summaryrefslogtreecommitdiffstats
path: root/hhkb
diff options
context:
space:
mode:
Diffstat (limited to 'hhkb')
-rw-r--r--hhkb/Makefile72
-rw-r--r--hhkb/doc/HHKB.txt186
-rwxr-xr-xhhkb/doc/HHKB_TP1684.jpgbin0 -> 149082 bytes
-rwxr-xr-xhhkb/doc/HHKB_chart1.jpgbin0 -> 155342 bytes
-rwxr-xr-xhhkb/doc/HHKB_chart2.jpgbin0 -> 148225 bytes
-rwxr-xr-xhhkb/doc/HHKB_connector.jpgbin0 -> 193900 bytes
-rwxr-xr-xhhkb/doc/HHKB_controller.jpgbin0 -> 135100 bytes
-rwxr-xr-xhhkb/doc/HHKB_keyswitch.jpgbin0 -> 171469 bytes
-rwxr-xr-xhhkb/doc/connector_contact.jpgbin0 -> 192830 bytes
-rwxr-xr-xhhkb/doc/logic_analyzer.jpgbin0 -> 169564 bytes
-rwxr-xr-xhhkb/doc/probe_contact.jpgbin0 -> 208477 bytes
-rwxr-xr-xhhkb/doc/teensy_install.jpgbin0 -> 135851 bytes
-rwxr-xr-xhhkb/doc/teensy_wiring.jpgbin0 -> 154695 bytes
-rw-r--r--hhkb/keymap.c189
-rw-r--r--hhkb/keymap.h20
-rw-r--r--hhkb/matrix.c91
16 files changed, 558 insertions, 0 deletions
diff --git a/hhkb/Makefile b/hhkb/Makefile
new file mode 100644
index 0000000000..980980cfe8
--- /dev/null
+++ b/hhkb/Makefile
@@ -0,0 +1,72 @@
+# Hey Emacs, this is a -*- makefile -*-
+#----------------------------------------------------------------------------
+# WinAVR Makefile Template written by Eric B. Weddington, Jörg Wunsch, et al.
+#
+# Released to the Public Domain
+#
+# Additional material for this makefile was written by:
+# Peter Fleury
+# Tim Henigan
+# Colin O'Flynn
+# Reiner Patommel
+# Markus Pfaff
+# Sander Pool
+# Frederik Rouleau
+# Carlos Lamas
+#
+#----------------------------------------------------------------------------
+# 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, using avrdude.
+# Please customize the avrdude settings below first!
+#
+# 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 = tmk_hhkb
+
+# Directory common source filess exist
+COMMON_DIR = ..
+
+# Directory keyboard dependent files exist
+TARGET_DIR = .
+
+# keyboard dependent files
+TARGET_SRC = keymap.c \
+ matrix.c
+
+
+# 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
+
+include $(COMMON_DIR)/Makefile.common
diff --git a/hhkb/doc/HHKB.txt b/hhkb/doc/HHKB.txt
new file mode 100644
index 0000000000..9440efebf4
--- /dev/null
+++ b/hhkb/doc/HHKB.txt
@@ -0,0 +1,186 @@
+Alternative Controller for HHKB pro
+===================================
+I want to add vi cursor and mouse keys to HHKB. Original HHKB controller is not programmable and
+firmware source code is not open. So, customizing HHKB needs to replace original controller with programmable one.
+I used Teensy++ as alternative controller. Though a Teensy has enough ports to drive HHKB,
+Teensy++ has clean pinout and it makes programing and wiring easier.
+
+This is just a proof of concept for replacing controller of HHKB, not a complete firmware.
+
+My prototype firmware source tree is here:
+ branch: hhkb(http://github.com/tmk/tmk_keyboard/tree/hhkb)
+This firmware is a port of my previous project:
+ HHKB style Mod(http://geekhack.org/showwiki.php?title=Island:11930)
+PJRC:
+ Teensy++/Teensy(http://www.pjrc.com/teensy/)
+
+
+Pros:
+ * without pattern cutting, case mod and soldering
+ * can keep original controller intact
+ * can change HHKB behaviour as you like(by C programming)
+
+Cons:
+ * void your warranty
+ * unavailability of Teensy++/Teensy(because of PS3 cracking boom?)
+
+Features:
+ * customized keymap
+ * more keymap layers
+ * mouse keys for minimum mouse operation(never comfortable for normal use)
+ * and more...(in the future)
+
+Any suggestions or ideas are welcome.
+
+
+NOTE:
+ My HHKB is just "Professional". This means followings may not be applied to "Professional2".
+
+DISCLAIMER:
+ I'm not a professional for electronics and MCU programming. This may damage your HHKB.
+ And my English writing is poor, I'm not sure I can convey my notions accurately.
+
+
+Teensy++ installation
+---------------------
+Angled USB mini B adapter is used to install Teensy++ laterally.
+(teensy_install.jpg)
+
+Bread baord cables used for connect Teensy++.
+(teensy_wiring.jpg)
+(connector_contact.jpg)
+
+
+HHKB internal
+-------------
+HHKB pro has two PCBs and some chips.
+
+Controller PCB:
+ M38K07M4 Renesas MCU with USB function
+ http://documentation.renesas.com/eng/products/mpumcu/rej03b0192_38k0ds.pdf
+
+ (HHKB_controller.jpg)
+
+Keyswitch PCB:
+ HC4051 Analog Multiplexer: select a row line.
+ http://www.alldatasheet.com/datasheet-pdf/pdf/203989/KODENSHI/KK74HC4051A.html
+ LS145 BCD Decoder: select a column line.
+ http://www.alldatasheet.com/datasheet-pdf/pdf/27373/TI/SN74LS145D.html
+ BU9831 Non-volatile electronic potentiometer: for calibration?
+ http://www.alldatasheet.com/datasheet-pdf/pdf/36387/ROHM/BU9831.html
+ TP1684 Capacitive Sensing controller: no datasheet available.
+
+ (HHKB_keyswitch.jpg)
+
+ Topre original chip?
+ (HHKB_TP1684.jpg)
+
+
+Two PCBs are connected by 15 lines. Vcc/GND uses 3 lines each, 9lines for keyboard signaling.
+
+ Keyswitch PCB connector Teensy++ pins
+ -------------------------------------------------------------------------------
+ 1 Vcc(5V) 5V
+ 2 Vcc(5V)
+ 3 Vcc(5V)
+ 4 TP1684 KEY: Low(0) when key pressed PE6 input(with pullup)
+ 5 TP1684 unknown:how to use PE7 input(with pullup)
+ 6 HC4051 A(bit0) select 8 rows(0 to 7) PB0 output
+ 7 HC4051 B(bit1) PB1 output
+ 8 HC4051 C(bit2) PB2 output
+ 9 LS145 A(bit0) select 8 columns(0 to 7) PB3 output
+ 10 LS145 B(bit1) PB4 output
+ 11 LS145 C(bit2) PB5 output
+ 12 LS145 D(enable) Low(0) enable selected column PB6 output
+ 13 GND
+ 14 GND
+ 15 GND GND
+
+ (HHKB_connector.jpg)
+
+
+Keyswitch matrix
+----------------
+60 keyswitches in 8*8 matrix. ghost free. bounce free.
+
+ COL 0 1 2 3 4 5 6 7
+ROW ---------------------------------------------------------------
+ 0| 2 q w s a z x c
+ 1| 3 4 r e d f v b
+ 2| 5 6 y t g h n _NONE_
+ 3| 1 Esc Tab Control LShift LAlt LMeta Space
+ 4| 7 8 u i k j m _NONE_
+ 5| \ ` Delete Return Fn RShift RAlt RMeta
+ 6| 9 0 o p ; l , _NONE_
+ 7| - + ] [ ' / . _NONE_
+
+
+Matrix diagram:
+ +-------------------------+-+-+-+-+-+-+-+ Vcc
+ |bias control? - - - - - - - - ---
+ | 3.9K*8 R R R R R R R R |
+ +--------^+ +--------+ - - - - - - - - |
+ | TP 1684 | | HC4051 <0-------|-|-|-|-|-|-|-|--|R|-+
+ | |capa. | <1-------|-|-|-|-|-|-|-|--|R|-+
+ | |sense | <2-------|-|-|-|-|-|-|-|--|R|-+
+ | <------| <3-------|-|-|-|-|-|-|-|--|R|-+
+ | | | <4-------|-|-|-|-|-|-|-|--|R|-+
+ | | | <5-------|-|-|-|-|-|-|-|--|R|-+
+ | |calib.| <6-------|-|-|-|-|-|-|-|--|R|-+
+ | <-+? | <7-------|-|-|-|-|-|-|-|--|R|-+
+ +---V-----+ | +-^-^-^--+ 0 1 2 3 4 5 6 7 33K*8
+ KEY ??? | A B C +-----------------+
+ | | +-^----+ | | | | LS145 |
+ Vcc | | |BU9831| | | | +-^--^--^--^------+
+ --- | | +------+ | | | A B C D +------+
+ | | | | | | | | | | | |
+ 1-3 4 5 6 7 8 9 10 11 12 13-15 |
+ +--------------------------------------------------+ |
+ | connector | ---
+ +--------------------------------------------------+ GND
+ to controller
+
+
+Signals charts:
+ While pressing space bar, watched HHKB original controller signals by logic analyzer.
+ Row and column is looping between 0-7 each for selecting a key.
+ A key is scaned every about 15ms, so scan rate is 66Hz.
+
+ (HHKB_chart1.jpg)
+
+ Space bar locate at ROW:3 COL:7. Key are selected by HC4051(C,B,A) and LS145(C,B,A).
+ Key state can be read on TP1684(4/KEY) while asserting low on LS145(D).
+ Usage of TP1684(5) is unknown. Key state can be read without using this signal.
+
+ (HHKB_chart2.jpg)
+
+
+Matrix scan pseudo code:
+ for (row: 0-7) {
+ SELECT_ROW(row); // set HC4051(A,B,C)
+
+ for (col: 0-7) {
+ SELECT_COL(col); // set LS145(A,B,C)
+
+ _delay_us(50);
+
+ ENALBLE_COL(); // set LS145(D) to low
+
+ _delay_us(10);
+
+ if (KEY == 0) { // read TP1684(KEY)
+ // key pressed
+ } else {
+ // not pressed
+ }
+ }
+ }
+
+
+Keymap layers
+-------------
+Followings are added layers with additional Fn keys. They are not final decision.
+
+see keymap_hhkb.c
+
+EOF
diff --git a/hhkb/doc/HHKB_TP1684.jpg b/hhkb/doc/HHKB_TP1684.jpg
new file mode 100755
index 0000000000..0a03164094
--- /dev/null
+++ b/hhkb/doc/HHKB_TP1684.jpg
Binary files differ
diff --git a/hhkb/doc/HHKB_chart1.jpg b/hhkb/doc/HHKB_chart1.jpg
new file mode 100755
index 0000000000..1f09bd185c
--- /dev/null
+++ b/hhkb/doc/HHKB_chart1.jpg
Binary files differ
diff --git a/hhkb/doc/HHKB_chart2.jpg b/hhkb/doc/HHKB_chart2.jpg
new file mode 100755
index 0000000000..45f5ada905
--- /dev/null
+++ b/hhkb/doc/HHKB_chart2.jpg
Binary files differ
diff --git a/hhkb/doc/HHKB_connector.jpg b/hhkb/doc/HHKB_connector.jpg
new file mode 100755
index 0000000000..e8a09e9b28
--- /dev/null
+++ b/hhkb/doc/HHKB_connector.jpg
Binary files differ
diff --git a/hhkb/doc/HHKB_controller.jpg b/hhkb/doc/HHKB_controller.jpg
new file mode 100755
index 0000000000..e3dae8e86c
--- /dev/null
+++ b/hhkb/doc/HHKB_controller.jpg
Binary files differ
diff --git a/hhkb/doc/HHKB_keyswitch.jpg b/hhkb/doc/HHKB_keyswitch.jpg
new file mode 100755
index 0000000000..3afc269e7b
--- /dev/null
+++ b/hhkb/doc/HHKB_keyswitch.jpg
Binary files differ
diff --git a/hhkb/doc/connector_contact.jpg b/hhkb/doc/connector_contact.jpg
new file mode 100755
index 0000000000..5304bc8d7e
--- /dev/null
+++ b/hhkb/doc/connector_contact.jpg
Binary files differ
diff --git a/hhkb/doc/logic_analyzer.jpg b/hhkb/doc/logic_analyzer.jpg
new file mode 100755
index 0000000000..f1b438ae77
--- /dev/null
+++ b/hhkb/doc/logic_analyzer.jpg
Binary files differ
diff --git a/hhkb/doc/probe_contact.jpg b/hhkb/doc/probe_contact.jpg
new file mode 100755
index 0000000000..dc79afa0cc
--- /dev/null
+++ b/hhkb/doc/probe_contact.jpg
Binary files differ
diff --git a/hhkb/doc/teensy_install.jpg b/hhkb/doc/teensy_install.jpg
new file mode 100755
index 0000000000..873d988edb
--- /dev/null
+++ b/hhkb/doc/teensy_install.jpg
Binary files differ
diff --git a/hhkb/doc/teensy_wiring.jpg b/hhkb/doc/teensy_wiring.jpg
new file mode 100755
index 0000000000..1c4eb67434
--- /dev/null
+++ b/hhkb/doc/teensy_wiring.jpg
Binary files differ
diff --git a/hhkb/keymap.c b/hhkb/keymap.c
new file mode 100644
index 0000000000..d7e6bbe3be
--- /dev/null
+++ b/hhkb/keymap.c
@@ -0,0 +1,189 @@
+/*
+ * keymap for HHKB pro
+ */
+#include <stdbool.h>
+#include <avr/pgmspace.h>
+#include "matrix.h"
+#include "keymap.h"
+#include "usb_keyboard.h"
+
+int current_layer = 0;
+bool key_sent = false;
+
+/*
+ * Layer0(Default Layer)
+ * ,-----------------------------------------------------------.
+ * |Esc| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =| \| `|
+ * |-----------------------------------------------------------|
+ * |Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]|Backs|
+ * |-----------------------------------------------------------|
+ * |Contro| A| S| D| F| G| H| J| K| L| ;| '|Return |
+ * |-----------------------------------------------------------|
+ * |Shift | Z| X| C| V| B| N| M| ,| .| /|Fn2 |Fn1|
+ * `-----------------------------------------------------------'
+ * |Gui|Alt |Space |Fn3 |Gui|
+ * `-------------------------------------------'
+ *
+ * Layer1(Fn) HHKB mode
+ * ,-----------------------------------------------------------.
+ * |Pow| F1| F2| F3| F4| F5| F6| F7| F8| F9|F10|F11|F12|Ins|Del|
+ * |-----------------------------------------------------------|
+ * |Caps | | | | | | | |Psc|Slk|Pus|Up | |Backs|
+ * |-----------------------------------------------------------|
+ * |Contro|VoD|VoU|Mut| | | *| /|Hom|PgU|Lef|Rig|Enter |
+ * |-----------------------------------------------------------|
+ * |Shift | | | | | | +| -|End|PgD|Dow|Shift |xxx|
+ * `-----------------------------------------------------------'
+ * |Gui |Alt |Space |Alt |Gui|
+ * `--------------------------------------------'
+ *
+ * Layer3(RALT) vi mode
+ * ,-----------------------------------------------------------.
+ * |Esc| F1| F2| F3| F4| F5| F6| F7| F8| F9|F10|F11|F12|Ins|Del|
+ * |-----------------------------------------------------------|
+ * |Tab | | | | | |Hom|PgD|PgUlEnd| | | |Backs|
+ * |-----------------------------------------------------------|
+ * |Contro| | | | | |Lef|Dow|Up |Rig| | |Return |
+ * |-----------------------------------------------------------|
+ * |Shift | | | | | |McL|McD|McU|McR|Mb1|Mb2 | |
+ * `-----------------------------------------------------------'
+ * |Gui|Alt |Sapce |xxxxx|Mb3|
+ * `-------------------------------------------'
+ *
+ * Layer4(semicolon) mouse mode
+ * ,-----------------------------------------------------------.
+ * |Esc| | | | | | | | | | | | | | |
+ * |-----------------------------------------------------------|
+ * |Tab | | | | | |MwL|MwD|MwU|MwR| | | |Backs|
+ * |-----------------------------------------------------------|
+ * |Contro| | | | | |McL|McD|McU|McR|xxx| |Return |
+ * |-----------------------------------------------------------|
+ * |Shift | | | | | | |Mb1|Mb2|Mb3| |Shift | |
+ * `-----------------------------------------------------------'
+ * |Gui |Alt |Mb1 |Alt |Gui|
+ * `--------------------------------------------'
+ *
+ * Mc: Mouse Cursor / Mb: Mouse Button / Mw: Mouse Wheel
+ */
+
+/* keycode sent when Fn key released without using layer keys. */
+static const uint8_t PROGMEM FnKey[] = {
+ KB_NO, // this must be KB_NO. (not used)
+ KB_NO, // FN_1
+ KB_RALT, // FN_2
+ KB_SCOLON, // FN_3
+};
+
+static const uint8_t PROGMEM Keymap[][MATRIX_ROWS][MATRIX_COLS] = {
+/* plain keymap
+ {
+ { KB_2, KB_Q, KB_W, KB_S, KB_A, KB_Z, KB_X, KB_C },
+ { KB_3, KB_4, KB_R, KB_E, KB_D, KB_F, KB_V, KB_B },
+ { KB_5, KB_6, KB_Y, KB_T, KB_G, KB_H, KB_N, KB_NO },
+ { KB_1, KB_ESCAPE, KB_TAB, KB_LCTRL, KB_LSHIFT, KB_LGUI, KB_LALT, KB_SPACE },
+ { KB_7, KB_8, KB_U, KB_I, KB_K, KB_J, KB_M, KB_NO },
+ { KB_BSLASH, KB_GRAVE, KB_BSPACE, KB_ENTER, FN_1, KB_RSHIFT, KB_RGUI, KB_RALT },
+ { KB_9, KB_0, KB_O, KB_P, KB_SCOLON, KB_L, KB_COMMA, KB_NO },
+ { KB_MINUS, KB_EQUAL, KB_RBRACKET,KB_LBRACKET,KB_QUOTE, KB_SLASH, KB_DOT, KB_NO },
+ },
+*/
+ // 0: default
+ {
+ { KB_2, KB_Q, KB_W, KB_S, KB_A, KB_Z, KB_X, KB_C },
+ { KB_3, KB_4, KB_R, KB_E, KB_D, KB_F, KB_V, KB_B },
+ { KB_5, KB_6, KB_Y, KB_T, KB_G, KB_H, KB_N, KB_NO },
+ { KB_1, KB_ESCAPE, KB_TAB, KB_LCTRL, KB_LSHIFT, KB_LGUI, KB_LALT, KB_SPACE },
+ { KB_7, KB_8, KB_U, KB_I, KB_K, KB_J, KB_M, KB_NO },
+ { KB_BSLASH, KB_GRAVE, KB_BSPACE, KB_ENTER, FN_1, KB_RSHIFT, KB_RGUI, FN_2 },
+ { KB_9, KB_0, KB_O, KB_P, FN_3, KB_L, KB_COMMA, KB_NO },
+ { KB_MINUS, KB_EQUAL, KB_RBRACKET,KB_LBRACKET,KB_QUOTE, KB_SLASH, KB_DOT, KB_NO },
+ },
+ // 1: FN_1 HHKB mode(Fn)
+ {
+ { KB_F2, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO },
+ { KB_F3, KB_F4, KB_NO, KB_NO, KB_MUTE, KB_F20, KB_NO, KB_NO },
+ { KB_F5, KB_F6, KB_NO, KB_NO, KB_NO, KP_ASTERISK,KP_PLUS, KB_NO },
+ { KB_F1, KB_POWER, KB_CAPSLOCK,KB_LCTRL, KB_LSHIFT, KB_LGUI, KB_LALT, KB_SPACE },
+ { KB_F7, KB_F8, KB_NO, KB_PSCREEN, KB_HOME, KP_SLASH, KB_MINUS, KB_NO },
+ { KB_INSERT, KB_DELETE, KB_BSPACE, KP_ENTER, KB_NO, KB_RSHIFT, KB_RGUI, KB_RALT },
+ { KB_F9, KB_F10, KB_SCKLOCK, KB_BREAK, KB_LEFT, KB_PGUP, KB_END, KB_NO },
+ { KB_F11, KB_F12, KB_NO, KB_UP, KB_RIGHT, KB_DOWN, KB_PGDOWN, KB_NO },
+ },
+ // 2: FN_2 vi mode(RALT)
+ {
+ { KB_F2, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO },
+ { KB_F3, KB_F4, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO },
+ { KB_F5, KB_F6, KB_HOME, KB_NO, KB_NO, KB_LEFT, MS_LEFT, KB_NO },
+ { KB_F1, KB_ESCAPE, KB_TAB, KB_LCTRL, KB_LSHIFT, KB_LGUI, KB_LALT, KB_SPACE },
+ { KB_F7, KB_F8, KB_PGDOWN, KB_PGUP, KB_UP, KB_DOWN, MS_DOWN, KB_NO },
+ { KB_INSERT, KB_DELETE, KB_BSPACE, KB_ENTER, KB_NO, MS_BTN2, MS_BTN3, KB_NO },
+ { KB_F9, KB_F10, KB_END, KB_NO, KB_NO, KB_RIGHT, MS_UP, KB_NO },
+ { KB_F11, KB_F12, MS_WH_UP, MS_WH_DOWN, KB_NO, MS_BTN1, MS_RIGHT, KB_NO },
+ },
+ // 3: FN_3 vi mouse mode(SCOLON)
+ {
+ { KB_F2, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO },
+ { KB_F3, KB_F4, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO, KB_NO },
+ { KB_F5, KB_F6, MS_WH_LEFT, KB_NO, KB_NO, MS_LEFT, KB_NO, KB_NO },
+ { KB_F1, KB_ESCAPE, KB_TAB, KB_LCTRL, KB_LSHIFT, KB_LGUI, KB_LALT, MS_BTN1 },
+ { KB_F7, KB_F8, MS_WH_DOWN, MS_WH_UP, MS_UP, MS_DOWN, MS_BTN1, KB_NO },
+ { KB_NO, KB_NO, KB_BSPACE, KB_ENTER, KB_NO, KB_RSHIFT, KB_RGUI, KB_RALT },
+ { KB_F9, KB_F10, MS_WH_RIGHT,KB_NO, KB_NO, MS_RIGHT, MS_BTN2, KB_NO },
+ { KB_F11, KB_F12, KB_NO, KB_NO, KB_NO, KB_NO, MS_BTN3, KB_NO },
+ },
+};
+
+
+uint8_t get_keycode(int layer, int row, int col)
+{
+ if (row >= MATRIX_ROWS)
+ return KB_NO;
+ if (col >= MATRIX_COLS)
+ return KB_NO;
+ return pgm_read_byte(&Keymap[layer][row][col]);
+}
+
+int get_layer(void) {
+ // keep modifier state when Fn key pressed
+ static uint8_t preserved_modifiers = 0;
+ int layer = 0;
+ uint8_t modifiers = 0;
+ for (int row = 0; row < MATRIX_ROWS; row++) {
+ for (int col = 0; col < MATRIX_ROWS; col++) {
+ if (matrix[row] & 1<<col) continue; // NOT pressed
+ uint8_t code = get_keycode(0, row, col);
+ if (code == FN_1) layer = 1;
+ else if (code == FN_2) layer = 2;
+ else if (code == FN_3) layer = 3;
+ else if (code == FN_4) layer = 4;
+ else if (KB_LCTRL <= code && code <= KB_RGUI)
+ modifiers |= 1<<(code & 0x07);
+ }
+ }
+
+ // TODO: this logic should go anywhere
+ // TODO: need timeout for key_sent
+ // send key when Fn key reloeased without used
+ if (layer != current_layer) {
+ if (layer == 0 && !key_sent) {
+ uint8_t code = pgm_read_byte(&FnKey[current_layer]);
+ if (code) {
+ // send modifiers when Fn key pressed.
+ keyboard_modifier_keys = preserved_modifiers;
+ for (int i = 0; i < 6; i++) keyboard_keys[i] = KB_NO;
+
+ if (KB_LCTRL <= code && code <= KB_RGUI) {
+ keyboard_modifier_keys |= 1<<(code & 0x07);
+ } else {
+ keyboard_keys[0] = code;
+ }
+ usb_keyboard_send();
+ }
+ }
+ current_layer = layer;
+ key_sent = false;
+ preserved_modifiers = modifiers;
+ }
+
+ return current_layer;
+}
diff --git a/hhkb/keymap.h b/hhkb/keymap.h
new file mode 100644
index 0000000000..be78609e61
--- /dev/null
+++ b/hhkb/keymap.h
@@ -0,0 +1,20 @@
+#ifndef KEYMAP_H
+#define KEYMAP_H 1
+
+#include <stdint.h>
+#include <stdbool.h>
+#include "usb_keycodes.h"
+
+
+#define MATRIX_ROWS 8
+#define MATRIX_COLS 8
+
+
+extern int current_layer;
+extern bool key_sent;
+
+
+int get_layer(void);
+uint8_t get_keycode(int layer, int row, int col);
+
+#endif
diff --git a/hhkb/matrix.c b/hhkb/matrix.c
new file mode 100644
index 0000000000..3034a63612
--- /dev/null
+++ b/hhkb/matrix.c
@@ -0,0 +1,91 @@
+/*
+ * scan matrix
+ */
+#include <avr/io.h>
+#include <util/delay.h>
+#include "keymap.h"
+#include "matrix.h"
+#include "print.h"
+
+// matrix is active low. (key on: 0/key off: 1)
+//
+// HHKB has no ghost and no bounce.
+// row: HC4051 select input channel(0-8)
+// PB0, PB1, PB2(A, B, C)
+// col: LS145 select low output line(0-8)
+// PB3, PB4, PB5, PB6(A, B, C, D)
+// use D as ENABLE: (enable: 0/unenable: 1)
+// key: KEY: (on: 0/ off:1)
+// UNKNOWN: unknown whether input or output
+// PE6,PE7(KEY, UNKNOWN)
+#define COL_ENABLE (1<<6)
+#define KEY_SELELCT(ROW, COL) (PORTB = COL_ENABLE|(((COL)&0x07)<<3)|((ROW)&0x07))
+#define KEY_ENABLE (PORTB &= ~COL_ENABLE)
+#define KEY_UNABLE (PORTB |= COL_ENABLE)
+#define KEY_ON ((PINE&(1<<6)) ? false : true)
+
+// matrix state buffer
+uint8_t *matrix;
+uint8_t *matrix_prev;
+static uint8_t _matrix0[MATRIX_ROWS];
+static uint8_t _matrix1[MATRIX_ROWS];
+
+
+// this must be called once before matrix_scan.
+void matrix_init(void)
+{
+ // row & col output(PB0-6)
+ DDRB = 0xFF;
+ PORTB = KEY_SELELCT(0, 0);
+ // KEY & VALID input with pullup(PE6,7)
+ DDRE = 0x3F;
+ PORTE = 0xC0;
+
+ // initialize matrix state: all keys off
+ for (int i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0xFF;
+ for (int i=0; i < MATRIX_ROWS; i++) _matrix1[i] = 0xFF;
+ matrix = _matrix0;
+ matrix_prev = _matrix1;
+}
+
+uint8_t matrix_scan(void)
+{
+ uint8_t *tmp;
+
+ tmp = matrix_prev;
+ matrix_prev = matrix;
+ matrix = tmp;
+
+ for (int row = 0; row < MATRIX_ROWS; row++) {
+ for (int col = 0; col < MATRIX_COLS; col++) {
+ KEY_SELELCT(row, col);
+ _delay_us(50); // from logic analyzer chart
+ KEY_ENABLE;
+ _delay_us(10); // from logic analyzer chart
+ if (KEY_ON) {
+ matrix[row] &= ~(1<<col);
+ } else {
+ matrix[row] |= (1<<col);
+ }
+ KEY_UNABLE;
+ _delay_us(150); // from logic analyzer chart
+ }
+ }
+ return 1;
+}
+
+bool matrix_is_modified(void) {
+ for (int i=0; i <MATRIX_ROWS; i++) {
+ if (matrix[i] != matrix_prev[i])
+ return true;
+ }
+ return false;
+}
+
+bool matrix_has_ghost(void) {
+ return false;
+}
+
+bool matrix_has_ghost_in_row(uint8_t row) {
+ return false;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 06:45:19 +0000