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use CIE brightness also for ESP8266

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This commit is contained in:
Damian Schneider 2024-08-21 08:06:32 +02:00
parent e7babc071d
commit 1cc47b02cf
1 changed files with 1 additions and 5 deletions
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6
wled00/bus_manager.cpp
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@ -501,9 +501,7 @@ void BusPwm::show() {
if (!_valid) return; if (!_valid) return;
unsigned numPins = NUM_PWM_PINS(_type); unsigned numPins = NUM_PWM_PINS(_type);
unsigned maxBri = (1<<_depth) - 1; unsigned maxBri = (1<<_depth) - 1;
#ifdef ESP8266 // use CIE brightness formula
unsigned pwmBri = (unsigned)(roundf(powf((float)_bri / 255.0f, 1.7f) * (float)maxBri)); // using gamma 1.7 to extrapolate PWM duty cycle
#else // use CIE brightness formula
unsigned pwmBri = (unsigned)_bri * 100; unsigned pwmBri = (unsigned)_bri * 100;
if(pwmBri < 2040) pwmBri = ((pwmBri << _depth) + 115043) / 230087; //adding '0.5' before division for correct rounding if(pwmBri < 2040) pwmBri = ((pwmBri << _depth) + 115043) / 230087; //adding '0.5' before division for correct rounding
else { else {
@ -512,8 +510,6 @@ void BusPwm::show() {
temp = temp * temp * temp * (1<<_depth) - 1; temp = temp * temp * temp * (1<<_depth) - 1;
pwmBri = (unsigned)temp; pwmBri = (unsigned)temp;
} }
Serial.println(pwmBri);
#endif
for (unsigned i = 0; i < numPins; i++) { for (unsigned i = 0; i < numPins; i++) {
unsigned scaled = (_data[i] * pwmBri) / 255; unsigned scaled = (_data[i] * pwmBri) / 255;
if (_reversed) scaled = maxBri - scaled; if (_reversed) scaled = maxBri - scaled;