请教：自己做的c2812板子，连不上仿真器

错误提示如下：
Error connecting to the target:
Error 0x80000240/-291
Fatal Error during: Initialization, OCS,
This error was generated by TI\'s USCIF driver.

SC_ERR_TST_MEASURE <-291>
The built-in scan-path length measurement has failed. This indicates
that the JTAG controller cannot reliably communicate with
the target DSP\'s and micro-controllers at that frequency.
Try specifying the scan-path lengths in the board configuration
file because the built-in scan-path reliability tests cannot be
performed without knowledge of the scan-path length.


Sequence ID: 0
Error Code: -291
Error Class: 0x80000240

Board Name: F2812 XDS560 Emulator
Cpu Name: CPU_1

Abort:                Close Code Composer Studio.
Retry:                Try to connect to the target again.
Cancel:                Remain disconnected from the target
Diagnostic:        Run diagnostic utility.

谢谢！

楼上的用XDS560仿真器调试吗？一般不会出现这样的问题，建议先用标准的DSP板卡连接试试看。

[ 本贴由 edward 于 2008-2-25 11:42 AM 最后编辑 ]

我也有相同的问题，我的DSP上电后，jtag的tms脚的电平不正常，其他电平都正常，而且dsp的时钟输出也是正确的，我怀疑焊板子的时候这个引脚虚焊了不知楼主的怎么样？

这块就行了

又新焊了一块，这次jtag各引脚的上电电平完全正确，接仿真器也通了

我也遇到了相同的问题，仍未解决，请教高手

我也遇到这样的问题，望各位高手指点，联系QQ7112376