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kbd.cpp
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#include <Arduino.h>
#include <stdint.h>
#include <hardware.h>
#include <ps2_raw_kbd.h>
#include "kbd.h"
//#define DEBUGGING
// http://www.6502.org/users/andre/petindex/keyboards.html
// maps scan codes to pet rows/cols (graphics keyboard)
static const uint8_t scanmap[128] PROGMEM = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x00
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x08
0xff, 0xff, 0x80, 0xff, 0xff, 0x20, 0x00, 0xff, // 0x10
0xff, 0xff, 0x60, 0x50, 0x40, 0x30, 0x10, 0xff, // 0x18
0xff, 0x61, 0x70, 0x41, 0x21, 0x11, 0x01, 0xff, // 0x20
0xff, 0x92, 0x71, 0x51, 0x22, 0x31, 0x02, 0xff, // 0x28
0xff, 0x72, 0x62, 0x52, 0x42, 0x32, 0x25, 0xff, // 0x30
0xff, 0xff, 0x63, 0x43, 0x23, 0x03, 0x57, 0xff, // 0x38
0xff, 0x73, 0x53, 0x33, 0x24, 0x14, 0x04, 0xff, // 0x40
0xff, 0x96, 0x37, 0x44, 0x64, 0x34, 0x87, 0xff, // 0x48
0xff, 0xff, 0x12, 0xff, 0x91, 0x97, 0xff, 0xff, // 0x50
0xff, 0x85, 0x65, 0x82, 0xff, 0x01, 0xff, 0xff, // 0x58
0xff, 0x13, 0xff, 0xff, 0xff, 0x05, 0x17, 0xff, // 0x60
0xff, 0x66, 0xff, 0x46, 0x26, 0xff, 0xff, 0xff, // 0x68
0x86, 0x96, 0x76, 0x56, 0x47, 0x36, 0xff, 0x25, // 0x70
0xff, 0x77, 0x67, 0x87, 0x57, 0x27, 0xff, 0xff, // 0x78
};
// accessed by R-Shift
static const uint8_t shiftmap[128] PROGMEM = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x00
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x08
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0xff, // 0x10
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x10, 0xff, // 0x18
0xff, 0xff, 0xff, 0xff, 0xff, 0x11, 0xff, 0xff, // 0x20
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x02, 0xff, // 0x28
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x25, 0xff, // 0x30
0xff, 0xff, 0xff, 0xff, 0xff, 0x03, 0x57, 0xff, // 0x38
0xff, 0x93, 0xff, 0xff, 0xff, 0x14, 0x04, 0xff, // 0x40
0xff, 0x84, 0x74, 0xff, 0x54, 0xff, 0xff, 0xff, // 0x48
0xff, 0xff, 0x81, 0xff, 0xff, 0x77, 0xff, 0xff, // 0x50
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x58
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x60
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x68
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x70
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x78
};
// accessed by Ctrl
static const uint8_t ctrlmap[128] PROGMEM = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x00
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x08
0xff, 0xff, 0xff, 0xff, 0xff, 0x16, 0xff, 0xff, // 0x10
0xff, 0xff, 0xff, 0x06, 0xff, 0xff, 0xff, 0xff, // 0x18
0xff, 0x94, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x20
0xff, 0xff, 0xff, 0xff, 0x17, 0x90, 0xff, 0xff, // 0x28
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x30
0xff, 0xff, 0x65, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x38
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x40
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x48
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x50
0xff, 0xff, 0xff, 0x07, 0xff, 0xff, 0xff, 0xff, // 0x58
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x60
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x68
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x70
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, // 0x78
};
uint8_t kbd::_map(uint8_t scan) {
if (_shift)
return pgm_read_byte(shiftmap + scan);
if (_ctrl)
return pgm_read_byte(ctrlmap + scan);
return pgm_read_byte(scanmap + scan);
}
void kbd::_reset(uint8_t k) {
_rows[(k & 0xf0) >> 4] &= ~(1 << (k & 0x0f));
}
void kbd::up(uint8_t scan) {
DBG(printf("key up: %02x", scan));
DBG(println());
if (_ext) {
_ext = false;
switch(scan) {
case 0x69: // end
_reset(0x80);
case 0x6c: // home
_reset(0x06);
break;
case 0x75: // up
_reset(0x80);
case 0x72: // down
_reset(0x16);
break;
case 0x6b: // left
_reset(0x80);
case 0x74: // right
_reset(0x07);
break;
case 0x70: // ins
_reset(0x80);
case 0x71: // del
_reset(0x17);
break;
default:
if (scan < 0x80)
_reset(_map(scan));
break;
}
} else if (scan == 0x59) // R-Shift
_shift = false;
else if (is_ps2_ctrl(scan))
_ctrl = false;
else if (scan < 0x80)
_reset(_map(scan));
}
void kbd::_set(uint8_t k) {
_rows[(k & 0xf0) >> 4] |= 1 << (k & 0x0f);
}
void kbd::down(uint8_t scan) {
DBG(printf("key down: %02x", scan));
DBG(println());
if (scan == 0xe0)
_ext = true;
else if (_ext) {
_ext = false;
switch(scan) {
case 0x69: // end
_set(0x80);
case 0x6c: // home
_set(0x06);
break;
case 0x75: // up
_set(0x80);
case 0x72: // down
_set(0x16);
break;
case 0x6b: // left
_set(0x80);
case 0x74: // right
_set(0x07);
break;
case 0x70: // ins
_set(0x80);
case 0x71: // del
_set(0x17);
break;
default:
if (scan < 0x80)
_set(_map(scan));
}
} else if (scan == 0x59) { // R-Shift
// reset any depressed keys so they don't get stuck
reset();
_shift = true;
} else if (is_ps2_ctrl(scan)) {
reset();
_ctrl = true;
} else if (scan < 0x80)
_set(_map(scan));
}
void kbd::reset() {
for (int i = sizeof(_rows); i--; )
_rows[i] = 0;
_ctrl = false;
_shift = false;
}