I use two nrf51 chips, one of which works as central and second one as peripheral. After the DM_EVT_LINK_SECURED event is generated on the peripheral side I'm starting the app_timer in single_shot mode with a 15ms period. Inside of this timer, the characteristic is updated (in the same way as in "Bluetooth low energy Characteristics, a beginner's tutorial") with only one byte of data. On the central side I use lbs client profile and after BLE_GATTC_EVT_HVX is generated I change the flag in the program and terminate the connection.
Now, the problem is this notification send by server (peripheral) never reach the client (central). To actually send data I must repeat updates of the characteristic and only after few updates one of the notification come to the client. Could someone explain to me why this happens and how to overcome this? I use SDK 11
