Hi Matthias, On Thu, Feb 25, 2016, Matthias Schmidt wrote: > I’m trying with a Nexus 4 ( Android 5.1.1 ) Phone using Bluepixel’s > BLEScanner to browse the Services/Charateristics provided by Bluez > 5.37 / ARM and > our own Python/DBUS Code. > > Alas, i don’t get any information displayed. > > Two things which pop into my eyes while reading throug the dump are: > > a) A connect request using the PSM(1) of SDP get’s turned down: SDP is a BR/EDR protocol. It doesn't exist for LE (which I assume you're using since you say you use something called BLEScanner). So that's why you get PSM not supported. > b) The Nexus refuses to raise the MTU to 517: > > < ACL data: handle 1 flags 0x00 dlen 7 > L2CAP(d): cid 0x0042 len 3 [psm 31] > ATT: MTU req (0x02) > client rx mtu 517 > > ACL data: handle 1 flags 0x02 dlen 9 > L2CAP(d): cid 0x0040 len 5 [psm 31] > ATT: Error (0x01) > Error: Request not supported (6) > MTU req (0x02) on handle 0x0000 > > According to my interpretation of the spec this could happen and > should not cause the connection to fail. How is it failing? A disconnection isn't necessarily a failure - it could just be a timeout happening. Johan -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
