Hi,
I am trying to connect to a device while service discovery for another device is running, this is needed to go through connecting multiple devices as fast as possible.
my structure:
multiple peripherals advertising simultaniously.
Central is scanning until it finds a device it wants to connect to, then stops scanning and connects.
at the end of the connection event, scanning is re-enabled and the service discovery starts.
when another device of interest appears, i want to connect to it, even if the service discovery of the first device is still running.
My Problem now is, that when i do ble.connect(...) i get an "BLE_ERROR_UNSPECIFIED" response and the device doesnt get connected.
why does this happen and how can i prevent this? my goal is to connect to devices as fast as possible.
my log:
RTT LOADED| Hello, this is wt-ftbc-1809001 | ftbcCmd=ftReady[SerialEvent] name: ftbcCmd | value: ftReady FT100 signals readiness start scanning BLE_SUCCESS BLE_SUCCESS new device ad received string format: hex wt-bbox-181028's mac address: 93E21FE9B8E0 device: wt-bbox-181028 looking for: wt-bbox- stop scanning BLE_SUCCESS macAuth[93E21FE9B8E0]=ok[SerialEvent] name: macAuth[93E21FE9B8E0] | value: ok store MAC address vector stored look for best rssi push mac to desiredPeerAddr 93 - E2 - 1F - E9 - B8 - E0 - trying to connect to 93E21FE9B8E0BLE_SUCCESS <------------------ this is the first device I want to connect to maxValue: -56 from device: 0 BLE_SUCCESS thisBLE_SUCCESS connection Callback connection handle: 0 string format: hex Ft100_BLE's role in this connection: Central SUCCESS: wt-bbox-181028 connected with mac Address: 93E21FE9B8E0 <------------------ I am connected to the first device start scanning <------------------ scanning gets re-enabled BLE_SUCCESS TIMESTAMP BEGIN Generic Access Service found: Service UUID: [1800] attrs[1 9] TIMESTAMP END new device ad received string format: hex wt-bbox-181028's mac address: 591074700DE1 <------------------ scanner found my second device device: wt-bbox-181028 looking for: wt-bbox- stop scanning BLE_SUCCESS TIMESTAMP BEGIN Generic Attribute Service found: Service UUID: [1801] attrs[10 13] TIMESTAMP END TIMESTAMP BEGIN Device Information Service found: Service UUID: [180A] attrs[14 26] TIMESTAMP END macAuth[591074700DE1]=ok[SerialEvent] name: macAuth[591074700DE1] | value: ok <------------------ I allow this mac to connect store MAC address vector stored look for best rssi push mac to desiredPeerAddr 59 - 10 - 74 - 70 - 0D - E1 - trying to connect to 591074700DE1BLE_ERROR_UNSPECIFIED <------------------ THIS IS THE FAILING PART! maxValue: -48 from device: 0 BLE_SUCCESS thisBLE_SUCCESS DIS SN Char CHAR UUID: [2A25] DIS HW Char CHAR UUID: [2A27] DIS FW Char CHAR UUID: [2A26] DIS SW Char CHAR UUID: [2A28] TIMESTAMP BEGIN PLOWDATA Service found: Service UUID: [A001] attrs[27 30] TIMESTAMP END PLOWDATA Char CHAR UUID: [A002] TIMESTAMP BEGIN Service UUID: [C001] attrs[31 65535] TIMESTAMP END MAINTENANCE Char CHAR UUID: [C002] terminated Service Discovery for handle 0 hrm Char found with notifications enabled start looking for Descriptors now descriptor found with: connection_handle[0] UUID[2902] attribute_Handle[30] gattClient [536890060] descriptorDiscovery terminated without errors sending notification request now.. cccd state [1] sent successfully! _________________________________________ rbl updates received: connHandle: 0, attrHandle: 29, Type: 1, length: 4plow updates received identifier: [101] _________________________________________ ------------- disconnected from connection nr. 0 disconnect reason: DISCONNECT_REASON_UNDEFINED -------------
Ps. i noticed, that if a peripheral looses power as soon as it wanted to connect, the central wont do anything(I assumed the SupervisionTimeout would kick in) and if i want to restart scanning i get an "PARAM_OUT_OF_RANGE" Error.
thanks in advance,
Jonas
