How to change the characteristic property from "notify" to "indicate"?

RE: How to change the characteristic property from "notify" to "indicate"?

WrightLin — Wed, 29 Aug 2018 13:58:21 GMT

Hi Bui:

After I enable the indications property by nrfConnect "AGAIN", the application seems to work fine.
I have no idea why the application return error in the situation that I opened nrfConnect for the first time and the indication showed "enable". Maybe it's a bug of nrfConnect?

But this result means that the application code is working. Thanks for your help again!!

RE: How to change the characteristic property from "notify" to "indicate"?

WrightLin — Wed, 29 Aug 2018 13:04:57 GMT

Hi Bui :

I record the error code after ble_nus_data_send();

it return 8 , which means "NRF_ERROR_INVALID_STATE"

it's strange that when I ran the application in debug mode, IDE didn't stop even it seems that there was some error just happened.

RE: How to change the characteristic property from "notify" to "indicate"?

WrightLin — Wed, 29 Aug 2018 12:37:06 GMT

Hi Bui, thanks for your suggestion.

I will try to record the packet by sniffer, and here is ble_nus.c/.h files.

devzone.nordicsemi.com/.../ble_5F00_nus.rar

RE: How to change the characteristic property from "notify" to "indicate"?

Hung Bui — Wed, 29 Aug 2018 11:07:28 GMT

Hi Lin,

You would need to provide ble_nus.c and ble_nus.h so we can test here.

Could you please check when you call ble_nus_data_send() do you get NRF_SUCCESS ?

A sniffer trace would be nice to have to see if the indication actually sent from the device or not.

RE: How to change the characteristic property from "notify" to "indicate"?

WrightLin — Wed, 29 Aug 2018 08:10:31 GMT

here is my testing project.
devzone.nordicsemi.com/.../ble_5F00_app_5F00_uart_5F00_pm_5F00_justwork_5F00_bonding_5F00_indicate.rar