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ESPDMX robustness improvements

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* clamp channel to dmxMaxChannel (write)
* ensure that all data get sent, including start byte
This commit is contained in:
Frank
2026-01-25 17:45:08 +01:00
parent 0718a6d265
commit 57d63b7362
1 changed files with 2 additions and 1 deletions
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3
wled00/src/dependencies/dmx/ESPDMX.cpp
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@@ -73,6 +73,7 @@ void DMXESPSerial::write(int Channel, uint8_t value) {
if (Channel < 1) Channel = 1; if (Channel < 1) Channel = 1;
if (Channel > channelSize) Channel = channelSize; if (Channel > channelSize) Channel = channelSize;
if (Channel > dmxMaxChannel) Channel = dmxMaxChannel; // WLEDMM protect against array bounds violation
if (value < 0) value = 0; if (value < 0) value = 0;
if (value > 255) value = 255; if (value > 255) value = 255;
@@ -99,7 +100,7 @@ void DMXESPSerial::update() {
//send data //send data
Serial1.begin(DMXSPEED, DMXFORMAT); Serial1.begin(DMXSPEED, DMXFORMAT);
digitalWrite(sendPin, LOW); digitalWrite(sendPin, LOW);
Serial1.write(dmxDataStore, channelSize); Serial1.write(dmxDataStore, min(dmxMaxChannel+1, channelSize+1));
Serial1.flush(); Serial1.flush();
delay(1); delay(1);
Serial1.end(); Serial1.end();