我在从Arduino IDE上传闪烁草图时意外拔掉了NodeMCU，因为无法上传任何东西，而且我的NodeMCU内置LED在连接USB时仍保持打开状态。
我试图上传的代码只是内置LED的闪烁草图。尝试上传任何内容时会出现以下错误。
Sketch uses 247047 bytes (23%) of program storage space. Maximum is 1044464 bytes.
Global variables use 32852 bytes (40%) of dynamic memory, leaving 49068 bytes for local variables. Maximum is 81920 bytes.
error: failed sending 0xC0
error: failed sending 8 bytes
error: failed sending 36 bytes
error: failed sending 0xC0
error: failed sending 0xC0
error: failed sending 8 bytes
error: failed sending 36 bytes
error: failed sending 0xC0
error: failed sending 0xC0
error: failed sending 8 bytes
error: failed sending 36 bytes
error: failed sending 0xC0
error: failed sending 0xC0
error: failed sending 8 bytes
error: failed sending 36 bytes
error: failed sending 0xC0
error: failed sending 0xC0
error: failed sending 8 bytes
error: failed sending 36 bytes
error: failed sending 0xC0
error: failed sending 0xC0
error: failed sending 8 bytes
error: failed sending 36 bytes
error: failed sending 0xC0
error: failed sending 0xC0
error: failed sending 8 bytes
error: failed sending 36 bytes
error: failed sending 0xC0
error: failed sending 0xC0
error: failed sending 8 bytes
error: failed sending 36 bytes
error: failed sending 0xC0
error: failed sending 0xC0
error: failed sending 8 bytes
error: failed sending 36 bytes
error: failed sending 0xC0
warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed