Bluetooth data update notifications not getting fired

Question

I am facing some issue while reading data from bluetooth peripheral. We have a bluetooth device with the following gatt details.

<service uuid="service id" advertise="true">
    <description>XXXX service</description>
    <characteristic uuid="characteristic id" id="xgatt_data">
        <description>Data</description>
        <properties write="true" indicate="true" />
        <value variable_length="true" length="20" type="user" />
    </characteristic>
</service>

What i am doing is

• Search for the peripheral who is having "service id"
• Connect to the peripheral once found and keeping a strong reference to it.
• After connecting setting delegate and searching for all the services it providing
• loop all services and scan for characteristics once we discover service
• after i found desired characteristic i am enabling notification
• On button click i am writing data to characteristic

I am able to connect to the device. and i can send commands(data) to peripheral also. Once we send any command to device it will send some data in response. I can see logs at the device, it is sending some data back once it receive any command. But in my iOS device i am not able to read the data by using either notification or normal read functions. What i am missing here?

Answer 1

I found the issue. Actually issue is with the emulator. And now i can get data update indications and able to write data to BLE with only "read" and "indicate" properties.