BLE App UART on PCA10056 not working?

[Meriba]

I'm using the original BLE App UART from nRF5_SDK_14.0.0 on a PCA10056 Board. The board is advertising, but if I want to open a BLE peer-to-peer connection, than the application stops in the app_error_fault_handler.

If i use the same BLE App UART project from the SDK on a PCA10040 Board than it works.

Does anyone know what the problem could be?

[Joakim Jakobsen]

Hi Meriba!

Could you please try to add this code to the BLE_GAP_EVT_DATA_LENGTH_UPDATE_REQUEST in your ble_evt_handler():

dl_params.max_rx_octets = 0x64;
dl_params.max_tx_octets = 0x64;
dl_params.max_rx_time_us = BLE_GAP_DATA_LENGTH_AUTO;
dl_params.max_tx_time_us = BLE_GAP_DATA_LENGTH_AUTO;

Your code should now look something like this:

Hope that helps!
Best regards,
Joakim.

[Meriba]

Hi Joakim

Thank you for your proposal... with this parameters it works fine.

Could you please explain me, what does achieve those parameters: dl_params.max_rx_octets and dl_params.max_tx_octets?

[Joakim Jakobsen]

uint16_t max_tx_octets:

/**< Maximum number of payload octets that a Controller supports for transmission of a single Link Layer Data Channel PDU. */

uint16_t max_rx_octets:

/**< Maximum number of payload octets that a Controller supports for reception of a single Link Layer Data Channel PDU. */