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| author | skullydazed <skullydazed@users.noreply.github.com> | 2017-10-18 01:47:49 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-10-18 01:47:49 +0200 |
| commit | ad49db8cd2557b6c54531059d4d162623520bd17 (patch) | |
| tree | 574183832900a40562e6f9c4de78c33ac6cc018d /quantum/rgblight.c | |
| parent | d3fe6a0588965b71c6876b060d05abfceabacbb5 (diff) | |
| download | qmk_firmware-ad49db8cd2557b6c54531059d4d162623520bd17.tar.gz qmk_firmware-ad49db8cd2557b6c54531059d4d162623520bd17.tar.xz | |
Address #1689 by using a formula to define the breathing curve (#1692)
* Address #1689 by using a formula to define the breathing curve and exposing defines to control the shape of the curve.
* Tweak the behavior of breathing for clueboard
Diffstat (limited to 'quantum/rgblight.c')
| -rw-r--r-- | quantum/rgblight.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/quantum/rgblight.c b/quantum/rgblight.c index 0f02b9a64..78072a61d 100644 --- a/quantum/rgblight.c +++ b/quantum/rgblight.c @@ -13,6 +13,7 @@ * 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 <math.h> #include <avr/eeprom.h> #include <avr/interrupt.h> #include <util/delay.h> @@ -465,13 +466,17 @@ void rgblight_task(void) { void rgblight_effect_breathing(uint8_t interval) { static uint8_t pos = 0; static uint16_t last_timer = 0; + float val; if (timer_elapsed(last_timer) < pgm_read_byte(&RGBLED_BREATHING_INTERVALS[interval])) { return; } last_timer = timer_read(); - rgblight_sethsv_noeeprom(rgblight_config.hue, rgblight_config.sat, pgm_read_byte(&LED_BREATHING_TABLE[pos])); + + // http://sean.voisen.org/blog/2011/10/breathing-led-with-arduino/ + val = (exp(sin((pos/255.0)*M_PI)) - RGBLIGHT_EFFECT_BREATHE_CENTER/M_E)*(RGBLIGHT_EFFECT_BREATHE_MAX/(M_E-1/M_E)); + rgblight_sethsv_noeeprom(rgblight_config.hue, rgblight_config.sat, val); pos = (pos + 1) % 256; } void rgblight_effect_rainbow_mood(uint8_t interval) { |