many n00b questions about NAN-36 example project

RE: many n00b questions about NAN-36 example project

Eliath — Tue, 04 Nov 2014 13:12:14 GMT

I got issues with your Q8.

So when you get this: C11Cxxxx-C1AD-13CD-06FC-C9BEF61C942E

How should your defines look like ?

define LBS_UUID_BASE

define LBS_UUID_SERVICE

define LBS_UUID_LED_CHAR

define LBS_UUID_BUTTON_CHAR

RE: many n00b questions about NAN-36 example project

Joseph Corteo — Wed, 16 Apr 2014 07:49:16 GMT

Agreed, nAN-36 tutorial/walk through is unclear at some points.

RE: many n00b questions about NAN-36 example project

wlgrd — Tue, 07 Jan 2014 10:08:59 GMT

Great, so everything's okay? Regarding the UUID, I don't understand why you need it to look like the one you propose. It's definately not the same. If you need a custom UUID you can have a look at this thread https://devzone.nordicsemi.com/index.php/how-to-set-uuid-for-custom-profile . Also remember the endianess of the UUID

RE: many n00b questions about NAN-36 example project

Roy — Mon, 06 Jan 2014 13:57:17 GMT

Thanks to you I got it compiling (and some help of another intern).

I am currently at 4.3.4 and I think the hard part is over.

about Question 8: The conversion to an array of bytes of the UUID confused me. nRFgo-Studio generates a random UUID that looks like this: 006Fxxxx-68C4-CAD2-2181-DDAC760BE6A3

it needs to be converted to look like this: {0x24, 0x8F, 0x00, 0x00, 0xBF, 0xA2, 0x69, 0x8B, 0x15, 0x58, 0x73, 0xA6, 0x82, 0x8A, 0x4A, 0x1D} The xxxx in the UUID I assumed where 0000 so the 3rd and 4th hex is 0x00.

about question 12: What confused me there was the use of the verb "Memset", I Memset, He Memsets, We are Memsetting

Thank you again very much for your endless dedication of answering my questions.

RE: many n00b questions about NAN-36 example project

wlgrd — Mon, 30 Dec 2013 14:23:56 GMT

As the document says, you should only need to replace the lower letters. These are only names, so please see what the defines are used for and decide for your self.
Yes, do that. lbs (LED BLE service I presume) and bas (battery service) are just names, but for better structure and readability change them.
The prototypes in an .h file, presumably ble_bas.h (formarly ble_lbs.h). This is quite standard for whatever project you are working on. Function prototypes in the header files so that other files can reach them, the function implementation in a .c-file. Do whatever suits you the best.
Yes. Look at the resulting code.
Read up on function pointers. It is used to pass a function as a parameter in another function call. I know this is hard to get your first grasp on, but you need to follow the code and see where and how it is used.
Look at the implementation of the function in the .c file. By the name: what to do on an event on the LED Battery Service
Its the write handler. The event is a write.
Where do you read it in that format?
As it says, in the service initialization.
"Remove the if-sentence checking the is_notification_supportedparameter, but leave the code inside. ", this is really self-explanatory.
We are still in the init, read some examples and you will see where they are used.
memset(&_your_struct, 0, sizeof(_your_struct)); // That is shown in the NAN.
```
char_md.char_props.read   = 1;
```
char_md.char_props.write = 1; char_md.p_char_user_desc = NULL; char_md.p_char_pf = NULL; char_md.p_user_desc_md = NULL; char_md.p_cccd_md = NULL; char_md.p_sccd_md = NULL;

// <<<---- HERE --->>> ble_uuid.type = p_lbs->uuid_type; ble_uuid.uuid = LBS_UUID_LED_CHAR

hmm, dunno :\ Don't worry about it.
Yepp.

I myself is a beginner of BLE, and know this can be quite hard to grasp if you don't have much experience with programming C. A lot of your questions could be answered if you look at similiar projects and trying to understand the flow of it. You should also get a good understanding on where to place different set of codes (.h/.c) and the use of structures.

Also, the compiling errors you are getting; please do some more changes to your code and paste the errors you don't understand in your question.

RE: many n00b questions about NAN-36 example project

Roy — Thu, 19 Dec 2013 09:36:33 GMT

I found there is an (almost) fully working version of the project in the nAN-36 folder. I'm going to check that out and try and get it working.

For the Nordic Semiconductor employers who will make v1.1 or v2.0 of the nAN-36: The walkthrough/tutorial is a disaster for the beginning programmer with BLE (in my opinion). Please make some more use of the following: