qmk_firmware/keyboards/ergodox/ez/config.h
Andrew Pritchard cd30a60d0e Change to per-key eager debouncing for ErgoDox EZ.
Empirically, waiting for N consecutive identical scans as a debouncing
strategy doesn't work very well for the ErgoDox EZ where scans are very
slow compared to most keyboards.  Instead, debounce the signals by
eagerly reporting a change as soon as one scan observes it, but then
ignoring further changes from that key for the next N scans.

This is implemented by keeping an extra matrix of uint8 countdowns, such
that only keys whose countdown is currently zero are eligible to change.
When we do observe a change, we bump that key's countdown to DEBOUNCE.
During each scan, every nonzero countdown is decremented.

With this approach to debouncing, much higher debounce constants are
tolerable, because latency does not increase with the constant, and
debounce countdowns on one key do not interfere with events on other
keys.  The only negative effect of increasing the constant is that the
minimum duration of a keypress increases.  Perhaps I'm just extremely
unlucky w.r.t. key switch quality, but I saw occasional bounces even
with DEBOUNCE=10; with 15, I've seen none so far.  That's around 47ms,
which seems like an absolutely insane amount of time for a key to be
bouncy, but at least it works.
2017-04-26 15:29:39 -07:00

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2.1 KiB
C

/*
Copyright 2012 Jun Wako <wakojun@gmail.com>
Copyright 2013 Oleg Kostyuk <cub.uanic@gmail.com>
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 ERGODOX_EZ_CONFIG_H
#define ERGODOX_EZ_CONFIG_H
#include "../config.h"
#include "config_common.h"
/* USB Device descriptor parameter */
#define VENDOR_ID 0xFEED
#define PRODUCT_ID 0x1307
#define DEVICE_VER 0x0001
#define MANUFACTURER ErgoDox EZ
#define PRODUCT ErgoDox EZ
#define DESCRIPTION QMK keyboard firmware for Ergodox EZ
/* key matrix size */
#define MATRIX_ROWS 14
#define MATRIX_COLS 6
/* number of backlight levels */
#define BACKLIGHT_LEVELS 3
#define LED_BRIGHTNESS_LO 15
#define LED_BRIGHTNESS_HI 255
/* ws2812 RGB LED */
#define RGB_DI_PIN D7
#define RGBLIGHT_ANIMATIONS
#define RGBLED_NUM 15 // Number of LEDs
#define RGBLIGHT_HUE_STEP 12
#define RGBLIGHT_SAT_STEP 255
#define RGBLIGHT_VAL_STEP 12
/* fix space cadet rollover issue */
#define DISABLE_SPACE_CADET_ROLLOVER
// #define RGB_MIDI
#define RGBW_BB_TWI
#define RGBW 1
/* Set 0 if debouncing isn't needed */
#define DEBOUNCE 15
#define USB_MAX_POWER_CONSUMPTION 500
/*
* Feature disable options
* These options are also useful to firmware size reduction.
*/
/* disable debug print */
// #define NO_DEBUG
/* disable print */
// #define NO_PRINT
/* disable action features */
//#define NO_ACTION_LAYER
//#define NO_ACTION_TAPPING
//#define NO_ACTION_ONESHOT
//#define NO_ACTION_MACRO
//#define NO_ACTION_FUNCTION
//#define DEBUG_MATRIX_SCAN_RATE
#endif