（4）按键修改时钟（按键中断学习）

.................................\beep.dep

.................................\beep.pdb

.................................\beep.stp

.................................\BEEP.stw

.................................\BEEP.wdb

.................................\BEEP.wed

.................................\beep_Programmer

.................................\checkres.spy

.................................\Debug

.................................\.....\beep.elf

.................................\.....\beep.lkf

.................................\.....\beep.map

.................................\.....\beep.s19

.................................\.....\beep.sm8

.................................\.....\main.ls

.................................\.....\main.o

.................................\.....\stm8s_beep.ls

.................................\.....\stm8s_beep.o

.................................\.....\stm8s_clk.ls

.................................\.....\stm8s_clk.o

.................................\.....\stm8s_exti.ls

.................................\.....\stm8s_exti.o

.................................\.....\stm8s_gpio.ls

.................................\.....\stm8s_gpio.o

.................................\.....\stm8_interrupt_vector.ls

.................................\.....\stm8_interrupt_vector.o

.................................\.....\XuanWeiStm8ProgmmerConfig.xml

.................................\.....\新建文件夹

.................................\main.c

.................................\Release

.................................\.......\beep.lkf

.................................\STM8S_StdPeriph_Driver

.................................\......................\inc

.................................\......................\...\stm8s.h

.................................\......................\...\stm8s_adc1.h

.................................\......................\...\stm8s_adc2.h

.................................\......................\...\stm8s_awu.h

.................................\......................\...\stm8s_beep.h

.................................\......................\...\stm8s_can.h

.................................\......................\...\stm8s_clk.h

.................................\......................\...\stm8s_conf.h

.................................\......................\...\stm8s_exti.h

.................................\......................\...\stm8s_flash.h

.................................\......................\...\stm8s_gpio.h

.................................\......................\...\stm8s_i2c.h

.................................\......................\...\stm8s_it.h

.................................\......................\...\stm8s_itc.h

.................................\......................\...\stm8s_iwdg.h

.................................\......................\...\stm8s_rst.h

.................................\......................\...\stm8s_spi.h

.................................\......................\...\stm8s_tim1.h

.................................\......................\...\stm8s_tim2.h

.................................\......................\...\stm8s_tim3.h

.................................\......................\...\stm8s_tim4.h

.................................\......................\...\stm8s_tim5.h

.................................\......................\...\stm8s_tim6.h

.................................\......................\...\stm8s_type.h

.................................\......................\...\stm8s_uart1.h

.................................\......................\...\stm8s_uart2.h

.................................\......................\...\stm8s_uart3.h

.................................\......................\...\stm8s_wwdg.h

.................................\......................\...\stm8_tsl_conf.h

.................................\......................\src

.................................\......................\...\stm8s_adc1.c

.................................\......................\...\stm8s_adc2.c

.................................\.............