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Add WS2815 brightness limiter. Uses "magic value" of 255mA.

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This commit is contained in:
Max Hedge 2020-01-13 17:09:20 +00:00
parent d971fc440f
commit bafd043aae
3 changed files with 22 additions and 5 deletions
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24
wled00/FX_fcn.cpp
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@ -201,10 +201,17 @@ void WS2812FX::show(void) {
//each LED can draw up 195075 "power units" (approx. 53mA)
//one PU is the power it takes to have 1 channel 1 step brighter per brightness step
//so A=2,R=255,G=0,B=0 would use 510 PU per LED (1mA is about 3700 PU)
if (ablMilliampsMax > 149 && milliampsPerLed > 0) //0 mA per LED and too low numbers turn off calculation
bool useWackyWS2815PowerModel = false;
byte actualMilliampsPerLed = milliampsPerLed;
if(milliampsPerLed == 255) {
useWackyWS2815PowerModel = true;
actualMilliampsPerLed = 12; // from testing an actual strip
}
if (ablMilliampsMax > 149 && actualMilliampsPerLed > 0) //0 mA per LED and too low numbers turn off calculation
{
uint32_t puPerMilliamp = 195075 / milliampsPerLed;
uint32_t puPerMilliamp = 195075 / actualMilliampsPerLed;
uint32_t powerBudget = (ablMilliampsMax - MA_FOR_ESP) * puPerMilliamp; //100mA for ESP power
if (powerBudget > puPerMilliamp * _length) //each LED uses about 1mA in standby, exclude that from power budget
{
@ -219,9 +226,18 @@ void WS2812FX::show(void) {
for (uint16_t i = 0; i < _length; i++) //sum up the usage of each LED
{
RgbwColor c = bus->GetPixelColorRgbw(i);
powerSum += (c.R + c.G + c.B + c.W);
if(useWackyWS2815PowerModel)
{
powerSum += (max(max(max(c.R,c.G),c.B),c.W)) * 3;
}
else
{
powerSum += (c.R + c.G + c.B + c.W);
}
}
if (_rgbwMode) //RGBW led total output with white LEDs enabled is still 50mA, so each channel uses less
{
powerSum *= 3;

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wled00/data/settings_leds.htm
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3
wled00/html_settings.h
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@ -75,7 +75,7 @@ const char PAGE_settings_leds[] PROGMEM = R"=====(<!DOCTYPE html>
<meta charset=utf-8>
<meta name=viewport content="width=500">
<title>LED Settings</title>
<script>var d=document,laprev=55;function H(){window.open("https://github.com/Aircoookie/WLED/wiki/Settings#led-settings")}function B(){window.open("/settings","_self")}function S(){GetV();setABL()}function enABL(){var a=d.getElementById("able").checked;d.Sf.LA.value=(a)?laprev:0;d.getElementById("abl").style.display=(a)?"inline":"none";d.getElementById("psu2").style.display=(a)?"inline":"none";if(d.Sf.LA.value>0){setABL()}}function enLA(){var a=d.Sf.LAsel.value;d.Sf.LA.value=a;d.getElementById("LAdis").style.display=(a==50)?"inline":"none";UI()}function setABL(){d.getElementById("able").checked=true;d.Sf.LAsel.value=50;switch(parseInt(d.Sf.LA.value)){case 0:d.getElementById("able").checked=false;enABL();break;case 30:d.Sf.LAsel.value=30;break;case 35:d.Sf.LAsel.value=35;break;case 55:d.Sf.LAsel.value=55;break;default:d.getElementById("LAdis").style.display="inline"}UI()}function UI(){var b=d.querySelectorAll(".wc"),a=b.length;for(i=0;i<a;i++){b[i].style.display=(d.getElementById("rgbw").checked)?"inline":"none"}d.getElementById("ledwarning").style.display=(d.Sf.LC.value>1000)?"inline":"none";d.getElementById("ampwarning").style.display=(d.Sf.MA.value>7200)?"inline":"none";if(d.Sf.LA.value>0){laprev=d.Sf.LA.value}var j=Math.ceil((100+d.Sf.LC.value*laprev)/500)/2;j=(j>5)?Math.ceil(j):j;var g="";var e=(d.Sf.LAsel.value==30);if(j<1.02&&!e){g="ESP 5V pin with 1A USB supply"}else{g+=e?"12V ":"5V ";g+=j;g+="A supply connected to LEDs"}var h=Math.ceil((100+d.Sf.LC.value*laprev)/1500)/2;h=(h>5)?Math.ceil(h):h;var c="(for most effects, ~";c+=h;c+="A is enough)<br>";d.getElementById("psu").innerHTML=g;d.getElementById("psu2").innerHTML=c}function GetV(){var d=document;
<script>var d=document,laprev=55;function H(){window.open("https://github.com/Aircoookie/WLED/wiki/Settings#led-settings")}function B(){window.open("/settings","_self")}function S(){GetV();setABL()}function enABL(){var a=d.getElementById("able").checked;d.Sf.LA.value=(a)?laprev:0;d.getElementById("abl").style.display=(a)?"inline":"none";d.getElementById("psu2").style.display=(a)?"inline":"none";if(d.Sf.LA.value>0){setABL()}}function enLA(){var a=d.Sf.LAsel.value;d.Sf.LA.value=a;d.getElementById("LAdis").style.display=(a==50)?"inline":"none";UI()}function setABL(){d.getElementById("able").checked=true;d.Sf.LAsel.value=50;switch(parseInt(d.Sf.LA.value)){case 0:d.getElementById("able").checked=false;enABL();break;case 30:d.Sf.LAsel.value=30;break;case 35:d.Sf.LAsel.value=35;break;case 55:d.Sf.LAsel.value=55;case 255:d.Sf.LAsel.value=255;break;default:d.getElementById("LAdis").style.display="inline"}UI()}function UI(){var b=d.querySelectorAll(".wc"),a=b.length;for(i=0;i<a;i++){b[i].style.display=(d.getElementById("rgbw").checked)?"inline":"none"}d.getElementById("ledwarning").style.display=(d.Sf.LC.value>1000)?"inline":"none";d.getElementById("ampwarning").style.display=(d.Sf.MA.value>7200)?"inline":"none";if(d.Sf.LA.value==255){laprev=12} else if(d.Sf.LA.value>0){laprev=d.Sf.LA.value}var j=Math.ceil((100+d.Sf.LC.value*laprev)/500)/2;j=(j>5)?Math.ceil(j):j;var g="";var e=(d.Sf.LAsel.value==30);var i=(d.Sf.LAsel.value==255);if(j<1.02&&!e&&!i){g="ESP 5V pin with 1A USB supply"}else{g+=e?"12V ":i?"WS2815 12V ":"5V ";g+=j;g+="A supply connected to LEDs"}var h=Math.ceil((100+d.Sf.LC.value*laprev)/1500)/2;h=(h>5)?Math.ceil(h):h;var c="(for most effects, ~";c+=h;c+="A is enough)<br>";d.getElementById("psu").innerHTML=g;d.getElementById("psu2").innerHTML=c}function GetV(){var d=document;
%CSS%%SCSS%</head><body onload=S()>
<form id=form_s name=Sf method=post>
<div class=helpB><button type=button onclick=H()>?</button></div>
@ -108,6 +108,7 @@ LED voltage (Max. current for a single LED):<br>
<option value=55 selected>5V default (55mA)</option>
<option value=35>5V efficient (35mA)</option>
<option value=30>12V (30mA)</option>
<option value=255>WS2815 (12mA)</option>
<option value=50>Custom</option>
</select><br>
<span id=LAdis style=display:none>Custom max. current per LED: <input name=LA type=number min=0 max=255 id=la oninput=UI() required> mA<br></span>