WLED/wled00/dmx.cpp

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2020-04-10 12:30:08 +02:00
#include "wled.h"
/*
* Support for DMX via MAX485.
* Change the output pin in src/dependencies/ESPDMX.cpp if needed.
* Library from:
* https://github.com/Rickgg/ESP-Dmx
*/
#ifdef WLED_ENABLE_DMX
void handleDMX()
{
// don't act, when in DMX Proxy mode
if (e131ProxyUniverse != 0) return;
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// TODO: calculate brightness manually if no shutter channel is set
uint8_t brightness = strip.getBrightness();
uint16_t len = strip.getLengthTotal();
for (int i = DMXStartLED; i < len; i++) { // uses the amount of LEDs as fixture count
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uint32_t in = strip.getPixelColor(i); // get the colors for the individual fixtures as suggested by Aircoookie in issue #462
byte w = in >> 24 & 0xFF;
byte r = in >> 16 & 0xFF;
byte g = in >> 8 & 0xFF;
byte b = in & 0xFF;
int DMXFixtureStart = DMXStart + (DMXGap * (i - DMXStartLED));
for (int j = 0; j < DMXChannels; j++) {
int DMXAddr = DMXFixtureStart + j;
switch (DMXFixtureMap[j]) {
case 0: // Set this channel to 0. Good way to tell strobe- and fade-functions to fuck right off.
dmx.write(DMXAddr, 0);
break;
case 1: // Red
dmx.write(DMXAddr, r);
break;
case 2: // Green
dmx.write(DMXAddr, g);
break;
case 3: // Blue
dmx.write(DMXAddr, b);
break;
case 4: // White
dmx.write(DMXAddr, w);
break;
case 5: // Shutter channel. Controls the brightness.
dmx.write(DMXAddr, brightness);
break;
case 6: // Sets this channel to 255. Like 0, but more wholesome.
dmx.write(DMXAddr, 255);
break;
}
}
}
dmx.update(); // update the DMX bus
}
void initDMX() {
dmx.init(512); // initialize with bus length
}
#else
void handleDMX() {}
void initDMX() {}
#endif