bluepy.btle.btle异常：无法执行管理命令“scannend”

Question

回溯（最近一次呼叫）：

devices = scanner.scan(arg.timeout)
self._mgmtCmd(self._cmd()+"end")

Failed to execute mgmt cmd '%s'" % (cmd)) bluepy.btle.BTLEException: Failed to execute mgmt cmd 'scanend'

Answer 1

这里有一个“修复”，它似乎是后续调用“bluepyhelper”之间的竞争条件。。在

diff  git a/bluepy/btle.py b/bluepy/btle.py
index ec950e1..65e6a78 100755
 - a/bluepy/btle.py
+++ b/bluepy/btle.py
@@ -218,6 +218,7 @@ class BluepyHelper:
             self._helper.stdin.write("quit\n")
             self._helper.stdin.flush()
             self._helper.wait()
+            time.sleep(0.1)
             self._helper = None
         if self._stderr is not None:
             self._stderr.close()

https://github.com/IanHarvey/bluepy/issues/150