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dotintent / react-native-ble-plx

React Native BLE library
Apache License 2.0
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How to activate sensor and monitoring data like blood pressure, heart rate on watch device if we know only service uuid and characteristic uuid #1175

Closed silldepair closed 8 months ago

silldepair commented 8 months ago

Prerequisites

Question

i am new to bluetooth development, i want to monitor watch device that can record user blood pressure and heart rate. i already connect and discover service and characteristic uuid, but when i call monitor there nothing happen, is there any step i missing ? here is the service and character uuid photo1708592652

and here is my code : device.monitorCharacteristicForService(serviceUuid, charUuid, (error, characteristic) => { DEV && console.log('monitor characteristic eror:', error); if(error){ DEV && console.log('errorc',JSON.stringify(error)); }else{ console.log('===',characteristic?.value); }

            })
dominik-czupryna-withintent commented 8 months ago

Have you checked whether it was described in the specification for a profile eg. https://www.bluetooth.com/specifications/specs/blood-pressure-profile-1-1-1/ ?

silldepair commented 8 months ago

sorry i dont understand, can you give more explanation or sample code of how i should do it. i dont understand bluetooth development from left to right

dominik-czupryna-withintent commented 8 months ago

Currently we have no plans to prepare implementation examples for specific BLE services. We are currently focused on providing ability to manage the BLE connection from the RN. The package has a general implementation example which can be found in repo - https://github.com/dotintent/react-native-ble-plx/tree/master/example. More detailed documents for BLE profiles/services specifications can be found at bluetooth website - https://www.bluetooth.com/specifications/specs/. To get to know the device you are working with, I recommend using the nRF connect application - https://play.google.com/store/apps/details?id=no.nordicsemi.android.mcp&hl=en&gl=US / https://apps.apple.com/pl/app/nrf-connect-for-mobile/id1054362403?l=en.