Sending raw data using EasyBT module RBT 001

[barjaktar]

Hello.

I am working on project where I am trying to achieve communication between a microcontroler and some other device, via RBT 001 module. I was able to establish connection to devices that have RFCOMM protocol implemented using standard commands in command mode of the module.

Now I would like to communicate with a device that works on L2CAP layer of Bluetooth stack. I cannot use ESTABLISH_LINK command, because it requires RFCOMM port of the remote device, which does not exist on the remote device in this case. RBT-001 does not have L2CAP commands implemented, so my idea was to send raw data, and thus make the other device answer me. I used hcidump (software for linux) to get all the raw data that is exchanged between a PC and this other device I want to communicate with. According to that dump, first message sent from PC is HCI_Inquiry. Since RBT 001 does not have a special command for this, I tried sending these bytes using SPP_SEND_DATA command. CFM packet that I get tells me that it wasn't able to send data because there was no connection. This is very strange since this command was meant for sending data on a connectionless link...

Is it even possible to send raw data using RBT 001? Is it possible to communicate on L2CAP level in this way? Or in any way?

Thank you.