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esp32-hal-ledc.c: Clear bit in used_channels bitmap #10089

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esp32-hal-ledc.c: Clear bit in used_channels bitmap #10089

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7 changes: 7 additions & 0 deletions cores/esp32/esp32-hal-ledc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -271,6 +271,13 @@ uint32_t ledcWriteNote(uint8_t pin, note_t note, uint8_t octave) {
bool ledcDetach(uint8_t pin) {
ledc_channel_handle_t *bus = (ledc_channel_handle_t *)perimanGetPinBus(pin, ESP32_BUS_TYPE_LEDC);
if (bus != NULL) {
/* ledc_handle.used_channels use bitmap to indicate if channel is used
bit is set if channel is used, in ledcAttachChannel/ledcAttach
bit is cleared if channel is detached here
*/
if (ledc_handle.used_channels & (1UL << bus->channel)) {
ledc_handle.used_channels &= ~(1UL << bus->channel);
}
// will call ledcDetachBus
return perimanClearPinBus(pin);
} else {
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