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调用discoveryCharacteristics没有触发onDiscoveryCharacteristics

qian lu
Prodigy 20 points
Other Parts Discussed in Thread: CC2540

你好，我用CC2540的SimpleBLEPeripheral，

手机用的是三星GS3 mini，操作系统是android4.1.2，在connectLEDevice成功后，会触发onConnectLEDevice事件，

在connectLEDevice成功后再调用discoveryCharacteristics，但是没有触发onDiscoveryCharacteristics事件，请问是什么原因呢？