Do BLE HCI_EVT occupy a packet slot on the connection interval?

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

AmiguelS — Sun, 05 Jun 2016 14:23:55 GMT

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

Petter Myhre — Fri, 03 Jun 2016 13:09:49 GMT

Agree. It seems this is answered then. Maybe you can accept my answer?

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

AmiguelS — Fri, 03 Jun 2016 13:00:53 GMT

I only have one dev board. I have tested with another phone, a Samsung S5, and managed to get 4 Notifications/CI and 3 Write Commands/CI. So I would say the limitation is on the Android side.

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

Petter Myhre — Fri, 03 Jun 2016 11:52:05 GMT

I dont' have that one, so I can't test. Do you have more than one nRF51 development board? You can try to sniff the connection with nRF Sniffer.

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

AmiguelS — Fri, 03 Jun 2016 11:48:12 GMT

Its a Motorola Moto G version 2 with Android 5.0.2

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

Petter Myhre — Fri, 03 Jun 2016 10:28:00 GMT

I see. That example is configured in a way so that it can receive several write commands in a connection interval. I suspect that the Android device limits it to 1. What model are you using?

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

AmiguelS — Fri, 03 Jun 2016 09:53:09 GMT

This one. I made the proper changes for it to use write no response, and confirmed it was properly configured using nRf Master Control Panel.

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

Petter Myhre — Fri, 03 Jun 2016 09:49:07 GMT

Notification example?

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

AmiguelS — Fri, 03 Jun 2016 09:47:48 GMT

I'm using S130 v2, SDK 11 and custom firmware. I took the BLE Notifications example and added a couple of characteristics.

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

Petter Myhre — Fri, 03 Jun 2016 06:54:43 GMT

I'm sorry, I thought you were sniffing the BLE data packets on air, but you are snooping the HCI packets in Android. I didn't know that was possible. The flow control of packets sent in each connection interval is handled in the link layer. This is not included in the snoop file. What version of the S130 are you using? What SDK? What example in the SDK?

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

AmiguelS — Thu, 02 Jun 2016 15:44:55 GMT

I have not filtered out any packets. That is the complete snoop file. If there are packets missing, then it is Android that is filtering them out of the file. I have included a link to the snoop file.

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

Petter Myhre — Thu, 02 Jun 2016 14:35:03 GMT

Great, but I'm not interested in the notifications, or the HCI ACL packet. I'm interested in the on air packet, which I guess you can display by expanding "Bluetooth". It seems you have filtered out empty packets? I want to see the empty packet from the slave when you send the write command.

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

AmiguelS — Thu, 02 Jun 2016 13:18:06 GMT

I've added them to the original post

RE: Do BLE HCI_EVT occupy a packet slot on the connection interval?

Petter Myhre — Thu, 02 Jun 2016 10:19:00 GMT

They do not. Could you include a screenshot of the contents of the write command packet from the master and the packet from the slave?