Connectable beacon

[Wim]

In the nRF5 SDK v15.0.0 there is an example for beacon. (in my case ble_app_beacon_pca10040_s132)

This example works fine and acts as a non-connectable unidirected beacon.

But I am looking for a connectable beacon. (Acts as a beacon, but can also be connected to retrieve other data).

Is there an example software available?

[Mttrinh]

Hi,

We don't have any examples that does exactly this. You can change the advertising type to connectable in advertising init if you want to allow connections. 

[Mttrinh]

You also have to change your NRF_SDH_BLE_PERIPHERAL_LINK_COUNT to 1 and your RAM accordingly. Change your RAM_START to 0x20001D88 and RAM_SIZE to 0xE278.

[Wim]

I changed:

In sdk_config.h

   #define NRF_SDH_BLE_PERIPHERAL_LINK_COUNT 1  //was 0

In nrf_sdh_ble.c:

   #define RAM_START       0x20001D88  //was 0x20000000

However I could not find RAM_SIZE

And I get the error messages:

<warning> nrf_sdh_ble: Insufficient RAM allocated for the SoftDevice.
<warning> nrf_sdh_ble: Change the RAM start location from 0x200018A8 to 0x20001D88.
<warning> nrf_sdh_ble: Maximum RAM size for application is 0x10000.
<error> nrf_sdh_ble: sd_ble_enable() returned NRF_ERROR_NO_MEM.
<error> app: Fatal error
<warning> app: System reset

How can I solve thie?

[Mttrinh]

Which IDE are you using?

[Wim]

SEGGER Embedded Studio for ARM Release 3.34a Windows x86

[Mttrinh]

You can find RAM_size by:

Right click on your project -> "Edit Options" -> At top left change your configurations to common -> Linker -> "Section Placement Macros"

[Ameer Usman]

I am using nRF52832 with SDK 15.3.0 but I am getting this error:

at here:

Any leads would be greatly appreciated.

[Mttrinh]

Hi,

That error means NRF_ERROR_NO_MEM, which means you have to allocate more memory. You have to change your RAM_START and RAM_SIZE.

[Ameer Usman]

I am using nRF52832, can you suggest how much should I put its values too?

[Ameer Usman]

I applied the value:

RAM_START=0x20002C60

RAM_SIZE=0xD3A0

Inside the linker option macros (can view guide from here: https://devzone.nordicsemi.com/f/nordic-q-a/34853/nrf_shd_ble_enable-function-error-code-4-no-memeory-for-operation) and it worked .

Thank you!