**JLink Warning: CPU did not halt after bootloader.的问题
请教高手，先用一款LPC1754开发程序，用keil uV4开发环境，JLink V8仿真器，最近几次下载程序，总不成功，速率降低也不行，Flash编程时间设的长一点还是不行（设了3000ms）。下面是提示信息，请高手给分析下从哪方面查起。=======================================================
Load "D:\\fl-thc\\trunk\\tests\\TestDragon\\TestDragon.AXF"
* JLink Info: Device "LPC1754" selected (128 KB flash, 16 KB RAM).
Set JLink Project File to "D:\fl-thc\trunk\tests\TestDragon\JLinkSettings.ini"
JLink info:
------------
DLL: V4.36l, compiled Dec2 2011 18:52:36
Firmware: J-Link ARM V8 compiled Sep 22 2011 16:23:23
Hardware: V8.00
S/N : 20100214
Feature(s) : RDI,FlashDL,FlashBP,JFlash,GDBFull
* JLink Info: Found SWD-DP with ID 0x2BA01477
* JLink Info: TPIU fitted.
* JLink Info: ETM fitted.
* JLink Info: FPUnit: 6 code (BP) slots and 2 literal slots
* JLink Info: Found Cortex-M3 r2p0, Little endian.
ROMTableAddr = 0xE00FF003
* JLink Info: Found SWD-DP with ID 0x2BA01477
* JLink Info: TPIU fitted.
* JLink Info: ETM fitted.
* JLink Info: FPUnit: 6 code (BP) slots and 2 literal slots
* JLink Info: Found Cortex-M3 r2p0, Little endian.
**JLink Warning: CPU did not halt after bootloader.
**JLink Warning: CPU did not halt after bootloader.
Target info:
------------
Device: LPC1754
VTarget = 3.300V
State of Pins:
TCK: 0, TDI: 1, TDO: 0, TMS: 0, TRES: 1, TRST: 1
Hardware-Breakpoints: 6
Software-Breakpoints: 8192
Watchpoints: 4
JTAG speed: 100 kHz
Erase Done.
Programming Failed!
=========================================================
速度设为SW 2MHz时，Erase都不成功，降为100kHz，Jtag可以Erase，编程还是不成功，降到10Khz,可以编程，Verify又不成功，请问从哪里查起呢？不胜感激！ 已找到问题原因，由于电路设计失误，P2.10这个管脚上电后是低电平，导致CPU进入ISP编程模式，不能正常进入用户程序。修改电路后问题解决。深层次原因还有待分析。 楼主好样的，我今天也遇到同样的问题，不一样的我是用lpc1788,开发板上面把isp p2.10短到地了
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