Turn off remote wakeup in USB configuration descriptor

adafruit · Mar 31, 2021 · 9cc02fe · 9cc02fe
1 parent 7471e97
commit 9cc02fe
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Showing 2 changed files with 6 additions and 1 deletion.
diff --git a/ports/raspberrypi/sdk b/ports/raspberrypi/sdk
diff --git a/tools/gen_usb_descriptor.py b/tools/gen_usb_descriptor.py
@@ -612,6 +612,11 @@ def make_cdc_iad(cdc_comm_interface, name):
         standard.ConfigurationDescriptor.bLength + sum([len(bytes(x)) for x in descriptor_list])
     ),
     bNumInterfaces=len(interfaces),
+    # bus powered (bit 6), remote wakeup (bit 5),
+    # bit 7 is always 1 and 0-4 are always 0
+    # Turn off remote wakeup until we handle it in CircuitPython.
+    bmAttributes=0x80,
+
 )
 descriptor_list.insert(0, configuration)