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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Repository: wled/WLED/.coderabbit.yaml Review profile: CHILL Plan: Advanced Run ID: 📒 Files selected for processing (1)
Included review availability: Your plan provides up to 10 included reviews per hour; 9 remain after this review. WalkthroughChangesESP32 PWM behavior
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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Actionable comments posted: 2
- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
In `@wled00/bus_manager.cpp`:
- Around line 579-583: Update the duty calculation in the cctICused blending
path to derive dutyOvershoot from totalDuty plus both dead-time zones minus
maxBri, using signed or guarded arithmetic to prevent underflow. Ensure the
proportional reduction cannot exceed duty before the LEDC register write, while
preserving the existing zero-channel exclusions.
- Line 462: Update the LEDC setup loop around ledcAttachChannel() to check its
boolean result; on failure, detach all channels attached earlier, release the
corresponding pin and LEDC allocations, and leave the bus marked invalid instead
of setting _valid to true. Preserve the existing successful-attachment flow.
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wled00/bus_manager.cpp
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willmmiles
reviewed
Sep 19, 2026
| // if total pwmBri plus two dead-time zones exceed maxBri, shorten the duty proportionally except if one is at 0% | ||
| if (duty < maxBri && dutyOvershoot > 0 && _data[0] > 0 && _data[1] > 0) { | ||
| const unsigned totalDuty = ((_data[0] + _data[1]) * pwmBri) / 255; //duty[0] + duty[1]; | ||
| if (totalDuty > 0) duty -= (dutyOvershoot * duty) / totalDuty; // subtract overshoot proportionally to signals contribution |
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Do we need to clamp the correction to make sure duty never goes negative?
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update to PWM bus so it works properly in V5.
It does basically the same thing as before just using the new functions and structs.
for some reason espressif decided to not name the registers the same on all new ESP types.
Also improved dead-time handling for 2-pin CCT strips to prevent shoot-through (increased dead time as it was kind of useless before).
Tested on ESP32 classic, C6 and C5
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