Revision 0:72aeef60e1fc, committed 2019-01-03

Comitter:

sralph3

Date:

Thu Jan 03 22:40:26 2019 +0000

Commit message:

Pt. 4 | Encryption encrypt program

Changed in this revision

diff -r 000000000000 -r 72aeef60e1fc 4DGL-uLCD-SE.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/4DGL-uLCD-SE.lib	Thu Jan 03 22:40:26 2019 +0000
@@ -0,0 +1,1 @@
+https://mbed.org/users/4180_1/code/4DGL-uLCD-SE/#e39a44de229a

diff -r 000000000000 -r 72aeef60e1fc Letter.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Letter.cpp	Thu Jan 03 22:40:26 2019 +0000
@@ -0,0 +1,29 @@
+#include "Letter.h"
+using namespace std;
+
+Letter::Letter()
+{
+  current= 'A';
+}
+
+void Letter::inc()
+{
+  if (current=='Z'){
+      current = 'A';
+    }
+    else{
+        current++;
+    }
+}
+void Letter::dec()
+{
+    if (current=='A'){
+        current = 'Z';
+    }
+    else {
+        current--;
+    }
+  }
+char Letter::getChar(){
+    return current;
+    }

diff -r 000000000000 -r 72aeef60e1fc Letter.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Letter.h	Thu Jan 03 22:40:26 2019 +0000
@@ -0,0 +1,12 @@
+#ifndef LETTER_H
+#define LETTER_H
+class Letter{
+    public:
+        Letter();
+        void inc();
+        void dec();
+        char getChar();
+    private:
+        char current;
+};
+#endif
\ No newline at end of file

diff -r 000000000000 -r 72aeef60e1fc PinDetect.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PinDetect.lib	Thu Jan 03 22:40:26 2019 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/AjK/code/PinDetect/#cb3afc45028b

diff -r 000000000000 -r 72aeef60e1fc SDFileSystem.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SDFileSystem.lib	Thu Jan 03 22:40:26 2019 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/SDFileSystem/#c8f66dc765d4

diff -r 000000000000 -r 72aeef60e1fc Shiftbrite.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Shiftbrite.h	Thu Jan 03 22:40:26 2019 +0000
@@ -0,0 +1,26 @@
+#include "mbed.h"
+
+//Setup a new class for a Shiftbrite RGB LED module
+class Shiftbrite
+{
+public:
+    Shiftbrite(PinName pin_e, PinName pin_l, PinName pin_do, PinName pin_di, PinName pin_clk);
+    void write(int red, int green, int blue);
+
+private:
+//class sets up the pins
+    DigitalOut _pin_e;
+    DigitalOut _pin_l;
+    SPI _spi;
+};
+
+Shiftbrite::Shiftbrite(PinName pin_e, PinName pin_l, PinName pin_do, PinName pin_di, PinName pin_clk)
+    : _pin_e(pin_e), _pin_l(pin_l), _spi(pin_do, pin_di, pin_clk)
+{
+ // ADD CODE HERE
+}
+
+void Shiftbrite::write(int red, int green, int blue)
+{
+ // ADD CODE HERE
+}

diff -r 000000000000 -r 72aeef60e1fc Speaker.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Speaker.h	Thu Jan 03 22:40:26 2019 +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

diff -r 000000000000 -r 72aeef60e1fc TMP36.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TMP36.h	Thu Jan 03 22:40:26 2019 +0000
@@ -0,0 +1,31 @@
+#include "mbed.h"
+
+//Setup a new class for TMP36 sensor
+class TMP36
+{
+public:
+    TMP36(PinName pin);
+    TMP36();
+    operator float ();
+    float read();
+private:
+//class sets up the AnalogIn pin
+    AnalogIn _pin;
+};
+
+TMP36::TMP36(PinName pin) : _pin(pin)
+{
+// _pin(pin) means pass pin to the AnalogIn constructor
+}
+
+float TMP36::read()
+{
+//convert sensor reading to temperature in degrees C
+    return ((_pin.read()*3.3)-0.500)*100.0;
+}
+//overload of float conversion (avoids needing to type .read() in equations)
+TMP36::operator float ()
+{
+//convert sensor reading to temperature in degrees C
+    return ((_pin.read()*3.3)-0.500)*100.0;
+}
\ No newline at end of file

diff -r 000000000000 -r 72aeef60e1fc main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Jan 03 22:40:26 2019 +0000
@@ -0,0 +1,164 @@
+#include "mbed.h"
+#include "PinDetect.h"
+#include "uLCD_4DGL.h"
+#include "SDFileSystem.h"
+#include "Letter.h"
+uLCD_4DGL uLCD(p28, p27, p29); // serial tx, serial rx, reset pin;
+SDFileSystem sd(p5, p6, p7, p8, "sd");
+
+//declare objects for pins used with pushbuttons
+PinDetect pb1(p18);
+PinDetect pb2(p17);
+PinDetect pb3(p16);
+
+//Populate arrayCipher from cipher on SD
+char arrayCipher [1001];
+
+enum InputType {FWD,BACK,ENC,NON};
+enum StateType {Q0, Q1, Q2, Q3};
+Letter currLetter;
+int position=0;
+FILE *fp2;
+
+InputType input = NON;
+StateType state = Q0;
+
+//Encrypt
+char decrypt (char inp, char arrayCipher[], int startPt)
+{
+    int sum = (inp-65)-(arrayCipher[startPt]-65) + 26;
+    sum = sum % 26;
+    char sumC = sum;
+    return sumC+65;
+}
+
+// Callback routine is interrupt activated by a debounced pb3 hit
+void pb3_hit_callback (void)
+{
+    if (state==Q0){
+        uLCD.cls();
+        uLCD.printf("DECRYPTING");
+        wait(1.0);
+        char inC = currLetter.getChar();
+        char outC=decrypt(inC, arrayCipher, position);
+        uLCD.cls();
+        uLCD.text_width(5);
+        uLCD.text_height(5);
+        uLCD.printf("%c", outC);
+        position++;
+        
+        //update position in txt doc
+        fp2 = fopen("/sd/mydir/positionCipherReceiver.txt", "w");
+        if(fp2 == NULL) {
+            uLCD.printf("Error Open \n");
+             }
+        else{
+            fprintf(fp2, "%i",position);
+            fclose(fp2);
+            }
+        
+        wait(1.0);
+        input = ENC;
+        }
+    else{
+        input=ENC;
+        }
+    
+}
+    // Callback routine is interrupt activated by a debounced pb1 hit
+void pb1_hit_callback (void)
+    {
+        // ADD CODE HERE THAT YOU WHAT TO RUN WHEN INTERUPT IS GENERATED
+        currLetter.inc();
+}
+        
+// Callback routine is interrupt activated by a debounced pb2 hit
+void pb2_hit_callback (void)
+ {
+         currLetter.dec();
+}
+
+
+int main() {
+    
+    FILE *fp = fopen("/sd/mydir/OTP.txt", "r");
+    if(fp == NULL){
+        uLCD.printf("Open Error!!!\n");
+    }
+    else{
+        fscanf(fp, "%s", arrayCipher);
+        fclose(fp);
+    }
+    
+    FILE *fp2 = fopen("/sd/mydir/positionCipherReceiver.txt", "r");
+    if(fp2 == NULL) {
+        uLCD.printf("Open Error!!!\n");
+         }
+    else{
+        fscanf(fp2, "%i",&position);
+        fclose(fp2);
+        }
+    
+  //  int sizeIn = sizeof(inChars)/sizeof(*inChars);
+
+
+    pb1.mode(PullUp);
+    pb2.mode(PullUp);
+    pb3.mode(PullUp);
+    
+    // Delay for initial pullup to take effect
+    wait(.01);
+    
+    // Setup Interrupt callback functions for a pb hit
+    pb1.attach_deasserted(&pb1_hit_callback);
+    pb2.attach_deasserted(&pb2_hit_callback);
+    pb3.attach_deasserted(&pb3_hit_callback);
+
+    // Start sampling pb inputs using interrupts
+    pb1.setSampleFrequency(); //default is 20KHz sampling
+    pb2.setSampleFrequency();
+    pb3.setSampleFrequency();
+    // pushbuttons now setup and running
+
+while(1) {
+    switch(state){
+        case(Q0):
+            //Produce output for this state
+            uLCD.locate(0,0);
+            uLCD.text_width(5);
+            uLCD.text_height(5);
+            uLCD.printf("%c",currLetter.getChar());
+            wait(.5);
+            //calculate next state
+            if (input == ENC){
+                state = Q1;
+                input=NON;
+                uLCD.cls();
+             }
+            else{ //input should be stay
+                state = Q0;
+            }
+            break;
+        
+        case (Q1):
+             //Produce output for this state
+            
+            uLCD.locate(0,0);
+            uLCD.text_width(1);
+            uLCD.text_height(1);
+            uLCD.printf("Press Again To Decrypt More");
+              //calculate next state
+              if (input == ENC){
+                 state = Q0;
+                 input = NON;
+                 uLCD.cls();
+                 }
+            else //input should be stay
+                state = Q1;
+            break;
+            
+        }
+        //end switch
+        wait (0.1);
+    }
+}
\ No newline at end of file

diff -r 000000000000 -r 72aeef60e1fc mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Jan 03 22:40:26 2019 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/824293ae5e43
\ No newline at end of file