I am getting intermittent pickup of advertising packet from a peripheral known to advertise every 2 second. Basically I get ~20 sec gaps where nothing is received.
Below is my debug output from my central app where I output a dot each time the BLE_GAP_EVT_ADV_REPORT event is fired. I only output an exclamation sign when peer address matches a hardcoded address for the peripheral advertising every 2 second.
The dots are pretty constant based on other surrounding devices, and the regular 2 exclamation signs are the advertising packet and the scan response, as expected.
What is strange is the gap in time (~20s) where other devices are still recieved, but nothing is received from that particular device. That pattern repeats regularly.
I have verified with NRFconnect that the devices is in fact advertising even in these gaps.
I'm using SD 132 and SDK 15.3 on PCA10040. I checked that channel_mask is all zeroes, thinking it might be channel related...
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