芯片：stm32f103c8t6，用的淘宝买的STLINK V2 U盘类型的烧录仿真器。IAR开发环境，SWD方式连接，只接了三根线，swclk,swdio,gnd,外接电源，驱动什么的都正常，debug里面也选择了swd方式，新建了一个项目，编译正常，就是连接提示Fatal error: Failed to read CPUID for Cortex device Session aborted! 完整提示：
Sat Jun 03, 2017 10:33:10: Loaded macro file: C:\Program Files (x86)\IAR Systems\Embedded Workbench 7.0\arm\config\debugger\ST\STM32F1xx_XL.dmac
Sat Jun 03, 2017 10:33:10: Connected to ST-Link/V2 Firmware V2.J21.S4 (Probe no: 61395871)
Sat Jun 03, 2017 10:33:10: Selecting SWD as current target interface.
Sat Jun 03, 2017 10:33:10: Hardware reset with strategy 0 was performed
Sat Jun 03, 2017 10:33:10: Initial reset was performed
Sat Jun 03, 2017 10:33:12: Fatal error: Failed to read CPUID for Cortex device Session aborted!
有遇到的么？来点提示
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