ble_app_hrs_c --scan stopped

[Mike]

I programmed nRF51822 with S120 softdevice and ble_app_hrs_c application to scan beacons. It works fine but have one problem.

• It scans beacons for about 10 seconds then stop scanning for about 10 seconds and repeat scanning.

What makes this kind of symptoms scanning-stop-scanning-stop every 10 seconds period.

[Mike]

I have captured beacon data at "on_ble_evt" S120 reply event for 10 seconds then no reply for 10 seconds, I tested with one nordic format beacon.

Symptom:

• using one beacon every second advertising.
• successfully scan beacon and send UART 10~11 times, it's about 10 seconds then halt
• After about 10 seconds again scan beacon and send UART.
• Repeat above situation.

Durig halt state, I advertise anothe beacon then it scan successfully so this symptom is related in scanning same beacon continueously.

[Mike]

...

#define SCAN_INTERVAL              0x00A0                             /**< Determines scan interval in units of 0.625 millisecond. */

#define SCAN_WINDOW                0x0050                             /**< Determines scan window in units of 0.625 millisecond. */

Above is default setting interval I used. I mean that in the case I advertise only one beacon, it scans 10 seconds and stop 10 seconds then repeat scan and stop. During scanning stopped if I advertise another beacon, it scans another beacon.