From 0ca50be26555d25e3adc97dc011b6b07e6a9d279 Mon Sep 17 00:00:00 2001
From: Blackwhitebear8 <blackwhitebear8@git@pixelhosting.nl>
Date: Fri, 10 Oct 2025 14:46:06 +0200
Subject: [PATCH] Add components/sound_sensor/sound_sensor.h

---
 components/sound_sensor/sound_sensor.h | 115 +++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 components/sound_sensor/sound_sensor.h

diff --git a/components/sound_sensor/sound_sensor.h b/components/sound_sensor/sound_sensor.h
new file mode 100644
index 0000000..44dce7e
--- /dev/null
+++ b/components/sound_sensor/sound_sensor.h
@@ -0,0 +1,115 @@
+#include "esphome.h"
+
+// ===== CONFIGURATIE (deze kun je hier nog steeds aanpassen) =====
+const int ADC_PIN = 36;
+const int SAMPLE_WINDOW_MS = 250;
+const float SENSITIVITY = 45.0;
+const int NOISE_FLOOR = 25;
+// ================================================================
+
+// Dit is de hoofdklasse die de metingen doet.
+// Deze is grotendeels ongewijzigd gebleven.
+class SoundSensor : public PollingComponent {
+ public:
+  SoundSensor() : PollingComponent(1000) {} // Update-interval van 1 seconde
+
+  // Setters om de sensor-objecten vanuit de YAML te koppelen
+  void set_db_sensor(sensor::Sensor *s) { this->db_sensor_ = s; }
+  void set_volume_sensor(sensor::Sensor *s) { this->volume_sensor_ = s; }
+  void set_raw_sensor(sensor::Sensor *s) { this->raw_sensor_ = s; }
+
+  void setup() override {
+    pinMode(ADC_PIN, INPUT);
+  }
+
+  void update() override {
+    unsigned long startMillis = millis();
+    unsigned int sample;
+    long sum_of_squares = 0;
+    int sample_count = 0;
+
+    while (millis() - startMillis < SAMPLE_WINDOW_MS) {
+      sample = analogRead(ADC_PIN);
+      long signal = sample - 2048; 
+      sum_of_squares += signal * signal;
+      sample_count++;
+      delay(0); 
+    }
+
+    if (sample_count == 0) return;
+
+    double rms = sqrt(sum_of_squares / (double)sample_count);
+
+    if (this->raw_sensor_ != nullptr) this->raw_sensor_->publish_state(rms);
+
+    if (rms < NOISE_FLOOR) {
+      if (this->db_sensor_ != nullptr) this->db_sensor_->publish_state(0);
+      if (this->volume_sensor_ != nullptr) this->volume_sensor_->publish_state(0);
+    } else {
+      float db_value = SENSITIVITY * log10(rms);
+      if (this->db_sensor_ != nullptr) this->db_sensor_->publish_state(db_value);
+      
+      float volume_percent = map(db_value, 0, 90, 0, 100);
+      volume_percent = constrain(volume_percent, 0, 100);
+      if (this->volume_sensor_ != nullptr) this->volume_sensor_->publish_state(volume_percent);
+    }
+  }
+
+ protected:
+  sensor::Sensor *db_sensor_{nullptr};
+  sensor::Sensor *volume_sensor_{nullptr};
+  sensor::Sensor *raw_sensor_{nullptr};
+
+  float map(float x, float in_min, float in_max, float out_min, float out_max) {
+    return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
+  }
+};
+
+
+// =========== NIEUWE CODE VOOR INTEGRATIE MET ESPHOME ===========
+// Dit deel is de "lijm" tussen je YAML en de C++ klasse.
+
+#include "esphome/core/component.h"
+#include "esphome/components/sensor/sensor.h"
+
+// Definieer de configuratie-sleutels die we in YAML gebruiken
+static const char* const CONF_DB_SENSOR = "db_sensor";
+static const char* const CONF_VOLUME_SENSOR = "volume_sensor";
+static const char* const CONF_RAW_SENSOR = "raw_sensor";
+
+// Definieer het "schema" voor ons component, zodat ESPHome weet welke opties geldig zijn.
+// Dit moet overeenkomen met de structuur in je YAML.
+#define SOUND_SENSOR_SCHEMA(name) \
+    cv::Schema{ \
+        cv::Required(name): sensor::sensor_schema(), \
+    }
+
+// Dit is de "fabriek" die ons component bouwt op basis van de YAML configuratie
+esp_err_t sound_sensor_to_code(esphome::config_parser::ASTNode* config) {
+    auto* ss = new SoundSensor();
+    App.register_component(ss);
+
+    // Koppel de 'db_sensor' configuratie uit YAML aan ons C++ object
+    if (config->has_key(CONF_DB_SENSOR)) {
+        auto conf = config->get_node(CONF_DB_SENSOR);
+        sensor::Sensor* s = cg::new_Pvariable(conf->get_id());
+        sensor::setup_sensor(s, conf);
+        cg::add(ss->set_db_sensor(s));
+    }
+    // Koppel de 'volume_sensor' configuratie
+    if (config->has_key(CONF_VOLUME_SENSOR)) {
+        auto conf = config->get_node(CONF_VOLUME_SENSOR);
+        sensor::Sensor* s = cg::new_Pvariable(conf->get_id());
+        sensor::setup_sensor(s, conf);
+        cg::add(ss->set_volume_sensor(s));
+    }
+    // Koppel de 'raw_sensor' configuratie
+    if (config->has_key(CONF_RAW_SENSOR)) {
+        auto conf = config->get_node(CONF_RAW_SENSOR);
+        sensor::Sensor* s = cg::new_Pvariable(conf->get_id());
+        sensor::setup_sensor(s, conf);
+        cg::add(ss->set_raw_sensor(s));
+    }
+
+    return esp_err_t::ESP_OK;
+}
\ No newline at end of file