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Fix C/P error

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This commit is contained in:
Blaz Kristan 2024-08-27 21:57:00 +02:00
parent b2e00eb868
commit c51ce2eec7
1 changed files with 19 additions and 11 deletions
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30
wled00/bus_manager.cpp
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@ -425,11 +425,12 @@ BusPwm::BusPwm(BusConfig &bc)
#ifdef ESP8266
pinMode(_pins[i], OUTPUT);
#else
ledcSetup(_ledcStart + i, _frequency, _depth);
ledcAttachPin(_pins[i], _ledcStart + i);
unsigned channel = _ledcStart + i;
ledcSetup(channel, _frequency, _depth);
ledcAttachPin(_pins[i], channel);
// LEDC timer reset credit @dedehai
uint8_t group = ((_ledcStart + i) / 8), channel = ((_ledcStart + i) % 8); // _ledcStart + i is always less than MAX_LED_CHANNELS/LEDC_CHANNELS
ledc_timer_rst((ledc_mode_t)group, (ledc_channel_t)channel); // reset timer so all timers are almost in sync (for phase shift)
uint8_t group = (channel / 8), timer = ((channel / 2) % 4); // same fromula as in ledcSetup()
ledc_timer_rst((ledc_mode_t)group, (ledc_timer_t)timer); // reset timer so all timers are almost in sync (for phase shift)
#endif
}
_hasRgb = hasRGB(bc.type);
@ -501,30 +502,37 @@ void BusPwm::show() {
if (!_valid) return;
const unsigned numPins = getPins();
const unsigned maxBri = (1<<_depth);
// use CIE brightness formula
unsigned pwmBri = (unsigned)_bri * 100;
if (pwmBri < 2040)
pwmBri = ((pwmBri << _depth) + 115043) / 230087; //adding '0.5' before division for correct rounding
else {
pwmBri += 4080;
float temp = (float)pwmBri / 29580;
float temp = (float)pwmBri / 29580.0f;
temp = temp * temp * temp * maxBri;
pwmBri = (unsigned)temp;
}
// determine phase shift POC (credit @dedehai)
for (unsigned i = 0; i < numPins; i++) {
unsigned scaled = (_data[i] * pwmBri) / 255;
if (_reversed) scaled = maxBri - scaled;
#ifdef ESP8266
analogWrite(_pins[i], scaled);
#else
// CCT blending has to be 0 for phse shift to work (WW & CW must not overlap)
unsigned channel = _ledcStart + i;
// determine phase shift POC for PWM CCT (credit @dedehai)
// phase shifting (180°) is only available for PWM CCT LED type if _needsRefresh is true (UI hack)
// and CCT blending is 0 (WW & CW must not overlap)
// this will allow using H-bridge to drive reverse-polarity CCT LED strip (2 wires)
// NOTE/TODO: if this has no side effects we may forego UI hack and the need for _needsRefresh
// we may even use phase shift to evenly distribute power across different pins
if (_type == TYPE_ANALOG_2CH && _needsRefresh && Bus::getCCTBlend() == 0) { // hacked to determine if phase shifted PWM is requested
if (scaled >= maxBri/2) scaled = maxBri/2 - 1; // safety check & add dead time of 1 pulse
uint8_t group = ((_ledcStart + i) / 8), channel = ((_ledcStart + i) % 8); // _ledcStart + i is always less than MAX_LED_CHANNELS/LEDC_CHANNELS
ledc_set_duty_and_update((ledc_mode_t)group, (ledc_channel_t)channel, scaled, (maxBri / numPins)*i);
unsigned maxDuty = (maxBri / numPins); // numPins is 2
if (scaled >= maxDuty) scaled = maxDuty - 1; // safety check & add dead time of 1 pulse when brightness is at 50%
ledc_set_duty_and_update((ledc_mode_t)(channel / 8), (ledc_channel_t)(channel % 8), scaled, maxDuty*i);
} else
ledcWrite(_ledcStart + i, scaled);
ledcWrite(channel, scaled);
#endif
}
}