Error connecting to the target:
(Error -1155 @ 0x0)
Device may be operating in low-power mode. The debugger has forced the device to wake up. Choose 'OK' to attempt to complete the debug connection.
(Emulation package 6.0.407.3)

可能是晶振问题

仿真器插的有问题。看你脚插对没？如果有防反插。检查你的JATG供电。