ICD3 Target Device ID (00000000)

ICD3Err0086:  Target Device ID (00000000) does not match
expected Device ID (1f784000). If you experience persistent
problems communicating, the ICD 3 test interface can be

used to help diagnose the problem.

烧写线有问题，换了一5p的烧写线好了，整理半天。。