How to get advertising data and scan response data during device discovery

Hey Dhvanil,

Looking at simpleBLECentral as a sample project to start from. When you receive an advertisment packet or a scan response that will produce a GAP_DEVICE_INFO_EVENT which will be processed within simpleBLECentralEventCB(). The argument that is passed, pEvent, is an enum so it has the type of gapDeviceInfoEvent_t for GAP_DEVICE_INFO_EVENTs. Within that struct is an array pointer pEvtData which will be a pointer to the scan response data or adv data. The var dataLen will give you the total length of the data that pEvtData is pointing to.

-Matt

Hey Dhvanil,

What are you running on your peripheral devices? SimpleBLEPeripheral?

Within the "case GAP_DEVICE_INFO_EVENT:" are you checking the packets outside of the UUID check? If not and you are running the SimpleBLEPeriphal projects on your periphal then that is why you are only seeing the advertising packets (it's filtering through the adv data for the SIMPLEPROFILE_SERV_UUID). Try putting a check in that case statement for

if(pEvent->deviceInfo.eventType == GAP_ADRPT_SCAN_RSP){

blink an LED or something;

}

outside of the check for DEFAULT_DEV_DISC_BY_SVC_UUID. If you get a scan rsp passed to the application task it will for sure enter the if segment.

I would keep the max scan response as default. You may run into issues with trying to allocate enough memory to handle the large amounts of responses. If you look into GAP_DeviceInit(), there is a call to GAP_CentDevMgrInit() which allocates memory for scan responses. It might be worth checking the return value to make sure it is a success if you need to handle a greater amount of scan responses than default.

One last thing I would look into would be the return value of GapCentralRole_StartDevice(). Make sure it is returning  success (in the stock code there is no error check).
 
-Matt