Help Needed To Write Data on BLE Device

react-native-ble-manager: ^8.0.2 react-native: ^0.68.1 iOS/Android: 11 Expected behaviour

LED Light Strip that’s connected to the device should change colors on WriteWithoutResponse call.

Actual behaviour

WriteWithoutResponse passes successfully but device shows no change in color.

Steps to reproduce

Successful connection to LED Light Strip Send WriteWithoutResponse Call Here is the Response from BLE Device That I’m getting from LED Strips. I want to write on BLE Device and there is only one service that has property to writewithoutresponse but I’m confused a bit that how can I write on BLE By using This Characteristic. Below Code is Giving Success But Led Is Doing Nothing. I’m Using Below Function But I’m unable to figure out that which data will be passed: BleManager.writeWithoutResponse( peridata.id, fullUUID(peridata.services[2].uuid), fullUUID(peridata.characteristics[4].characteristic), [0x00, 0x01, 0x02], ) .then(() => { console.log('Success' ); }) .catch(error => { console.log('======'); console.log(error); }); l

[anees17861]

@jaferi512 Please try the following things:

1. Make sure service discovery is complete before writing
2. Hardcode service and characteristic to write to instead of picking from array
3. If the hardware developer is in your team, ask him to check logs on their side as well

[jaferi512]

@anees17861 Hardware developer has told me to send values like this.That’s why I’m trying like this.