求教关于 ble 问题

[vosb]

我用 gatttool 读取一个蓝牙温度传感器的值，可是怎么都不成功，

handle: 0x000d, char properties: 0x10, char value handle: 0x000e, uuid: 226caa55-6476-4566-7562-66734470666d

properties 明明是 notify,却。。。

root@raspberrypi:/home/pi# gatttool -b 4C:65:A8:D0:96:A0 --char-write-req --handle=0x00f --value=0100 --listen Characteristic Write Request failed: Attribute can't be written

求指教~~~~