FRDM-K64F Code Share / Mbed 2 deprecated HomeAutomation

We can handle lights in differents rooms and the air conditioner with our cellphone. We can also switch between two operation modes (manual and automatic). In automatic mode, garden lights and air conditioner will be activated when necessary.

Dependencies:   mbed

main.cpp

Committer:
mdelloso
Date:
2014-08-06
Revision:
1:21ff089ca074
Parent:
0:bdebfb736149

File content as of revision 1:21ff089ca074:

#include "mbed.h"

Serial blue(D1,D0);     //(TX,DX)
Serial PC(USBTX, USBRX);    // Used to debug
Ticker timer;

//Home lights
DigitalOut ledBedroom(D9);
DigitalOut ledLiving(D10);
DigitalOut ledGarden(D11);

//
DigitalOut fan(D12);    

//Sensors
AnalogIn temp(A0);
AnalogIn light(A1);

float tempRead,lightRead=0; 
int flagBlue,flagTimer=0;   //Interrupts flags
int manual=0;   //to handle the ledGarden and the fan manually

char c;

void timerInterrupt()
{
    flagTimer=1;
}

void blueInterrupt()
{
    c = blue.getc(); //receives the command
    flagBlue=1;
}

int main()
{
    //Bluetooth init
    blue.baud(9600);
    blue.attach(&blueInterrupt);
    //Timer init
    timer.attach(&timerInterrupt, 1.0); //time interval 1 sec
    while (1) {
        if (flagTimer) {
            tempRead = temp.read() * 333.333;   //value in celsius
            lightRead=light.read(); //value between 0 - 1
            if (manual==0) {    //automatic mode
                if (lightRead<0.2)  
                    ledGarden=1;    //The ledGarden turns on at night 
                else
                    ledGarden=0;    //The ledGarden turns off during the day
                if (tempRead>30)    
                    fan=1;  //The fan turns on if it's hot
                else
                    fan=0;
            }
            flagTimer=0;    //clear flag
        } //End flagTimer

        if (flagBlue) {
            switch(c) {
                case 'b':   //bedroom
                    ledBedroom=!ledBedroom;
                    break;
                case 'l':   //living room
                    ledLiving=!ledLiving;
                    break;
                case 'g':   //garden
                    ledGarden = !ledGarden;
                    break;
                case 'f':   //fan
                    fan=!fan;
                    break;
                case 'm':   //to activate manual/automatic mode
                    if(manual)
                        manual=0;   //automatic mode
                    else
                        manual=1;   //manual mode
                    break;
                default:
                    break;
            }
            flagBlue=0;
        }   //End flagBlue

        __wfi(); //waiting for interrupt 
    }
}