Null data is coming in BluetoothGattCharacteristic getValue() method

[Parita]

I am using nRF32 ble module. I am not able to get the value from BluetoothGattCharacteristic. I have declared an object of BluetoothGattCharacteristic and getting the value by using getValue() method. In onServiceDiscovered() method i am getting null value. Can anyone please help in this.

[Hung Bui]

You would need to find the service and characteristic using Service discovery first. 

Please have a look inside the nRF Blinky app code and follow what we have there. 

[Parita]

ble module is discoverable and also send data from android app to nRF52 but cannot notify or read data coming from nRF52 ble UART 

[Hung Bui]

Please test and study the nRF Blinky app. 

[Parita]

we are not using nordic jdk for our applications. we are using custom service of nRF52 ble module

[Hung Bui]

I understand, but to test the app, you can try to use our SDK for testing. 

Another suggestion is to use nRF Connect app to test. 

[Parita]

it will be helpful if i get the source code of nRF connect app

[Hung Bui]

No, the source code is not published. If it works with nRFConnect app, but not on your app. I would suggest you to have a look at the nRF Blinky app source code. 

[Parita]

ok thank you