求助，关于用jlink v8转jtag刷机的问题！用过J-LINK的朋友请进来发表一下看法！

yas***

      在淘宝上买了个J-LINK v8的USB转JTAG的刷机线，在给wrt54g刷机时，老是识别不出CPU，换了很多brjtag的版本，新老版本都试过了，都无济于事！好像是J-LINK v8跟wrt54g的JTAG接口通信没链接上，请求各位老鸟帮忙看看，是何故？？？

C:\Jtag>brjtag -probeonly /cable:3
        ===============================================
         Broadcom EJTAG Debrick Utility v1.9m-hugebird
        ===============================================

  Open USB device: 0x1366:0101
  Vendor Name: [SEGGER]
  Produc Name: [J-Link]
  Serial No  : [000000123456]
Initializing J-Link HW Ver. 8.0
Set I/O speed to 3000 KHz
Detected target Vref = 0.0V
USB TAP device has been initialized. Please confirm VREF signal connected!
Press any key to continue... ONCE target board is powered on!
Jlink TLR reset error (3)
Jlink TLR reset error (-116)
Probing bus ... ====>usb write[16], usb read[7],(st=1)
====>v3 return state[-116],(0)

USB Port R/W error occur! Please reduce buffer size with /L5:1000 and try again.

C:\Jtag>brjtag -erase:nvram
        ===============================================
         Broadcom EJTAG Debrick Utility v1.9m-hugebird
        ===============================================
Probing bus ... Done
Detected IR Length is 1
CPU Chip ID: 11111111111111111111111111111111 (FFFFFFFF)
*** Unknown or NO CPU Chip ID Detected ***
*** Possible Causes:
    1) Router/Modem is not Connected.
    2) Router/Modem is not Powered On.
    3) Improper JTAG Cable.
    4) Unrecognized CPU Chip ID.

ccp***

LZ没有连接VREF 这个要接到3.3V

yas***

pin1的3.3V我接了啊

yas***

C:\Jtag>brjtag -probeonly /cable:3

        ===============================================
         Broadcom EJTAG Debrick Utility v1.9m-hugebird
        ===============================================


  Open USB device: 0x1366:0101
  Vendor Name: [SEGGER]
  Produc Name: [J-Link]
  Serial No  : [000000123456]

Initializing J-Link HW Ver. 8.0
Set I/O speed to 3000 KHz
Detected target Vref = 3.293V

USB TAP device has been initialized. Please confirm VREF signal connected!
Press any key to continue... ONCE target board is powered on!

Jlink TLR reset error (3)
Jlink TLR reset error (-116)
Probing bus ... ====>usb write[16], usb read[7],(st=1)
====>v3 return state[-116],(0)


USB Port R/W error occur! Please reduce buffer size with /L5:1000 and try again.

yas***

怎么老是看的人多，说的人少啊？？？难道都不懂？？？？？？？？？？？？？、

ston***

前些日子我有说过类似问题，需要接6条线：vcc，gnd，还有四条jtag通讯的。
jlink firmware 不要超过4.15版 还有接出来的线尽量短点。
都没有问题的情况下，开机一秒钟内probeonly应该能找到cpu，祝你好运！

tsb***

jlink V8应该指的是jlink arm吧，而wrt54g是mips的u，这个也能刷？？？？

flari***

7# tsb0574

可以的brjtag目前支持并口线，wiggler,usbasp,jlink,ft2232和stm32芯片仿真器。

bill***

求LZ的联系方式，我有点关于brjtag连接j-link的问题想请教

lmz***

楼主成功没得？jlink到底不可以刷wrt54g？
我也想买个，我是笔记本没得25针口

yas***

成功了，感觉比台式机的并口速度快很多！！

666***

能分享一下你的解决过程吗？

yas***

J-LINK的固件版本太高，后来换了个低版本的问题就解决了！

q74***

14# yashee


我也买了一个jlink，实在是不会用，蛋疼