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LAUNCHPAD烧写不了程序,甚至不能格式化

Other Parts Discussed in Thread: CC3200

以前用的好好的,忽然就连接不了芯片了,也不能接调试,格式化也不能进行。检查过跳线帽设置正常,但就是无法下载或调试,之前烧入代码也不能执行。求大神解答小弟的疑惑。

格式化过程出现以下提示

FATAL: --- Can't connect to device !! ---
 FATAL: Error connecting to the device. Please check your COM port settings. Error code: -3

debug出现如下提示

Cortex_M4_0: Error connecting to the target