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bus_wrapper: Update comments to reflect RMT usage

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This commit is contained in:
Will Miles 2025-07-09 16:28:22 -04:00
parent 61990189de
commit 9569ec7ccf
1 changed files with 4 additions and 3 deletions
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7
wled00/bus_wrapper.h
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@ -1436,7 +1436,8 @@ class PolyBus {
// ESP32-S2 only has 4 RMT channels // ESP32-S2 only has 4 RMT channels
if (_useParallelI2S) { if (_useParallelI2S) {
if (num > 11) return I_NONE; if (num > 11) return I_NONE;
if (num < 8) offset = 1; // use x8 parallel I2S0 channels (use last to allow Audioreactive) if (num < 8) offset = 1; // use x8 parallel I2S0 channels followed by RMT
// Note: conflicts with AudioReactive if enabled
} else { } else {
if (num > 4) return I_NONE; if (num > 4) return I_NONE;
if (num > 3) offset = 1; // only one I2S0 (use last to allow Audioreactive) if (num > 3) offset = 1; // only one I2S0 (use last to allow Audioreactive)
@ -1449,7 +1450,7 @@ class PolyBus {
// On ESP32-S3 only the first 4 RMT channels are usable for transmitting // On ESP32-S3 only the first 4 RMT channels are usable for transmitting
if (_useParallelI2S) { if (_useParallelI2S) {
if (num > 11) return I_NONE; if (num > 11) return I_NONE;
if (num < 8) offset = 1; // use x8 parallel I2S LCD channels if (num < 8) offset = 1; // use x8 parallel I2S LCD channels, followed by RMT
} else { } else {
if (num > 3) return I_NONE; // do not use single I2S (as it is not supported) if (num > 3) return I_NONE; // do not use single I2S (as it is not supported)
} }
@ -1457,7 +1458,7 @@ class PolyBus {
// standard ESP32 has 8 RMT and x1/x8 I2S1 channels // standard ESP32 has 8 RMT and x1/x8 I2S1 channels
if (_useParallelI2S) { if (_useParallelI2S) {
if (num > 15) return I_NONE; if (num > 15) return I_NONE;
if (num < 8) offset = 1; // 8 RMT followed by 8 I2S if (num < 8) offset = 1; // 8 I2S followed by 8 RMT
} else { } else {
if (num > 9) return I_NONE; if (num > 9) return I_NONE;
if (num == 0) offset = 1; // prefer I2S1 for 1st bus (less flickering but more RAM needed) if (num == 0) offset = 1; // prefer I2S1 for 1st bus (less flickering but more RAM needed)