在characteristic declaration, characteristic value,Client Characteristic Configuration 定义中,
1.Characteristic Declaration中指定GATT_PROP_READ| GATT_PROP_WRITE属性,同Characteristic Value定义中GATT_PERMIT_READ | GATT_PERMIT_WRITE有何区别?
2.Client Characteristic Configuration定义中如果指定Notification属性,和Characteristic Declaration中定义GATT_PROP_NOTIFY有何区别?