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DM642新做的板子,与CCS3.3连接不上

显示的错误信息如下:
 
Error connecting to the target: 
Error 0x80002240/-116 Fatal Error during: Initialization, OCS, Control,  
This error was generated by TI's USCIF driver.  
 
SC_ERR_CTL_TRASH <-116> 
A bad parameter value was detected within an internal data-structure of Unified-SCIF. 
The controller or Unified-SCIF may be in an invalid state.   
 
Sequence ID: 0 
Error Code: -116 
Error Class: 0x80002240