ESP32-C3 ANCS

[demsr]

Hello,

i'm trying to connect my esp32-c3 to an iphone to subscribe to the Apple Notification Center Service, but information is scarce and i found this snipped of code in this repo but i don't know how to adapt it to use it with NimBLE.

I'm currently not able to make the ESP32 show up in the iPhones BT device list

void _setServiceSolicitation(BLEAdvertisementData *a, BLEUUID uuid)
    {
      char cdata[2];
      switch(uuid.bitSize()) {
        case 16: {
          // [Len] [0x14] [UUID16] data
          cdata[0] = 3;
          cdata[1] = ESP_BLE_AD_TYPE_SOL_SRV_UUID;  // 0x14
          a->addData(std::string(cdata, 2) + std::string((char *)&uuid.getNative()->uuid.uuid16,2));
          break;
        }
    
        case 128: {
          // [Len] [0x15] [UUID128] data
          cdata[0] = 17;
          cdata[1] = ESP_BLE_AD_TYPE_128SOL_SRV_UUID;  // 0x15
          a->addData(std::string(cdata, 2) + std::string((char *)uuid.getNative()->uuid.uuid128,16));
          break;
        }
    
        default:
          return;
      }
    }

This does not seem to do the trick

...
NimBLEAdvertisementData oAdvertisingData = NimBLEAdvertisementData();
oAdvertisingData.setFlags(0x01);
oAdvertisingData.addData(uuid.getValue(), 16);
...

I'm thankful for any hints or tips