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烧写后按BTN-1打印信息如下：
以下是官方文档的打印信息，和官方文档的不一致。
建议您使用官方推荐的串口调试工具试试：PuTTY 或者 Tera term
Susan Yang您好！十分感谢您的回复和帮助，用PuTTY可以正常显示字符了，谢谢！
很高兴您能解决问题
