11 years ago · 78bfaed0f5
--- a/keyboard/IIgs_Standard/Makefile
+++ b/keyboard/IIgs_Standard/Makefile
@@ -0,0 +1,95 @@
 #----------------------------------------------------------------------------
 # On command line:
 #
 # make all = Make software.
 #
 # make clean = Clean out built project files.
 #
 # make coff = Convert ELF to AVR COFF.
 #
 # make extcoff = Convert ELF to AVR Extended COFF.
 #
 # make program = Download the hex file to the device.
 # Please customize your programmer settings(PROGRAM_CMD)
 #
 # make teensy = Download the hex file to the device, using teensy_loader_cli.
 # (must have teensy_loader_cli installed).
 #
 # make dfu = Download the hex file to the device, using dfu-programmer (must
 # have dfu-programmer installed).
 #
 # make flip = Download the hex file to the device, using Atmel FLIP (must
 # have Atmel FLIP installed).
 #
 # make dfu-ee = Download the eeprom file to the device, using dfu-programmer
 # (must have dfu-programmer installed).
 #
 # make flip-ee = Download the eeprom file to the device, using Atmel FLIP
 # (must have Atmel FLIP installed).
 #
 # make debug = Start either simulavr or avarice as specified for debugging, 
 # with avr-gdb or avr-insight as the front end for debugging.
 #
 # make filename.s = Just compile filename.c into the assembler code only.
 #
 # make filename.i = Create a preprocessed source file for use in submitting
 # bug reports to the GCC project.
 #
 # To rebuild project do "make clean" then "make all".
 #----------------------------------------------------------------------------

 # Target file name (without extension).
 TARGET = IIgs_Standard

 # Directory common source filess exist
 TOP_DIR = ../..

 # Directory keyboard dependent files exist
 TARGET_DIR = .

 # keyboard dependent files
 SRC = keymap.c \
 matrix.c \
 led.c 

 CONFIG_H = config.h


 # MCU name, you MUST set this to match the board you are using
 # type "make clean" after changing this, so all files will be rebuilt
 #MCU = at90usb162 # Teensy 1.0
 #MCU = atmega32u4 # Teensy 2.0
 #MCU = at90usb646 # Teensy++ 1.0
 MCU = at90usb1286 # Teensy++ 2.0


 # Processor frequency.
 # Normally the first thing your program should do is set the clock prescaler,
 # so your program will run at the correct speed. You should also set this
 # variable to same clock speed. The _delay_ms() macro uses this, and many
 # examples use this variable to calculate timings. Do not add a "UL" here.
 F_CPU = 16000000


 # Build Options
 # comment out to disable the options.
 #
 MOUSEKEY_ENABLE = no # Mouse keys
 #PS2_MOUSE_ENABLE = yes # PS/2 mouse(TrackPoint) support
 EXTRAKEY_ENABLE = yes # Audio control and System control
 #NKRO_ENABLE = yes # USB Nkey Rollover



 #---------------- Programming Options --------------------------
 PROGRAM_CMD = teensy_loader_cli -mmcu=$(MCU) -w -v $(TARGET).hex



 # Search Path
 VPATH += $(TARGET_DIR)
 VPATH += $(TOP_DIR)

 include $(TOP_DIR)/protocol/pjrc.mk
 include $(TOP_DIR)/common.mk
 include $(TOP_DIR)/rules.mk
--- a/keyboard/IIgs_Standard/README
+++ b/keyboard/IIgs_Standard/README
@@ -0,0 +1,43 @@
 Alternative Controller for Apple IIgs/Standard(M0116)
 JeffreySung([email protected])

 ===============================

 Feature
 -------
 - Replaceable keyboard controller for Apple IIgs(A9M0330)/Standard(M0116)
 - Teensy++ 2.0 required
 - Some signal bypass required
 - ADB keyboard doesn't use matrix for modifier keys. With virtual row for modifier keys, these keys are merged into key matrix.
 - Power key couldn't be used because power key is not connected to controller.

 History
 =======
 - 2012.09.17 First Release

 Build
 =====
 0. Just Type "Make" and return.

 Hardware
 ========
 PJRC Teensy
 -----------
 0. The following ports should not be connected to board.
 From top view of Teensy++, from GND and counter clock wise.
 -7,26(in keyboard PCB, these pins are VDD,GND)
 -30,31(in Teensy++, these pins are Ref,GND respectively)
 -5,6(D2,D3 for bluetooth in future)
 1. Bypass 31 pin(from board) to E4(Teensy)
 2. Bypass 30 pin(from board) to F2(Teensy)
 3. Refer doc directory

 To Do
 =====
 0. Caps Lock connect
 1. Layer Change by toggling Clear Key
 2. Eject Key add. (following files should be modified.)
 common/usb_keycodes.h
 common/keyboard.c
 3. Use bluetooth
 EOF
--- a/keyboard/IIgs_Standard/config.h
+++ b/keyboard/IIgs_Standard/config.h
@@ -0,0 +1,68 @@
 /*
 Copyright 2011 Jun Wako <[email protected]>

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 2 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

 #ifndef CONFIG_H
 #define CONFIG_H

 /* controller configuration */
 #include "controller_teensy.h"


 /* USB Device descriptor parameter */
 /* for Apple 
 #define VENDOR_ID 0x05AC
 #define PRODUCT_ID 0xBEE0
 */
 #define VENDOR_ID 0xFEED
 #define PRODUCT_ID 0xBEE0
 #define DEVICE_VER 0x0202
 #define MANUFACTURER t.m.k.
 #define PRODUCT Apple Desktop Bus Keyboard


 /* message strings */
 #define DESCRIPTION Apple M0116/A9M0660 keyboard firmware


 /* matrix size */
 #define MATRIX_ROWS 11 // last row is virtual for modifier
 #define MATRIX_COLS 8
 /* define if matrix has ghost */
 #define MATRIX_HAS_GHOST
 /* Set 0 if need no debouncing */
 #define DEBOUNCE 5


 /* key combination for command */
 #define IS_COMMAND() ( \
 keyboard_report->mods == (MOD_BIT(KB_LSHIFT) | MOD_BIT(KB_LCTRL) | MOD_BIT(KB_LALT) | MOD_BIT(KB_LGUI)) || \
 keyboard_report->mods == (MOD_BIT(KB_LSHIFT) | MOD_BIT(KB_RSHIFT)) \
 )


 /* layer switching */
 #define LAYER_SWITCH_DELAY 100
 #define LAYER_SEND_FN_TERM 300


 /* mouse keys */
 #ifdef MOUSEKEY_ENABLE
 # define MOUSEKEY_DELAY_TIME 192
 #endif


 #endif
--- a/keyboard/IIgs_Standard/doc/PIN_BYPASS.jpg
+++ b/keyboard/IIgs_Standard/doc/PIN_BYPASS.jpg
--- a/keyboard/IIgs_Standard/doc/Teensy++_Mod.jpg
+++ b/keyboard/IIgs_Standard/doc/Teensy++_Mod.jpg
--- a/keyboard/IIgs_Standard/hid_listen.mac
+++ b/keyboard/IIgs_Standard/hid_listen.mac
--- a/keyboard/IIgs_Standard/keymap.c
+++ b/keyboard/IIgs_Standard/keymap.c
@@ -0,0 +1,136 @@
 /*
 Copyright 2012 Jeffrey Sung <[email protected]>

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 2 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

 /* 
 * Keymap for Apple IIgs/Standard Keyboard
 */
 #include <stdint.h>
 #include <stdbool.h>
 #include <avr/pgmspace.h>
 #include "usb_keycodes.h"
 #include "print.h"
 #include "debug.h"
 #include "util.h"
 #include "keymap.h"


 // Convert physical keyboard layout to matrix array.
 // This is a macro to define keymap easily in keyboard layout form.
 #define KEYMAP( \
 R3C7, R3C6, R3C5, R3C4, R3C3, R3C2, R3C1, R8C1, R8C0, R3C0, R0C0, R0C1, R0C2, R0C3, R4C4, R4C5, R4C6, R4C7, \
 R9C7, R9C6, R9C5, R9C4, R9C3, R9C2, R9C1, R9C0, R1C0, R1C1, R1C2, R1C3, R1C4, R2C4, R2C5, R2C6, R2C3, \
 R10C0,R7C7, R7C6, R7C5, R7C4, R7C3, R7C2, R7C1, R7C0, R0C4, R1C6, R1C7, R1C5, R2C0, R2C1, R2C2, R2C7, \
 R10C1,R6C7, R6C6, R6C5, R6C4, R6C3, R6C2, R6C1, R6C0, R0C5, R0C6, R4C0, R4C1, R4C2, \
 R10C4,R10C2,R10C3,R5C4, R5C7, R5C5, R5C6, R5C0, R5C2, R0C7, R5C1, R5C3, R4C3 \
 ) { \
 { R0C0, R0C1, R0C2, R0C3, R0C4, R0C5, R0C6, R0C7 }, \
 { R1C0, R1C1, R1C2, R1C3, R1C4, R1C5, R1C6, R1C7 }, \
 { R2C0, R2C1, R2C2, R2C3, R2C4, R2C5, R2C6, R2C7 }, \
 { R3C0, R3C1, R3C2, R3C3, R3C4, R3C5, R3C6, R3C7 }, \
 { R4C0, R4C1, R4C2, R4C3, R4C4, R4C5, R4C6, R4C7 }, \
 { R5C0, R5C1, R5C2, R5C3, R5C4, R5C5, R5C6, R5C7 }, \
 { R6C0, R6C1, R6C2, R6C3, R6C4, R6C5, R6C6, R6C7 }, \
 { R7C0, R7C1, R7C2, R7C3, R7C4, R7C5, R7C6, R7C7 }, \
 { R8C0, R8C1, KB_NO, KB_NO, KB_NO,KB_NO, KB_NO, KB_NO }, \
 { R9C0, R9C1, R9C2, R9C3, R9C4, R9C5, R9C6, R9C7 }, \
 { R10C0,R10C1, R10C2, R10C3, R10C4,KB_NO, KB_NO, KB_NO} \
 }

 #define KEYCODE(layer, row, col) (pgm_read_byte(&keymaps[(layer)][(row)][(col)]))


 // Assign Fn key(0-7) to a layer to which switch with the Fn key pressed.
 static const uint8_t PROGMEM fn_layer[] = {
 0, // Fn0
 1, // Fn1
 2, // Fn2
 3, // Fn3
 4, // Fn4
 0, // Fn5
 3, // Fn6
 3 // Fn7
 };

 // Assign Fn key(0-7) to a keycode sent when release Fn key without use of the layer.
 // See layer.c for details.
 static const uint8_t PROGMEM fn_keycode[] = {
 KB_NO, // Fn0
 KB_NO, // Fn1
 KB_SLSH, // Fn2
 KB_SCLN, // Fn3
 KB_SPC, // Fn4
 KB_NO, // Fn5
 KB_NO, // Fn6
 KB_NO // Fn7
 };

 static const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 /* Layer 0: Default Layer
 * ,-----------------------------------------------------------. ,---------------,
 * |Esc| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backsp | |FN0| = | / | * |
 * |-----------------------------------------------------------| |---------------|
 * |Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| | | 7 | 8 | 9 | + |
 * |-----------------------------------------------------' | |---------------|
 * |Contro| A| S| D| F| G| H| J| K| L|Fn3| '|Return | | 4 | 5 | 6 | - |
 * |-----------------------------------------------------------| |---------------|
 * |Shift | Z| X| C| V| B| N| M| ,| .| / |Shift | | 1 | 2 | 3 | E |
 * |-----------------------------------------------------------| |-----------| N |
 * |CAPS|Alt |Gui |` |SPC |BSLS |LFT|RGT|DN|UP| | 0 | . | T |
 * `-----------------------------------------------------------' |---------------'
 */
 KEYMAP(KB_ESC, KB_1, KB_2, KB_3, KB_4, KB_5, KB_6, KB_7, KB_8, KB_9, KB_0, KB_MINS,KB_EQL, KB_BSPC, KB_FN1, KB_PEQL, KB_PSLS, KB_PAST, \
 KB_TAB, KB_Q, KB_W, KB_E, KB_R, KB_T, KB_Y, KB_U, KB_I, KB_O, KB_P, KB_LBRC,KB_RBRC, KB_P7, KB_P8, KB_P9, KB_PPLS, \
 KB_LCTL,KB_A, KB_S, KB_D, KB_F, KB_G, KB_H, KB_J, KB_K, KB_L, KB_SCLN, KB_QUOT,KB_ENT, KB_P4, KB_P5, KB_P6, KB_PMNS, \
 KB_LSFT,KB_Z, KB_X, KB_C, KB_V, KB_B, KB_N, KB_M, KB_COMM,KB_DOT, KB_SLSH, KB_P1, KB_P2, KB_P3, \
 KB_CAPS,KB_LALT,KB_LGUI,KB_GRV, KB_SPC, KB_BSLS,KB_LEFT,KB_RGHT,KB_DOWN,KB_UP, KB_P0, KB_PDOT, KB_PENT),


 /* Layer 1: Tenkey use Layer
 * ,-----------------------------------------------------------. ,---------------,
 * |Esc| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backsp | |NLK| = | / | * |
 * |-----------------------------------------------------------| |---------------|
 * |Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| | |INS| 8 |PGU|V+ |
 * |-----------------------------------------------------' | |---------------|
 * |Contro| A| S| D| F| G| H| J| K| L|Fn3| '|Return | |DEL|UP |PGD|V- |
 * |-----------------------------------------------------------| |---------------|
 * |Shift | Z| X| C| V| B| N| M| ,| .| / |Shift | |LFT|DN |RGT| E |
 * |-----------------------------------------------------------| |-----------| N |
 * |CAPS|Alt |Gui |` |SPC |BSLS |LFT|RGT|DN|UP| | 0 | . | T |
 * `-----------------------------------------------------------' `---------------'
 */
 KEYMAP(KB_ESC, KB_1, KB_2, KB_3, KB_4, KB_5, KB_6, KB_7, KB_8, KB_9, KB_0, KB_MINS,KB_EQL, KB_BSPC, KB_FN0, KB_PEQL, KB_PSLS, KB_MUTE, \
 KB_TAB, KB_Q, KB_W, KB_E, KB_R, KB_T, KB_Y, KB_U, KB_I, KB_O, KB_P, KB_LBRC,KB_RBRC, KB_INS, KB_P8, KB_PGUP, KB_VOLU, \
 KB_LCTL,KB_A, KB_S, KB_D, KB_F, KB_G, KB_H, KB_J, KB_K, KB_L, KB_SCLN, KB_QUOT,KB_ENT, KB_DEL, KB_UP, KB_PGDN, KB_VOLD, \
 KB_LSFT,KB_Z, KB_X, KB_C, KB_V, KB_B, KB_N, KB_M, KB_COMM,KB_DOT, KB_SLSH, KB_LEFT, KB_DOWN, KB_RIGHT, \
 KB_CAPS,KB_LALT,KB_LGUI,KB_GRV, KB_SPC, KB_BSLS,KB_LEFT,KB_RGHT,KB_DOWN,KB_UP, KB_P0, KB_PDOT, KB_PENT),
 };


 uint8_t keymap_get_keycode(uint8_t layer, uint8_t row, uint8_t col)
 {
 return KEYCODE(layer, row, col);
 }

 uint8_t keymap_fn_layer(uint8_t fn_bits)
 {
 return pgm_read_byte(&fn_layer[biton(fn_bits)]);
 }

 uint8_t keymap_fn_keycode(uint8_t fn_bits)
 {
 return pgm_read_byte(&fn_keycode[(biton(fn_bits))]);
 }
--- a/keyboard/IIgs_Standard/led.c
+++ b/keyboard/IIgs_Standard/led.c
@@ -0,0 +1,24 @@
 /*
 Copyright 2011 Jun Wako <[email protected]>

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 2 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

 #include "stdint.h"
 #include "led.h"


 void led_set(uint8_t usb_led)
 {
 }
--- a/keyboard/IIgs_Standard/matrix.c
+++ b/keyboard/IIgs_Standard/matrix.c
@@ -0,0 +1,324 @@
 /*
 Copyright 2011 Jun Wako <[email protected]>

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 2 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

 /*
 * scan matrix
 */
 #include <stdint.h>
 #include <stdbool.h>
 #include <avr/io.h>
 #include <util/delay.h>
 #include "print.h"
 #include "debug.h"
 #include "util.h"
 #include "matrix.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


 #ifndef DEBOUNCE
 # define DEBOUNCE 0
 #endif
 static uint8_t debouncing = DEBOUNCE;

 // matrix state buffer(1:on, 0:off)
 #if (MATRIX_COLS <= 8)
 static uint8_t *matrix;
 static uint8_t *matrix_prev;
 static uint8_t _matrix0[MATRIX_ROWS];
 static uint8_t _matrix1[MATRIX_ROWS];
 #else
 static uint16_t *matrix;
 static uint16_t *matrix_prev;
 static uint16_t _matrix0[MATRIX_ROWS];
 static uint16_t _matrix1[MATRIX_ROWS];
 #endif

 #ifdef MATRIX_HAS_GHOST
 static bool matrix_has_ghost_in_row(uint8_t row);
 #endif
 static uint8_t read_col(uint8_t row);
 static void unselect_rows(void);
 static void select_row(uint8_t row);


 inline
 uint8_t matrix_rows(void)
 {
 return MATRIX_ROWS;
 }

 inline
 uint8_t matrix_cols(void)
 {
 return MATRIX_COLS;
 }

 void matrix_init(void)
 {
 // initialize row and col
 unselect_rows();
 // Input with pull-up(DDR:0, PORT:1)
 // Column C1 ~ C7 (PortC0-6)
 // Column C0(Port E1)
 DDRC &= ~0b01111111;
 PORTC |= 0b01111111;
 DDRE &= ~0b00000010;
 PORTE |= 0b00000010;
 // modifier B3/4,F4/5,E4 always input
 DDRB |= 0b00011000;
 PORTB &= 0b00011000;
 DDRF |= ~0b00110000;
 PORTF &= 0b00110000;
 //DDRB &= ~0b00011000;
 //PORTB |= 0b00011000;
 //DDRF &= ~0b00110000;
 //PORTF |= 0b00110000;
 //DDRE &= ~0b00010000;
 //PORTE |= 0b00010000;

 // 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++) _matrix1[i] = 0x00;
 matrix = _matrix0;
 matrix_prev = _matrix1;
 }

 uint8_t matrix_scan(void)
 {
 if (!debouncing) {
 uint8_t *tmp = matrix_prev;
 matrix_prev = matrix;
 matrix = tmp;
 }

 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
 unselect_rows();
 select_row(i);
 _delay_us(30); // without this wait read unstable value.
 if (matrix[i] != (uint8_t)~read_col(i)) {
 matrix[i] = (uint8_t)~read_col(i);
 if (debouncing) {
 debug("bounce!: "); debug_hex(debouncing); print("\n");
 }
 debouncing = DEBOUNCE;
 }
 }
 unselect_rows();

 if (debouncing) {
 debouncing--;
 }

 return 1;
 }

 bool matrix_is_modified(void)
 {
 if (debouncing) return false;
 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
 if (matrix[i] != matrix_prev[i]) {
 return true;
 }
 }
 return false;
 }

 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)
 {
 print("\nr/c 01234567\n");
 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 uint8_t read_col(uint8_t row)
 {
 // For normal : Column C1 ~ C7 (PortC0-6), C0(Port E1)
 // For modifier : B3(CNTRL)/4(SHIFT),F4(CMD/GUI)/5(OPTION,ALT)
 // Modifier would be copied to report->mods except E4(CAPSLOCK)
 uint8_t tmp;
 if ( row == 10 ) {
 tmp = 0xF0;
 tmp |= (PINB >> 3 ) & 0b00000011; // LEFT CTRL is 0bit in modifier (HID Spec)
 // LEFT SHIFT is 1bit in modifier (HID Spec)
 tmp |= (PINF >> 3 ) & 0b00000100; // LEFT ALT is 2bit in modifier (HID Spec)
 tmp |= (PINF >> 1 ) & 0b00001000; // LEFT GUI is 3bit in modifier (HID Spec)
 //tmp |= (PINE << 1 ) & 0b00010000; // Caps Lock(Should not be in modifier
 } else {
 tmp = 0x00;
 tmp = (PINE >> 1)&0b00000001; 
 tmp |= PINC << 1 ;
 }
 return tmp;
 }

 inline
 static void unselect_rows(void)
 {
 // Hi-Z(DDR:0, PORT:0) to unselect
 // DDR : 1, output 0, input
 DDRB &= ~0b00000011; // PB: 1,0 
 PORTB &= ~0b00000011;
 DDRD &= ~0b00010000; // PD: 4
 PORTD &= ~0b00010000;
 DDRE &= ~0b11000000; // PE: 7,6
 PORTE &= ~0b11000000;
 DDRF &= ~0b11000111; // PF: 7,6,2,1,0 
 PORTF &= ~0b11000111;
 // to unselect virtual row(modifier), set port to output with low
 DDRB |= 0b00011000; // PB: 3,4 for modifier(row10)
 PORTB &= ~0b00011000;
 DDRF |= 0b00110000; // PF: 4,5 for modifier
 PORTF &= ~0b00110000;
 }

 inline
 static void select_row(uint8_t row)
 {
 // Output low(DDR:1, PORT:0) to select
 // with row enable, column could send low to AVR when pressed
 // row: 0 1 2 3 4 5 6 7 8 9
 // pin: PB1, PB0, PE7, PE6, PD4, PF2, PF0, PF1, PF6 PF7
 switch (row) {
 case 0:
 DDRB |= (1<<1);
 PORTB &= ~(1<<1);
 break;
 case 1:
 DDRB |= (1<<0);
 PORTB &= ~(1<<0);
 break;
 case 2:
 DDRE |= (1<<7);
 PORTE &= ~(1<<7);
 break;
 case 3:
 DDRE |= (1<<6);
 PORTE &= ~(1<<6);
 break;
 case 4:
 DDRD |= (1<<4);
 PORTD &= ~(1<<4);
 break;
 case 5:
 DDRF |= (1<<2);
 PORTF &= ~(1<<2);
 break;
 case 6:
 DDRF |= (1<<0);
 PORTF &= ~(1<<0);
 break;
 case 7:
 DDRF |= (1<<1);
 PORTF &= ~(1<<1);
 break;
 case 8:
 DDRF |= (1<<6);
 PORTF &= ~(1<<6);
 break;
 case 9:
 DDRF |= (1<<7);
 PORTF &= ~(1<<7);
 break;
 case 10:
 // modifier has no row enable
 // to select virtual row, set port as input
 DDRB &= ~0b00011000;
 PORTB |= 0b00011000;
 DDRF &= ~0b00110000;
 PORTF |= 0b00110000;
 break;

 }
 }