wartana/WLED
1
0
Fork 0
Code Issues Pull Requests Actions 2 Packages Projects Releases Wiki Activity

fix relay not turning on at boot (#5315)

Browse Source 
These changes eliminate an elaborate race condition
* add dedicated function to handle on/off and relay
* add clarifying comment on output set order
* add define for relay delay, honor forceOff in all cases
This commit is contained in:
Damian Schneider
2026-01-31 17:40:53 +01:00
committed by GitHub
parent 2c4ed4249d
commit 1ca55e42af
5 changed files with 21 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
wled00/button.cpp
View File

@@ -367,24 +367,29 @@ void handleIO()
// if we want to control on-board LED (ESP8266) or relay we have to do it here as the final show() may not happen until
// next loop() cycle
if (strip.getBrightness()) {
handleOnOff();
}
void handleOnOff(bool forceOff)
{
if (strip.getBrightness() && !forceOff) {
lastOnTime = millis();
if (offMode) {
BusManager::on();
if (rlyPin>=0) {
pinMode(rlyPin, rlyOpenDrain ? OUTPUT_OPEN_DRAIN : OUTPUT);
digitalWrite(rlyPin, rlyMde);
delay(50); // wait for relay to switch and power to stabilize
// note: pinMode is set in first call to handleOnOff(true) in beginStrip()
digitalWrite(rlyPin, rlyMde); // set to on state
delay(RELAY_DELAY); // let power stabilize before sending LED data (#346 #812 #3581 #3955)
}
offMode = false;
}
} else if (millis() - lastOnTime > 600 && !strip.needsUpdate()) {
} else if ((millis() - lastOnTime > 600 && !strip.needsUpdate()) || forceOff) {
// for turning LED or relay off we need to wait until strip no longer needs updates (strip.trigger())
if (!offMode) {
BusManager::off();
if (rlyPin>=0) {
digitalWrite(rlyPin, !rlyMde); // set output before disabling high-z state to avoid output glitches
pinMode(rlyPin, rlyOpenDrain ? OUTPUT_OPEN_DRAIN : OUTPUT);
digitalWrite(rlyPin, !rlyMde);
}
offMode = true;
}