
long rssi = WiFi.RSSI();
Serial.print("signal strength (RSSI):");
Serial.print(rssi);
Serial.println(" dBm");
}
