Long running task

[mRo]

Hi,

I have following use case. The write operation on one of the characteristics triggers some UART job which takes about 1 / 1.5 seconds to complete. After the completion, results are sent through notification by use of ble_gatts_hvx method.

This job is started using app_sched_event_put method to prevent the application intterupts. My problem is that even though this job should run independently of BLE STACK (it should even be interrupted by BLE STACK) i always get disconnections after running the job which I guess are caused by blocking BLE STACK.

[Stefan Birnir Sverrisson]

Anything that is put into the scheduler queue executes in the main function, i.e. with the lowest priority. The BLE softdevice (BLE stack) runs with the highest priority so any application interrupt can not interrupt the softdevice.

Do you get any error message when you call ble_gatts_hvx?

What code template are you using? There is one available here for the UART and BLE.