D:\development_tools\keil_v5\ARM\PACK\ARM\CMSIS\5.0.1\CMSIS\Include\cmsis_armcc.h(30): error: #35: #error directive: "Please use ARM Compiler Toolchain V4.0.677 or later!"
#error "Please use ARM Compiler Toolchain V4.0.677 or later!"
想调个pid,但编译别人工程时一直报错,有大 佬会不