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-rw-r--r--keyboards/handwired/datahand/config.h87
-rw-r--r--keyboards/handwired/datahand/datahand.h133
-rw-r--r--keyboards/handwired/datahand/keymaps/default/keymap.c313
-rw-r--r--keyboards/handwired/datahand/matrix.c125
-rw-r--r--keyboards/handwired/datahand/readme.md15
-rw-r--r--keyboards/handwired/datahand/rules.mk59
6 files changed, 732 insertions, 0 deletions
diff --git a/keyboards/handwired/datahand/config.h b/keyboards/handwired/datahand/config.h
new file mode 100644
index 0000000000..1ba8479f0a
--- /dev/null
+++ b/keyboards/handwired/datahand/config.h
@@ -0,0 +1,87 @@
+/* Copyright 2017-2019 Nikolaus Wittenstein <nikolaus.wittenstein@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#pragma once
+
+#include "config_common.h"
+
+/* USB Device descriptor parameter */
+/* Taken from the DataHand PS/2-USB adaptor. */
+#define VENDOR_ID 0x13BA
+#define PRODUCT_ID 0x0017
+#define DEVICE_VER 0x0001
+#define MANUFACTURER DataHand
+#define PRODUCT DataHand
+#define DESCRIPTION DataHand Teensy++ 2.0 conversion
+
+/* key matrix size */
+#define MATRIX_ROWS 13
+#define MATRIX_COLS 4
+
+#define DIODE_DIRECTION CUSTOM_MATRIX
+
+/* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
+#define DEBOUNCING_DELAY 0
+
+/* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
+#define LOCKING_SUPPORT_ENABLE
+/* Locking resynchronize hack */
+#define LOCKING_RESYNC_ENABLE
+
+/*
+ * Force NKRO
+ *
+ * Force NKRO (nKey Rollover) to be enabled by default, regardless of the saved
+ * state in the bootmagic EEPROM settings. (Note that NKRO must be enabled in the
+ * makefile for this to work.)
+ *
+ * If forced on, NKRO can be disabled via magic key (default = LShift+RShift+N)
+ * until the next keyboard reset.
+ *
+ * NKRO may prevent your keystrokes from being detected in the BIOS, but it is
+ * fully operational during normal computer usage.
+ *
+ * For a less heavy-handed approach, enable NKRO via magic key (LShift+RShift+N)
+ * or via bootmagic (hold SPACE+N while plugging in the keyboard). Once set by
+ * bootmagic, NKRO mode will always be enabled until it is toggled again during a
+ * power-up.
+ */
+#define FORCE_NKRO
+
+/*
+ * Magic Key Options
+ *
+ * Magic keys are hotkey commands that allow control over firmware functions of
+ * the keyboard. They are best used in combination with the HID Listen program,
+ * found here: https://www.pjrc.com/teensy/hid_listen.html
+ *
+ * The options below allow the magic key functionality to be changed. This is
+ * useful if your keyboard/keypad is missing keys and you want magic key support.
+ */
+
+/* key combination for magic key command */
+#define IS_COMMAND() ( \
+ keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
+)
+
+/*
+ * Command/Windows key option
+ *
+ * If you define this, the thumb enter key becomes the Command/Windows key. There's still an enter key on the right
+ * ring finger, so this key is much better utilized as the otherwise nonexistent Command key. I think some newer
+ * DataHands let you remap right ring east as Command, but having it on the thumb is nicer. Comment out this define
+ * to use the original layout.
+ */
+#define DATAHAND_THUMB_RETURN_COMMAND
diff --git a/keyboards/handwired/datahand/datahand.h b/keyboards/handwired/datahand/datahand.h
new file mode 100644
index 0000000000..cb9a4d3e3b
--- /dev/null
+++ b/keyboards/handwired/datahand/datahand.h
@@ -0,0 +1,133 @@
+/* Copyright 2017-2019 Nikolaus Wittenstein <nikolaus.wittenstein@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#pragma once
+
+#include "quantum.h"
+
+/* This a shortcut to help you visually see your layout.
+ * The first section contains all of the arguements; the second converts the arguments into a two-dimensional array.
+ */
+
+/* Each code is three letters
+ * l or r - left or right hand
+ * p, r, m, i, t - pinky, ring finger, middle finger, index finger, thumb
+ * fingers: n, s, e, w, c - north, south, east, west, and center (manual calls this "well" but we already have "west")
+ * thumb: p, n, c, l, u, k - pad, nail, center, lock (harder center), up, knuckle
+ */
+#define LAYOUT( \
+ lpn, lrn, lmn, lin, rin, rmn, rrn, rpn, \
+lpw, lpc, lpe, lrw, lrc, lre, lmw, lmc, lme, liw, lic, lie, riw, ric, rie, rmw, rmc, rme, rrw, rrc, rre, rpw, rpc, rpe, \
+ lps, lrs, lms, lis, ris, rms, rrs, rps, \
+ ltp, ltn, rtn, rtp, \
+ ltc, rtc, \
+ ltl, rtl, \
+ ltu, ltk, rtk, rtu) \
+{ \
+ {riw, rin, lpw, lpn},\
+ {ric, rie, lpc, lpe},\
+ {ris, rms, lps, lrs},\
+ {rmw, rmn, lrw, lrn},\
+ {rmc, rme, lrc, lre},\
+ {rrw, rrn, lmw, lmn},\
+ {rrc, rre, lmc, lme},\
+ {rrs, rps, lms, lis},\
+ {rpw, rpn, liw, lin},\
+ {rpc, rpe, lic, lie},\
+ {rtk, rtn, ltk, ltn},\
+ {rtc, rtl, ltc, ltl},\
+ {rtp, rtu, ltp, ltu},\
+}
+
+/* Mode LEDs are active-low on Port B on the Teensy. */
+#define LED_MODE_PORT PORTB
+#define LED_TENKEY (1<<3)
+#define LED_FN (1<<4)
+#define LED_NORMAL (1<<5)
+#define LED_NAS (1<<6)
+
+/* Lock LEDs are active-low on Port F on the Teensy. */
+#define LED_LOCK_PORT PORTF
+#define LED_CAPS_LOCK (1<<4)
+#define LED_MOUSE_LOCK (1<<5)
+#define LED_NUM_LOCK (1<<6)
+#define LED_SCROLL_LOCK (1<<7)
+
+
+/* Appendix:
+ * Table based on https://geekhack.org/index.php?topic=12212.msg2059319#msg2059319
+ * Some pin assignments (e.g. for PS/2 I/O) have been fixed.
+ *
+ * Teensy Datahand 8051 pin pin 8051 Datahand Teensy
+ * ------ -------- ---- --- --- ---- -------- ------
+ * GND Mtrx send A P1.0 1 40 VCC VCC VCC
+ * PB7 Mtrx send B P1.1 2 39 P0.0 LED RH NAS PB6
+ * PD0 Mtrx send C P1.2 3 38 P0.1 LED RH NORM PB5
+ * PD1 Mtrx send D P1.3 4 37 P0.2 LED RH FCTN PB4
+ * PD2 RH rcv 0 P1.4 5 36 P0.3 LED RH 10K PB3
+ * PD3 RH rcv 1 P1.5 6 35 P0.4 LED RH unused PB2
+ * PD4 LH rcv 0 P1.6 7 34 P0.5 LED RH unused PE1
+ * PD5 LH rcv 1 P1.7 8 33 P0.6 LED RH unused PE0
+ * PD6 Reset button RST 9 32 P0.7 ? PE7
+ * PD7 ? P3.0 10 31 VPP - PE6
+ * PE0 ? P3.1 11 30 ALE - GND
+ * PE1 kbd data P3.2 12 29 PSEN - AREF
+ * PC0 ? P3.3 13 28 P2.7 ? PF0
+ * PC1 kbd clk P3.4 14 27 P2.6 ? PF1
+ * PC2 ? P3.5 15 26 P2.5 ? PF2
+ * PC3 RAM P3.6 16 25 P2.4 ? PF3
+ * PC4 RAM P3.7 17 24 P2.3 LED D15 LH (CAPLK) PF4
+ * PC5 XTAL2 XTAL2 18 23 P2.2 LED D13 LH (MSELK) PF5
+ * PC6 XTAL1 XTAL1 19 22 P2.1 LED D6 LH (NUMLK) PF6
+ * PC7 GND GND 20 21 P2.0 LED D14 LH (SCRLK) PF7
+ *
+ * JP3 Pinout
+ * 2 - keyboard data
+ * 3 - keyboard clock
+ *
+ * In order to get the Teensy to work, we need to move pin 1 to a different pin. This is
+ * because on the Teensy pin 1 is ground, but we need to write to pin 1 in order to read
+ * the keyboard matrix. An ideal pin to move it to is VPP (pin 31), because this pin tells
+ * the 8051 whether it should read from external or internal memory. The Teensy doesn't
+ * care about that.
+ *
+ * The easiest way to reassign the pin is to use standoffs. You can check out this thread:
+ * https://geekhack.org/index.php?topic=12212.msg235382#msg235382 for a picture of what
+ * this looks like. Note that in the picture the pin has been reassigned to pin 12. We
+ * don't want to do that because we're going to use that pin to send data over PS/2.
+ *
+ * We could if we wanted also reassign the PS/2 pins to Teensy hardware UART pins, but
+ * that's more work. Instead we'll just bit-bang PS/2 because it's an old, slow protocol
+ * (and because there's already a bit-banged PS/2 host implementation in QMK - we just
+ * need to add the device side).
+ *
+ * So overall, we want the following inputs and outputs:
+ * Outputs:
+ * Matrix:
+ * PB7
+ * PD0
+ * PD1
+ * PE6 (moved from pin1, GND)
+ * LEDs:
+ * PB3-6
+ * PF4-7
+ * Inputs:
+ * Matrix:
+ * PD2-5
+ * I/Os (start up as inputs):
+ * PS/2:
+ * PC1
+ * PE1
+ */
diff --git a/keyboards/handwired/datahand/keymaps/default/keymap.c b/keyboards/handwired/datahand/keymaps/default/keymap.c
new file mode 100644
index 0000000000..8f44535594
--- /dev/null
+++ b/keyboards/handwired/datahand/keymaps/default/keymap.c
@@ -0,0 +1,313 @@
+/* Copyright 2017-2019 Nikolaus Wittenstein <nikolaus.wittenstein@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include QMK_KEYBOARD_H
+
+#include <stdbool.h>
+
+/* Datahand features not supported:
+ * * All online reprogramming (user settings using the reset button).
+ * * Program Selection features.
+ * * Macros.
+ * * Direct substitutions.
+ * * L/R Modf.
+ * * Mouse Click Lock (Function Direct Access + Mouse Button key).
+ * * Different mouse movement speeds with the two pointer fingers, and using both pointer fingers to move even faster.
+ *
+ * As far as I know, everything else works.
+ */
+
+enum layer {
+ NORMAL,
+#ifdef DATAHAND_THUMB_RETURN_COMMAND
+ NORMAL_THUMB_RETURN_COMMAND,
+#endif
+ FUNCTION_MOUSE,
+ FUNCTION_ARROWS,
+ NAS,
+ NAS_NUMLOCK,
+ NAS_TENKEY,
+ NAS_TENKEY_NUMLOCK,
+
+ NUM_LAYERS
+};
+
+enum custom_keycodes {
+ N = SAFE_RANGE, /* Normal */
+ NS, /* NAS */
+ NSL, /* NAS Lock */
+ NLK, /* Numlock */
+ FN, /* Function mode - needs to be able to switch to mouse or arrow layer */
+ TK0, /* Ten-key off button */
+ TK1, /* Ten-key on button */
+ AR, /* FN arrow mode */
+ MS, /* FN mouse mode */
+ DZ, /* Double zero button */
+};
+
+static bool mouse_enabled = true;
+static bool tenkey_enabled = false;
+static bool numlock_enabled = false;
+static bool nas_locked = false;
+
+/* Declared weak so that it can easily be overridden. */
+__attribute__((weak)) const uint16_t PROGMEM keymaps[NUM_LAYERS][MATRIX_ROWS][MATRIX_COLS] = {
+[NORMAL] = LAYOUT(
+ KC_Q, KC_W, KC_E, KC_R, KC_U, KC_I, KC_O, KC_P,
+KC_DEL, KC_A, KC_LBRC, KC_ESC, KC_S, KC_B, KC_GRV, KC_D, KC_T, KC_DQT, KC_F, KC_G, KC_H, KC_J, KC_QUOT, KC_Y, KC_K, KC_COLN, KC_N, KC_L, KC_ENT, KC_RBRC, KC_SCLN, KC_BSLS,
+ KC_Z, KC_X, KC_C, KC_V, KC_M, KC_COMM, KC_DOT, KC_SLSH,
+ KC_ENT, KC_TAB, KC_BSPC, KC_SPC,
+ KC_LSFT, NS,
+ KC_CAPS, NSL,
+ N, KC_LCTL, KC_LALT, FN),
+
+#ifdef DATAHAND_THUMB_RETURN_COMMAND
+[NORMAL_THUMB_RETURN_COMMAND] = LAYOUT(
+ _______, _______, _______, _______, _______, _______, _______, _______,
+_______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+ _______, _______, _______, _______, _______, _______, _______, _______,
+ KC_LCMD, _______, _______, _______,
+ _______, _______,
+ _______, _______,
+ _______, _______, _______, _______),
+#endif
+
+[FUNCTION_MOUSE] = LAYOUT(
+ KC_F2, KC_F4, KC_F6, KC_MS_U, KC_MS_U, KC_F8, KC_F10, KC_PGUP,
+_______, KC_NO, KC_SLCK, _______, KC_BTN3, NLK, KC_BTN1, MS, KC_BTN2, KC_MS_L, KC_BTN1, KC_MS_R, KC_MS_L, KC_BTN2, KC_MS_R, KC_END, AR, KC_LSFT, KC_INS, KC_9, KC_ENT, KC_F11, KC_0, KC_F12,
+ KC_F1, KC_F3, KC_F5, KC_MS_D, KC_MS_D, KC_F7, KC_F9, KC_PGDN,
+ _______, _______, _______, _______,
+ _______, _______,
+ _______, _______,
+ _______, _______, _______, _______),
+[FUNCTION_ARROWS] = LAYOUT(
+ _______, _______, _______, KC_UP, KC_UP, _______, _______, _______,
+_______, _______, _______, _______, KC_LCTL, _______, _______, _______, _______, KC_LEFT, KC_HOME, KC_RGHT, KC_LEFT, KC_HOME, KC_RGHT, _______, _______, _______, _______, _______, _______, _______, _______, _______,
+ _______, _______, _______, KC_DOWN, KC_DOWN, _______, _______, _______,
+ _______, _______, _______, _______,
+ _______, _______,
+ _______, _______,
+ _______, _______, _______, _______),
+[NAS] = LAYOUT(
+ KC_EXLM, KC_AT, KC_HASH, KC_DLR, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN,
+_______, KC_1, KC_TILD, _______, KC_2, NLK, KC_LABK, KC_3, KC_RABK, KC_SLSH, KC_4, KC_5, KC_6, KC_7, KC_UNDS, KC_CIRC, KC_8, KC_ENT, KC_SCLN, KC_9, KC_BSLS, TK0, KC_0, TK1,
+ KC_EQL, KC_X, KC_PERC, KC_MINS, KC_PLUS, KC_DOT, KC_SLSH, KC_QUES,
+ _______, _______, _______, _______,
+ _______, _______,
+ _______, _______,
+ _______, _______, _______, _______),
+[NAS_NUMLOCK] = LAYOUT(
+ _______, _______, _______, _______, _______, KC_PAST, _______, _______,
+_______, KC_KP_1, _______, _______, KC_KP_2, _______, _______, KC_KP_3, _______, KC_PSLS, KC_KP_4, KC_KP_5, KC_KP_6, KC_KP_7, _______, _______, KC_KP_8, _______, _______, KC_KP_9, KC_PENT, _______, KC_KP_0, _______,
+ KC_PEQL, _______, _______, KC_PMNS, KC_PPLS, _______, KC_PDOT, _______,
+ _______, _______, _______, _______,
+ _______, _______,
+ _______, _______,
+ _______, _______, _______, _______),
+[NAS_TENKEY] = LAYOUT(
+ _______, _______, _______, KC_UP, KC_7, KC_8, KC_9, KC_ASTR,
+_______, KC_QUOT, _______, _______, KC_DLR, _______, _______, KC_AMPR, _______, KC_LEFT, KC_HOME, KC_RGHT, KC_0, KC_4, DZ, KC_PLUS, KC_5, KC_MINS, KC_EQL, KC_6, KC_ENT, _______, KC_DOT, _______,
+ KC_LPRN, KC_RPRN, _______, KC_DOWN, KC_1, KC_2, KC_3, KC_SLSH,
+ _______, _______, _______, _______,
+ _______, _______,
+ _______, _______,
+ _______, _______, _______, _______),
+[NAS_TENKEY_NUMLOCK] = LAYOUT(
+ _______, _______, _______, _______, KC_KP_7, KC_KP_8, KC_KP_9, KC_PAST,
+_______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, KC_KP_0, KC_KP_4, _______, KC_PPLS, KC_KP_5, KC_PMNS, KC_PEQL, KC_KP_6, KC_PENT, _______, KC_PDOT, _______,
+ _______, _______, _______, _______, KC_KP_1, KC_KP_2, KC_KP_3, KC_PSLS,
+ _______, _______, _______, _______,
+ _______, _______,
+ _______, _______,
+ _______, _______, _______, _______),
+};
+
+static void lock_led_set(bool on, uint8_t led) {
+ if (on) {
+ LED_LOCK_PORT &= ~led;
+ } else {
+ LED_LOCK_PORT |= led;
+ }
+}
+
+static void mode_led_set(uint8_t led) {
+ static const uint8_t ALL_MODE_LEDS = LED_FN | LED_NORMAL | LED_NAS | LED_TENKEY;
+ LED_MODE_PORT |= ALL_MODE_LEDS;
+ LED_MODE_PORT &= ~led;
+}
+
+static void layer_set(bool on, uint8_t layer) {
+ if (on) {
+ layer_on(layer);
+ } else {
+ layer_off(layer);
+ }
+
+ if (layer_state_is(NAS) || layer_state_is(NAS_NUMLOCK) || layer_state_is(NAS_TENKEY) || layer_state_is(NAS_TENKEY_NUMLOCK)) {
+ if (tenkey_enabled) {
+ mode_led_set(LED_NAS | LED_TENKEY);
+ } else {
+ mode_led_set(LED_NAS);
+ }
+ } else if (layer_state_is(FUNCTION_MOUSE) || layer_state_is(FUNCTION_ARROWS)) {
+ mode_led_set(LED_FN);
+ } else if (layer_state_is(NORMAL)) {
+ mode_led_set(LED_NORMAL);
+ }
+}
+
+static void set_normal(void) {
+ layer_move(NORMAL);
+
+#ifdef DATAHAND_THUMB_RETURN_COMMAND
+ layer_set(true, NORMAL_THUMB_RETURN_COMMAND);
+#endif
+
+ /* Then call layer_set to update LEDs. */
+ layer_set(true, NORMAL);
+}
+
+static void set_nas(bool on) {
+ /* Always turn on the base NAS layer so other layers can fall through. */
+ layer_set(on, NAS);
+
+ layer_set(on && numlock_enabled, NAS_NUMLOCK);
+ layer_set(on && tenkey_enabled, NAS_TENKEY);
+ layer_set(on && tenkey_enabled && numlock_enabled, NAS_TENKEY_NUMLOCK);
+}
+
+static void set_tenkey(bool on) {
+ tenkey_enabled = on;
+
+ /* We have to be on the NAS layer in order to be able to toggle TK.
+ * Re-toggle it on so that we move to the right layer (and set the right LED).
+ */
+ set_nas(true);
+}
+
+static void toggle_numlock(void) {
+ numlock_enabled = !numlock_enabled;
+ lock_led_set(numlock_enabled, LED_NUM_LOCK);
+
+ if (layer_state_is(NAS)) {
+ /* If we're already in NAS, re-set it so that we activate the numlock layer. */
+ set_nas(true);
+ }
+}
+
+static void set_function(void) {
+ /* Make sure to turn off NAS if we're entering function */
+ set_nas(false);
+
+ /* Always turn on the mouse layer so the arrow layer can fall through. */
+ layer_set(true, FUNCTION_MOUSE);
+ layer_set(!mouse_enabled, FUNCTION_ARROWS);
+}
+
+static void set_mouse_enabled(bool on) {
+ mouse_enabled = on;
+
+ /* Re-run set_function to set our layers correctly. */
+ set_function();
+}
+
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+ bool pressed = record->event.pressed;
+
+ switch(keycode) {
+ case N:
+ if (pressed) {
+ set_normal();
+ }
+ break;
+
+ case NS:
+ if (pressed) {
+ nas_locked = false;
+ }
+ set_nas(pressed);
+ break;
+
+ case NSL:
+ if (pressed) {
+ nas_locked = true;
+ set_nas(true);
+ }
+ break;
+
+ case NLK:
+ if (pressed) {
+ toggle_numlock();
+ SEND_STRING(SS_DOWN(X_NUMLOCK));
+ } else {
+ SEND_STRING(SS_UP(X_NUMLOCK));
+ }
+ break;
+
+ case FN:
+ if (pressed) {
+ set_function();
+ }
+ break;
+
+ case TK0:
+ if (pressed) {
+ set_tenkey(false);
+ }
+ break;
+
+ case TK1:
+ if (pressed) {
+ set_tenkey(true);
+ }
+ break;
+
+ case MS:
+ if (pressed) {
+ set_mouse_enabled(true);
+ }
+ break;
+
+ case AR:
+ if (pressed) {
+ set_mouse_enabled(false);
+ }
+ break;
+
+ case DZ:
+ if (pressed) {
+ SEND_STRING(SS_TAP(X_KP_0) SS_TAP(X_KP_0));
+ }
+ break;
+ }
+
+ return true;
+};
+
+void matrix_init_user(void) {
+#ifdef DATAHAND_THUMB_RETURN_COMMAND
+ set_normal();
+#endif
+}
+
+void matrix_scan_user(void) {
+
+}
+
+void led_set_user(uint8_t usb_led) {
+ lock_led_set(usb_led & (1<<USB_LED_NUM_LOCK), LED_NUM_LOCK);
+ lock_led_set(usb_led & (1<<USB_LED_CAPS_LOCK), LED_CAPS_LOCK);
+ lock_led_set(usb_led & (1<<USB_LED_SCROLL_LOCK), LED_SCROLL_LOCK);
+}
diff --git a/keyboards/handwired/datahand/matrix.c b/keyboards/handwired/datahand/matrix.c
new file mode 100644
index 0000000000..a08450d779
--- /dev/null
+++ b/keyboards/handwired/datahand/matrix.c
@@ -0,0 +1,125 @@
+/* Copyright 2017-2019 Nikolaus Wittenstein <nikolaus.wittenstein@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include "datahand.h"
+
+#include "matrix.h"
+#include "action.h"
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+
+static matrix_row_t matrix[MATRIX_ROWS];
+
+static matrix_row_t read_cols(void);
+static void select_row(uint8_t row);
+
+void matrix_init(void) {
+ /* See datahand.h for more detail on pins. */
+
+ /* 7 - matrix scan; 6-3 - mode LEDs */
+ DDRB = 0b11111000;
+
+ /* 1-0 - matrix scan */
+ DDRD = 0b00000011;
+
+ /* 6 - matrix scan */
+ DDRE = 0b01000000;
+
+ /* 7-4 - lock LEDs */
+ DDRF = 0b11110000;
+
+ /* Turn off the non-Normal LEDs (they're active low). */
+ PORTB |= LED_TENKEY | LED_FN | LED_NAS;
+
+ /* Turn off the lock LEDs. */
+ PORTF |= LED_CAPS_LOCK | LED_NUM_LOCK | LED_SCROLL_LOCK | LED_MOUSE_LOCK;
+
+ matrix_init_user();
+}
+
+uint8_t matrix_scan(void) {
+ for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+ select_row(row);
+ /* The default hardware works down to at least 100us, but I have a replacement
+ * photodiode that responds a little more slowly. Cranking it up to 1000us fixes
+ * shadowing issues.
+ */
+ _delay_us(1000);
+ matrix[row] = read_cols();
+ }
+
+ matrix_scan_user();
+
+ return 1;
+}
+
+matrix_row_t matrix_get_row(uint8_t row) {
+ return matrix[row];
+}
+
+void matrix_print(void) {
+ print("\nr/c 01234567\n");
+
+ for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
+ phex(row);
+ print(": ");
+ print_bin_reverse8(matrix_get_row(row));
+ print("\n");
+ }
+}
+
+bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
+ return process_record_user(keycode, record);
+}
+
+static void select_row(uint8_t row) {
+ /* Original 8051: P1 bits 0-3 (pins 1-4)
+ * Teensy++: PE0, PB7, PD0, PD1
+ */
+
+ if (row & (1<<0)) {
+ PORTE |= (1<<6);
+ } else {
+ PORTE &= ~(1<<6);
+ }
+
+ if (row & (1<<1)) {
+ PORTB |= (1<<7);
+ } else {
+ PORTB &= ~(1<<7);
+ }
+
+ if (row & (1<<2)) {
+ PORTD |= (1<<0);
+ } else {
+ PORTD &= ~(1<<0);
+ }
+
+ if (row & (1<<3)) {
+ PORTD |= (1<<1);
+ } else {
+ PORTD &= ~(1<<1);
+ }
+}
+
+static matrix_row_t read_cols(void) {
+ /* Original 8051: P1 bits 4-7 (pins 5-8)
+ * Teensy++: PD bits 2-5
+ */
+
+ return (PIND & 0b00111100) >> 2;
+}
diff --git a/keyboards/handwired/datahand/readme.md b/keyboards/handwired/datahand/readme.md
new file mode 100644
index 0000000000..923cebb00e
--- /dev/null
+++ b/keyboards/handwired/datahand/readme.md
@@ -0,0 +1,15 @@
+# DataHand
+
+A keyboard designed to prevent RSI. See [Wikipedia](https://en.wikipedia.org/wiki/DataHand) and [this website](http://octopup.org/computer/datahand) for more info.
+
+To use this firmware, you have to replace the stock microcontroller with a Teensy++ 2.0. This is relatively easy and also reversible. See the notes at the bottom of datahand.h for more info.
+
+Keyboard Maintainer: [Nikolaus Wittenstein](https://github.com/adzenith)
+Hardware Supported: DataHand Personal or Pro II
+Hardware Availability: No longer in production
+
+Make example for this keyboard (after setting up your build environment):
+
+ make handwired/datahand:default
+
+See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).
diff --git a/keyboards/handwired/datahand/rules.mk b/keyboards/handwired/datahand/rules.mk
new file mode 100644
index 0000000000..59f14e17a4
--- /dev/null
+++ b/keyboards/handwired/datahand/rules.mk
@@ -0,0 +1,59 @@
+# Project-specific includes
+SRC = matrix.c
+
+# MCU name
+MCU = at90usb1286
+
+# Processor frequency.
+# This will define a symbol, F_CPU, in all source code files equal to the
+# processor frequency in Hz. You can then use this symbol in your source code to
+# calculate timings. Do NOT tack on a 'UL' at the end, this will be done
+# automatically to create a 32-bit value in your source code.
+#
+# This will be an integer division of F_USB below, as it is sourced by
+# F_USB after it has run through any CPU prescalers. Note that this value
+# does not *change* the processor frequency - it should merely be updated to
+# reflect the processor speed set externally so that the code can use accurate
+# software delays.
+F_CPU = 16000000
+
+#
+# LUFA specific
+#
+# Target architecture (see library "Board Types" documentation).
+ARCH = AVR8
+
+# Input clock frequency.
+# This will define a symbol, F_USB, in all source code files equal to the
+# input clock frequency (before any prescaling is performed) in Hz. This value may
+# differ from F_CPU if prescaling is used on the latter, and is required as the
+# raw input clock is fed directly to the PLL sections of the AVR for high speed
+# clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
+# at the end, this will be done automatically to create a 32-bit value in your
+# source code.
+#
+# If no clock division is performed on the input clock inside the AVR (via the
+# CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
+F_USB = $(F_CPU)
+
+# Interrupt driven control endpoint task(+60)
+OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
+
+BOOTLOADER = halfkay
+
+# Build Options
+BOOTMAGIC_ENABLE = no # Virtual DIP switch configuration(+1000)
+MOUSEKEY_ENABLE = yes # Mouse keys(+4700)
+EXTRAKEY_ENABLE = yes # Audio control and System control(+450)
+CONSOLE_ENABLE = yes # Console for debug(+400)
+COMMAND_ENABLE = yes # Commands for debug and configuration
+NKRO_ENABLE = yes # USB Nkey Rollover
+BACKLIGHT_ENABLE = no # Enable keyboard backlight functionality on B7 by default
+MIDI_ENABLE = no # MIDI controls
+UNICODE_ENABLE = no # Unicode
+BLUETOOTH_ENABLE = no # Enable Bluetooth with the Adafruit EZ-Key HID
+AUDIO_ENABLE = no # Audio output on port C6
+CUSTOM_MATRIX = yes # We definitely have a nonstandard matrix
+
+# Do not enable SLEEP_LED_ENABLE. it uses the same timer as BACKLIGHT_ENABLE
+SLEEP_LED_ENABLE = no # Breathing sleep LED during USB suspend
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 05:50:42 +0000