You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
457 lines
11 KiB
457 lines
11 KiB
/*
|
|
* scan matrix
|
|
*/
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include <avr/io.h>
|
|
#include <util/delay.h>
|
|
#include "print.h"
|
|
#include "util.h"
|
|
#include "debug.h"
|
|
#include "ps2.h"
|
|
#include "usb_keyboard.h"
|
|
#include "matrix_skel.h"
|
|
|
|
|
|
#if (MATRIX_COLS > 16)
|
|
# error "MATRIX_COLS must not exceed 16"
|
|
#endif
|
|
#if (MATRIX_ROWS > 255)
|
|
# error "MATRIX_ROWS must not exceed 255"
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Matrix usage:
|
|
* "PS/2 Scan Codes Set 2" is assigned to 256(32x8)cells matrix.
|
|
* Hmm, It is very sparse and not efficient :(
|
|
*
|
|
* 8bit
|
|
* ---------
|
|
* 0| |
|
|
* :| XX | 00-7F for normal codes
|
|
* f|_________|
|
|
* 10| |
|
|
* :| E0 XX | 80-FF for E0-prefix codes(use (XX|0x80) as code)
|
|
* 1f| |
|
|
* ---------
|
|
* exceptions:
|
|
* 0x83: F8(normal code placed beyond 0x7F)
|
|
* 0xFE: PrintScreen
|
|
* 0xFF: Puause/Break
|
|
*/
|
|
#define _PRINT_SCREEN (0xFE)
|
|
#define _PAUSE_BREAK (0xFF)
|
|
#define _ROW(code) (code>>3)
|
|
#define _COL(code) (code&0x07)
|
|
|
|
static bool _matrix_is_modified = false;
|
|
|
|
// matrix state buffer(1:on, 0:off)
|
|
#if (MATRIX_COLS <= 8)
|
|
static uint8_t *matrix;
|
|
static uint8_t _matrix0[MATRIX_ROWS];
|
|
#else
|
|
static uint16_t *matrix;
|
|
static uint16_t _matrix0[MATRIX_ROWS];
|
|
#endif
|
|
|
|
#ifdef MATRIX_HAS_GHOST
|
|
static bool matrix_has_ghost_in_row(uint8_t row);
|
|
#endif
|
|
static void _matrix_make(uint8_t code);
|
|
static void _matrix_break(uint8_t code);
|
|
static void _ps2_reset(void);
|
|
static void _ps2_set_leds(uint8_t leds);
|
|
|
|
|
|
inline
|
|
uint8_t matrix_rows(void)
|
|
{
|
|
return MATRIX_ROWS;
|
|
}
|
|
|
|
inline
|
|
uint8_t matrix_cols(void)
|
|
{
|
|
return MATRIX_COLS;
|
|
}
|
|
|
|
void matrix_init(void)
|
|
{
|
|
print_enable = true;
|
|
ps2_host_init();
|
|
|
|
_ps2_reset();
|
|
|
|
// flush LEDs
|
|
_ps2_set_leds(1<<PS2_LED_NUM_LOCK);
|
|
_delay_ms(100);
|
|
_ps2_set_leds(1<<PS2_LED_NUM_LOCK|1<<PS2_LED_CAPS_LOCK);
|
|
_delay_ms(100);
|
|
_ps2_set_leds(1<<PS2_LED_NUM_LOCK|1<<PS2_LED_CAPS_LOCK|1<<PS2_LED_SCROLL_LOCK);
|
|
_delay_ms(300);
|
|
_ps2_set_leds(0x00);
|
|
|
|
// initialize matrix state: all keys off
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
|
|
matrix = _matrix0;
|
|
|
|
return;
|
|
}
|
|
|
|
uint8_t matrix_scan(void)
|
|
{
|
|
|
|
static enum {
|
|
INIT,
|
|
BREAK,
|
|
E0,
|
|
E0_F0,
|
|
// states for PrintScreen
|
|
E0_12,
|
|
E0_12_E0,
|
|
E0_F0_7C,
|
|
E0_F0_7C_E0,
|
|
E0_F0_7C_E0_F0,
|
|
// states for Pause/Break
|
|
E1,
|
|
E1_14,
|
|
E1_14_77,
|
|
E1_14_77_E1,
|
|
E1_14_77_E1_F0,
|
|
E1_14_77_E1_F0_14,
|
|
E1_14_77_E1_F0_14_F0,
|
|
} state = INIT;
|
|
|
|
|
|
_matrix_is_modified = false;
|
|
|
|
// Pause/Break off(PS/2 has no break for this key)
|
|
if (matrix_is_on(_ROW(_PAUSE_BREAK), _COL(_PAUSE_BREAK))) {
|
|
_matrix_break(_PAUSE_BREAK);
|
|
}
|
|
|
|
uint8_t code;
|
|
while ((code = ps2_host_recv())) {
|
|
switch (state) {
|
|
case INIT:
|
|
switch (code) {
|
|
case 0xE0: // 2byte make
|
|
state = E0;
|
|
break;
|
|
case 0xF0: // break code
|
|
state = BREAK;
|
|
break;
|
|
case 0xE1: // Pause/Break
|
|
state = E1;
|
|
break;
|
|
default: // normal key make
|
|
if (code < 0x80) {
|
|
_matrix_make(code);
|
|
} else {
|
|
debug("ps/2 unknow code: "); debug_hex(code); debug("\n");
|
|
}
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E0:
|
|
switch (code) {
|
|
case 0x12: // PrintScreen(make)
|
|
state = E0_12;
|
|
break;
|
|
case 0x7C: // PrintScreen(typematic)
|
|
// ignore
|
|
state = INIT;
|
|
break;
|
|
case 0xF0: // E0 break
|
|
state = E0_F0;
|
|
break;
|
|
default: // E0 make
|
|
if (code < 0x80) {
|
|
_matrix_make(code|0x80);
|
|
} else {
|
|
debug("ps/2 unknow code: "); debug_hex(code); debug("\n");
|
|
}
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case BREAK:
|
|
if (code < 0x80) {
|
|
_matrix_break(code);
|
|
} else {
|
|
debug("ps/2 unknow code: "); debug_hex(code); debug("\n");
|
|
}
|
|
state = INIT;
|
|
break;
|
|
case E0_F0: // E0 break
|
|
switch (code) {
|
|
case 0x7C:
|
|
state = E0_F0_7C;
|
|
break;
|
|
default:
|
|
if (code < 0x80) {
|
|
_matrix_break(code|0x80);
|
|
} else {
|
|
debug("ps/2 unknow code: "); debug_hex(code); debug("\n");
|
|
}
|
|
state = INIT;
|
|
}
|
|
break;
|
|
/* PrintScreen(make) */
|
|
case E0_12:
|
|
switch (code) {
|
|
case 0xE0:
|
|
state = E0_12_E0;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E0_12_E0:
|
|
switch (code) {
|
|
case 0x7C:
|
|
_matrix_make(_PRINT_SCREEN);
|
|
state = INIT;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
/* PrintScreen(break) */
|
|
case E0_F0_7C:
|
|
switch (code) {
|
|
case 0xE0:
|
|
state = E0_F0_7C_E0;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E0_F0_7C_E0:
|
|
switch (code) {
|
|
case 0xF0:
|
|
state = E0_F0_7C_E0_F0;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E0_F0_7C_E0_F0:
|
|
switch (code) {
|
|
case 0x12:
|
|
_matrix_break(_PRINT_SCREEN);
|
|
state = INIT;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
/* Pause/Break */
|
|
case E1:
|
|
switch (code) {
|
|
case 0x14:
|
|
state = E1_14;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E1_14:
|
|
switch (code) {
|
|
case 0x77:
|
|
state = E1_14_77;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E1_14_77:
|
|
switch (code) {
|
|
case 0xE1:
|
|
state = E1_14_77_E1;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E1_14_77_E1:
|
|
switch (code) {
|
|
case 0xF0:
|
|
state = E1_14_77_E1_F0;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E1_14_77_E1_F0:
|
|
switch (code) {
|
|
case 0x14:
|
|
state = E1_14_77_E1_F0_14;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E1_14_77_E1_F0_14:
|
|
switch (code) {
|
|
case 0xF0:
|
|
state = E1_14_77_E1_F0_14_F0;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
case E1_14_77_E1_F0_14_F0:
|
|
switch (code) {
|
|
case 0x77:
|
|
_matrix_make(_PAUSE_BREAK);
|
|
state = INIT;
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
break;
|
|
default:
|
|
state = INIT;
|
|
}
|
|
}
|
|
|
|
static uint8_t prev_leds = 0;
|
|
if (prev_leds != usb_keyboard_leds) {
|
|
uint8_t leds = 0;
|
|
if (usb_keyboard_leds&(1<<USB_LED_SCROLL_LOCK))
|
|
leds |= (1<<PS2_LED_SCROLL_LOCK);
|
|
if (usb_keyboard_leds&(1<<USB_LED_NUM_LOCK))
|
|
leds |= (1<<PS2_LED_NUM_LOCK);
|
|
if (usb_keyboard_leds&(1<<USB_LED_CAPS_LOCK))
|
|
leds |= (1<<PS2_LED_CAPS_LOCK);
|
|
|
|
_ps2_set_leds(leds);
|
|
prev_leds = usb_keyboard_leds;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
bool matrix_is_modified(void)
|
|
{
|
|
return _matrix_is_modified;
|
|
}
|
|
|
|
inline
|
|
bool matrix_has_ghost(void)
|
|
{
|
|
#ifdef MATRIX_HAS_GHOST
|
|
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
|
if (matrix_has_ghost_in_row(i))
|
|
return true;
|
|
}
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
inline
|
|
bool matrix_is_on(uint8_t row, uint8_t col)
|
|
{
|
|
return (matrix[row] & (1<<col));
|
|
}
|
|
|
|
inline
|
|
#if (MATRIX_COLS <= 8)
|
|
uint8_t matrix_get_row(uint8_t row)
|
|
#else
|
|
uint16_t matrix_get_row(uint8_t row)
|
|
#endif
|
|
{
|
|
return matrix[row];
|
|
}
|
|
|
|
void matrix_print(void)
|
|
{
|
|
#if (MATRIX_COLS <= 8)
|
|
print("\nr/c 01234567\n");
|
|
#else
|
|
print("\nr/c 0123456789ABCDEF\n");
|
|
#endif
|
|
for (uint8_t row = 0; row < matrix_rows(); row++) {
|
|
phex(row); print(": ");
|
|
#if (MATRIX_COLS <= 8)
|
|
pbin_reverse(matrix_get_row(row));
|
|
#else
|
|
pbin_reverse16(matrix_get_row(row));
|
|
#endif
|
|
#ifdef MATRIX_HAS_GHOST
|
|
if (matrix_has_ghost_in_row(row)) {
|
|
print(" <ghost");
|
|
}
|
|
#endif
|
|
print("\n");
|
|
}
|
|
}
|
|
|
|
uint8_t matrix_key_count(void)
|
|
{
|
|
uint8_t count = 0;
|
|
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
|
#if (MATRIX_COLS <= 8)
|
|
count += bitpop(matrix[i]);
|
|
#else
|
|
count += bitpop16(matrix[i]);
|
|
#endif
|
|
}
|
|
return count;
|
|
}
|
|
|
|
#ifdef MATRIX_HAS_GHOST
|
|
inline
|
|
static bool matrix_has_ghost_in_row(uint8_t row)
|
|
{
|
|
// no ghost exists in case less than 2 keys on
|
|
if (((matrix[row] - 1) & matrix[row]) == 0)
|
|
return false;
|
|
|
|
// ghost exists in case same state as other row
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
|
|
if (i != row && (matrix[i] & matrix[row]) == matrix[row])
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
|
|
inline
|
|
static void _matrix_make(uint8_t code)
|
|
{
|
|
if (!matrix_is_on(_ROW(code), _COL(code))) {
|
|
matrix[_ROW(code)] |= 1<<_COL(code);
|
|
_matrix_is_modified = true;
|
|
}
|
|
}
|
|
|
|
inline
|
|
static void _matrix_break(uint8_t code)
|
|
{
|
|
if (matrix_is_on(_ROW(code), _COL(code))) {
|
|
matrix[_ROW(code)] &= ~(1<<_COL(code));
|
|
_matrix_is_modified = true;
|
|
}
|
|
}
|
|
|
|
static void _ps2_reset(void)
|
|
{
|
|
ps2_host_send(0xFF);
|
|
ps2_host_recv(); // 0xFA
|
|
ps2_host_recv(); // 0xAA
|
|
_delay_ms(1000);
|
|
}
|
|
|
|
static void _ps2_set_leds(uint8_t leds)
|
|
{
|
|
ps2_host_send(0xED);
|
|
ps2_host_recv(); // 0xFA
|
|
ps2_host_send(leds);
|
|
ps2_host_recv(); // 0xFA
|
|
}
|