ANCS and nrf8001

[Emp2014]

I used nrf8001 to implement ANCS.It working fine.But when it disconnect for a while and reconnect(reconnect successed).I found Iphone can't send any ANCS message to nrf8001 until turn off/on bluetooth on iphone and reconnect again and it can work fine.

Is it IOS bug or nrf8001 limitation ?

[Emp2014]

The Control point don't work when this issue happen.when I sending data always got pipe error.

[David Edwin]

Can you paste message contents of the Pipe Error that you got. If you are using the Arduino SDK , you can turn on the debug printing using the lib_aci_debug_print(true) .

[Emp2014]

As you suggested .I'm doing the following

void lib_aci_pipe_status_hook(aci_evt_t *p_rcvd_evt_data) { if (lib_aci_is_discovery_finished()) { if (lib_aci_is_pipe_available(PIPE_ANCS_NOTIFICATION_SOURCE_RX)) { lib_aci_close_remote_pipe(PIPE_ANCS_NOTIFICATION_SOURCE_RX); } }

.....

}

But sometime get the pipe error(0x92) when Send the Close Remote Pipe,(The success rate is not 100%).

have you got any idea what am I doing wrong here?

[David Edwin]

1. Is there any Error Data that is present in the Pipe Error Event ? I suspect there is some Error Data present.

2. The code as you have it will call lib_aci_close_remote_pipe() multiple times when multiple pipe status events arrive so some of them will definitely fail, so adding a guard condition so that it is not sent multiple times is good.

3. Once you have successfully closed the pipe and the pipe is now present in the closed pipes, then you need to do an Open Remote pipe in the same way as you did the close above.

[David Edwin]

Note: The open and closing of the remote pipes is relevant only for RX pipes and not for TX pipes on the remote GATT Server.