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[i2s_audio] Reset dout GPIO when stopping speaker driver (#16573)

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Kevin Ahrendt
2026-05-22 15:43:50 -04:00
committed by GitHub
parent 7182b1a8ae
commit c3bef24389
1 changed files with 10 additions and 0 deletions
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10
esphome/components/i2s_audio/speaker/i2s_audio_speaker.cpp
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@@ -2,6 +2,7 @@
#ifdef USE_ESP32
#include <driver/gpio.h>
#include <driver/i2s_std.h>
#include "esphome/components/audio/audio.h"
@@ -299,6 +300,15 @@ void I2SAudioSpeakerBase::stop_i2s_driver_() {
i2s_channel_disable(this->tx_handle_);
i2s_del_channel(this->tx_handle_);
this->tx_handle_ = nullptr;
// i2s_del_channel() leaves dout wired to this port's data-out signal in the GPIO matrix: it only
// clears an internal reservation mask, never the esp_rom_gpio_connect_out_signal() routing that
// setup installed. If another speaker reuses this port (shared bus), its audio still reaches our
// dout. Detach the pin and drive it low so a stale output stops driving downstream hardware: a
// SPDIF optical transmitter would otherwise stay lit, and an analog DAC would emit noise.
gpio_reset_pin(this->dout_pin_);
gpio_set_direction(this->dout_pin_, GPIO_MODE_OUTPUT);
gpio_set_level(this->dout_pin_, 0);
}
this->parent_->unlock();
}