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CodeSkin工具C2prog烧写28069问题,求助求助~~~~~~~~~~~~~~



本人用CodeSkin工具C2prog烧写28069时,C2prog出现如下提示,如图1所示:

*** PLEASE RESET TARGET IN SCI BOOT-LOADER MODE ***
Connecting with target (autobaud)...  OK.
Bootloading...  OK.
Please wait...
Connecting with target...  failed (no response)!

出现问题后,用串口助手检查电脑是否连接上芯片,

串口助手发送41AA0800000000000000000000000000000000000000000800000000C011223344556677,

接收也是41AA0800000000000000000000000000000000000000000800000000C011223344556677。

如图2所示,补充一下,串口连线本人用的是USB转串口线,求助求助~~~~~~~~~~~~~~~~~~~~~谢谢!!!!!!!!!