amir gahroosi
final_code
Diff: main.cpp
- Revision:
- 0:7208cb44ad05
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Dec 10 16:48:21 2014 +0000
@@ -0,0 +1,364 @@
+#include "mbed.h"
+#include "airhumidity.h"
+#include <string>
+
+DigitalOut myled(LED1);
+Serial pc(USBTX, USBRX); // tx, rx
+Serial bt(PTE22, PTE23); // initializing Uart1 channel for connecting the bluetooth device
+AnalogIn gas_output(PTB1); //initializing the ADC output for gas sensor
+
+using namespace std;
+
+DigitalOut R1 (D6);
+DigitalOut R2 (D7);
+DigitalOut R3 (D8);
+DigitalOut R4 (D9);
+
+InterruptIn C1 (D10);
+DigitalIn C2 (D11);
+DigitalIn C3 (D12);
+
+DigitalOut keyled(LED1);
+DigitalOut flash(LED4);
+
+AnalogIn ain(PTB0);
+
+Timer t;
+float tm ;
+
+char key;
+int s=0;
+
+float value_adc =0.0f;
+int dig_value = 0;
+Timer timeout;
+float current_time = 0.0;
+
+unsigned char arrkey[12]={ '1' , '2' , '3' ,
+ '4' , '5' , '6' ,
+ '7' , '8' , '9' ,
+ '*' , '0' , '#' };
+
+char msg;
+float temp=0.0;
+float humid=0.0;
+int unit =0;
+string room_safety_status = "issafe";
+bool room_safe = true;
+bool someone_in = false;
+bool door_lock_status = true;
+string is_door_locked = "locked";
+string room_status = "yes";
+string room_gas_status = "safe";
+float gas_sensor_value = 0.0;
+
+bool allow_entrance = false;
+bool authorized_person_entered = false;
+bool authorized_person_left = true;
+string last_person = "N/A";
+
+
+void unlock (){
+ printf("DOOR UNLOCK: Welcome!\n\r");
+ door_lock_status = false;
+}
+
+void lock (){
+ printf("DOOR LOCK\n\r");
+ door_lock_status = true;
+}
+
+unsigned char char_string[4]= {'*' ,'*' ,'*' ,'*'};
+unsigned char password[4]={'1' , '2' , '3' , '4'};
+unsigned char passwordA[4]={'4' , '5' , '6' , '7'};
+
+unsigned char keypad(){
+ unsigned char r,b;
+
+ while(current_time<5){
+ current_time = timeout.read();
+ for (r=0; r<4; r++){
+ b=4;
+ R1 = 1; R2 = 1 ; R3 = 1 ; R4 = 1;
+ if (r == 0) R1 = 0;
+ if (r == 1) R2 = 0;
+ if (r == 2) R3 = 0;
+ if (r == 3) R4 = 0;
+
+ if(C1==0) b=0;
+ if(C2==0) b=1;
+ if(C3==0) b=2;
+
+ if ((!(b==4))){
+ key=arrkey[(r*3)+b];
+ while(C1==0);
+ while(C2==0);
+ while(C3==0);
+
+ wait(0.2);
+
+ char_string[s] = key;
+ s++;
+ return key;
+ }
+
+ }
+ }
+ return 'Q';
+}
+
+void handleKeypad (){
+
+ bool finished = false ;
+ printf("In Intruppt\n\r");
+ __disable_irq();
+ C1.disable_irq ();
+
+ int firsttime = 0;
+
+ if (firsttime == 0)
+ {
+ s = -1;
+ timeout.reset();
+ timeout.start();
+ }
+
+ current_time = timeout.read();
+
+ while ((! finished) && (current_time < 5.0)){
+ key = keypad();
+ current_time = timeout.read();
+ if (s == 4){
+ finished = true;
+ firsttime = 1;
+
+ printf("Password: ");
+ for (int i = 0 ; i < 4 ; i++)
+ printf("%c", char_string[i]);
+ printf("\n\r");
+ s = 0;
+ /////////////check password functions//////////
+ int j = 0;
+ int matchSara = 1;
+ while (j < 4){
+ if (char_string [j] == password[j])
+ j++;
+ else{
+ matchSara = 0;
+ break;
+ }
+ if(matchSara && j == 3)
+ {
+ last_person = "Sara";
+ allow_entrance = true;
+ door_lock_status = false;
+ room_safety_status = "issafe";
+ room_safe = true;
+ }
+ }
+
+ int k = 0;
+ int matchAmir = 1;
+ while (k < 4){
+ if (char_string [k] == passwordA[k])
+ k++;
+ else{
+ matchAmir = 0;
+ break;
+ }
+ if(matchAmir && k == 3)
+ {
+ last_person = "Amir";
+ allow_entrance = true;
+ door_lock_status = false;
+ room_safety_status = "issafe";
+ room_safe = true;
+ }
+ }
+
+ if (matchSara == 1){
+ printf("MATCH Sara\n\r");
+ room_safety_status = "issafe";
+ room_safe = true;
+ unlock();
+ C1.enable_irq();
+ __enable_irq();
+ break;
+ }
+ else if (matchAmir == 1){
+ printf("MATCH Amir\n\r");
+ room_safety_status = "issafe";
+ room_safe = true;
+ unlock();
+ C1.enable_irq();
+ __enable_irq();
+ break;
+ }
+ else{
+ printf("WRONG\n\r");
+ printf("lock for wrong password\n\r");
+ C1.enable_irq();
+ __enable_irq();
+ break;
+ }
+ } // end s=4
+ } //end while
+ timeout.stop();
+ C1.enable_irq ();
+ __enable_irq();
+}
+
+
+void uart_interrupt_fun() {
+ __disable_irq();
+ msg = bt.getc();
+ //pc.putc(msg);
+ if(msg == 's'){
+ msg = 'n';
+ wait(1);
+ //pc.printf(" \n\r") ;
+ bt.printf("info %4.2f %4.2f %s %s %s %s %s end\n\r", temp, humid, room_status,room_gas_status, room_safety_status, last_person, is_door_locked) ;
+ wait(3);
+ for(int i=0; i<2; i++)
+ {
+ myled = 1;
+ wait(0.2);
+ myled = 0;
+ wait(0.2);
+ }
+
+ }
+ __enable_irq();
+
+}
+
+void check_rooms_presence_safety()
+{
+ if(someone_in)
+ {
+ if( !door_lock_status )
+ {
+
+ room_safety_status = "issafe";
+ room_safe = true;
+ authorized_person_entered = true;
+ if(authorized_person_entered)
+ {
+ door_lock_status = true;
+ }
+ }
+ else /*if(!authorized_person_entered || authorized_person_left) */
+ {
+ room_safety_status = "notsafe";
+ room_safe = false;
+ }
+ }
+ if(! someone_in)
+ {
+ if(authorized_person_entered)
+ {
+ authorized_person_left = true;
+ authorized_person_entered = false;
+ allow_entrance = false;
+ door_lock_status = true;
+ room_safety_status = "issafe";
+ room_safe = true;
+ }
+ if(!authorized_person_entered && !(door_lock_status))
+ {
+ door_lock_status = false;
+ }
+ if(!room_safe)
+ {
+ room_safety_status = "notsafe";
+ }
+
+ }
+
+}
+
+const char * gas_status_function()
+{
+ if(gas_sensor_value < 45)
+ {
+ return "safe";
+ }
+ else
+ {
+ return "danger";
+ }
+ return "notvalid";
+}
+
+void PIR_status_function()
+{
+ if (value_adc < 0.2)
+ {
+ //printf("Nobody is here!\n\r");
+ someone_in = false;
+ }
+ else {
+ //printf("Somebody is here!\n\r");
+ someone_in = true;
+ }
+}
+
+
+const char * change_room_status_string()
+{
+ if(someone_in)
+ {
+ return "yes";
+ }
+ else
+ {
+ return "no";
+ }
+}
+
+const char * door_lock_status_func()
+{
+ if(door_lock_status)
+ {
+ return "lock";
+ }
+ else
+ {
+ return "unlock";
+ }
+}
+
+void print_data_uart0()
+{
+ printf("Temperature is %4.2f C \r\n",temp);
+ printf("Humid is %4.2f \r\n",humid);
+ printf("Presence: %s \r\n",room_status);
+ printf("gas: %f\r\n", gas_sensor_value);
+ printf("room safety: %s\r\n",room_safety_status);
+ printf("door lock status %s\n\r", is_door_locked);
+ printf("Analog %5.2f\n\r",value_adc);
+}
+
+
+int main() {
+
+ while(1){
+
+ bt.baud(38400);
+ bt.attach(&uart_interrupt_fun);
+
+ R4 = 0;
+ C1.fall(&handleKeypad);
+
+ temp = get_air_temp_inside(unit);
+ humid = get_air_humid_inside();
+ value_adc = ain.read();
+ gas_sensor_value = gas_output.read()*50;
+ check_rooms_presence_safety();
+ room_gas_status = gas_status_function();
+ PIR_status_function();
+ room_status = change_room_status_string();
+ is_door_locked = door_lock_status_func();
+ print_data_uart0();
+ }
+}