Hi Leon, On Fri, Oct 2, 2015 at 9:33 AM, Leon Nicholls <lnicholls@xxxxxxxxxx> wrote: > Hi > I'm trying to write a value to a BLE thermal printer using the Web > Bluetooth API on ChromeOS (using Bluez 5.33). I can connect to the > device and find the service and characteristic. But when I try and > write to the characteristic an error is thrown (although it looks like > it disconnects before the write happens). Please find attached > log. > < ACL Data TX: Handle 32 flags 0x00 dlen 9 > [hci0] 18.030692 > ATT: Read Blob Request (0x0c) len 4 > Handle: 0x0003 > Offset: 0x0000 So this seems to be the last command in the sent but right after that we disconnect: > < HCI Command: Disconnect (0x01|0x0006) plen 3 > [hci0] 50.049295 > Handle: 32 > Reason: Remote User Terminated Connection (0x13) >> HCI Event: Command Status (0x0f) plen 4 [hci0] 50.050594 > Disconnect (0x01|0x0006) ncmd 1 > Status: Success (0x00) >> HCI Event: Vendor (0xff) plen 7 [hci0] 50.055689 > 82 70 90 80 10 36 59 .p...6Y >> HCI Event: Disconnect Complete (0x05) plen 4 [hci0] 50.056491 > Status: Success (0x00) > Handle: 32 > Reason: Connection Terminated By Local Host (0x16) > @ Device Disconnected: 0F:04:E0:51:44:8B (2) reason 2l I recall something similar was fixed in upstream so you might want to try with 5.35, this is probably caused by not registering any driver for the profile (see RegisterProfile:https://git.kernel.org/cgit/bluetooth/bluez.git/tree/doc/gatt-api.txt) which should be used if you want to auto connect as soon the device start advertising. -- Luiz Augusto von Dentz -- 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
