RPi establish SCO connection with my headset and I can send SCO packets to it (with dragonboard I can not even send them), and actually here sound from headset. But I cannot read SCO packets from headset... though I can do it with external USB dongle.
And I experiences quite similar issue, that I fill here - https:/ /bugs.launchpad .net/snappy/ +bug/1679432
RPi establish SCO connection with my headset and I can send SCO packets to it (with dragonboard I can not even send them), and actually here sound from headset. But I cannot read SCO packets from headset... though I can do it with external USB dongle.
hciconfig shows:
$ hciconfig
hci0: Type: BR/EDR Bus: UART
BD Address: B8:27:EB:EF:57:6F ACL MTU: 1021:8 SCO MTU: 64:1
UP RUNNING
RX bytes:32155 acl:487 sco:0 events:740 errors:0
TX bytes:11882107 acl:392 sco:228259 commands:225 errors:0
sco RX counter is zero...