how to create custom service?

[IC]

how to create custom service in order to send dummy message, not from the console, I have to make one char arr[]="hello" this is a fixed string, then where i have add this string as data and what are the parameters are required to create simple custom service? please tell me the stepwise procedure to do this.

I don't want to send the data by this type of window as a shown in the below picture and also by mobile app.

I am following below programs:

ble_ap_uart_s132_pca10040(periphral) ble_app_uart_c_s132_pca10040(central)

[Roger Clark]

@endnote

Good point.. I hadn't thought about it that way. But... how does the advertisng packet send the "incomplete list of 16 bit services" type, if I appear to be using 128 bit services ?

[endnode]

And I haven't thought about this one;) Sure all Adv./Scan Rsp. data must be managed separately (as they are) so you will just use different AD TAG and fill the content with 16-bit value(s)...

[Joakim Jakobsen]

I dont know if I'm understanding what you want to achieve. If you simply want to send the string "Hello" from the peripheral to the central, you can set up a timer on the peripheral and in the timer_handler you can send the string e.g every 10 seconds. You can use the function ble_nus_string_send() to send your string from the peripheral to the central. And here you would have to use the ble_app_uart / ble_app_uart_c examples.

[Roger Clark]

LOL... OK.

As I'm a long way through making the hrs into a custom / template 16 bit service, I think I may as well continue... But I may also try using the custom 128 bit service linked by @Jaokim, with the BLE_UUID_TYPE_BLE, and see how that works out.

[endnode]

I personally prefer formatting Adv. and Scan rsp. data manually, it's just up to 2x31 bytes. If you already hold UUIDs and similar things in constants at compilation time why not doing the same with these strings if they are static as well? Surely if you switch to BT SIG UUID base for services other then standard GATT and GAP then you need to change AD tag but that's trivial, the rest of formatting is pretty easy.