What should I do if I want to use RN to obtain device data

[liuzy1993]

Platform your question concerns:

• Android
• iOS
• Other
• Platform is not relevant for this question

Device:

• Polar Verity Sense

Description:

[orestesgaolin]

I presume you're using React Native? You would have to expose the SDK methods via native module. I don't think Polar team maintains any official cross-platform libraries. With Flutter app we just built ourselves a plugin that uses native libraries on Android and iOS.

[liuzy1993]

我猜你使用的是 React Native？你必须通过native module公开 SDK 方法。我认为 Polar 团队没有维护任何官方的跨平台库。借助 Flutter 应用，我们只需为自己构建一个在 Android 和 iOS 上使用原生库的插件即可。

Thank you for your answer. If I need to obtain UUIDs for related services such as ACC or PPI, where should I go to check

[dustex]

I'm working on a similar issue. I want to read ACC Data and want to set the time on the Polar H10 via a python script.
I have written a script which scans for BLE devices and lists all services, characteristics of a BLE device:

import asyncio
from bleak import BleakClient, BleakScanner

async def list_services(address):
    async with BleakClient(address) as client:
        if client.is_connected:
            print(f"Connected to {address}")
            services = await client.get_services()
            for service in services:
                print(f"\nService: {service.uuid} | {service.description}")
                for characteristic in service.characteristics:
                    print(f"  Characteristic: {characteristic.uuid} | {characteristic.description}")
                    for descriptor in characteristic.descriptors:
                        print(f"    Descriptor: {descriptor.uuid}")
        else:
            print(f"Failed to connect to {address}")

async def main():
    print("Scanning for BLE devices...")
    devices = await BleakScanner.discover()
    if not devices:
        print("No BLE devices found.")
        return

    for i, device in enumerate(devices):
        print(f"{i}: {device.name or 'Unknown'} [{device.address}]")

    index = int(input("Select a device by index: "))
    if 0 <= index < len(devices):
        await list_services(devices[index].address)
    else:
        print("Invalid index selected.")

if __name__ == "__main__":
    asyncio.run(main())

Here is the output when I select the Polar H10 for listing all services:

Scanning for BLE devices...
0: Polar H10 D6CEAD20 [E3:49:CE:CE:DE:27]
1: Unknown [39:1A:2B:DF:E4:3F]
2: TY [1F:EE:D1:06:8A:51]
3: Unknown [A0:D7:F3:28:7F:33]
Select a device by index: 0
Connected to E3:49:CE:CE:DE:27

Service: 00001800-0000-1000-8000-00805f9b34fb | Generic Access Profile
  Characteristic: 00002a00-0000-1000-8000-00805f9b34fb | Device Name
  Characteristic: 00002a01-0000-1000-8000-00805f9b34fb | Appearance
  Characteristic: 00002a04-0000-1000-8000-00805f9b34fb | Peripheral Preferred Connection Parameters
  Characteristic: 00002aa6-0000-1000-8000-00805f9b34fb | Central Address Resolution

Service: 00001801-0000-1000-8000-00805f9b34fb | Generic Attribute Profile
  Characteristic: 00002a05-0000-1000-8000-00805f9b34fb | Service Changed
    Descriptor: 00002902-0000-1000-8000-00805f9b34fb

Service: 0000180d-0000-1000-8000-00805f9b34fb | Heart Rate
  Characteristic: 00002a37-0000-1000-8000-00805f9b34fb | Heart Rate Measurement
    Descriptor: 00002902-0000-1000-8000-00805f9b34fb
  Characteristic: 00002a38-0000-1000-8000-00805f9b34fb | Body Sensor Location

Service: 0000180a-0000-1000-8000-00805f9b34fb | Device Information
  Characteristic: 00002a29-0000-1000-8000-00805f9b34fb | Manufacturer Name String
  Characteristic: 00002a24-0000-1000-8000-00805f9b34fb | Model Number String
  Characteristic: 00002a25-0000-1000-8000-00805f9b34fb | Serial Number String
  Characteristic: 00002a27-0000-1000-8000-00805f9b34fb | Hardware Revision String
  Characteristic: 00002a26-0000-1000-8000-00805f9b34fb | Firmware Revision String
  Characteristic: 00002a28-0000-1000-8000-00805f9b34fb | Software Revision String
  Characteristic: 00002a23-0000-1000-8000-00805f9b34fb | System ID

Service: 0000180f-0000-1000-8000-00805f9b34fb | Battery Service
  Characteristic: 00002a19-0000-1000-8000-00805f9b34fb | Battery Level
    Descriptor: 00002902-0000-1000-8000-00805f9b34fb

Service: 6217ff4b-fb31-1140-ad5a-a45545d7ecf3 | Unknown
  Characteristic: 6217ff4c-c8ec-b1fb-1380-3ad986708e2d | Unknown
  Characteristic: 6217ff4d-91bb-91d0-7e2a-7cd3bda8a1f3 | Unknown
    Descriptor: 00002902-0000-1000-8000-00805f9b34fb

Service: fb005c80-02e7-f387-1cad-8acd2d8df0c8 | Unknown
  Characteristic: fb005c81-02e7-f387-1cad-8acd2d8df0c8 | Unknown
    Descriptor: 00002902-0000-1000-8000-00805f9b34fb
  Characteristic: fb005c82-02e7-f387-1cad-8acd2d8df0c8 | Unknown
    Descriptor: 00002902-0000-1000-8000-00805f9b34fb

Service: 0000feee-0000-1000-8000-00805f9b34fb | Polar Electro Oy
  Characteristic: fb005c51-02e7-f387-1cad-8acd2d8df0c8 | Unknown
    Descriptor: 00002902-0000-1000-8000-00805f9b34fb
  Characteristic: fb005c52-02e7-f387-1cad-8acd2d8df0c8 | Unknown
    Descriptor: 00002902-0000-1000-8000-00805f9b34fb
  Characteristic: fb005c53-02e7-f387-1cad-8acd2d8df0c8 | Unknown

The services for ACC or Time are not listed, so this must be some vendor/device specific functionality I guess. Still investigating on this topic and would be happy to get input if someone else has more info on this topic.