Realize the idea of ​ ​ using the state machine matrix keyboard scanning, do not use delay, reducing the burden on the CPU running

用状态机实现矩阵键盘\Core\core_cm3.c
....................\....\core_cm3.h
....................\....\system_stm32f10x.c
....................\....\system_stm32f10x.h
....................\Hard_Config\KEY\key.c
....................\...........\...\key.h
....................\...........\LED\led.c
....................\...........\...\led.h
....................\Result\core_cm3.crf
....................\......\core_cm3.d
....................\......\core_cm3.o
....................\......\delay.crf
....................\......\delay.d
....................\......\delay.o
....................\......\ExtDll.iex
....................\......\key.crf
....................\......\key.d
....................\......\key.o
....................\......\key.__i
....................\......\led.crf
....................\......\led.d
....................\......\led.o
....................\......\main.crf
....................\......\main.d
....................\......\main.o
....................\......\misc.crf
....................\......\misc.d
....................\......\misc.o
....................\......\startup_stm32f10x_hd.o
....................\......\stm32f10x_adc.crf
....................\......\stm32f10x_adc.d
....................\......\stm32f10x_adc.o
....................\......\stm32f10x_bkp.crf
....................\......\stm32f10x_bkp.d
....................\......\stm32f10x_bkp.o
....................\......\stm32f10x_can.crf
....................\......\stm32f10x_can.d
....................\......\stm32f10x_can.o
....................\......\stm32f10x_cec.crf
....................\......\stm32f10x_cec.d
....................\......\stm32f10x_cec.o
....................\......\stm32f10x_crc.crf
....................\......\stm32f10x_crc.d
....................\......\stm32f10x_crc.o
....................\......\stm32f10x_dac.crf
....................\......\stm32f10x_dac.d
....................\......\stm32f10x_dac.o
....................\......\stm32f10x_dbgmcu.crf
....................\......\stm32f10x_dbgmcu.d
....................\......\stm32f10x_dbgmcu.o
....................\......\stm32f10x_dma.crf
....................\......\stm32f10x_dma.d
....................\......\stm32f10x_dma.o
....................\......\stm32f10x_exti.crf
....................\......\stm32f10x_exti.d
....................\......\stm32f10x_exti.o
....................\......\stm32f10x_flash.crf
....................\......\stm32f10x_flash.d
....................\......\stm32f10x_flash.o
....................\......\stm32f10x_fsmc.crf
....................\......\stm32f10x_fsmc.d
....................\......\stm32f10x_fsmc.o
....................\......\stm32f10x_gpio.crf
....................\......\stm32f10x_gpio.d
....................\......\stm32f10x_gpio.o
....................\......\stm32f10x_i2c.crf
....................\......\stm32f10x_i2c.d
....................\......\stm32f10x_i2c.o
....................\......\stm32f10x_it.crf
....................\......\stm32f10x_it.d
....................\......\stm32f10x_it.o
....................\......\stm32f10x_iwdg.crf
....................\......\stm32f10x_iwdg.d
....................\......\stm32f10x_iwdg.o
....................\......\stm32f10x_pwr.crf
....................\......\stm32f10x_pwr.d
....................\......\stm32f10x_pwr.o
....................\......\stm32f10x_rcc.crf
....................\......\stm32f10x_rcc.d
....................\......\stm32f10x_rcc.o
....................\......\stm32f10x_rtc.crf
....................\......\stm32f10x_rtc.d
....................\......\stm32f10x_rtc.o
....................\......\stm32f10x_sdio.crf
....................\......\stm32f10x_sdio.d
....................\......\stm32f10x_sdio.o
....................\......\stm32f10x_spi.crf
....................\......\stm32f10x_spi.d
....................\......\stm32f10x_spi.o
....................\......\stm32f10x_tim.crf
....................\......\stm32f10x_tim.d
....................\......\stm32f10x_tim.o
....................\......\stm32f10x_usart.crf
....................\......\stm32f10x_usart.d
....................\......\stm32f10x_usart.

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