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Each mesh node will expose a Mesh Provisioning Service with a Data In and Data Out characteristic. The provisioner will then connect to the unprovision device over a typical Bluetooth LE connection and begin the Proxy Protocol by using the exposed characteristics for communication.(来自TI Bluetooth Mesh Provisioning例子)
我这里需要开发APP，请问有Data In and Data Out characteristic相关的参考资料吗？交互方式是什么。
