BLE_NUS_EVT_RX_DATA triggering twice in my handler

Question

Hello 
 I have a question i cannot figure out. I'm using my phone to send string on my NUS client (NRF52 with SDK15.3.0 and FreeRTOS) and the event BLE_NUS_EVT_RX_DATA is triggered twice in my handler each time i send only one string ? I'm using serial bluetooth terminal application. 
 I don't know why this happens. Is it a retry from the sender ? Do i need to ack the sender on the first time ? 
 If you have any idea about this, feel free to share 
 Regards, 
 Aurélien

haakonsh · Accepted Answer

" I guess this task is calling my handlers so i think i don't need to schedule them on my own. " You're probably on correct, but you should verify it by reading the implementation of nrf_sdh_freertos_init and on_ble_central_evt, one of these must call the event handler of the NUS library.

BLE_NUS_EVT_RX_DATA triggering twice in my handler

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