[audio_adc] Add new `audio_adc` component (#8094)

esphome/components/audio_adc/__init__.py

@@ -0,0 +1,41 @@
+from esphome import automation
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.const import CONF_ID, CONF_MIC_GAIN
+from esphome.core import coroutine_with_priority
+
+CODEOWNERS = ["@kbx81"]
+IS_PLATFORM_COMPONENT = True
+
+audio_adc_ns = cg.esphome_ns.namespace("audio_adc")
+AudioAdc = audio_adc_ns.class_("AudioAdc")
+
+SetMicGainAction = audio_adc_ns.class_("SetMicGainAction", automation.Action)
+
+
+SET_MIC_GAIN_ACTION_SCHEMA = cv.maybe_simple_value(
+    {
+        cv.GenerateID(): cv.use_id(AudioAdc),
+        cv.Required(CONF_MIC_GAIN): cv.templatable(cv.decibel),
+    },
+    key=CONF_MIC_GAIN,
+)
+
+
+@automation.register_action(
+    "audio_adc.set_mic_gain", SetMicGainAction, SET_MIC_GAIN_ACTION_SCHEMA
+)
+async def audio_adc_set_mic_gain_to_code(config, action_id, template_arg, args):
+    paren = await cg.get_variable(config[CONF_ID])
+    var = cg.new_Pvariable(action_id, template_arg, paren)
+
+    template_ = await cg.templatable(config.get(CONF_MIC_GAIN), args, float)
+    cg.add(var.set_mic_gain(template_))
+
+    return var
+
+
+@coroutine_with_priority(100.0)
+async def to_code(config):
+    cg.add_define("USE_AUDIO_ADC")
+    cg.add_global(audio_adc_ns.using)

esphome/components/audio_adc/audio_adc.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "esphome/core/defines.h"
+#include "esphome/core/hal.h"
+
+namespace esphome {
+namespace audio_adc {
+
+class AudioAdc {
+ public:
+  virtual bool set_mic_gain(float mic_gain) = 0;
+
+  virtual float mic_gain() = 0;
+};
+
+}  // namespace audio_adc
+}  // namespace esphome

esphome/components/audio_adc/automation.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include "esphome/core/automation.h"
+#include "esphome/core/component.h"
+#include "audio_adc.h"
+
+namespace esphome {
+namespace audio_adc {
+
+template<typename... Ts> class SetMicGainAction : public Action<Ts...> {
+ public:
+  explicit SetMicGainAction(AudioAdc *audio_adc) : audio_adc_(audio_adc) {}
+
+  TEMPLATABLE_VALUE(float, mic_gain)
+
+  void play(Ts... x) override { this->audio_adc_->set_mic_gain(this->mic_gain_.value(x...)); }
+
+ protected:
+  AudioAdc *audio_adc_;
+};
+
+}  // namespace audio_adc
+}  // namespace esphome