Revision 0:231dc8341ad9, committed 2009-11-12

Comitter:

simon

Date:

Thu Nov 12 00:51:56 2009 +0000

Commit message:

Changed in this revision

diff -r 000000000000 -r 231dc8341ad9 PS2ASCII.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PS2ASCII.cpp	Thu Nov 12 00:51:56 2009 +0000
@@ -0,0 +1,92 @@
+#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 == NULL)                        //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 == NULL)                            //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
+                continue;
+            case 0x80:
+                _numlock = !_numlock;
+                continue;
+            default:
+                break;
+        }
+        
+        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);
+        
+    }
+}
+    
+bool PS2ASCII::E0flag()
+{
+    return _E0flag;
+}
+
+bool PS2ASCII::numlock()
+{
+    return _numlock;
+}
+     
+     

diff -r 000000000000 -r 231dc8341ad9 PS2ASCII.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PS2ASCII.h	Thu Nov 12 00:51:56 2009 +0000
@@ -0,0 +1,47 @@
+#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();
+    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

diff -r 000000000000 -r 231dc8341ad9 PS2Kbd.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PS2Kbd.cpp	Thu Nov 12 00:51:56 2009 +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;
+
+}
+
+

diff -r 000000000000 -r 231dc8341ad9 PS2Kbd.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PS2Kbd.h	Thu Nov 12 00:51:56 2009 +0000
@@ -0,0 +1,41 @@
+#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
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '`', ' ', // 00-0F
+    ' ', ' ', 0x12, ' ', ' ', '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
+    ' ', ' ','\'', ' ', '[', '=', ' ', ' ', 0x58, 0x59, 0x5A, ']', ' ','\\', ' ', ' ', // 50-5F
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '1', ' ', '4', '7', ' ', ' ', '1', // 60-6F
+    '0', '.', '2', '5', '6', '8', 0x1B, 0x80, ' ', '+', '3', '-', '*', '9', ' ', ' ', // 70-7F
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // 80-8F
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // 90-9F
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // A0-AF
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // B0-BF
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // C0-CF
+    ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // D0-DF
+    0xE0, ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // E0-EF
+    NULL, ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // F0-FF
+};
+
+#endif
\ No newline at end of file

diff -r 000000000000 -r 231dc8341ad9 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Nov 12 00:51:56 2009 +0000
@@ -0,0 +1,15 @@
+#include "mbed.h"
+#include "PS2ASCII.h"
+
+PS2ASCII myKeyboard(p28, p26);
+DigitalOut LED(LED1);
+
+int main() {
+    while (1) {
+        unsigned char symbol = myKeyboard.getChar();
+        if(myKeyboard.E0flag() == true) {          //is the make code one or two bytes long?
+            printf(" E0 ");
+        }
+        printf("%c", symbol);
+    }
+}
\ No newline at end of file

diff -r 000000000000 -r 231dc8341ad9 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Nov 12 00:51:56 2009 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/737756e0b479