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CC2540不能下载程序

Other Parts Discussed in Thread: CC2540, CC2511

有块CC2540的板子不能下载程序,我只接了P2.1,P2.2,RST和VCC,GND。CC-DEBUGER的pin2和pin9也连接上了。

板子是别人做的,我引出了这几个管脚,IAR却提示无法识别target

有大神指知道怎么回事吗?会不会加密后不可以再灌程序了?

谢谢!