Processing when BLE is disconnected during data transmission with BLE

[musashiyama]

I am using STM32WB5MMGH6 as a slave and communicating with the host using BLE.
The question I would like to ask here is is there a way for the user to detect when data transmission fails due to BLE disconnection, etc. during data transmission?
The tool I use is STM32CubeIDE, which automatically generates the FW using MX.
Thank you.

[Issamos]

Hello @musashiyama 

I suggest you to take a look at the AN5270. That may help you.

Best regards.

II

[musashiyama]

Thank you for answering. I'm currently reading and considering AN5270. However, since I am new to BLE and STM32, I don't know which one is better or how to use it. If you have any knowledge, please let me know.
What I want to know is
・Notification of completion of data packet transmission from slave
or
・Get the status of the buffer sending data from the slave
is.
If anyone knows, please let me know.