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烧写过程中，总是会提示Bootloading... failed (invalid echo)! GPIO34已拉高。TRST脚跟TDO脚已拉低。附图如下：
您好，是否有参考帖子给出的步骤：http://www.deyisupport.com/question_answer/microcontrollers/c2000/f/56/t/9864.aspx
应该是端口直接没通
最后一幅图片是什么？
