I want to make a indoor positioning system using bluetooth 4.0. so for this HOST should recieve the RSSI from the devices it is connected to(from RSSI to distance conversion formulae ,i will get distance of devices from the HOST). i have tried to get the rssi from the devices and acheived by using RF pipe addressing . each device communicate on different pipe with the host and send its RSSI ;now the problem is that only one device is communicating with host at one time , so the correct coordinate of the position i will recieve after all the device send their RSSi to the host(i.e Host takes a time to communicate with all devices and then get the RSSi from all the devices and convert it to the distances). So for this purpose i want to synchronize all devices communication with the host.. please help me.
also help me in synchronous device mode as explained in this link