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improve brightness curve

This commit is contained in:
interfisch 2019-10-21 19:06:17 +02:00
parent eebe634383
commit 9812e2a2e7
1 changed files with 3 additions and 2 deletions
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5
controllerHomie/controllerHomie.ino
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@ -66,6 +66,7 @@ float enable_fadevalue_change_per_loop=0.01; //fixed value. For manual calculato
float set_brightness=2; //0 to 1
#define BRIGHTNESS_MIN 0.0
#define BRIGHTNESS_MAX 2.0 //if temperature is in between both strips brightness of 2 means both are at full power. otherwise brightness will be clipped
#define BRIGHTNESSCURVE 1.4
float brightness=set_brightness;
float brightness_change_per_loop=0; //will be calculated by Handler
@ -324,8 +325,8 @@ void loopHandler() {
uint16_t pwmCW;
uint16_t pwmWW;
float temp=mapFloat(temperature, TEMPERATURE_MIN, TEMPERATURE_MAX, 0.0,1.0); //0=warmwhite, 1=coldwhite
pwmCW=pow((brightness*enable_fadevalue)*temp/2.0, 2) *2.0 *PWM_MAX; //calculate brightness for led stripe, scale to 0-1, ^2, rescale to 0-2, scale for pwm
pwmWW=pow((brightness*enable_fadevalue)*(1-temp)/2.0, 2) *2.0 *PWM_MAX;
pwmCW=pow((brightness*enable_fadevalue)/2.0, BRIGHTNESSCURVE) *2.0 *temp *PWM_MAX; //calculate brightness for led stripe, scale to 0-1, ^2, rescale to 0-2, scale for pwm
pwmWW=pow((brightness*enable_fadevalue)/2.0, BRIGHTNESSCURVE) *2.0 *(1-temp) *PWM_MAX;
if (pwmCW>PWM_MAX) { pwmCW=PWM_MAX; } //limit
if (pwmWW>PWM_MAX) { pwmWW=PWM_MAX; } //limit