前几天遇到如下的一个问题，
开发板和软件怎么也连接不上。打开软件测试连接情况就出现下面的代码。
[Start: Texas Instruments XDS100v2 USB Emulator_0]
Execute the command:
%ccs_base%/common/uscif/dbgjtag -f %boarddatafile% -rv -o -F inform,logfile=yes -S pathlength -S integrity
[Result]
-----[Print the board config pathname(s)]------------------------------------
C:UsersADMINI~1AppDataLocalTEXASI~1
CCS
ti4 BrdDattestBoard.dat
-----[Print the reset-command software log-file]-----------------------------
This utility has selected a 100- or 510-class product.
This utility will load the adapter 'jioserdesu***.dll'.
An error occurred while soft opening the controller.
-----[An error has occurred and this utility has aborted]--------------------
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 be one or
more of: no XDS100 is plugged in, invalid XDS100 serial number,
blank XDS100 EEPROM, missing FTDI drivers, faulty USB cable.
Use the xds100serial command-line utility in the 'common/uscif'
folder to verify the XDS100 can be located.
[End: Texas Instruments XDS100v2 USB Emulator_0]
根据解释说明，造成的原因有XDS100未插入，无效的XDS100序列号，空的XDS100 EEPROM，缺少FTDI驱动，USB线损坏。这么多原因我看的也是醉了。通过排查发现，开发板一切正常，排除“无效的XDS100序列号，空的XDS100 EEPROM”;重新插拔并更换USB线，排除"XDS100未插入,USB线损坏"这两种原因.好吧，剩下的就是缺少FTDI驱动了。在设备管理器中发现驱动旁边有一个感叹号。感觉应该就是驱动安装不成功。
索性我干脆就把软件卸载了重新安装了一次，然而事实还是如此，驱动貌似还是没有安装成功。在网上各种找解释，发现有这样的一篇文章，我就按照他的试了一下。
http://e2e.ti.com/support/microcontrollers/c2000/f/171/t/311714
然而还是不行，我就很无奈了。再一次把软件卸载了，等待下一次安装。后来在网上看到，安装时不能开杀毒软件，如果有组件安装不了的情况，可以管理员运行。好吧，我再试了一次，惊喜！成功了！
[Start: Texas Instruments XDS100v2 USB Emulator_0]
Execute the command:
%ccs_base%/common/uscif/dbgjtag -f %boarddatafile% -rv -o -F inform,logfile=yes -S pathlength -S integrity
[Result]
-----[Print the board config pathname(s)]------------------------------------
C:UsersADMINI~1AppDataLocalTEXASI~1
CCSti4 BrdDattestBoard.dat
-----[Print the reset-command software log-file]-----------------------------
This utility has selected a 100- or 510-class product.
This utility will load the adapter 'jioserdesu***.dll'.
The library build date was 'Feb 13 2017'.
The library build time was '16:06:25'.
The library package version is '6.0.576.0'.
The library component version is '35.35.0.0'.
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.
-----[Print the reset-command hardware log-file]-----------------------------
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[0] pin.
The controller cannot monitor the value on the EMU[1] 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).
-----[The log-file for the JTAG TCLK output generated from the PLL]----------
There is no hardware for programming the JTAG TCLK frequency.
-----[Measure the source and frequency of the final JTAG TCLKR input]--------
There is no hardware for measuring the JTAG TCLK frequency.
-----[Perform the standard path-length test on the JTAG IR and DR]-----------
This path-length test uses blocks of 64 32-bit words.
The test for the JTAG IR instruction path-length succeeded.
The JTAG IR instruction path-length is 38 bits.
The test for the JTAG DR bypass path-length succeeded.
The JTAG DR bypass path-length is 1 bits.
-----[Perform the Integrity scan-test on the JTAG IR]------------------------
This test will use blocks of 64 32-bit words.
This test will be applied just once.
Do a test using 0xFFFFFFFF.
Scan tests: 1, skipped: 0, failed: 0
Do a test using 0x00000000.
Scan tests: 2, skipped: 0, failed: 0
Do a test using 0xFE03E0E2.
Scan tests: 3, skipped: 0, failed: 0
Do a test using 0x01FC1F1D.
Scan tests: 4, skipped: 0, failed: 0
Do a test using 0x5533CCAA.
Scan tests: 5, skipped: 0, failed: 0
Do a test using 0xAACC3355.
Scan tests: 6, skipped: 0, failed: 0
All of the values were scanned correctly.
The JTAG IR Integrity scan-test has succeeded.
-----[Perform the Integrity scan-test on the JTAG DR]------------------------
This test will use blocks of 64 32-bit words.
This test will be applied just once.
Do a test using 0xFFFFFFFF.
Scan tests: 1, skipped: 0, failed: 0
Do a test using 0x00000000.
Scan tests: 2, skipped: 0, failed: 0
Do a test using 0xFE03E0E2.
Scan tests: 3, skipped: 0, failed: 0
Do a test using 0x01FC1F1D.
Scan tests: 4, skipped: 0, failed: 0
Do a test using 0x5533CCAA.
Scan tests: 5, skipped: 0, failed: 0
Do a test using 0xAACC3355.
Scan tests: 6, skipped: 0, failed: 0
All of the values were scanned correctly.
The JTAG DR Integrity scan-test has succeeded.
[End: Texas Instruments XDS100v2 USB Emulator_0]
希望这个帖子对出现此问题的朋友有所帮助。不保证一定可以成功，但是值得一试！
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