新版CMSIS软件包的函数__set_CONTROL内部将全部加入 __ISB();

eric2013

https://github.com/ARM-software/ ... /CMSIS/Core/Include

1. /**
   
2.   \brief   Set Control Register
   
3.   \details Writes the given value to the Control Register.
   
4.   \param [in]    control  Control Register value to set
   
5. */
   
6. __STATIC_INLINE void __set_CONTROL(uint32_t control)
   
7. {
   
8.   register uint32_t __regControl         __ASM("control");
   
9.   __regControl = control;
   
10.   __ISB();
    
11. }

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eric2013