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Exceptional handling for PS/2 scan code set 2

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changed names which does not comply to C spec.(underscore prefix names)
example_keyboards
tmk 14 years ago
parent a28a2a6a5e
commit 23c686ad46
2 changed files with 150 additions and 116 deletions
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6
ps2_usb/keymap.c
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@ -17,7 +17,7 @@
// Convert physical keyboard layout to matrix array. // Convert physical keyboard layout to matrix array.
// This is a macro to define keymap easily in keyboard layout form. // This is a macro to define keymap easily in keyboard layout form.
#define KEYMAP( \ #define KEYMAP( \
K76, K05,K06,K04,K0C, K03,K0B,K83,K0A, K01,K09,K78,K07, KFE,K7E,KFF, KB7,KBF,KDE, \ K76, K05,K06,K04,K0C, K03,K0B,K83,K0A, K01,K09,K78,K07, KFC,K7E,KFE, KB7,KBF,KDE, \
K0E,K16,K1E,K26,K25,K2E,K36,K3D,K3E,K46,K45,K4E,K55,K66, KF0,KEC,KFD, K77,KCA,K7C,K7B, \ K0E,K16,K1E,K26,K25,K2E,K36,K3D,K3E,K46,K45,K4E,K55,K66, KF0,KEC,KFD, K77,KCA,K7C,K7B, \
K0D,K15,K1D,K24,K2D,K2C,K35,K3C,K43,K44,K4D,K54,K5B,K5D, KF1,KE9,KFA, K6C,K75,K7D, \ K0D,K15,K1D,K24,K2D,K2C,K35,K3C,K43,K44,K4D,K54,K5B,K5D, KF1,KE9,KFA, K6C,K75,K7D, \
K58,K1C,K1B,K23,K2B,K34,K33,K3B,K42,K4B,K4C,K52, K5A, K6B,K73,K74,K79, \ K58,K1C,K1B,K23,K2B,K34,K33,K3B,K42,K4B,K4C,K52, K5A, K6B,K73,K74,K79, \
@ -55,7 +55,7 @@
{ KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO }, \ { KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO }, \
{ KB_NO, KB_##KE9, KB_NO, KB_##KEB, KB_##KEC, KB_NO, KB_NO, KB_NO }, \ { KB_NO, KB_##KE9, KB_NO, KB_##KEB, KB_##KEC, KB_NO, KB_NO, KB_NO }, \
{ KB_##KF0, KB_##KF1, KB_##KF2, KB_NO, KB_##KF4, KB_##KF5, KB_NO, KB_NO }, \ { KB_##KF0, KB_##KF1, KB_##KF2, KB_NO, KB_##KF4, KB_##KF5, KB_NO, KB_NO }, \
{ KB_NO, KB_NO, KB_##KFA, KB_NO, KB_NO, KB_##KFD, KB_##KFE, KB_##KFF }, \ { KB_NO, KB_NO, KB_##KFA, KB_NO, KB_##KFC, KB_##KFD, KB_##KFE, KB_NO }, \
} }
@ -161,7 +161,7 @@ static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
ESC, F1, F2, F3, F4, F5, F6, F7, F8, F8, F10, F11, F12, BSPC, INS, HOME,PGUP, NLCK,PSLS,PAST,PMNS, ESC, F1, F2, F3, F4, F5, F6, F7, F8, F8, F10, F11, F12, BSPC, INS, HOME,PGUP, NLCK,PSLS,PAST,PMNS,
TAB, NO, NO, NO, NO, NO, HOME,PGDN,PGUP,END, NO, NO, NO, BSLS, DEL, END, PGDN, P7, P8, P9, TAB, NO, NO, NO, NO, NO, HOME,PGDN,PGUP,END, NO, NO, NO, BSLS, DEL, END, PGDN, P7, P8, P9,
CAPS,NO, NO, NO, NO, NO, LEFT,DOWN,UP, RGHT,NO, NO, ENT, P4, P5, P6, PPLS, CAPS,NO, NO, NO, NO, NO, LEFT,DOWN,UP, RGHT,NO, NO, ENT, P4, P5, P6, PPLS,
LSFT,VOLD,VOLU,MUTE,NO, NO, HOME,PGUP,PGDN,END, FN1, RSFT, UP, P1, P2, P3, LSFT,VOLD,VOLU,MUTE,NO, NO, HOME,PGDN,PGUP,END, FN1, RSFT, UP, P1, P2, P3,
LCTL,LGUI,LALT, SPC, RALT,RGUI,APP, RCTL, LEFT,DOWN,RGHT, P0, PDOT,PENT LCTL,LGUI,LALT, SPC, RALT,RGUI,APP, RCTL, LEFT,DOWN,RGHT, P0, PDOT,PENT
), ),
}; };

260
ps2_usb/matrix.c
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@ -29,40 +29,39 @@
* 8bit * 8bit
* --------- * ---------
* 0| | * 0| |
* :| XX | 00-7F for normal codes * :| XX | 00-7F for normal codes(without E0-prefix)
* f|_________| * f|_________|
* 10| | * 10| |
* :| E0 XX | 80-FF for E0-prefix codes(use (XX|0x80) as code) * :| E0 XX | 80-FF for E0-prefix codes(use (XX|0x80) as code)
* 1f| | * 1f| |
* --------- * ---------
* exceptions: * exceptions:
* 0x83: F8(normal code placed beyond 0x7F) * 83: F8[0x83](normal codes but > 0x7F)
* 0xFE: PrintScreen * FC: PrintScreen[E0 7C or 84]
* 0xFF: Puause/Break * FE: Puause
*/ */
#define _PRINT_SCREEN (0xFE) #define F8 (0x83)
#define _PAUSE_BREAK (0xFF) #define PRINT_SCREEN (0xFC)
#define _ROW(code) (code>>3) #define PAUSE (0xFE)
#define _COL(code) (code&0x07) #define ROW(code) (code>>3)
#define COL(code) (code&0x07)
static bool _matrix_is_modified = false; static bool is_modified = false;
// matrix state buffer(1:on, 0:off) // matrix state buffer(1:on, 0:off)
#if (MATRIX_COLS <= 8) #if (MATRIX_COLS <= 8)
static uint8_t *matrix; static uint8_t matrix[MATRIX_ROWS];
static uint8_t _matrix0[MATRIX_ROWS];
#else #else
static uint16_t *matrix; static uint16_t matrix[MATRIX_ROWS];
static uint16_t _matrix0[MATRIX_ROWS];
#endif #endif
#ifdef MATRIX_HAS_GHOST #ifdef MATRIX_HAS_GHOST
static bool matrix_has_ghost_in_row(uint8_t row); static bool matrix_has_ghost_in_row(uint8_t row);
#endif #endif
static void _matrix_make(uint8_t code); static void matrix_make(uint8_t code);
static void _matrix_break(uint8_t code); static void matrix_break(uint8_t code);
static void _ps2_reset(void); static void ps2_reset(void);
static void _ps2_set_leds(uint8_t leds); static void ps2_set_leds(uint8_t leds);
inline inline
@ -82,38 +81,96 @@ void matrix_init(void)
print_enable = true; print_enable = true;
ps2_host_init(); ps2_host_init();
_ps2_reset(); ps2_reset();
// flush LEDs // flush LEDs
_ps2_set_leds(1<<PS2_LED_NUM_LOCK); ps2_set_leds(1<<PS2_LED_NUM_LOCK);
_delay_ms(100); _delay_ms(100);
_ps2_set_leds(1<<PS2_LED_NUM_LOCK|1<<PS2_LED_CAPS_LOCK); ps2_set_leds(1<<PS2_LED_NUM_LOCK|1<<PS2_LED_CAPS_LOCK);
_delay_ms(100); _delay_ms(100);
_ps2_set_leds(1<<PS2_LED_NUM_LOCK|1<<PS2_LED_CAPS_LOCK|1<<PS2_LED_SCROLL_LOCK); ps2_set_leds(1<<PS2_LED_NUM_LOCK|1<<PS2_LED_CAPS_LOCK|1<<PS2_LED_SCROLL_LOCK);
_delay_ms(300); _delay_ms(300);
_ps2_set_leds(0x00); ps2_set_leds(0x00);
// initialize matrix state: all keys off // initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00; for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
matrix = _matrix0;
return; return;
} }
/*
* PS/2 Scan Code Set 2: Exceptional Handling
*
* There are several keys to be handled exceptionally.
* The scan code for these keys are varied or prefix/postfix'd
* depending on modifier key state.
*
* References:
* http://www.microsoft.com/whdc/archive/scancode.mspx
* http://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/scancode.doc
*
*
* Insert, Delete, Home, End, PageUp, PageDown, Up, Down, Right, Left:
* Num Lock: off
* modifiers | make | break
* ----------+---------------------------+----------------------
* Ohter | <make> | <break>
* LShift | E0 F0 12 <make> | <break> E0 12
* RShift | E0 F0 59 <make> | <break> E0 59
* L+RShift | E0 F0 12 E0 F0 59 <make> | <break> E0 59 E0 12
*
* Num Lock: on
* modifiers | make | break
* ----------+---------------------------+----------------------
* Other | E0 12 <make> | <break> E0 F0 12
* Shift'd | <make> | <break>
*
* Handling: ignore these prefix/postfix codes
*
*
* Keypad-/:
* modifiers | make | break
* ----------+---------------------------+----------------------
* Ohter | <make> | <break>
* LShift | E0 F0 12 <make> | <break> E0 12
* RShift | E0 F0 59 <make> | <break> E0 59
* L+RShift | E0 F0 12 E0 F0 59 <make> | <break> E0 59 E0 12
*
* Handling: ignore these prefix/postfix codes
*
*
* PrintScreen:
* With hoding down modifiers, the scan code is sent as following:
*
* modifiers | make | break
* ----------+--------------+-----------------------------------
* Other | E0 12 E0 7C | E0 F0 7C E0 F0 12
* Shift'd | E0 7C | E0 F0 7C
* Control'd | E0 7C | E0 F0 7C
* Alt'd | 84 | F0 84
*
* Handling: ignore prefix/postfix codes and treat both scan code
* E0 7C and 84 as PrintScreen.
*
* Pause:
* With hoding down modifiers, the scan code is sent as following:
*
* modifiers | make(no break code)
* ----------+--------------------------------------------------
* no mods | E1 14 77 E1 F0 14 F0 77
* Control'd | E0 7E E0 F0 7E
*
* Handling: treat these two code sequence as Pause
*
*/
uint8_t matrix_scan(void) uint8_t matrix_scan(void)
{ {
static enum { static enum {
INIT, INIT,
BREAK, F0,
E0, E0,
E0_F0, 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 // states for Pause/Break
E1, E1,
E1_14, E1_14,
@ -125,15 +182,16 @@ uint8_t matrix_scan(void)
} state = INIT; } state = INIT;
_matrix_is_modified = false; is_modified = false;
// Pause/Break off(PS/2 has no break for this key) // Pause/Break off(PS/2 has no break for this key)
if (matrix_is_on(_ROW(_PAUSE_BREAK), _COL(_PAUSE_BREAK))) { if (matrix_is_on(ROW(PAUSE), COL(PAUSE))) {
_matrix_break(_PAUSE_BREAK); matrix_break(PAUSE);
} }
uint8_t code; uint8_t code;
while ((code = ps2_host_recv())) { while ((code = ps2_host_recv())) {
debug_hex(code); debug(" ");
switch (state) { switch (state) {
case INIT: case INIT:
switch (code) { switch (code) {
@ -141,113 +199,88 @@ uint8_t matrix_scan(void)
state = E0; state = E0;
break; break;
case 0xF0: // break code case 0xF0: // break code
state = BREAK; state = F0;
break; break;
case 0xE1: // Pause/Break case 0xE1: // Pause/Break
state = E1; state = E1;
break; break;
case 0x83: // F8
matrix_make(F8);
state = INIT;
break;
case 0x84: // PrintScreen
matrix_make(PRINT_SCREEN);
state = INIT;
break;
default: // normal key make default: // normal key make
if (code < 0x80) { if (code < 0x80) {
_matrix_make(code); matrix_make(code);
} else { } else {
debug("ps/2 unknow code: "); debug_hex(code); debug("\n"); debug("unexpected scan code at INIT: "); debug_hex(code); debug("\n");
} }
state = INIT; state = INIT;
} }
break; break;
case E0: case E0:
switch (code) { switch (code) {
case 0x12: // PrintScreen(make) case 0x12: // postfix/postfix code for exceptional keys
state = E0_12; case 0x59: // postfix/postfix code for exceptional keys
break;
case 0x7C: // PrintScreen(typematic)
// ignore // ignore
state = INIT; state = INIT;
break; break;
case 0x7E: // former part of Control-Pause[E0 7E E0 F0 7E]
matrix_make(PAUSE);
state = INIT;
break;
case 0xF0: // E0 break case 0xF0: // E0 break
state = E0_F0; state = E0_F0;
break; break;
default: // E0 make default: // E0 make
if (code < 0x80) { if (code < 0x80) {
_matrix_make(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 { } else {
debug("ps/2 unknow code: "); debug_hex(code); debug("\n"); debug("unexpected scan code at E0: "); debug_hex(code); debug("\n");
} }
state = INIT; state = INIT;
} }
break; break;
/* PrintScreen(make) */ case F0:
case E0_12:
switch (code) { switch (code) {
case 0xE0: case 0x83:
state = E0_12_E0; matrix_break(F8);
break;
default:
state = INIT;
}
break;
case E0_12_E0:
switch (code) {
case 0x7C:
_matrix_make(_PRINT_SCREEN);
state = INIT; state = INIT;
break; break;
default: case 0x84:
matrix_break(PRINT_SCREEN);
state = INIT; state = INIT;
}
break;
/* PrintScreen(break) */
case E0_F0_7C:
switch (code) {
case 0xE0:
state = E0_F0_7C_E0;
break; break;
default: default:
state = INIT; if (code < 0x80) {
matrix_break(code);
} else {
debug("unexpected scan code at F0: "); debug_hex(code); debug("\n");
}
state = INIT;
} }
break; break;
case E0_F0_7C_E0: case E0_F0: // E0 break
switch (code) {
case 0xF0:
state = E0_F0_7C_E0_F0;
break;
default:
state = INIT;
}
break;
case E0_F0_7C_E0_F0:
switch (code) { switch (code) {
case 0x12: case 0x12: // postfix/postfix code for exceptional keys
_matrix_break(_PRINT_SCREEN); case 0x59: // postfix/postfix code for exceptional keys
case 0x7E: // latter part of Control-Pause[E0 7E E0 F0 7E]
// ignore
state = INIT; state = INIT;
break; break;
default: default:
if (code < 0x80) {
matrix_break(code|0x80);
} else {
debug("unexpected scan code at E0_F0: "); debug_hex(code); debug("\n");
}
state = INIT; state = INIT;
} }
break; break;
/* Pause/Break */ /* Pause */
case E1: case E1:
switch (code) { switch (code) {
case 0x14: case 0x14:
@ -305,7 +338,7 @@ uint8_t matrix_scan(void)
case E1_14_77_E1_F0_14_F0: case E1_14_77_E1_F0_14_F0:
switch (code) { switch (code) {
case 0x77: case 0x77:
_matrix_make(_PAUSE_BREAK); matrix_make(PAUSE);
state = INIT; state = INIT;
break; break;
default: default:
@ -317,6 +350,7 @@ uint8_t matrix_scan(void)
} }
} }
// handle LED indicators
static uint8_t prev_leds = 0; static uint8_t prev_leds = 0;
if (prev_leds != usb_keyboard_leds) { if (prev_leds != usb_keyboard_leds) {
uint8_t leds = 0; uint8_t leds = 0;
@ -327,7 +361,7 @@ uint8_t matrix_scan(void)
if (usb_keyboard_leds&(1<<USB_LED_CAPS_LOCK)) if (usb_keyboard_leds&(1<<USB_LED_CAPS_LOCK))
leds |= (1<<PS2_LED_CAPS_LOCK); leds |= (1<<PS2_LED_CAPS_LOCK);
_ps2_set_leds(leds); ps2_set_leds(leds);
prev_leds = usb_keyboard_leds; prev_leds = usb_keyboard_leds;
} }
@ -336,7 +370,7 @@ uint8_t matrix_scan(void)
bool matrix_is_modified(void) bool matrix_is_modified(void)
{ {
return _matrix_is_modified; return is_modified;
} }
inline inline
@ -422,24 +456,24 @@ static bool matrix_has_ghost_in_row(uint8_t row)
inline inline
static void _matrix_make(uint8_t code) static void matrix_make(uint8_t code)
{ {
if (!matrix_is_on(_ROW(code), _COL(code))) { if (!matrix_is_on(ROW(code), COL(code))) {
matrix[_ROW(code)] |= 1<<_COL(code); matrix[ROW(code)] |= 1<<COL(code);
_matrix_is_modified = true; is_modified = true;
} }
} }
inline inline
static void _matrix_break(uint8_t code) static void matrix_break(uint8_t code)
{ {
if (matrix_is_on(_ROW(code), _COL(code))) { if (matrix_is_on(ROW(code), COL(code))) {
matrix[_ROW(code)] &= ~(1<<_COL(code)); matrix[ROW(code)] &= ~(1<<COL(code));
_matrix_is_modified = true; is_modified = true;
} }
} }
static void _ps2_reset(void) static void ps2_reset(void)
{ {
ps2_host_send(0xFF); ps2_host_send(0xFF);
ps2_host_recv(); // 0xFA ps2_host_recv(); // 0xFA
@ -447,7 +481,7 @@ static void _ps2_reset(void)
_delay_ms(1000); _delay_ms(1000);
} }
static void _ps2_set_leds(uint8_t leds) static void ps2_set_leds(uint8_t leds)
{ {
ps2_host_send(0xED); ps2_host_send(0xED);
ps2_host_recv(); // 0xFA ps2_host_recv(); // 0xFA

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