我用jlink v8连接不上TQ2440,不知道什么原因?
我是用的jlink V8,转接板就是用的jtag上的那个接口。打开jlink commander显示信息为:SEGGER J-Link Commander V4.08i ('?' for help)
Compiled Jul 31 2009 18:24:44
DLL version V4.08i, compiled Jul 31 2009 18:23:57
Firmware: J-Link ARM V8 compiled Dec1 2009 11:42:48
Hardware: V8.00
S/N : 20100214
Feature(s) : RDI,FlashDL,FlashBP,JFlash,GDBFull
VTarget = 3.313V
Info: TotalIRLen = ?, IRPrint = 0x..FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF1
WARNING: No matching core found. Selecting default core (ARM7).
Info: TotalIRLen = ?, IRPrint = 0x..FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF1
****** Error: Could not find supported CPU core on JTAG chain
No devices found on JTAG chain. Trying to find device on SWD.
WARNING: No matching core found. Selecting default core (Cortex-M3).
****** Error: Parity error (Data = 0xFFFFFFFF, ReceivedParity = 1)
No device found on SWD.
Cortex-M3 identified.
JTAG speed: 5 kHz
之前突然连上了,之后有不行了
怎么解决,麻烦各位指点指点 灯还亮么? 绿灯一直亮起的 我碰到过和你一样的问题,解决方法是——关掉开发板电源,把转接板上3.3V IN和3.3V OUT用跳线帽短接,另外一边的跳线帽拔掉,重开电源再试一下,应该就好了。 哦 我没有用转接板 是用的天嵌jtag带的jlink接口
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