我做了片系统板,供电用的是5v电压。但接入jlink编程后, 没几次就出问题了。jlink显示:
Device "NV32F100" selected.
Found SWD-DP with ID 0x0BC11477
AP-IDR: 0x04770031, Type: AHB-AP
AHB-AP ROM: 0xF0002000 (Base addr. of first ROM table)
Found SWD-DP with ID 0x0BC11477
AP-IDR: 0x04770031, Type: AHB-AP
AHB-AP ROM: 0xF0002000 (Base addr. of first ROM table)
DAP error while reading AIRCR / CPUID register
Erase Thread exited
Initialization of debug session failed.
Could not connect to target.
电压最高是5.2v,没有出现超压。外接也没有出现过流情况。每次都是工作正常。然后jlink编程几次后,再次上电,jlink就提示找不到设备。或者在上电后,第一次能找到ID,但写入失败。然后再次查找器件就找不到了。
大家有没有遇见过这种情况?
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