Could not measure total IR len. TDO isdielectric constantt high

来源：蜘蛛抓取(WebSpider) 时间：2015-09-21 12:21 标签： newline in constant
用KEIL调试LM3S811开发板出现Could not measure total IR len.TDO is constant high,这是什么原因，怎么解
用KEIL调试LM3S811开发板出现Could not measure total IR len.TDO is constant high,这是什么原因，怎么解
KEIL 找不到芯片
首先，你的板子应该是USB来供电的，所以不会考虑电压大的问题，至于为什么会至于811来说最主要的是注意JTAG被锁。 有耳鸣的病人应到医院作详细检查
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jlink v8识别不了LPC2148
在线时间18 小时
威望410 分
芯币133 枚
TA的帖子TA的资源
一粒金砂（高级）, 积分 410, 距离下一级还需 90 积分
用jlink V8给目标板提供3.3V电压，就是把jlink 里面的跳线帽插到3.3V pin上然后连接 2148，一直这样提示，试了两个2148了，都是这样的提示我如果用目标板自己的电源，也是同样的提示Feature(s): RDI,FlashDL,FlashBP,JFlash,GDBFullVTarget = 3.300VInfo: Could not measure total IR len. TDO is constant high.Info: Could not measure total IR len. TDO is constant high.No devices found on JTAG chain. Trying to find device on SWD.No device found on SWD.Did not find any core.Info: Could not measure total IR len. TDO is constant high.Info: Could not measure total IR len. TDO is constant high.No devices found on JTAG chain. Trying to find device on SWD.No device found on SWD.Did not find any core.J-Link&stVTarget=3.306VITarget=0mATCK=1 TDI=0 TDO=1 TMS=0 TRES=0 TRST=1Supported JTAG speeds:- 48 MHz/n, (n&=4). =& 12000kHz, 9600kHz, 8000kHz, ...- Adaptive clockingJ-Link&hwinfoHWInfo[00] = Target power is disabledHWInfo[02] = 0mA& && &&&(ITarget)HWInfo[03] = 0mA& && &&&(ITargetPeak)HWInfo[04] = 0mA& && &&&(ITargetPeakOperation)HWInfo[10] = 0ms& && &&&(ITargetMaxTime0)HWInfo[11] = 0ms& && &&&(ITargetMaxTime1)HWInfo[12] = 0ms& && &&&(ITargetMaxTime2)J-Link&
jlink v8驱动用的是4.42a， 最新版的4.46 老是Request 1 bytes, received 0 bytes!!所以用回老的
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在线时间18 小时
威望410 分
芯币133 枚
TA的帖子TA的资源
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