Make Nordic NRF52840DK as Server while other BLE Transmitter as client.

[Vinay Parashar]

Hi Team,

We are trying to make Nordic NRF52840DK board to act as a server (BLE ) where as we are trying to connect other board (Not the Nordic chip) has only transmitter but unable to do it.

Tried with example "ble_app_gatts" by changing MAC address with other device's MAC (Peripheral-Device Identification Unique 48 Bit Device ID).

Kindly suggest best possible steps.

[haakonsh]

We need some more information.

1. What is it that you're trying to do exactly? Can you rephrase your use-case?
   
   
2. What is it that you have done to achieve said use-case?
   
   
3. What behavior do you expect to see, and what behavior do you observe? 

[Vinay Parashar]

Hi 

We have NRF52840DK board, trying to make it as Server; acting as bluetooth gateway that will connect to many clients; these clients will have only transmitter (neither have receiver, nor have Nordic Chip-set).   

As soon as Client transmit first message (only message)(e.g. advertise), this message shall be enough to indicate that an event has occurred  to the NRF52840DK board that is acting as bluetooth gateway(server), No other handshake message (scan response etc.) shall be triggered or received. Because client has only transmitter.

How can we configure  NRF52840DK board as server that shall give a call-back function when first message (e.g.advertise) is received by stack and server can extract payload of first message.

Hope it has cleared the use-case and requirements.

[Vinay Parashar]

Detailed scenario as follow:

Hi 

We have NRF52840DK board, trying to make it as Server; acting as bluetooth gateway that will connect to many clients; these clients will have only transmitter (neither have receiver, nor have Nordic Chip-set).   

As soon as Client transmit first message (only message)(e.g. advertise), this message shall be enough to indicate that an event has occurred  to the NRF52840DK board that is acting as bluetooth gateway(server), No other handshake message (scan response etc.) shall be triggered or received. Because client has only transmitter.

How can we configure  NRF52840DK board as server that shall give a call-back function when first message (e.g.advertise) is received by stack and server can extract payload of first message.

Hope it has cleared the use-case and requirements.

[haakonsh]

If you only need to receive BLE advertisements then you need to start a scan with sd_ble_gap_scan_start and wait for an BLE_GAP_EVT_ADV_REPORT. 

[Vinay Parashar]

Hi 

Can you share a test stub on how to implement  sd_ble_gap_scan_start. or refer to any example. 

As i have tried to implement sd_ble_gap_scan_start on ble_app_gatts example

got <error> app: Fatal error
<warning> app: System reset

Program control reaches to NRF_BREAKPOINT_COND; in app_weak_error.c file.