ifdef KEYMAP | ifdef KEYMAP | ||||
SRC := keymap_$(KEYMAP).c $(SRC) | SRC := keymap_$(KEYMAP).c $(SRC) | ||||
else | else | ||||
SRC := keymap_ansi.c $(SRC) | |||||
SRC := keymap_plain.c $(SRC) | |||||
endif | endif | ||||
CONFIG_H = config.h | CONFIG_H = config.h |
extern const uint16_t fn_actions[]; | extern const uint16_t fn_actions[]; | ||||
/* Common layout: ANSI+ISO | |||||
* ,---. ,---------------. ,---------------. ,---------------. ,-----------. ,---. | |||||
* |Esc| |F1 |F2 |F3 |F4 | |F5 |F6 |F7 |F8 | |F9 |F10|F11|F12| |PrS|ScL|Pau| |Pwr| | |||||
* `---' `---------------' `---------------' `---------------' `-----------' `---' | |||||
* ,-----------------------------------------------------------. ,-----------. ,---------------. | |||||
* | `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backspa| |Ins|Hom|PgU| |NmL| =| /| *| | |||||
* |-----------------------------------------------------------| |-----------| |---------------| | |||||
* |Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| \| |Del|End|PgD| | 7| 8| 9| -| | |||||
* |-----------------------------------------------------------| `-----------' |---------------| | |||||
* |CapsLo| A| S| D| F| G| H| J| K| L| ;| '|Return | | 4| 5| 6| +| | |||||
* |-----------------------------------------------------------| ,---. |---------------| | |||||
* |Shif|\ | Z| X| C| V| B| N| M| ,| ,| /|Shift | |Up | | 1| 2| 3| | | |||||
* |-----------------------------------------------------------| ,-----------. |-----------|Ent| | |||||
* |Ctrl |Opt |Cmd | Space | |Opt |Ctrl | |Lef|Dow|Rig| | 0| .| | | |||||
* `-----------------------------------------------------------' `-----------' `---------------' | |||||
*/ | |||||
#define KEYMAP( \ | |||||
K35, K7A,K78,K63,K76, K60,K61,K62,K64, K65,K6D,K67,K6F, K69,K6B,K71, K7F, \ | |||||
K32,K12,K13,K14,K15,K17,K16,K1A,K1C,K19,K1D,K1B,K18,K33, K72,K73,K74, K47,K51,K4B,K43, \ | |||||
K30,K0C,K0D,K0E,K0F,K11,K10,K20,K22,K1F,K23,K21,K1E,K2A, K75,K77,K79, K59,K5B,K5C,K4E, \ | |||||
K39,K00,K01,K02,K03,K05,K04,K26,K28,K25,K29,K27, K24, K56,K57,K58,K45, \ | |||||
K38,K0A,K06,K07,K08,K09,K0B,K2D,K2E,K2B,K2F,K2C, K7B, K3E, K53,K54,K55, \ | |||||
K36,K3A,K37, K31, K7C,K7D, K3B,K3D,K3C, K52, K41,K4C \ | |||||
) { \ | |||||
{ KC_##K00, KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06, KC_##K07 }, \ | |||||
{ KC_##K08, KC_##K09, KC_##K0A, KC_##K0B, KC_##K0C, KC_##K0D, KC_##K0E, KC_##K0F }, \ | |||||
{ KC_##K10, KC_##K11, KC_##K12, KC_##K13, KC_##K14, KC_##K15, KC_##K16, KC_##K17 }, \ | |||||
{ KC_##K18, KC_##K19, KC_##K1A, KC_##K1B, KC_##K1C, KC_##K1D, KC_##K1E, KC_##K1F }, \ | |||||
{ KC_##K20, KC_##K21, KC_##K22, KC_##K23, KC_##K24, KC_##K25, KC_##K26, KC_##K27 }, \ | |||||
{ KC_##K28, KC_##K29, KC_##K2A, KC_##K2B, KC_##K2C, KC_##K2D, KC_##K2E, KC_##K2F }, \ | |||||
{ KC_##K30, KC_##K31, KC_##K32, KC_##K33, KC_PENT, KC_##K35, KC_##K36, KC_##K37 }, \ | |||||
{ KC_##K38, KC_##K39, KC_##K3A, KC_##K3B, KC_##K3C, KC_##K3D, KC_##K3E, KC_NO }, \ | |||||
{ KC_F17, KC_##K41, KC_NO, KC_##K43, KC_F18, KC_##K45, KC_NO, KC_##K47 }, \ | |||||
{ KC_NO, KC_NO, KC_NO, KC_##K4B, KC_##K4C, KC_NO, KC_##K4E, KC_F18 }, \ | |||||
{ KC_F19, KC_##K51, KC_##K52, KC_##K53, KC_##K54, KC_##K55, KC_##K56, KC_##K57 }, \ | |||||
{ KC_##K58, KC_##K59, KC_F20, KC_##K5B, KC_##K5C, KC_INT3, KC_INT1, KC_PCMM }, \ | |||||
{ KC_##K60, KC_##K61, KC_##K62, KC_##K63, KC_##K64, KC_##K65, KC_LANG2, KC_##K67 }, \ | |||||
{ KC_LANG1, KC_##K69, KC_F16, KC_##K6B, KC_NO, KC_##K6D, KC_APP, KC_##K6F }, \ | |||||
{ KC_NO, KC_##K71, KC_##K72, KC_##K73, KC_##K74, KC_##K75, KC_##K76, KC_##K77 }, \ | |||||
{ KC_##K78, KC_##K79, KC_##K7A, KC_##K7B, KC_##K7C, KC_##K7D, KC_NO, KC_##K7F } \ | |||||
} | |||||
/* M0115 Apple Extended Keyboard ANSI | /* M0115 Apple Extended Keyboard ANSI | ||||
* ,---. ,---------------. ,---------------. ,---------------. ,-----------. ,---. | * ,---. ,---------------. ,---------------. ,---------------. ,-----------. ,---. | ||||
* |Esc| |F1 |F2 |F3 |F4 | |F5 |F6 |F7 |F8 | |F9 |F10|F11|F12| |PrS|ScL|Pau| |Pwr| | * |Esc| |F1 |F2 |F3 |F4 | |F5 |F6 |F7 |F8 | |F9 |F10|F11|F12| |PrS|ScL|Pau| |Pwr| | ||||
*/ | */ | ||||
#define KEYMAP_EXT_ISO( \ | #define KEYMAP_EXT_ISO( \ | ||||
K35, K7A,K78,K63,K76, K60,K61,K62,K64, K65,K6D,K67,K6F, K69,K6B,K71, K7F, \ | K35, K7A,K78,K63,K76, K60,K61,K62,K64, K65,K6D,K67,K6F, K69,K6B,K71, K7F, \ | ||||
K0A,K12,K13,K14,K15,K17,K16,K1A,K1C,K19,K1D,K1B,K18,K33, K72,K73,K74, K47,K51,K4B,K43, \ | |||||
K32,K12,K13,K14,K15,K17,K16,K1A,K1C,K19,K1D,K1B,K18,K33, K72,K73,K74, K47,K51,K4B,K43, \ | |||||
K30,K0C,K0D,K0E,K0F,K11,K10,K20,K22,K1F,K23,K21,K1E,K24, K75,K77,K79, K59,K5B,K5C,K4E, \ | K30,K0C,K0D,K0E,K0F,K11,K10,K20,K22,K1F,K23,K21,K1E,K24, K75,K77,K79, K59,K5B,K5C,K4E, \ | ||||
K39,K00,K01,K02,K03,K05,K04,K26,K28,K25,K29,K27,K2A, K56,K57,K58,K45, \ | K39,K00,K01,K02,K03,K05,K04,K26,K28,K25,K29,K27,K2A, K56,K57,K58,K45, \ | ||||
K38,K32,K06,K07,K08,K09,K0B,K2D,K2E,K2B,K2F,K2C, K7B, K3E, K53,K54,K55, \ | |||||
K38,K0A,K06,K07,K08,K09,K0B,K2D,K2E,K2B,K2F,K2C, K7B, K3E, K53,K54,K55, \ | |||||
K36,K3A,K37, K31, K7C,K7D, K3B,K3D,K3C, K52, K41,K4C \ | K36,K3A,K37, K31, K7C,K7D, K3B,K3D,K3C, K52, K41,K4C \ | ||||
) { \ | ) { \ | ||||
{ KC_##K00, KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06, KC_##K07 }, \ | { KC_##K00, KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06, KC_##K07 }, \ | ||||
K35,K12,K13,K14,K15,K17,K16,K1A,K1C,K19,K1D,K1B,K18,K33, K47,K51,K4B,K43, \ | K35,K12,K13,K14,K15,K17,K16,K1A,K1C,K19,K1D,K1B,K18,K33, K47,K51,K4B,K43, \ | ||||
K30,K0C,K0D,K0E,K0F,K11,K10,K20,K22,K1F,K23,K21,K1E, K59,K5B,K5C,K45, \ | K30,K0C,K0D,K0E,K0F,K11,K10,K20,K22,K1F,K23,K21,K1E, K59,K5B,K5C,K45, \ | ||||
K39,K00,K01,K02,K03,K05,K04,K26,K28,K25,K29,K27,K2A,K24, K56,K57,K58,K4E, \ | K39,K00,K01,K02,K03,K05,K04,K26,K28,K25,K29,K27,K2A,K24, K56,K57,K58,K4E, \ | ||||
K38,K32,K06,K07,K08,K09,K0B,K2D,K2E,K2B,K2F,K2C,K7B,K3E, K53,K54,K55, \ | |||||
K38,K0A,K06,K07,K08,K09,K0B,K2D,K2E,K2B,K2F,K2C,K7B,K3E, K53,K54,K55, \ | |||||
K36,K3A,K37, K31, K3B,K3C,K3D, K52, K41,K4C \ | K36,K3A,K37, K31, K3B,K3C,K3D, K52, K41,K4C \ | ||||
) { \ | ) { \ | ||||
{ KC_##K00, KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06, KC_##K07 }, \ | { KC_##K00, KC_##K01, KC_##K02, KC_##K03, KC_##K04, KC_##K05, KC_##K06, KC_##K07 }, \ | ||||
{ KC_##K08, KC_##K09, KC_NO, KC_##K0B, KC_##K0C, KC_##K0D, KC_##K0E, KC_##K0F }, \ | |||||
{ KC_##K08, KC_##K09, KC_##K0A KC_##K0B, KC_##K0C, KC_##K0D, KC_##K0E, KC_##K0F }, \ | |||||
{ KC_##K10, KC_##K11, KC_##K12, KC_##K13, KC_##K14, KC_##K15, KC_##K16, KC_##K17 }, \ | { KC_##K10, KC_##K11, KC_##K12, KC_##K13, KC_##K14, KC_##K15, KC_##K16, KC_##K17 }, \ | ||||
{ KC_##K18, KC_##K19, KC_##K1A, KC_##K1B, KC_##K1C, KC_##K1D, KC_##K1E, KC_##K1F }, \ | { KC_##K18, KC_##K19, KC_##K1A, KC_##K1B, KC_##K1C, KC_##K1D, KC_##K1E, KC_##K1F }, \ | ||||
{ KC_##K20, KC_##K21, KC_##K22, KC_##K23, KC_##K24, KC_##K25, KC_##K26, KC_##K27 }, \ | { KC_##K20, KC_##K21, KC_##K22, KC_##K23, KC_##K24, KC_##K25, KC_##K26, KC_##K27 }, \ | ||||
{ KC_##K28, KC_##K29, KC_##K2A, KC_##K2B, KC_##K2C, KC_##K2D, KC_##K2E, KC_##K2F }, \ | { KC_##K28, KC_##K29, KC_##K2A, KC_##K2B, KC_##K2C, KC_##K2D, KC_##K2E, KC_##K2F }, \ | ||||
{ KC_##K30, KC_##K31, KC_##K32, KC_##K33, KC_NO, KC_##K35, KC_##K36, KC_##K37 }, \ | |||||
{ KC_##K30, KC_##K31, KC_NO, KC_##K33, KC_NO, KC_##K35, KC_##K36, KC_##K37 }, \ | |||||
{ KC_##K38, KC_##K39, KC_##K3A, KC_##K3B, KC_##K3C, KC_##K3D, KC_##K3E, KC_NO }, \ | { KC_##K38, KC_##K39, KC_##K3A, KC_##K3B, KC_##K3C, KC_##K3D, KC_##K3E, KC_NO }, \ | ||||
{ KC_NO, KC_##K41, KC_NO, KC_##K43, KC_NO, KC_##K45, KC_NO, KC_##K47 }, \ | { KC_NO, KC_##K41, KC_NO, KC_##K43, KC_NO, KC_##K45, KC_NO, KC_##K47 }, \ | ||||
{ KC_NO, KC_NO, KC_NO, KC_##K4B, KC_##K4C, KC_NO, KC_##K4E, KC_NO }, \ | { KC_NO, KC_NO, KC_NO, KC_##K4B, KC_##K4C, KC_NO, KC_##K4E, KC_NO }, \ |
#include "keymap_common.h" | |||||
/* | |||||
* ,---. ,---------------. ,---------------. ,---------------. ,-----------. ,---. | |||||
* |Esc| |F1 |F2 |F3 |F4 | |F5 |F6 |F7 |F8 | |F9 |F10|F11|F12| |PrS|ScL|Pau| |Pwr| | |||||
* `---' `---------------' `---------------' `---------------' `-----------' `---' | |||||
* ,-----------------------------------------------------------. ,-----------. ,---------------. | |||||
* | `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backspa| |Ins|Hom|PgU| |NmL| =| /| *| | |||||
* |-----------------------------------------------------------| |-----------| |---------------| | |||||
* |Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| \| |Del|End|PgD| | 7| 8| 9| -| | |||||
* |-----------------------------------------------------------| `-----------' |---------------| | |||||
* |CapsLo| A| S| D| F| G| H| J| K| L| ;| '|Return | | 4| 5| 6| +| | |||||
* |-----------------------------------------------------------| ,---. |---------------| | |||||
* |Shif|\ | Z| X| C| V| B| N| M| ,| ,| /|Shift | |Up | | 1| 2| 3| | | |||||
* |-----------------------------------------------------------| ,-----------. |-----------|Ent| | |||||
* |Ctrl |Opt |Cmd | Space | |Opt |Ctrl | |Lef|Dow|Rig| | 0| .| | | |||||
* `-----------------------------------------------------------' `-----------' `---------------' | |||||
*/ | |||||
const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = { | |||||
[0] = KEYMAP( | |||||
ESC, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, PSCR,SLCK,PAUS, NO, | |||||
FN0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, MINS,EQL, BSPC, INS, HOME,PGUP, NLCK,EQL, PSLS,PAST, | |||||
TAB, Q, W, E, R, T, Y, U, I, O, P, LBRC,RBRC,FN1, DEL, END, PGDN, P7, P8, P9, PMNS, | |||||
LCAP,A, S, D, F, G, H, J, K, L, SCLN,QUOT, ENT, P4, P5, P6, PPLS, | |||||
LSFT,NUBS,Z, X, C, V, B, N, M, COMM,DOT, SLSH, RSFT, UP, P1, P2, P3, | |||||
LCTL,LALT,LGUI, SPC, RALT,RCTL, LEFT,DOWN,RGHT, P0, PDOT,PENT | |||||
), | |||||
[1] = KEYMAP( | |||||
GRV, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, PSCR,SLCK,BRK, NO, | |||||
FN0, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, DEL, INS, HOME,PGUP, NLCK,BTN1,BTN2,BTN3, | |||||
TAB, Q, W, E, R, T, Y, U, PSCR,SLCK,PAUS,UP, INS, FN1, DEL, END, PGDN, WH_D,MS_U,WH_U,WH_D, | |||||
LCAP,VOLD,VOLU,MUTE,F, G, H, J, HOME,PGUP,LEFT,RGHT, ENT, MS_L,MS_D,MS_R,WH_U, | |||||
LSFT,NUBS,Z, X, C, V, B, N, M, END, PGDN,DOWN, RSFT, PGUP, WH_L,MS_D,WH_R, | |||||
LCTL,LGUI,LALT, SPC, RGUI,RCTL, HOME,PGDN,END, BTN1, BTN2,BTN3 | |||||
), | |||||
}; | |||||
const uint16_t PROGMEM fn_actions[] = { | |||||
[0] = ACTION_LAYER_TAP_KEY(1, KC_GRV), | |||||
[1] = ACTION_LAYER_TAP_KEY(1, KC_BSLS), | |||||
}; |
#endif | #endif | ||||
static bool is_iso_layout = false; | |||||
static bool is_modified = false; | static bool is_modified = false; | ||||
static report_mouse_t mouse_report = {}; | static report_mouse_t mouse_report = {}; | ||||
adb_host_init(); | adb_host_init(); | ||||
// wait for keyboard to boot up and receive command | // wait for keyboard to boot up and receive command | ||||
_delay_ms(1000); | _delay_ms(1000); | ||||
// Determine ISO keyboard by handle id | |||||
// http://lxr.free-electrons.com/source/drivers/macintosh/adbhid.c?v=4.4#L815 | |||||
uint16_t handle_id = adb_host_talk(ADB_ADDR_KEYBOARD, 3); | |||||
switch (handle_id) { | |||||
case 0x04: case 0x05: case 0x07: case 0x09: case 0x0D: | |||||
case 0x11: case 0x14: case 0x19: case 0x1D: case 0xC1: | |||||
case 0xC4: case 0xC7: | |||||
is_iso_layout = true; | |||||
break; | |||||
default: | |||||
is_iso_layout = false; | |||||
break; | |||||
} | |||||
// Enable keyboard left/right modifier distinction | // Enable keyboard left/right modifier distinction | ||||
// Addr:Keyboard(0010), Cmd:Listen(10), Register3(11) | // Addr:Keyboard(0010), Cmd:Listen(10), Register3(11) | ||||
// upper byte: reserved bits 0000, device address 0010 | // upper byte: reserved bits 0000, device address 0010 | ||||
_delay_ms(500); | _delay_ms(500); | ||||
DDRD |= (1<<6); PORTD &= ~(1<<6); | DDRD |= (1<<6); PORTD &= ~(1<<6); | ||||
uint16_t handle_id2 = adb_host_talk(ADB_ADDR_KEYBOARD, 3); | |||||
xprintf("handle_id: %02X -> %02X\n", handle_id&0xff, handle_id2&0xff); | |||||
return; | return; | ||||
} | } | ||||
{ | { | ||||
uint16_t codes; | uint16_t codes; | ||||
int16_t x, y; | int16_t x, y; | ||||
static int8_t mouseacc; | |||||
static int8_t mouseacc; | |||||
_delay_ms(12); // delay for preventing overload of poor ADB keyboard controller | _delay_ms(12); // delay for preventing overload of poor ADB keyboard controller | ||||
codes = adb_host_mouse_recv(); | codes = adb_host_mouse_recv(); | ||||
// If nothing received reset mouse acceleration, and quit. | |||||
// If nothing received reset mouse acceleration, and quit. | |||||
if (!codes) { | if (!codes) { | ||||
mouseacc = 1; | mouseacc = 1; | ||||
return; | return; | ||||
mouse_report.buttons |= MOUSE_BTN1; | mouse_report.buttons |= MOUSE_BTN1; | ||||
if (codes & (1 << 15)) | if (codes & (1 << 15)) | ||||
mouse_report.buttons &= ~MOUSE_BTN1; | mouse_report.buttons &= ~MOUSE_BTN1; | ||||
// lower seven bits are movement, as signed int_7. | |||||
// low byte is X-axis, high byte is Y. | |||||
// lower seven bits are movement, as signed int_7. | |||||
// low byte is X-axis, high byte is Y. | |||||
y = (codes>>8 & 0x3F); | y = (codes>>8 & 0x3F); | ||||
x = (codes>>0 & 0x3F); | x = (codes>>0 & 0x3F); | ||||
// bit seven and fifteen is negative | // bit seven and fifteen is negative | ||||
// usb does not use int_8, but int_7 (measuring distance) with sign-bit. | |||||
// usb does not use int_8, but int_7 (measuring distance) with sign-bit. | |||||
if (codes & (1 << 6)) | if (codes & (1 << 6)) | ||||
x = (x-0x40); | x = (x-0x40); | ||||
if (codes & (1 << 14)) | if (codes & (1 << 14)) | ||||
// Accelerate mouse. (They weren't meant to be used on screens larger than 320x200). | // Accelerate mouse. (They weren't meant to be used on screens larger than 320x200). | ||||
x *= mouseacc; | x *= mouseacc; | ||||
y *= mouseacc; | y *= mouseacc; | ||||
// Cap our two bytes per axis to one byte. | |||||
// Cap our two bytes per axis to one byte. | |||||
// Easier with a MIN-function, but since -MAX(-a,-b) = MIN(a,b)... | // Easier with a MIN-function, but since -MAX(-a,-b) = MIN(a,b)... | ||||
// I.E. MIN(MAX(x,-127),127) = -MAX(-MAX(x, -127), -127) = MIN(-MIN(-x,127),127) | // I.E. MIN(MAX(x,-127),127) = -MAX(-MAX(x, -127), -127) = MIN(-MIN(-x,127),127) | ||||
mouse_report.x = -MAX(-MAX(x, -127), -127); | mouse_report.x = -MAX(-MAX(x, -127), -127); | ||||
print_decs(mouse_report.x); print(" "); | print_decs(mouse_report.x); print(" "); | ||||
print_decs(mouse_report.y); print("]\n"); | print_decs(mouse_report.y); print("]\n"); | ||||
} | } | ||||
// Send result by usb. | |||||
// Send result by usb. | |||||
host_mouse_send(&mouse_report); | host_mouse_send(&mouse_report); | ||||
// increase acceleration of mouse | // increase acceleration of mouse | ||||
mouseacc += ( mouseacc < ADB_MOUSE_MAXACC ? 1 : 0 ); | mouseacc += ( mouseacc < ADB_MOUSE_MAXACC ? 1 : 0 ); | ||||
xprintf("adb_host_kbd_recv: ERROR(%d)\n", codes); | xprintf("adb_host_kbd_recv: ERROR(%d)\n", codes); | ||||
return key1; | return key1; | ||||
} else { | } else { | ||||
/* Swap codes for ISO keyboard | |||||
* | |||||
* ANSI | |||||
* ,----------- ----------. | |||||
* | *a| 1| 2 =|Backspa| | |||||
* |----------- ----------| | |||||
* |Tab | Q| | ]| *c| | |||||
* |----------- ----------| | |||||
* |CapsLo| A| '|Return | | |||||
* |----------- ----------| | |||||
* |Shift | Shift | | |||||
* `----------- ----------' | |||||
* | |||||
* ISO | |||||
* ,----------- ----------. | |||||
* | *a| 1| 2 =|Backspa| | |||||
* |----------- ----------| | |||||
* |Tab | Q| | ]|Retur| | |||||
* |----------- -----` | | |||||
* |CapsLo| A| '| *c| | | |||||
* |----------- ----------| | |||||
* |Shif| *b| Shift | | |||||
* `----------- ----------' | |||||
* | |||||
* ADB scan code USB usage | |||||
* ------------- --------- | |||||
* Key ANSI ISO ANSI ISO | |||||
* --------------------------------------------- | |||||
* *a 0x32 0x0A 0x35 0x35 | |||||
* *b ---- 0x32 ---- 0x64 | |||||
* *c 0x2A 0x2A 0x31 0x31(or 0x32) | |||||
*/ | |||||
if (is_iso_layout) { | |||||
if (key0 == 0x32) { | |||||
key0 = 0x0A; | |||||
} else if (key0 == 0x0A) { | |||||
key0 = 0x32; | |||||
} | |||||
} | |||||
register_key(key0); | register_key(key0); | ||||
if (key1 != 0xFF) // key1 is 0xFF when no second key. | if (key1 != 0xFF) // key1 is 0xFF when no second key. | ||||
extra_key = key1<<8 | 0xFF; // process in a separate call | extra_key = key1<<8 | 0xFF; // process in a separate call |