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[Keyboard] Add DataHand keyboard support (#4847)

master
Nikolaus Wittenstein 2019-01-22 18:17:41 -05:00 committed by Drashna Jaelre
parent 2a33d2c424
commit 6b1009b7a8
7 changed files with 733 additions and 0 deletions
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87
keyboards/handwired/datahand/config.h 100644
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/* 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

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keyboards/handwired/datahand/datahand.h 100644
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/* 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
*/

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keyboards/handwired/datahand/keymaps/default/keymap.c 100644
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/* 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);
}

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/* 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;
}

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keyboards/handwired/datahand/readme.md 100644
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# 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).

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keyboards/handwired/datahand/rules.mk 100644
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# 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

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keyboards/readme.md
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@ -38,6 +38,7 @@ These keyboards are part of the QMK repository, but their manufacturers are not
* [Arrow Pad](/keyboards/arrow_pad) &mdash; A custom creation by IBNobody.
* [Atreus](/keyboards/atreus) &mdash; Made by Technomancy.
* [Bantam44](/keyboards/bantam44) &mdash; It is a 44-key 40% staggered keyboard.
* [DataHand](/keyboards/handwired/datahand) &mdash; DataHand keyboard converted to use a Teensy board.
* [Ergodox Infinity](/keyboards/ergodox_infinity) - Ergonomic Split Keyboard by Input Club.
* [GH60](/keyboards/gh60) &mdash; A 60% Geekhack community-driven project.
* [GON NerD](/keyboards/gonnerd) &mdash; Korean custom 60% PCB