Revision 0:ea6fa42df9ec, committed 2018-06-02

Comitter:

Ceyhun_Emre

Date:

Sat Jun 02 09:31:29 2018 +0000

Commit message:

My team changed mapping of the keys for the sake of the constraints of our Morse Encoder/ Decoder device. ; ; Regards.

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PS2ASCII.cpp	Sat Jun 02 09:31:29 2018 +0000
@@ -0,0 +1,132 @@
+#include "PS2ASCII.h"
+
+//===================================
+//*Constructor*
+//===================================
+
+PS2ASCII::PS2ASCII(PinName data, PinName clk) : kbd(data,clk) ,_caps(false), _shift(false),  _E0flag(false) ,_numlock(false)
+{
+    
+}
+
+//===================================
+//Functions
+//===================================
+
+unsigned char PS2ASCII::getChar()
+{
+     while(1)
+     {
+         _E0flag = false;
+         unsigned char keypress = kbd.rd();                //code in
+        
+        if(keypress == 0xE0)                            //is it a special E0 key?
+        {
+            keypress = kbd.rd();                        //next byte in
+            if(keypress == 0xF0)                        //is it a break code?
+            {
+                keypress = kbd.rd();                    //if so chew it up and back to start
+                
+                continue;
+            }
+            
+            _E0flag = true;                                //tell us that it is an E0 function
+            return keypress;
+        }
+        
+        if((keypress == 0x12) || (keypress == 0x59))    //SHIFT pressed?
+        {
+            _shift = true;
+            continue;
+        }
+        
+        if(keypress == 0xF0)                            //gets rid of byte 1 of break code
+        {
+            keypress = kbd.rd();                        //byte 2 of break code in
+                
+            if((keypress == 0x12) || (keypress == 0x59))
+            {
+                _shift = false;
+            }
+            continue;
+        }
+        
+        switch (keypress) {
+            case 0x58:
+                _caps = !_caps; //CAPS LOCK key
+                kbd.wr(0xED);
+                if (_caps && _numlock)
+                    kbd.wr(0x06);
+                else if (_caps && !_numlock)
+                    kbd.wr(0x04);
+                else if (!_caps && _numlock)
+                    kbd.wr(0x02);
+                else
+                    kbd.wr(0x00);                                
+                continue;
+            case 0x77:
+                _numlock = !_numlock;
+                kbd.wr(0xED);
+                if (_caps && _numlock)
+                    kbd.wr(0x06);
+                else if (_caps && !_numlock)
+                    kbd.wr(0x04);
+                else if (!_caps && _numlock)
+                    kbd.wr(0x02);
+                else
+                    kbd.wr(0x00); 
+                continue;
+            default:
+                break;
+        }
+        
+// We do not need shift and caps lock in our project, since we do not use uppercase letters.        
+        
+//        unsigned char initial_keypress = keypress;
+        
+//        if(_shift == true)                                //if SHIFT is pressed take shifted character
+//        {
+//            keypress = shift_on[keypress];
+//        }
+//            
+//       if((_caps == true)&&(initial_keypress >= 97)&&(initial_keypress <= 127))
+//        {
+//            keypress = shift_on[keypress];                //if caps is on shift the letter up
+//        }
+
+        return(keypress);    
+              
+    }
+}
+
+unsigned char PS2ASCII::getASCII(unsigned char keypress) {
+    unsigned char character = ps2CharMap[keypress];
+    
+    if (!_E0flag && !_numlock) {
+            if (keypress == 0x70 || keypress == 0x69 || keypress == 0x72 || keypress == 0x7A ||
+                keypress == 0x6B || keypress == 0x73 || keypress == 0x74 || keypress == 0x6C ||
+                keypress == 0x75 || keypress == 0x7D)
+                character = ' ';
+                 
+        }
+        
+    return character;
+}
+    
+bool PS2ASCII::E0flag()
+{
+    return _E0flag;
+}
+
+bool PS2ASCII::numlock()
+{
+    return _numlock;
+}
+     
+bool PS2ASCII::caps() {
+    return _caps;
+}
+
+bool PS2ASCII::shift() {
+    return _shift;     
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PS2ASCII.h	Sat Jun 02 09:31:29 2018 +0000
@@ -0,0 +1,48 @@
+#ifndef MBED_PS2ASCII_H
+#define MBED_PS2ASCII_H
+
+#include "PS2Kbd.h"
+#include "mbed.h"
+
+class PS2ASCII {
+
+public:
+
+    PS2ASCII(PinName data, PinName clk);
+    unsigned char getChar();
+    unsigned char getASCII(unsigned char keypress);
+    bool caps();
+    bool shift();
+    bool E0flag();
+    bool numlock();
+        
+private:
+
+    PS2Kbd kbd;
+    bool _caps;                        
+    bool _shift; 
+    bool _E0flag; 
+    bool _numlock;
+};
+
+    static const unsigned char shift_on[] = {
+//   0     1     2     3     4     5     6     7     8     9     A     B     C     D     E     F
+    ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  '`',  ' ', // 00-0F
+    ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ', // 10-1F
+    ' ', 0x21, 0x22,  '~', 0x24, 0x25, 0x26,  '@', 0x28, 0x29, 0x30, 0x31,  '<',  '_',  '>',  '?', // 20-2F
+    ')',  '!', '\"', 0x9C,  '$',  '%',  '^',  '&',  '*',  '(',  ' ',  ':',  ' ',  '+',  ' ',  ' ', // 30-3F
+    0xAA, 'a',  'b',  'c',  'd',  'e',  'f',  'g',  'h',  'i',  'j',  'k',  'l',  'm',  'n',  'o', // 40-6F
+    'p',  'q',  'r',  's',  't',  'u',  'v',  'w',  'x',  'y',  'z',  '{',  '|',  '}',  ' ',  ' ', // 50-7F
+    ' ',  'A',  'B',  'C',  'D',  'E',  'F',  'G',  'H',  'I',  'J',  'K',  'L',  'M',  'N',  'O', // 60-4F
+    'P',  'Q',  'R',  'S',  'T',  'U',  'V',  'W',  'X',  'Y',  'Z', 0x7B, 0x7C, 0x7D, 0x7E, 0x7F, // 70-5F
+    ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ', // 80-8F
+    ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ', // 90-9F
+    ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ', // A0-AF
+    ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ', // B0-BF
+    ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ', // C0-CF
+    ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ', // D0-DF
+    ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ', // E0-EF
+    NULL, ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ',  ' ', // F0-FF
+};
+
+#endif

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PS2Kbd.cpp	Sat Jun 02 09:31:29 2018 +0000
@@ -0,0 +1,73 @@
+#include "PS2Kbd.h"
+#include "mbed.h"
+
+
+/* ==================================================================
+ * Constructor
+ ================================================================= */
+
+PS2Kbd::PS2Kbd(PinName clk, PinName din) 
+    : _ps2clk(clk), _ps2din(din) {
+   
+}    
+
+// =============================
+// 
+// =============================
+unsigned char PS2Kbd::rd(void)
+{
+    unsigned int buf = 0x00;
+    int i;
+    
+    _ps2clk = 0;
+
+    // both input
+    _ps2din.input();
+    _ps2clk.input();
+
+    for(i=0;i<11;i++) {
+        while(_ps2clk);
+        while(!_ps2clk);
+        buf = buf >> 1;
+        buf |= _ps2din ? 512 : 0;
+    }
+
+    // output
+    _ps2clk.output();
+
+    buf &= 0xFF;
+
+    return(ps2KeyMap[(unsigned char)buf]);
+    //return (unsigned char)buf;
+}
+
+
+// =============================
+// 
+// =============================
+void PS2Kbd::wr(unsigned char)
+{
+    unsigned int buf = 0x00;
+    int i;
+    
+    _ps2clk = 0;
+
+    // both input
+    _ps2din.input();
+    _ps2clk.input();
+
+    for(i=0;i<11;i++) {
+        while(_ps2clk);
+        while(!_ps2clk);
+        buf = buf >> 1;
+        buf |= _ps2din ? 512 : 0;
+    }
+
+    // output
+    _ps2clk.output();
+
+    buf &= 0xFF;
+
+}
+
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PS2Kbd.h	Sat Jun 02 09:31:29 2018 +0000
@@ -0,0 +1,61 @@
+#ifndef PS2KBD_H
+#define PS2KBD_H
+
+#include "mbed.h"
+
+class PS2Kbd  {
+
+public:
+
+    PS2Kbd(PinName clk, PinName din);
+    unsigned char rd(void);
+    void wr(unsigned char);
+    
+protected:
+    DigitalInOut _ps2clk;
+    DigitalInOut _ps2din;
+
+};
+
+
+static const unsigned char ps2KeyMap[] = {
+//   0     1     2     3     4     5     6     7     8     9     A     B     C     D     E     F
+    0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, // 00-0F
+    0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, // 10-1F
+    0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, // 20-2F
+    0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E, 0x3F, // 30-3F
+    0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, // 40-4F
+    0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x5B, 0x5C, 0x5D, 0x5E, 0x5F, // 50-5F
+    0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, // 60-6F
+    0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x7B, 0x7C, 0x7D, 0x7E, 0x7F, // 70-7F
+    0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, // 80-8F
+    0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0x9B, 0x9C, 0x9D, 0x9E, 0x9F, // 90-9F
+    0xA0, 0xA1, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xAB, 0xAC, 0xAD, 0xAE, 0xAF, // A0-AF
+    0xB0, 0xB1, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, // B0-BF
+    0xC0, 0xC1, 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xCB, 0xCC, 0xCD, 0xCE, 0xCF, // C0-CF
+    0xD0, 0xD1, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, // D0-DF
+    0xE0, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, // E0-EF
+    0xF0, 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF, // F0-FF
+};
+
+static const unsigned char ps2CharMap[] = {
+//   0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '`', ' ', // 00-0F
+    ' ', ' ', ' ', ' ', ' ', 'q', '1', ' ', ' ', ' ', 'z', 's', 'a', 'w', '2', ' ', // 10-1F
+    ' ', 'c', 'x', 'd', 'e', '4', '3', ' ', ' ', ' ', 'v', 'f', 't', 'r', '5', ' ', // 20-2F
+    ' ', 'n', 'b', 'h', 'g', 'y', '6', ' ', ' ', ' ', 'm', 'j', 'u', '7', '8', ' ', // 30-3F
+    ' ', ',', 'k', 'i', 'o', '0', '9', ' ', ' ', '.', '/', 'l', ';', 'p', '-', ' ', // 40-4F
+    ' ', ' ','\'', ' ', '[', '=', ' ', ' ', ' ', ' ', ' ', ']', ' ','\\', ' ', ' ', // 50-5F
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '1', ' ', '4', '7', ' ', ' ', '1', // 60-6F
+    '0', '.', '2', '5', '6', '8', ' ', ' ', ' ', '+', '3', '-', '*', '9', ' ', ' ', // 70-7F
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // 80-8F
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // 90-9F
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // A0-AF
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // B0-BF
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // C0-CF
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // D0-DF
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // E0-EF
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // F0-FF
+};
+
+#endif
\ No newline at end of file