opensteno_qmk/quantum/wpm.c

64 lines
2.1 KiB
C

/*
* Copyright 2020 Richard Sutherland (rich@brickbots.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/>.
*/
#include "wpm.h"
// WPM Stuff
static uint8_t current_wpm = 0;
static uint8_t latest_wpm = 0;
static uint16_t wpm_timer = 0;
// This smoothing is 40 keystrokes
static const float wpm_smoothing = 0.0487;
void set_current_wpm(uint8_t new_wpm) { current_wpm = new_wpm; }
uint8_t get_current_wpm(void) { return current_wpm; }
bool wpm_keycode(uint16_t keycode) { return wpm_keycode_kb(keycode); }
__attribute__((weak)) bool wpm_keycode_kb(uint16_t keycode) { return wpm_keycode_user(keycode); }
__attribute__((weak)) bool wpm_keycode_user(uint16_t keycode) {
if ((keycode >= QK_MOD_TAP && keycode <= QK_MOD_TAP_MAX) || (keycode >= QK_LAYER_TAP && keycode <= QK_LAYER_TAP_MAX) || (keycode >= QK_MODS && keycode <= QK_MODS_MAX)) {
keycode = keycode & 0xFF;
} else if (keycode > 0xFF) {
keycode = 0;
}
if ((keycode >= KC_A && keycode <= KC_0) || (keycode >= KC_TAB && keycode <= KC_SLASH)) {
return true;
}
return false;
}
void update_wpm(uint16_t keycode) {
if (wpm_keycode(keycode)) {
if (wpm_timer > 0) {
latest_wpm = 60000 / timer_elapsed(wpm_timer) / 5;
current_wpm = (latest_wpm - current_wpm) * wpm_smoothing + current_wpm;
}
wpm_timer = timer_read();
}
}
void decay_wpm(void) {
if (timer_elapsed(wpm_timer) > 1000) {
current_wpm = (0 - current_wpm) * wpm_smoothing + current_wpm;
wpm_timer = timer_read();
}
}