Jordan Earls
A project to implement a console using the Mbed using VGA for video output and a PS/2 keyboard for the input. The eventual goal is to also include tools for managing SD cards, and a semi-self-hosting programming environment.
Dependencies: PS2_MbedConsole fastlib SDFileSystem vga640x480g_mbedconsole lightvm mbed
MbedConsole is a cool little project to have a self-contained computer all on an Mbed. So far it has VGA and PS/2 support and can stand alone without a computer powering it. Next planned features are SD card support and a lightweight programmable VM complete with a file editor and self-hosted assembler.
You can view additional details about it at http://earlz.net/tags/mbedconsole
Diff: keyboard.cpp
- Revision:
- 11:fede136943a9
- Parent:
- 10:bda85442b674
- Child:
- 12:3ee3062cc11c
--- a/keyboard.cpp Wed Sep 26 05:22:44 2012 +0000
+++ b/keyboard.cpp Fri Sep 28 04:03:54 2012 +0000
@@ -9,120 +9,194 @@
#define KBD_BUFFER_SIZE 128
//key defines
-#define LSHIFT_KEY 42
-#define RSHIFT_KEY 54
-#define CTRL_KEY 29
-#define ALT_KEY 56
-#define CAPS_KEY 58
-#define NUM_KEY 69
-#define SCROLL_KEY 70
-#define F_BASE_KEY 59 //59 is F1, 60 is F2, and so on until F10
-#define HOME_KEY 71
-#define UP_KEY 72
-#define PAGE_UP_KEY 73
-#define LEFT_KEY 75
-#define RIGHT_KEY 77
-#define END_KEY 79
-#define DOWN_KEY 80
-#define PAGE_DOWN_KEY 81
-#define INSERT_KEY 82
-#define DEL_KEY 83
-#define F11_KEY 87
-#define F12_KEY 89
+#define LSHIFT_KEY 0x12
+#define RSHIFT_KEY 0x59
+
+#define CTRL_KEY 0xF3
+#define ALT_KEY 0xF4
+#define CAPS_KEY 0x58
+#define NUM_KEY 0x77
+#define SCROLL_KEY 0xF7
+//#define F_BASE_KEY 0xFF //59 is F1, 60 is F2, and so on until F10
+#define HOME_KEY 0xFF
+#define UP_KEY 0xFF
+#define PAGE_UP_KEY 0xFF
+#define LEFT_KEY 0xFF
+#define RIGHT_KEY 0xFF
+#define END_KEY 0xFF
+#define DOWN_KEY 0xFF
+#define PAGE_DOWN_KEY 0xFF
+#define INSERT_KEY 0xFF
+#define DEL_KEY 0xFF
+#define F11_KEY 0xFF
+#define F12_KEY 0xFF
#define SCROLL_LED 1
#define NUM_LED 2
#define CAPS_LED 4
-const char kbdus[128] =
+const char kbdus[0x84] =
{
- 0, 27, '1', '2', '3', '4', '5', '6', '7', '8', /* 9 */
- '9', '0', '-', '=', '\b', /* Backspace */
- '\t', /* Tab */
- 'q', 'w', 'e', 'r', /* 19 */
- 't', 'y', 'u', 'i', 'o', 'p', '[', ']', '\n', /* Enter key */
- 0, /* 29 - Control */
- 'a', 's', 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', /* 39 */
- '\'', '`', 0, /* Left shift */
- '\\', 'z', 'x', 'c', 'v', 'b', 'n', /* 49 */
- 'm', ',', '.', '/', 0, /* Right shift */
- '*',
- 0, /* Alt */
- ' ', /* Space bar */
- 0, /* Caps lock */
- 0, /* 59 - F1 key ... > */
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, /* < ... F10 */
- 0, /* 69 - Num lock*/
- 0, /* Scroll Lock */
- 0, /* Home key */
- 0, /* Up Arrow */
- 0, /* Page Up */
- '-',
- 0, /* Left Arrow */
- 0,
- 0, /* Right Arrow */
- '+',
- 0, /* 79 - End key*/
- 0, /* Down Arrow */
- 0, /* Page Down */
- 0, /* Insert Key */
- 0, /* Delete Key */
- 0, 0, 0,
- 0, /* F11 Key */
- 0, /* F12 Key */
- 0, /* All other keys are undefined */
+ 0,
+ 0, //1 F9
+ 0, //2 ?
+ 0, //3 f5
+ 0, //4 f3
+ 0, //5 F1
+ 0, //6 F2
+ 0, //7 F12
+ 0, //8 ?
+ 0, //9 F10
+ 0, //A F8
+ 0, //B F6
+ 0, //C F4
+ '\t',
+ '`',
+ 0, //F ?
+ 0, //10 ?
+ 0, //11 L alt
+ 0, //L shift
+ 0, //13 ?
+ 0, //14 L CTRL
+ 'q', '1',
+ 0, 0, 0, //17-19 ?
+ 'z', 's', 'a', 'w', '2',
+ 0, 0, //1F-20 ?
+ 'c', 'x', 'd', 'e', '4', '3',
+ 0, 0, //27-28 ?
+ ' ', 'v', 'f', 't', 'r', '5',
+ 0, 0, //2F-30 ?
+ 'n', 'b', 'h', 'g', 'y', '6',
+ 0, 0, 0, //37-39 ?
+ 'm','j', 'u', '7', '8',
+ 0, 0, //3F-40 ?
+ ',', 'k', 'i', 'o', '0', '9',
+ 0, 0, //47-48 ?
+ '.', '/', 'l', ';', 'p', '-',
+ 0, 0, 0, //4f-51 ?
+ '\'',
+ 0, //53 ?
+ '[', '=',
+ 0, 0, //56-57 ?
+ 0, //58 caplock
+ 0, //59 R shift
+ '\n', //5A enter
+ ']',
+ 0, //5C ?
+ '\\',
+ 0, 0, 0, 0, 0, 0, 0, 0, //5E-65 ?
+ '\b', //backspace
+ 0, 0, //67-68
+ 0, //69 End 1
+ 0, //6a ?
+ '4', //6b left 4
+ 0, //6c home 7
+ 0, 0, 0, //6d-6f ?
+ '0', //70 ins 0
+ 0, //71 del .
+ '2', //72 down 2
+ '5', //73 5
+ '6', //74 right 6
+ '8', //75 up 8
+ 27, //76 esc
+ 0, //77 numlock
+ 0, //78 f11
+ '+', //79 +
+ '3', //7A pagedown 3
+ '-', //7B
+ '*', //7C
+ '9', //7D pageup 9
+ '0', //7E scroll lock
+ 0, 0, 0, 0, //7F-82 ?
+ 0, //83 F7
};
-const char kbdus_caps[128] =
+
+const char kbdus_caps[0x84] =
{
- 0, 27, '!', '@', '#', '$', '%', '^', '&', '*', /* 9 */
- '(', ')', '_', '+', '\b', /* Backspace */
- '\t', /* Tab */
- 'Q', 'W', 'E', 'R', /* 19 */
- 'T', 'Y', 'U', 'I', 'O', 'P', '{', '}', '\n', /* Enter key */
- 0, /* 29 - Control */
- 'A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', /* 39 */
- '"', '~', 0, /* Left shift */
- '|', 'Z', 'X', 'C', 'V', 'B', 'N', /* 49 */
- 'M', '<', '>', '?', 0, /* Right shift */
- '*',
- 0, /* Alt */
- ' ', /* Space bar */
- 0, /* Caps lock */
- 0, /* 59 - F1 key ... > */
- 0, 0, 0, 0, 0, 0, 0, 0,
- 0, /* < ... F10 */
- 0, /* 69 - Num lock*/
- 0, /* Scroll Lock */
- 0, /* Home key */
- 0, /* Up Arrow */
- 0, /* Page Up */
- '-',
- 0, /* Left Arrow */
- 0,
- 0, /* Right Arrow */
- '+',
- 0, /* 79 - End key*/
- 0, /* Down Arrow */
- 0, /* Page Down */
- 0, /* Insert Key */
- 0, /* Delete Key */
- 0, 0, 0,
- 0, /* F11 Key */
- 0, /* F12 Key */
- 0, /* All other keys are undefined */
+ 0,
+ 0, //1 F9
+ 0, //2 ?
+ 0, //3 f5
+ 0, //4 f3
+ 0, //5 F1
+ 0, //6 F2
+ 0, //7 F12
+ 0, //8 ?
+ 0, //9 F10
+ 0, //A F8
+ 0, //B F6
+ 0, //C F4
+ '\t',
+ '~',
+ 0, //F ?
+ 0, //10 ?
+ 0, //11 L alt
+ 0, //L shift
+ 0, //13 ?
+ 0, //14 L CTRL
+ 'Q', '!',
+ 0, 0, 0, //17-19 ?
+ 'Z', 'S', 'A', 'W', '@',
+ 0, 0, //1F-20 ?
+ 'C', 'X', 'D', 'E', '#', '$',
+ 0, 0, //27-28 ?
+ ' ', 'V', 'F', 'T', 'R', '%',
+ 0, 0, //2F-30 ?
+ 'N', 'B', 'H', 'G', 'Y', '^',
+ 0, 0, 0, //37-39 ?
+ 'M','J', 'U', '&', '*',
+ 0, 0, //3F-40 ?
+ '<', 'K', 'I', 'O', ')', '(',
+ 0, 0, //47-48 ?
+ '>', '?', 'L', ':', 'P', '_',
+ 0, 0, 0, //4f-51 ?
+ '\"',
+ 0, //53 ?
+ '{', '+',
+ 0, 0, //56-57 ?
+ 0, //58 caplock
+ 0, //59 R shift
+ '\n', //5A enter
+ '}',
+ 0, //5C ?
+ '|',
+ 0, 0, 0, 0, 0, 0, 0, 0, //5E-65 ?
+ '\b', //backspace
+ 0, 0, //67-68
+ 0, //69 End 1
+ 0, //6a ?
+ '4', //6b left 4
+ 0, //6c home 7
+ 0, 0, 0, //6d-6f ?
+ '0', //70 ins 0
+ 0, //71 del .
+ '2', //72 down 2
+ '5', //73 5
+ '6', //74 right 6
+ '8', //75 up 8
+ 27, //76 esc
+ 0, //77 numlock
+ 0, //78 f11
+ '+', //79 +
+ '3', //7A pagedown 3
+ '-', //7B
+ '*', //7C
+ '9', //7D pageup 9
+ '0', //7E scroll lock
+ 0, 0, 0, 0, //7F-82 ?
+ 0, //83 F7
};
typedef struct {
- unsigned char caps;
- unsigned char shift;
- unsigned char scroll;
- unsigned char num;
- unsigned char ctrl;
- unsigned char alt;
+ unsigned char caps;
+ unsigned char shift;
+ unsigned char scroll;
+ unsigned char num;
+ unsigned char ctrl;
+ unsigned char alt;
}
shift_locks; /*for simplicity and speed*/
@@ -130,8 +204,8 @@
typedef struct {
- uint16_t scancode;
- uint8_t asci;
+ uint16_t scancode;
+ uint8_t asci;
}kbd_key;
@@ -149,12 +223,12 @@
void keyboard_init()
{
keys=(kbd_key*)malloc(256*sizeof(kbd_key));
- kbd_shifts.shift=0;
- kbd_shifts.caps=0;
- kbd_shifts.num=0;
- kbd_shifts.scroll=0;
- kbd_shifts.ctrl=0;
- kbd_shifts.alt=0;
+ kbd_shifts.shift=0;
+ kbd_shifts.caps=0;
+ kbd_shifts.num=0;
+ kbd_shifts.scroll=0;
+ kbd_shifts.ctrl=0;
+ kbd_shifts.alt=0;
ps2_kb_init=new PS2KB_INIT(KEYBOARD_CLOCKPIN, KEYBOARD_DATAPIN);
ps2_kb=new PS2KB(KEYBOARD_CLOCKPIN, KEYBOARD_DATAPIN, (KeyboardCallback) &keyboard_callback);
}
@@ -175,137 +249,140 @@
of these keys to where not all of them are stored, and they are only stored when needed**/
int kbd_PutBuffer(uint16_t scan,uint8_t asci){
- keys[current_key].scancode=scan;
- keys[current_key].asci=asci;
- current_key++;
- pending_key++;;
- return 0;
+ keys[current_key].scancode=scan;
+ keys[current_key].asci=asci;
+ current_key++;
+ pending_key++;;
+ return 0;
}
kbd_key kbd_PopBuffer(){
- kbd_key k;
- while(pending_key==0){
- //hlt();
- //fill in busy code here
- }
-
- k.scancode=keys[key_got].scancode;
- k.asci=keys[key_got].asci;
- pending_key--;
- key_got++;
- return k;
+ kbd_key k;
+ while(pending_key==0){
+ //hlt();
+ //fill in busy code here
+ }
+
+ k.scancode=keys[key_got].scancode;
+ k.asci=keys[key_got].asci;
+ pending_key--;
+ key_got++;
+ return k;
}
uint8_t kbd_GetKey(){ //this will just return the asci code
- kbd_key k;
- k.asci=0;
- while(k.asci==0){
- k=kbd_PopBuffer();
- }
- return k.asci;
+ kbd_key k;
+ k.asci=0;
+ while(k.asci==0){
+ k=kbd_PopBuffer();
+ }
+ return k.asci;
}
void kbd_update_leds(uint8_t status){
- uint8_t tmp;
- //TODO
- /*while((inportb(0x64)&2)!=0){}
- outportb(0x60,0xED);
-
- while((inportb(0x64)&2)!=0){}
- outportb(0x60,status);
- */
+ uint8_t tmp;
+ //TODO
+ /*while((inportb(0x64)&2)!=0){}
+ outportb(0x60,0xED);
+
+ while((inportb(0x64)&2)!=0){}
+ outportb(0x60,status);
+ */
}
int kbd_DoShifts(uint8_t scan){
- switch(scan){
- case RSHIFT_KEY:
- kbd_shifts.shift++;
- break;
- case LSHIFT_KEY:
- kbd_shifts.shift++;
- break;
- case CTRL_KEY:
- kbd_shifts.ctrl++;
- break;
- case ALT_KEY:
- kbd_shifts.alt++;
- break;
- case CAPS_KEY:
- led_status^=CAPS_LED;
- kbd_update_leds(led_status);
- kbd_shifts.caps^=1;
- break;
- case NUM_KEY:
- led_status^=NUM_LED;
- kbd_update_leds(led_status);
- kbd_shifts.num^=1;
- break;
- case SCROLL_KEY:
- led_status^=SCROLL_LED;
- kbd_update_leds(led_status);
- kbd_shifts.scroll^=1;
- break;
- default:
- return 0;
- break;
- }
- return 1;
+ switch(scan){
+ case RSHIFT_KEY:
+ kbd_shifts.shift++;
+ break;
+ case LSHIFT_KEY:
+ kbd_shifts.shift++;
+ break;
+ case CTRL_KEY:
+ kbd_shifts.ctrl++;
+ break;
+ case ALT_KEY:
+ kbd_shifts.alt++;
+ break;
+ case CAPS_KEY:
+ led_status^=CAPS_LED;
+ kbd_update_leds(led_status);
+ kbd_shifts.caps^=1;
+ break;
+ case NUM_KEY:
+ led_status^=NUM_LED;
+ kbd_update_leds(led_status);
+ kbd_shifts.num^=1;
+ break;
+ case SCROLL_KEY:
+ led_status^=SCROLL_LED;
+ kbd_update_leds(led_status);
+ kbd_shifts.scroll^=1;
+ break;
+ default:
+ return 0;
+ break;
+ }
+ return 1;
}
int kbd_DoUnshifts(uint8_t scan){
- switch(scan){
- case RSHIFT_KEY:
- kbd_shifts.shift--;
- break;
- case LSHIFT_KEY:
- kbd_shifts.shift--;
- break;
- case CTRL_KEY:
- kbd_shifts.ctrl--;
- break;
- case ALT_KEY:
- kbd_shifts.alt--;
- break;
- case CAPS_KEY:
- //kbd_shifts.caps=0;
- break;
- case NUM_KEY:
- //kbd_shifts.num=0;
- break;
- case SCROLL_KEY:
- //kbd_shifts.scroll=0;
- break;
- default:
- return 0;
- break;
- }
- return 1;
+ switch(scan){
+ case RSHIFT_KEY:
+ kbd_shifts.shift--;
+ break;
+ case LSHIFT_KEY:
+ kbd_shifts.shift--;
+ break;
+ case CTRL_KEY:
+ kbd_shifts.ctrl--;
+ break;
+ case ALT_KEY:
+ kbd_shifts.alt--;
+ break;
+ case CAPS_KEY:
+ //kbd_shifts.caps=0;
+ break;
+ case NUM_KEY:
+ //kbd_shifts.num=0;
+ break;
+ case SCROLL_KEY:
+ //kbd_shifts.scroll=0;
+ break;
+ default:
+ return 0;
+ break;
+ }
+ return 1;
}
volatile bool expecting_break=false;
void keyboard_callback(PS2KB kb, uint8_t val) //this is called from interrupt! Must be fast
{
- //stopints();
+ //stopints();
if(expecting_break){
- val^=0x80;
+ //val^=0xF0;
kbd_DoUnshifts(val);
expecting_break=false;
}else{
- if(val>=0x80){
- expecting_break=true;
- }else{
- if(kbd_DoShifts(val)==0){ //if not a shift-type key
-
- if ((kbd_shifts.caps^kbd_shifts.shift)==1) {
- kbd_PutBuffer(val,kbdus_caps[val]);
- }else{
- kbd_PutBuffer(val,kbdus[val]);
- }
- }
- }
- }
+ if(val>=0xF0){
+ expecting_break=true;
+ }else{
+ //add check for 0x84 to make sure we don't go over our keymap
+ if(val<=0x84 && kbd_DoShifts(val)==0){ //if not a shift-type key
+
+ if ((kbd_shifts.caps^kbd_shifts.shift)==1) {
+ kbd_PutBuffer(val,kbdus_caps[val]);
+ }else{
+ kbd_PutBuffer(val,kbdus[val]);
+ }
+ }
+ }
+ }
}
+
+