BLE_SEND_DATA In blocking state

[Ahtasham Baig]

Hi ,

I am working on a project where i need to publish wifi scans over ble , issue is that when ever we try to send data over it either send or not sent to avoid data loss, using ble_app_uart example used do while loop for trying until data is sent. Product is based on FreeRTOS where data to be published is read on event from serial uarte0 and then published to ble . this blocking state is causing fatal error and causing data loss

[Ahtasham Baig]

It always return NRF_ERROR_NOT_FOUND when data is not being sent

[Susheel Nuguru]

can you show the screen shot of the call stack when you get the NRF_ERROR_NOT_FOUND error.

Which API is returning this error?

[Susheel Nuguru]

Does not look like i have access, i have requested access now.

[Ahtasham Baig]

Updated Access 
drive.google.com/.../view

[Susheel Nuguru]

You were not supposed to have a connection handle that has a value more than the setting BLE_CONN_STATE_MAX_CONNECTIONS you have. Either the conn_handle is being used uninitialized or something is very wrong with the statemachine of you application. What is the call trace of functions when this check failed?

[Ahtasham Baig]

static uint16_t m_conn_handle = BLE_CONN_HANDLE_INVALID;         
Connection handle is initialized as above , I trying to print the connection handle value before sending data in interger it print 48 whereas in hex 30 (When data is not being sending) and 0 when data is being sending... I am only connecting to one Android Application at a time

[Susheel Nuguru]

when you are only connected to one android device, then most likely the conn_handle is always 0 (while in connection)

Ahtasham Baig said:

i tried to debug the code and found the conn_handle >= BLE_CONN_STATE_MAX_CONNECTIONS, which is cause causing connection state invalid

 The above failure can only happen 

1. If you pass wrong (uninitialized  conn_handle as argument
2. you are trying to send data even before the connection is established.

[Ahtasham Baig]

Thank you issue resolved I tried to Pass 0 to connection handle before sending data it is now working