Re: Digest for btstack-dev@googlegroups.com - 2 updates in 1 topic

[Justin John]

Hi Matthias,

I wanted to know the page/inquiry scan mode to satisfy the application state operation. Anyways, I can avoid that.

However on the successful connection I want to make the device undiscoverable. Currently I am doing it under the RFCOMM_EVENT_INCOMING_CONNECTION case.

 case RFCOMM_EVENT_INCOMING_CONNECTION:

                     // data: event (8), len(8), address(48), channel (8), rfcomm_cid (16)

                     rfcomm_event_incoming_connection_get_bd_addr(packet, event_addr);

                     rfcomm_channel_nr = rfcomm_event_incoming_connection_get_server_channel(packet);

                     rfcomm_channel_id = rfcomm_event_incoming_connection_get_rfcomm_cid(packet);

                     rfcomm_accept_connection(rfcomm_channel_id);

                     gap_discoverable_control(0); // make device undiscoverable to save power

                     break;

Is the above code right to make the device undiscoverable?

Thanks

Justin

On Sat, Aug 7, 2021 at 3:27 PM <btsta...@googlegroups.com> wrote:

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• Digest for btsta...@googlegroups.com - 1 update in 1 topic - 2 Updates

Digest for btsta...@googlegroups.com - 1 update in 1 topic

Justin John <johnm...@gmail.com>: Aug 06 06:27PM +0530 Hi Matthias,   I am looking forward to BR/EDR (Classic) and the intention is to let the application know that page scan has started after issuing gap_discoverable_control(1) command. In the same way I want to let the application know about the disconnection after the gap_discoverable_control(0) command is issued.   From the BTStack Manual, Under profiles I see below code snippet   int main(void){ ... // make discoverable gap_discoverable_control(1); btstack_run_loop_execute(); return 0; } void packet_handler (uint8_t packet_type, uint8_t *packet, uint16_t size){ ... switch(state){ case W4_CHANNEL_COMPLETE: // if connection is successful, make device undiscoverable gap_discoverable_control(0); ... } }   However I am not able to trace W4_CHANNEL_COMPLETE in the source code.   Thanks Justin

Matthias Ringwald <matthias...@gmail.com>: Aug 07 11:03AM +0200 Hi John   Could you tell why you want/need to know when the page/inquiry scan mode has changed?   When you call gap_discoverable_control, the stack will send the corresponding HCI Command immediately and the scan mode will change within a few milliseconds   Best Matthias   Sent from my iPhone

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[Matthias Ringwald]

Hi Justin

Yes, disabling discoverable (inquiry scan) will both safe a bit of energy as well as provide a tiny bit more bandwidth.

Your code below will work as intended.

Best
Matthias

> On 9 Aug 2021, at 11:31, Justin John <johnm...@gmail.com> wrote:
>
> Hi Matthias,
>
> I wanted to know the page/inquiry scan mode to satisfy the application state operation. Anyways, I can avoid that.
> However on the successful connection I want to make the device undiscoverable. Currently I am doing it under the RFCOMM_EVENT_INCOMING_CONNECTION case.
> case RFCOMM_EVENT_INCOMING_CONNECTION:
> // data: event (8), len(8), address(48), channel (8), rfcomm_cid (16)
> rfcomm_event_incoming_connection_get_bd_addr(packet, event_addr);
> rfcomm_channel_nr = rfcomm_event_incoming_connection_get_server_channel(packet);
> rfcomm_channel_id = rfcomm_event_incoming_connection_get_rfcomm_cid(packet);
> rfcomm_accept_connection(rfcomm_channel_id);
> gap_discoverable_control(0); // make device undiscoverable to save power
> break;
>
> Is the above code right to make the device undiscoverable?
>
> Thanks
> Justin
>
> On Sat, Aug 7, 2021 at 3:27 PM <btsta...@googlegroups.com> wrote:
> btsta...@googlegroups.com Google Groups

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