请教贵版大侠，LPC1225 用SWD方式下载不了程序

Build target 'Clin-EM-8IO'
linking...
Program Size: Code=10084 RO-data=208 RW-data=40 ZI-data=608  
FromELF: creating hex file...
".\Obj\Embest_LPC12XX.axf" - 0 Error(s), 0 Warning(s).
Load "C:\\Users\\Yang Qing\\Desktop\\8IO实验\\project\\Obj\\Embest_LPC12XX.AXF"

JLink info:
-----------
DLL: V4.11i, compiled Jan 28 2010 19:55:25
Firmware: J-Link ARM V8 compiled Nov 14 2012 22:34:52
Hardware: V8.00
S/N : 17935099
Feature(s) : RDI,FlashDL,FlashBP,JFlash
---
* JLink Info: Found SWD-DP with ID 0x0BB11477
* JLink Info:   FPUnit: 4 code (BP) slots and 0 literal slots
* JLink Info: Found SWD-DP with ID 0x0BB11477
* JLink Info:   FPUnit: 4 code (BP) slots and 0 literal slots
* JLink Info: Core did not halt after reset, trying to disable WDT.
* JLink Info: Core did not halt after reset, trying to disable WDT.
**JLink Warning: CPU did not halt after reset.
**JLink Warning: CPU did not halt after reset.
* JLink Info: Found SWD-DP with ID 0x0BB11477
* JLink Info: SYSRESETREQ has confused core. Trying to reconnect and use VECTRESET.
* JLink Info: Found SWD-DP with ID 0x0BB11477
**JLink Warning: Could not set S_RESET_ST
**JLink Warning: CPU did not halt after reset.
***JLink Error: CPU not halted
to J-Link via USB.

Target info:
------------
Device: Cortex-M0
VTarget = 3.332V
State of Pins:
TCK: 0, TDI: 0, TDO: 0, TMS: 1, TRES: 1, TRST: 1
Hardware-Breakpoints: 0
Software-Breakpoints: 2048
Watchpoints:          0
JTAG speed: 100 kHz
---
在网上查了十几个小时了，仍然无法解决。
SWD我用的是四根线，线路连接没有问题，烧程序的时候PIO0_12 引脚用一个0欧电阻接地，下载的时候会显示could not find supported CPU core on JTAG chain