/*
 * hub_scanner.ino  --  find the BLE addresses of your LEGO hubs
 *
 * Board package: esp32 (the normal Espressif one)
 * Libraries:     NimBLE-Arduino 1.4.x  (same version Legoino wants)
 *
 * Flash this to the receiver board, open the serial monitor at 115200, then
 * press the green button on one hub at a time. Anything advertising the LEGO
 * Wireless Protocol service (00001623-1212-EFDE-1623-785FEABCD123) is printed
 * with its address. Copy those into receiver.ino.
 *
 * Created by: Jess Rogerson (yelling commands at Claude.AI)
 */

#include <NimBLEDevice.h>

static const char *LPF2_SERVICE = "00001623-1212-efde-1623-785feabcd123";

void setup() {
    Serial.begin(115200);
    delay(500);
    Serial.println("Scanning for LEGO hubs - press a hub button to wake it up");

    NimBLEDevice::init("hub-scanner");
    NimBLEScan *scan = NimBLEDevice::getScan();
    scan->setActiveScan(true);
    scan->setInterval(100);
    scan->setWindow(99);
}

void loop() {
    NimBLEScan *scan = NimBLEDevice::getScan();
    NimBLEScanResults results = scan->start(5, false);

    Serial.println("---- scan pass ----");
    for (int i = 0; i < results.getCount(); i++) {
        NimBLEAdvertisedDevice dev = results.getDevice(i);
        bool isLego = dev.isAdvertisingService(NimBLEUUID(LPF2_SERVICE));
        if (!isLego && dev.getName().empty()) continue;

        Serial.print(dev.getAddress().toString().c_str());
        Serial.print("  rssi ");
        Serial.print(dev.getRSSI());
        Serial.print("  ");
        Serial.print(dev.getName().c_str());
        Serial.println(isLego ? "   <-- LEGO HUB" : "");
    }
    scan->clearResults();
}