Service example not running?

[jj8431]

Hi,

I'm having problem with the example code in the "Bluetooth low energy Services, a beginner's tutorial", the code was downloaded from github.

I'm using SES V3.5 for Ubuntu, and nRF5_SDK_15.0.0_a53641a .

I didn't make any modifications to the code, it compiles with no error. But when I tried to run it (according to the tutorial it would advertise as a device named "nRF5x", but the code will stop at the "ble_stack_init" after returned from the line 559:

    err_code = nrf_sdh_ble_enable(&ram_start);

I found the err_code was 4, but have no idea what is going on, because the code was 'original'.

Any suggestions about what can I do about it?

Thanks.

[Hakon]

Hello, try the following,

select your project in the "Project Items" list

go to Project->Edit Options...

select "Common" under Private Configurations

go to the linker section and double click "Section Placement Macros"

set RAM_START=0x20002220 and RAM_SIZE=0xdde0.

Hope this helps.

[jj8431]

So the RAM start address is increased 8 bytes, could you please explain how to know where does the application ram start?

[Hakon]

You can read about it here

https://github.com/bjornspockeli/custom_ble_service_example.

The soft device takes more memory because of the inclusion of vendor specific UUID. The project file in the git repo is updated now to use the correct RAM settings, so no reason to worry about it anymore.