Advertise and scan simultaneously

Hi Saleem,

Yes this would be possible by doing a scan request and capture the required data from the advertisement. Subsequently you can advertise yourself using this data. So it can be done however you cannot connect as you are more or less a one-way repeater.

Best regards, RvA

Hello saleem145,

you can't advertise and scan at the same time, but, as far as I know, what you can do is toggle between advertising and scanning modes. You can useGAPM_SCAN_PASSIVEandGAPM_ADV_NON_CONN. You can, e.g., append manufacturer specific data to your ADV packet. I have found that it is easier to form a structure for appending the data to the packet:

#define MS_DATA_SIZE 4
struct __attribute__((packed)) manufacturer_specific_data_s
{
uint8_t length;
const uint8_t type;
const uint16_t company_identifier;
uint8_t data[MS_DATA_SIZE];
};


Then you create instance from the structure

struct manufacturer_specific_data_s ms_data =
{
1 + 2 + MS_DATA_SIZE, // Size = type + company_identifier + MS_DATA_SIZE
GAP_AD_TYPE_MANU_SPECIFIC_DATA,
0x00d2, // Company identifier for Dialog
{0x01, 0x02, 0x03, 0x04} // Some data, length is MS_DATA_SIZE
}


Then you can finally append it to the adv packet inapp_adv_funcfunction:

cmd->info.host.adv_data_len = sizeof(struct manufacturer_specific_data_s);
memcpy(&cmd->info.host.adv_data[0], &ms_data, cmd->info.host.adv_data_len);


Don't exceed the allowed adv packet size

PS. I didn't test it, so there might be errors!
PSS. You need to pack the struct with __attribute__((packed)) attribute to prevent additional padding in the structure.