added tweaks to filter

bt_test/bt_test.ino

@@ -0,0 +1,51 @@
+#include <BluetoothSerial.h>
+#include "esp_bt.h"
+#include "esp_bt_main.h"
+#include "esp_bt_device.h"
+
+BluetoothSerial SerialBT;
+
+void setBluetoothTxPower(esp_power_level_t powerLevel) {
+  esp_err_t err = esp_bredr_tx_power_set(powerLevel, powerLevel);
+  if (err != ESP_OK) {
+    Serial.printf("Failed to set TX Power: %s\n", esp_err_to_name(err));
+  } else {
+    Serial.printf("TX Power set to level %d\n", powerLevel);
+  }
+}
+
+void setup() {
+  Serial.begin(115200);
+  delay(1000);
+
+  Serial.println("Initializing Bluetooth...");
+
+  if (!btStart()) {
+    Serial.println("Failed to start BT controller");
+    return;
+  }
+
+  // Disable and re-enable the classic BT stack to safely set TX power
+  esp_bluedroid_disable();
+  esp_bluedroid_deinit();
+
+  // Set Classic BT TX power (e.g., ESP_PWR_LVL_P9 = highest)
+  //setBluetoothTxPower(ESP_PWR_LVL_P9);
+  setBluetoothTxPower(ESP_PWR_LVL_N12);
+  
+
+  esp_bluedroid_init();
+  esp_bluedroid_enable();
+
+  if (!SerialBT.begin("ESP32-TXPowerTest")) {
+    Serial.println("Bluetooth Serial failed to start");
+    return;
+  }
+
+  Serial.println("Bluetooth initialized and ready!");
+}
+
+void loop() {
+  SerialBT.println("Hello from ESP32 with boosted TX power!");
+  delay(1);
+}