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sarthakbatragatechsarthakbatragatech
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C++ files added. More meaningful comments needed
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‎first_mbed.cpp

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//Import necessary modules
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#include "mbed.h"
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#include "rtos.h"
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#include "uLCD_4DGL.h"
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#include "MMA8452.h"
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#include "ultrasonic.h"
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//Initializa variables
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Serial pc(USBTX,USBRX);
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Serial blue(p13,p14);
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DigitalOut led4(LED4);
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DigitalOut led3(LED3);
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DigitalOut led2(LED2);
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DigitalOut led1(LED1);
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AnalogIn tmp(p15);
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uLCD_4DGL uLCD(p9, p10, p11);
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MMA8452 acc(p28, p27, 100000);
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PwmOut speaker(p23);
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ultrasonic mu(p6, p7, .1, 1);
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Thread thread1; Thread thread2;
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Thread thread3; Thread thread4;
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Thread thread5; Thread thread6;
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Mutex m; DigitalOut camera_trigger(p18);
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DigitalOut wifi_trigger(p18);
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DigitalIn pb1(p20);
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DigitalIn pb2(p19);
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DigitalIn pb3(p17);
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float tempC, tempF;
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double x, y, z, dist_accel;
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int dist_sonar; int i;
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volatile bool sound = false;
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volatile bool arm = false;
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void temp_thread() {
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while(1) {
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float vin = 5.0 * LM61 / 1024.0;
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tempC = (1.8663 - vin) / 0.01169; tempF = 1.8 * tempC + 32.0;
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tempC = ((tmp * 3.3) * 100 - 50); tempF = 1.8 * tempC + 32.0;
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//mutex lock
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m.lock();
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uLCD.locate(1,1);
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uLCD.printf("%5.2F C %5.2F F \n\r", tempC, tempF);
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m.unlock();
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//Adjusted Thread wait time
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Thread::wait(900);
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}
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}
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//Accelerometer Thread
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void accel_thread() {
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while(1) {
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acc.readXYZGravity(&x,&y,&z);
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m.lock();
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uLCD.locate(0,3);
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uLCD.printf("x:%lf\n",x);
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uLCD.locate(0,4);
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uLCD.printf("y:%lf\n",y);
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uLCD.locate(0,5);
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uLCD.printf("z:%lf\n",z);
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m.unlock();
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dist_accel = (x*x + y*y + z*z)^0.5;
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uLCD.printf("dist:%lf\n", dist_accel);
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Thread::wait(800);
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}
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}
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void dist(int distance) {
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//put code here to execute when the distance has changed
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uLCD.printf("Distance %d mm\r\n", distance);
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//if less than 50mm, alarm activated
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}
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ultrasonic mu(p6, p7, .1, 1, &dist);
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//Sonar Thread
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void sonar_thread() {
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while(1) {
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mu.startUpdates();
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//start measuring the distance --SONAR
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mu.checkDistance();
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m.lock();
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uLCD.locate(0,10);
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dist_sonar = mu.getCurrentDistance();
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uLCD.printf("Distance: %d", dist_sonar);
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wait(0.2); uLCD.printf(" ");
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m.unlock();
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Thread::wait(700);
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}
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}
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//Speaker Thread
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void speaker_thread() {
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while(1) {
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led3 = !led3;
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if(sound) {
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for (i=0; i<10; i=i+2) {
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//--SPEAKER
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speaker.period(1.0/969.0);
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speaker = float(i)/50.0;
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wait(.5);
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speaker.period(1.0/800.0);
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wait(.5);
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}
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}
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Thread::wait(600);
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}
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}
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//Thresholds for Alarm Trigger
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void checker_thread() {
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while(1) {
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if(arm) {
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if(tempC > 27 || x > 0.3 || y < -0.5 || dist_sonar < 50) {
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sound = true;
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camera_trigger = 1;
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m.lock();
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uLCD.printf("DONE!");
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m.unlock();
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for (i=0; i<10; i=i+2) {
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//--SPEAKER
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speaker.period(1.0/969.0);
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speaker = float(i)/50.0;
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wait(.5);
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speaker.period(1.0/800.0);
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wait(.5);
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}
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led2 = !led2;
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}
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if(tempC < 27 || x > 0.3 || y < -0.5 || dist_sonar > 50) {
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sound = false;
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speaker = 0.0;
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camera_trigger = 0;
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}
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else {
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sound = false;
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}
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}
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Thread::wait(200);
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}
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}
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int main() {
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pb1.mode(PullUp);
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pb2.mode(PullUp);
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pb3.mode(PullUp);
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uLCD.locate(0,0);
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uLCD.printf("Alarm System Menu");
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uLCD.locate(0,3);
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uLCD.printf("1: Boot System");
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uLCD.locate(0,5);
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uLCD.printf("2: How to Guide");
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while(1) {
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if(pb1 == 0) {
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uLCD.cls();
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break;
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} if(pb2 == 0) {
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uLCD.cls();
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uLCD.locate(0,0);
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uLCD.printf("Connect via BT");
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uLCD.locate(0,3);
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uLCD.printf("'1' to arm");
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uLCD.locate(0,5);
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uLCD.printf("'2' to disarm");
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uLCD.locate(0,7);
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uLCD.printf("'PB1 to exit");
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}
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}
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//Begin the threads
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thread1.start(temp_thread);
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thread2.start(accel_thread);
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thread3.start(sonar_thread);
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thread4.start(speaker_thread);
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thread5.start(checker_thread);
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thread6.start(camera_thread);
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char bnum=0;
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char bhit=0;
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while(1) {
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m.lock();
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//Connect with the Bluetooth Module
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if(blue.readable()) {
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if (blue.getc()=='!') {
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if (blue.getc()=='B') {
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button data packet bnum = blue.getc();
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button number bhit = blue.getc();
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//1=hit, 0=release
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switch (bnum) {
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case '1': // Arm the system
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if (bhit=='1') {
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arm = true;
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pin = 0;
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led1 = 1;
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} break;
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case '2': // Disarm the system
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if (bhit=='1') {
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arm = false;
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led1 = 0;
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} break;
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case '3' : // Email for help
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if (bhit = '1') {
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} break;
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default: break;
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}
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}
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}
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}
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m.unlock();
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Thread::wait(100);
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}
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}

‎second_mbed.cpp

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#include "mbed.h"
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include "uLCD_4DGL.h"
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include "JPEGCamera.h"
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DigitalOut myled1(LED1);
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//show successful picture was taken
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DigitalOut myled2(LED2);
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//show end of sequence
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DigitalOut myled3(LED3);
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//show picture take failed
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DigitalOut myled4(LED4);
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//show camera is not ready
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uLCD_4DGL uLCD(p9, p10, p11);
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DigitalIn signal(p20);
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Serial pc(USBTX, USBRX);
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int main() {
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uLCD.printf("HeLLO");
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while(1) {
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pc.printf("Signal is: %f \n", signal);
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if(signal == 1) {
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uLCD.printf("Hello");
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JPEGCamera camera(p13, p14); TX, RX LocalFileSystem local("local");
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//save images on mbed
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camera.setPictureSize(JPEGCamera::SIZE640x480);
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Timer timer;
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timer.start();
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if(camera.setPictureSize(JPEGCamera::SIZE640x480)) {
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myled1 = 1; wait(2.0); myled1 = 0; wait(2.0);
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}
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for (int i = 1; i < 5; i++) {
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if (camera.isReady()) {
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char filename[32]; sprintf(filename, "/local/pict%03d.jpg", i); uLCD.printf("Picture: %s \n", filename);
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if (camera.takePicture(filename)) {
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while (camera.isProcessing()) {
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camera.processPicture();
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}
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myled1 = 1;
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//show successful picture was taken
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wait(2.0); myled1 = 0;
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} else {
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uLCD.printf("take picture failed\n");
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myled3 = 1;
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//show picture take failed
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wait(2.0);
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myled3 = 0;
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}
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} else {
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uLCD.printf("camera is not ready\n");
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myled4 = 1;
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//show camera is not ready
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wait(2.0);
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myled4 = 0;
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}
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}
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myled2 = 1;
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//show end of sequence
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wait(2.0);
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myled2 = 0;
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uLCD.printf("time = %f\n", timer.read());
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}
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}
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}

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