Macdonald Nwabia
2nd year embedded systems project
Revision 1:9d7c34bfe43e, committed 2020-12-15
- Comitter:
- nwabiam
- Date:
- Tue Dec 15 18:15:48 2020 +0000
- Parent:
- 0:76a291b4c5db
- Commit message:
- Simple Electronic Lock (Solenoid) code
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/C12832.lib Tue Dec 15 18:15:48 2020 +0000 @@ -0,0 +1,1 @@ +https://os.mbed.com/users/askksa12543/code/C12832/#990d5eec2ef6
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Door_1_Docs/RGBled.cpp Tue Dec 15 18:15:48 2020 +0000
@@ -0,0 +1,10 @@
+#include "RGBled.h"
+
+RGBled::RGBled (PinName ledPin): rgbled (DigitalOut(ledPin)){
+}
+RGBled::~RGBled(){
+}
+bool RGBled::SetRGBledStatus (bool RGBStatus){
+
+ rgbled = RGBStatus;
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Door_1_Docs/RGBled.h Tue Dec 15 18:15:48 2020 +0000
@@ -0,0 +1,19 @@
+#ifndef RGBled_H
+#define RGBled_H
+
+#include <mbed.h>
+
+class RGBled {
+
+ public:
+ RGBled (PinName ledPin);
+ ~RGBled ();
+ bool SetRGBledStatus (bool RGBStatus);
+
+ private:
+ DigitalOut rgbled;
+
+
+};
+
+#endif
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Door_1_Docs/Speaker.h Tue Dec 15 18:15:48 2020 +0000
@@ -0,0 +1,19 @@
+#include "mbed.h"
+// new class to play a note on Speaker based on PwmOut class
+class Speaker
+{
+public:
+ Speaker(PinName pin) : _pin(pin) {
+// _pin(pin) means pass pin to the Speaker Constructor
+ }
+// class method to play a note based on PwmOut class
+ void PlayNote(float frequency, float duration, float volume) {
+ _pin.period(1.0/frequency);
+ _pin = volume/2.0;
+ wait(duration);
+ _pin = 0.0;
+ }
+
+private:
+ PwmOut _pin;
+};
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Door_1_Docs/hcsr04.cpp Tue Dec 15 18:15:48 2020 +0000
@@ -0,0 +1,29 @@
+#include "hcsr04.h"
+#include "mbed.h"
+/*
+*HCSR04.cpp
+*/
+HCSR04::HCSR04(PinName t, PinName e) : trig(t), echo(e) {}
+ float HCSR04::echo_duration() {
+
+ timer.reset(); //reset timer
+ trig=0; // trigger low
+ wait_us(2); // wait
+ trig=1; // trigger high
+ wait_us(10);
+ trig=0; // trigger low
+ while(!echo); // start pulseIN
+ timer.start();
+ while(echo);
+ timer.stop();
+ return timer.read_us();
+
+}
+
+//return distance in cm
+float HCSR04::distance(){
+ duration = echo_duration();
+ distance_cm = (duration/2)/29.1 ;
+ return distance_cm;
+
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Door_1_Docs/hcsr04.h Tue Dec 15 18:15:48 2020 +0000
@@ -0,0 +1,20 @@
+#ifndef hcsr04_H
+#define hcsr04_H
+#include "mbed.h"
+
+
+
+class HCSR04 {
+ public:
+ HCSR04(PinName t, PinName e);
+ float echo_duration();
+ float distance();
+
+ private:
+ DigitalOut trig;
+ DigitalIn echo;
+ Timer timer;
+ float duration,distance_cm;
+};
+
+#endif
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Solenoid.cpp Tue Dec 15 18:15:48 2020 +0000
@@ -0,0 +1,11 @@
+#include "Solenoid.h"
+
+Solenoid::Solenoid (PinName targetSolenoidPin): solenoid (DigitalOut(targetSolenoidPin)){
+}
+Solenoid::~Solenoid(){
+}
+bool Solenoid::SetSolenoidStatus (bool Status){
+
+ solenoid = Status;
+ //mySolenoid_1.SetSolenoidStatus();
+}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Solenoid.h Tue Dec 15 18:15:48 2020 +0000
@@ -0,0 +1,23 @@
+#ifndef Solenoid_H
+#define Solenoid_H
+
+#include <mbed.h>
+
+class Solenoid {
+
+ public:
+ Solenoid (PinName targetSolenoidPin);
+ ~Solenoid ();
+ bool SetSolenoidStatus (bool Status);
+ //float distance
+
+ private:
+ DigitalOut solenoid;
+
+};
+
+#endif
+
+
+
+
--- a/main.cpp Thu Oct 29 16:38:37 2015 +0000
+++ b/main.cpp Tue Dec 15 18:15:48 2020 +0000
@@ -1,15 +1,68 @@
#include "mbed.h"
-
-DigitalOut myled(LED1);
-DigitalOut Ctrl(p8); //Solenoid output control bit
-
-int main() {
+#include "hcsr04.h"
+#include "Solenoid.h"
+#include "RGBled.h"
+#include "Speaker.h"
+#include "C12832.h"
+#include <iostream>
+
+HCSR04 sensor(p9, p10);
+Solenoid mySolenoid (p18);
+Solenoid mySolenoid_2 (p19);
+RGBled redled(p24);
+RGBled greenled(p23);
+C12832 lcd(p5, p7, p6, p8, p11);
+InterruptIn MagSense(p16);
+Speaker Interrupt(p26);
+DigitalOut myled1(LED1);
+
+void flip()
+{
while(1) {
- Ctrl = 1; //ON
- myled = 1;
- wait(0.5);
- Ctrl = 0; //OFF
- myled = 0;
- wait(2);
+ if (mySolenoid.SetSolenoidStatus (false)){
+ Interrupt.PlayNote(969, 0.1, 1.0); // When contact is broken, interrupt the main program and sound the alarm and perform flip funtion
+ Interrupt.PlayNote(800, 0.1, 1.0);
+ lcd.locate (0,0);
+ lcd.printf("Door Open ");
+ redled.SetRGBledStatus (true);
+ greenled.SetRGBledStatus (false);
+ }
+ if (MagSense.read() == 0) { // when magsensor is not broken break the loop
+ break;
+ }
}
}
+int main()
+{
+ redled.SetRGBledStatus (false);
+ greenled.SetRGBledStatus (false);
+ float distance = sensor.distance(); //constantly read floating distance
+ MagSense.rise(&flip);
+ lcd.cls();
+ while(1) {
+ float distance = sensor.distance();
+ if (mySolenoid.SetSolenoidStatus (false)) {
+ greenled.SetRGBledStatus (false);
+ redled.SetRGBledStatus (true);
+ lcd.locate(0,0);
+ lcd.printf("**UNLOCKED** ");
+ }
+ if (distance < 7) {
+ while (1) {
+ mySolenoid.SetSolenoidStatus (true);
+ mySolenoid_2.SetSolenoidStatus (true);
+ if (mySolenoid.SetSolenoidStatus (true)) {
+ greenled.SetRGBledStatus (true);
+ redled.SetRGBledStatus (false);
+ lcd.locate(0,0);
+ lcd.printf("**LOCKED** ");
+ }
+ }
+ } else if (distance > 7) {
+ printf("distance = %f\n",distance);
+ wait(0.5); // 1 sec
+ }
+ }
+
+}
+