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TMS320F28034: 利用C2prog通过SCI给TMS320F28034烧录程序,出现错误提示:Bootloading... failed (invalid echo)!

Part Number: TMS320F28034

我用的芯片的TMS320F28034,用C2prog软件通过SCI给它下载程序,点击下载后,在第二步出现错误:Bootloading...  failed (invalid echo)!如下图所示。

1. 通过上电观察DSP的SCI传输的数据,发现SCI在不断的上传数据;

2. 已经尝试把波特率改小,但是仍然是这样(参照的方法:zhuanlan.zhihu.com/.../495510788)。

请问我该怎么办呢?