BTSession: Additional change to pretend LEGO EV3 with LEGO Hub

The previous commit tweaked the class IDs returned from the LEGO Hub as that of LEGO EV3. On top of that, it is required to tweak the class ID to search and discover for bluetooth.DeviceDiscoverer API. Also, add some more debug prints to track BT device discovery. Signed-off-by: Shin'ichiro Kawasaki <[email protected]>
kawasaki · Nov 21, 2021 · 3cf61a1 · 3cf61a1
1 parent 3ffbde3
commit 3cf61a1
Showing 1 changed file with 8 additions and 2 deletions.
diff --git a/pyscrlink/scratch_link.py b/pyscrlink/scratch_link.py
@@ -188,7 +188,13 @@ def __init__(self, session, major_device_class, minor_device_class):
             self.ping_time = None
 
         def discover(self):
-            discoverer = self.BTDiscoverer(self.major_device_class, self.minor_device_class)
+            major = self.major_device_class
+            minor = self.minor_device_class
+            if major == 8 and minor == 1:
+                logger.info(f"Search LEGO Hub instead of LEGO EV3")
+                minor = 4
+            logger.debug(f"BT discover: class={major}/{minor}")
+            discoverer = self.BTDiscoverer(major, minor)
             discoverer.find_devices(lookup_names=True)
             while self.session.status == self.session.DISCOVERY and not discoverer.done and not self.cancel_discovery:
                 readable = select.select([discoverer], [], [], 0.5)[0]
@@ -206,7 +212,7 @@ def discover(self):
         def run(self):
             while self.session.status != self.session.DONE:
 
-                logger.debug("loop in BT thread")
+                logger.debug(f"loop in BT thread: session status={self.session.status}")
                 current_time = int(round(time.time()))
 
                 if self.session.status == self.session.DISCOVERY and not self.cancel_discovery: