STM32 to do with the external keyboard interrupt, external interrupt lines 013 and 15, and the keyboard has a priority, features a more comprehensive

4.外部中断（按键控制LED）\Library\STM32F10xR.LIB
.........................\Project\JLinkLog.txt
.........................\.......\List\Project.map
.........................\.......\....\STM32F10x.lst
.........................\.......\Obj\delay.crf
.........................\.......\...\delay.d
.........................\.......\...\delay.o
.........................\.......\...\delay.__i
.........................\.......\...\ExtDll.iex
.........................\.......\...\exti_key.crf
.........................\.......\...\exti_key.d
.........................\.......\...\exti_key.o
.........................\.......\...\exti_key.__i
.........................\.......\...\key.crf
.........................\.......\...\key.d
.........................\.......\...\key.o
.........................\.......\...\key.__i
.........................\.......\...\led.crf
.........................\.......\...\led.d
.........................\.......\...\led.o
.........................\.......\...\led.__i
.........................\.......\...\main.crf
.........................\.......\...\main.d
.........................\.......\...\main.o
.........................\.......\...\main.__i
.........................\.......\...\Project.axf
.........................\.......\...\Project.hex
.........................\.......\...\Project.htm
.........................\.......\...\Project.lnp
.........................\.......\...\Project.plg
.........................\.......\...\Project.sct
.........................\.......\...\Project.tra
.........................\.......\...\STM3210E-EVAL.plg
.........................\.......\...\STM32F10x.o
.........................\.......\...\stm32f10x_it.crf
.........................\.......\...\stm32f10x_it.d
.........................\.......\...\stm32f10x_it.o
.........................\.......\...\stm32f10x_it.__i
.........................\.......\...\sys_config.crf
.........................\.......\...\sys_config.d
.........................\.......\...\sys_config.o
.........................\.......\...\sys_config.__i
.........................\.......\Project.Opt
.........................\.......\Project.Uv2
.........................\.......\Project_Opt.Bak
.........................\.......\Project_Target 1.dep
.........................\.......\Project_Uv2.Bak
.........................\.......\STM32F10x.s
.........................\User\Hardware\IWDG\iwdg.c
.........................\....\........\....\iwdg.h
.........................\....\........\KEY\exti_key.c
.........................\....\........\...\exti_key.h
.........................\....\........\...\key.c
.........................\....\........\...\key.h
.........................\....\........\LED\led.c
.........................\....\........\...\led.h
.........................\....\........\TIMERX\timerx.c
.........................\....\........\......\timerx.h
.........................\....\main.c
.........................\....\stm32f10x_conf.h
.........................\....\stm32f10x_it.c
.........................\....\stm32f10x_it.h
.........................\....\System\delay.c
.........................\....\......\delay.h
.........................\....\......\sys_config.c
.........................\....\......\sys_config.h
.........................\....\......\usart.c
.........................\....\......\usart.h
.........................\....\Hardware\IWDG
.........................\....\........\KEY
.........................\....\........\LED
.........................\....\........\TIMERX
.........................\Project\List
.........................\.......\Obj
.........................\User\Hardware
.........................\....\System
.........................\Library
.........................\Project
.........................\User
4.外部中断（按键控制LED）

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