DSP28335仿真遇到问题，JTAG断开了。
C28xx: Error: (Error -1041 @ 0xFFFFFF6A) The emulator reported an error. Confirm emulator configuration and connections, reset the emulator, and retry the operation. (Emulation package 5.0.681.0)这是什么原因啊？我有两块一样的板子，在一个板子上运行正常，另一个板子运行不正常。而且只有在含有PWM程序时运行不正常，我运行自带的toggle和ADC采样，都可行。求大神帮助。 The value is '-154' (0xffffff66).
The title is 'SC_ERR_FTDI_WRITE'.
The explanation is:
One of the FTDI driver functions used to
write data returned bad status or an error.
Execute the command:
%ccs_base%/common/uscif/dbgjtag -f %boarddatafile% -rv -o -F inform,logfile=yes -S pathlength -S integrity
-----------------------------------------
C:\Users\gexiao\AppData\Local\.TI\431545181\
0\0\BrdDat\testBoard.dat
----------------------------------
This utility has selected a 100- or 510-class product.
This utility will load the adapter 'jioserdesusbv3.dll'.
The library build date was 'Apr2 2012'.
The library build time was '21:41:04'.
The library package version is '5.0.681.0'.
The library component version is '35.34.39.0'.
The controller does not use a programmable FPGA.
The controller has a version number of '4' (0x00000004).
The controller has an insertion length of '0' (0x00000000).
This utility will attempt to reset the controller.
This utility has successfully reset the controller.
----------------------------------
The scan-path will be reset by toggling the JTAG TRST signal.
The controller is the FTDI FT2232 with USB interface.
The link from controller to target is direct (without cable).
The software is configured for FTDI FT2232 features.
The controller cannot monitor the value on the EMU pin.
The controller cannot monitor the value on the EMU pin.
The controller cannot control the timing on output pins.
The controller cannot control the timing on input pins.
The scan-path link-delay has been set to exactly '0' (0x0000).
An error occurred while hard opening the controller.
-------------------------
This error is generated by TI's USCIF driver or utilities.
The value is '-154' (0xffffff66).
The title is 'SC_ERR_FTDI_WRITE'.
The explanation is:
One of the FTDI driver functions used to
write data returned bad status or an error.
Execute the command:
%ccs_base%/common/uscif/dbgjtag -f %boarddatafile% -rv -o -F inform,logfile=yes -S pathlength -S integrity
-----------------------------------------
C:\Users\gexiao\AppData\Local\.TI\431545181\
0\0\BrdDat\testBoard.dat
----------------------------------
This utility has selected a 100- or 510-class product.
This utility will load the adapter 'jioserdesusbv3.dll'.
An error occurred while soft opening the controller.
-------------------------
This error is generated by TI's USCIF driver or utilities.
The value is '-151' (0xffffff69).
The title is 'SC_ERR_FTDI_OPEN'.
The explanation is:
One of the FTDI driver functions used during
the connect returned bad status or an error.
The cause may one or more of: invalid emulator serial number,
blank emulator EEPROM, missing FTDI drivers, faulty USB cable.
Use the xds100serial command-line utility in the 'common/uscif'
folder to verify the emulator can be located.
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