Differences

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--- linux:bluetooth:bluez:btattach [2025/04/11 08:31] – niziak
+++ linux:bluetooth:bluez:btattach [2025/04/11 12:23] (current) – niziak
@@ Line 1: / Line 1: @@
 ====== btattach ======
+hci/btattach flow:
+  * bluez (bluetoothd service) is running
+  * ''hciattach''
+  * ''hci0'' interface appears
+  * bluez is configuring it
+    * NOTE: w/o blues try to call ''hciconfig hci0 up'' returns error: ''Can't init device hci0: Cannot assign requested address (99)''
+  * now possible put inteface up:
+    * ''hciconfig hci0 up'' or
+    * ''bluetoothctl -- power on''
+===== EUNATCH (Protocol driver not attached) =====
 Search tags:
@@ Line 54: / Line 66: @@
 write(1, "Device setup complete\n", 22Device setup complete) = 22
 </code>
+===== Headline =====
+It is not working since 2017 :(
+  * [[https://www.spinics.net/lists/linux-bluetooth/msg72050.html|btattach and 3wire doesn't work]]
+Issue was posted on mailing list but without any deep look from developer.
+Problem is not related to connected nrF52 device.
+It can be reproduced on any UART. Problem is during UART configuration before any data transmission!