Increase number of Characteristics

RE: Increase number of Characteristics

Moe — Mon, 08 Oct 2018 06:01:33 GMT

Hey Marjeris,

It worked. I doubled the Value of the NRF_SDH_BLE_GATTS_ATTR_TAB_SIZE.

Thank you so much for your help

RE: Increase number of Characteristics

Marjeris Romero — Fri, 05 Oct 2018 14:08:57 GMT

Hi Moe,

Sorry, I forgot to mention you also need to increase NRF_SDH_BLE_GATTS_ATTB_TAB_SIZE if you have a large number of characteristic in your custom service.

If you are expecting debug information from a particular module you also need to enable NRF_LOG and change the default log level to 4 for the specific module.

Maybe you can upload your project here so I can take a look at the code inside if increasing the attribute table size does not work.

Best Regards,

Marjeris

RE: Increase number of Characteristics

Moe — Fri, 05 Oct 2018 11:48:18 GMT

Hey Marjeris,

The first time it told me to change the Adress and Size to 0x200022B0 and 0xDD50 which I did. The NRF_LOG_DEFAULT_LEVEL change (to 4) didn't printed any new information. Due to this I added in the creation of the characters a NRF_LOG_INFO to print the error code (thats the <info> app: XY ), that I don't have to debug everything step by step and still can see if something changed.

RE: Increase number of Characteristics

Marjeris Romero — Fri, 05 Oct 2018 11:17:28 GMT

Hi,

Did you increase the RAM size?

If you set the NRF_LOG flag to debug you will print the debug messages and that will make your code easier to debug. Just search in the sdk_config.h for NRF_LOG_DEFAULT_LEVEL and change the level flag from 3 (Info) to 4 (debug).

// <o> NRF_LOG_DEFAULT_LEVEL  - Default Severity level
 
// <0=> Off 
// <1=> Error 
// <2=> Warning 
// <3=> Info 
// <4=> Debug 

#ifndef NRF_LOG_DEFAULT_LEVEL
#define NRF_LOG_DEFAULT_LEVEL 4
#endif

Best Regards,

Marjeris

RE: Increase number of Characteristics

Moe — Thu, 04 Oct 2018 07:45:53 GMT

Hi Marjeris,

This is what happens if I just upload the Code.

The Picture below shows the Log if I I am in the Debugger

If I start the Debugger it stops at the NRF_BREAKPOINT_CMD. Before the Breakpoint the funktion "characteristic_add" returns the error code 4

RE: Increase number of Characteristics

Marjeris Romero — Thu, 04 Oct 2018 07:19:28 GMT

Hi Moe,

Did you change the RAM size and that didn't work either? Could you get me a printscreen of the debug terminal?

-Marjeris

RE: Increase number of Characteristics

Moe — Thu, 04 Oct 2018 05:59:31 GMT

Hi SteveHx,

thank you for the response. Unfortunately it didn't worked in my case. Was the UUID in your case the same or did it changed form the different characteristics?

RE: Increase number of Characteristics

Moe — Thu, 04 Oct 2018 05:50:14 GMT

Hey msromero,

thank you for the fast response. With the "NRF_LOG_ENABLED" it told me to change the RAM size. The Log Output is: " <error> app: Fatal error" and the error code is still 4. Increasing the NRF_SDH_BLE_VS_UUID_COUNT didn't worked either. The error Codes are still the same and I can't get more Characteristics.

RE: Increase number of Characteristics

Marjeris Romero — Wed, 03 Oct 2018 13:21:03 GMT

Hi Moe,

As Steve suggested, you may need to increase NRF_SDH_BLE_VS_UUID_COUNT. In addition to this you may also need to increase the RAM size allocated for the Softdevice. If you enable the NRF_LOG module you will get a message if this is necessary. To enabled NRF_LOG go to sdk_config.h and search for "NRF_LOG_ENABLED"

// <e> NRF_LOG_ENABLED - nrf_log - Logger
//==========================================================
#ifndef NRF_LOG_ENABLED
#define NRF_LOG_ENABLED 1
#endif

Best Regards,

Marjeris

RE: Increase number of Characteristics

SteveHx — Tue, 02 Oct 2018 19:35:48 GMT

I ran into this several months ago. When I ran into it again just now, i couldn't remember the answer, but managed to dig back thru my emails and found this:

Kevin_L 5 months ago in reply to Kevin_L

Actually, I just found a better solution. In sdk_config.h, I just increased NRF_SDH_BLE_VS_UUID_COUNT, and that solved the issue.

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It took me a while to find that reference in my current project, but it worked fine once I found it.