我用kill4给板子烧写程序的时候出现以下问题，同一块板子，第一次成功了，第二次就变这样，其它板子也一样

[winicker]

我不是专业人士，请不要用你们的专业术语告诉我将boot0拉高什么的，我根本不懂，求实际解决问题

Load "C:\\Users\\Administrator\\Desktop\\固件源代码\\output\\usb_reader.AXF"
Set JLink Project File to "C:\Users\Administrator\Desktop\固件源代码\JLinkSettings.ini"

JLink info:
------------
DLL: V4.15n, compiled Jun 18 2010 19:55:09
Firmware: J-Link V9 compiled Dec 1 2014 10:31:00
Hardware: V9.00
Feature(s) : GDB, RDI, FlashBP, FlashDL, JFlash

**JLink Warning: No matching core found.
* JLink Info: SYSRESETREQ has confused core. Trying to reconnect and use VECTRESET.
**JLink Warning: Failed to reset CPU. VECTRESET has confused core.
**JLink Warning: CPU did not halt after reset.
* JLink Info: Core did not halt after reset, trying to disable WDT.
**JLink Warning: CPU did not halt after reset.
* JLink Info: Core did not halt after reset, trying to disable WDT.
**JLink Warning: CPU did not halt after reset.
**JLink Warning: Could not set S_RESET_ST
* JLink Info: SYSRESETREQ has confused core. Trying to reconnect and use VECTRESET.
**JLink Warning: Failed to reset CPU. VECTRESET has confused core.
**JLink Warning: CPU did not halt after reset.
* JLink Info: Core did not halt after reset, trying to disable WDT.
**JLink Warning: CPU did not halt after reset.
* JLink Info: Core did not halt after reset, trying to disable WDT.
**JLink Warning: CPU did not halt after reset.
**JLink Warning: Could not set S_RESET_ST
***JLink Error: Supply voltage too low (1 Volt is required, Measured: 0.6 Volt).
Please check target power.
CPU not halted

接着就出现

[worldy]

连接不可靠？ 重新物理连接、烧写试试

[winicker]

已经重复链接烧写了很多次，都是这样

[mangoalx]

有一种可能是程序里复用了JTAG接口I/O，所以有程序运行以后JTAG就连接不上了？问问软件设计者 可以尝试解锁操作，这和你具体用的芯片有关

[__怪__]

下程序的时候按下复位试试看，可以的话就是楼上所说服用了JTAG的IO