1前言
ulink版本升级。。
当使用keil4.7.4版本时，ulink固件库更新了、
2官方资料解释：
Boot Mode Utility
Home » Appendix » Utilities » Boot Mode Utility
This utility allows configuring the boot mode (CMSIS-DAP or ULINK) of ULINK2.
Starting with the ULINK2 firmware version 2.00, the default boot mode is CMSIS-DAP.
If ULINK2, with firmware 2.00, needs to be operated with MDK-ARM versions prior to 4.70, then ULINK2 needs to be configured to boot up in ULINK mode.
The utility, UL2_Configure.exe, is located in the folder ..\Keil\ARM\ULINK\Utilities.
Run the utility from the command line.
UL2_Configure.exe 〚SN〛{B0|B1}
Where
| SN | ULINK2 Serial Number, which can be found through the dialog Options for Target - Debug - Settings - Debug. See ULINK USB-JTAG/SW Adapter. Must be specified if more ULINK2 adapters are connected. Otherwise, the Serial Number is optional. |
| B0 | Switch to ULINK boot mode. |
| B1 | Switch to CMSIS-DAP boot mode. |
Examples
UL2_Configure B0
Boots the connected ULINK2 in ULINK firmware mode.
3：具体如图
