Intermittent Advertisement Reception

RE: Intermittent Advertisement Reception

Simonr — Tue, 11 Jun 2019 08:00:07 GMT

Could you please try to debug this, and provide an error code if there are any. I would like to see what exactly is happening after that last event.

Please read up on the logger module for how to properly handle the nRF Logger.

Best regards,

Simon

RE: Intermittent Advertisement Reception

Jchristf — Sat, 08 Jun 2019 02:25:58 GMT

I'm using the ble_center "experimenta" CLI example, and have basically only added the logging.

Inside the BLE GAP event handler for the case: BLE_GAP_EVT_ADV_REPORT, I have inserted the below (m_scan_substring is just taking as an arg from scan on command).

if (m_scan_substring) {
ble_gap_addr_t *addrp;
addrp = &p_gap_evt->params.adv_report.peer_addr;
sprintf(str,"%02X%02X%02X%02%02X%02X",addrp->addr[0],addrp->addr[1],addrp->addr[2],addrp->addr[3],addrp-addr[4],addrp->addr[5]);
if (strstr(str,m_scan_substring)) {
NRF_LOG_RAW_INFO("!");
}
}

So I'm wondering if the problem is that NRF_LOG_RAW_INFO is not reliable inside the event handler, which is presumably an active Interrupt? Do I need to implement some sort of queue and print from that queue in the main process?

RE: Intermittent Advertisement Reception

Simonr — Wed, 22 May 2019 08:01:09 GMT

This seems very strange. First thing I'm noticing is that the last event before the "pause" only provides one exclamation mark, so there is no scan response coming. Are you able to see what happens after that last event? And even if an error occurs there, I don't see why it would take 20 seconds to start receiving advertisements again. I am guessing there is a timeout or that the central is going to sleep in some way, but it's really hard to tell when I don't know more about your application.

Are the peripheral and central both nRF52832DKs? Are you building the application based on any of the examples in the SDK, in that case, what examples, and what exactly have you changed (if anything)?

Best regards,

Simon