public void GAPScanResponseEvent(object sender, BlueGecko.BLE.Events.LEGAP.ScanResponseEventArgs e)
{
String log = String.Format("ble_evt_gap_scan_response:" + Environment.NewLine + "\trssi={0}, packet_type={1}, bd_addr=[ {2}], address_type={3}, bonding={4}, data=[ {5}]" + Environment.NewLine,
(SByte)e.rssi,
(SByte)e.packet_type,
ByteArrayToHexString(e.address),
(SByte)e.address_type,
(SByte)e.bonding,
ByteArrayToHexString(e.data)
);
Console.Write(log);
ThreadSafeDelegate(delegate { txtLog.AppendText(log); });
}
// for master/scanner devices, the "gap_scan_response" event is a common entry-like point
// this filters adv packets to find devices which advertise the Health Thermometer service
public void GAPScanResponseEvent(object sender, BlueGecko.BLE.Events.LEGAP.ScanResponseEventArgs e)
{
Byte[] cmd;
String log = String.Format("ble_evt_gap_scan_response: rssi={0}, packet_type={1}, address=[ {2}], address_type={3}, bonding={4}, data=[ {5}]" + Environment.NewLine,
(SByte)e.rssi,
e.packet_type,
ByteArrayToHexString(e.address),
e.address_type,
e.bonding,
ByteArrayToHexString(e.data)
);
Console.Write(log);
ThreadSafeDelegate(delegate { txtLog.AppendText(log); });
// pull all advertised service info from adv packet
List <Byte[]> ad_services = new List <Byte[]>();
Byte[] this_field = {};
int bytes_left = 0;
int field_offset = 0;
for (int i = 0; i < e.data.Length; i++)
{
if (bytes_left == 0)
{
bytes_left = e.data[i];
this_field = new Byte[e.data[i]];
field_offset = i + 1;
}
else
{
this_field[i - field_offset] = e.data[i];
bytes_left--;
if (bytes_left == 0)
{
if (this_field[0] == 0x02 || this_field[0] == 0x03)
{
// partial or complete list of 16-bit UUIDs
ad_services.Add(this_field.Skip(1).Take(2).Reverse().ToArray());
}
else if (this_field[0] == 0x04 || this_field[0] == 0x05)
{
// partial or complete list of 32-bit UUIDs
ad_services.Add(this_field.Skip(1).Take(4).Reverse().ToArray());
}
else if (this_field[0] == 0x06 || this_field[0] == 0x07)
{
// partial or complete list of 128-bit UUIDs
ad_services.Add(this_field.Skip(1).Take(16).Reverse().ToArray());
}
}
}
}
// check for 0x1809 (official health thermometer service UUID)
if (ad_services.Any(a => a.SequenceEqual(new Byte[] { 0x18, 0x09 })))
{
Console.Write("Found service! Attempting to connect." + Environment.NewLine);
// Stop scanning
cmd = bglib.BLECommandLEGAPEndProcedure();
bglib.SendCommand(serialAPI, cmd);
#if SERIAL_DEBUG
// DEBUG: display bytes written
log = String.Format("=> TX ({0}) [ {1}]", cmd.Length, ByteArrayToHexString(cmd)) + Environment.NewLine;
Console.Write(log);
ThreadSafeDelegate(delegate { txtLog.AppendText(log); });
#endif
/* We are going to connect in the response handler for le_gap_end_procedure because
* le_gap_procedure will also cancel the connect request if called too early! */
target_device_address = e.address;
target_device_address_type = e.address_type;
app_state = STATE_SCAN_END_REQUEST;
}
}
