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您好,这个错误代码意思为硬件连接断开
1.检查自己的usb线是否有问题
2.在您这边烧录完成程序时,点击debug,是否去按开发板的reset按键,如果您这边操作这个按键了,串口会断开,就会报错。
这边建议在debug时不需要去操作reset按键,直接去单步运行断点调试就可以了。
希望以上回答可以帮助到您