Based on STM32F1xx series microprocessor, ARM Kill development environment, using C language of a simple logic to understand the three button control three LED light out of the program. The main inspiration for beginners how to configure GPIO.

KEY2LED
.......\CORE
.......\....\core_cm3.c
.......\....\core_cm3.h
.......\....\startup_stm32f10x_hd.s
.......\FWLIB
.......\.....\inc
.......\.....\...\misc.h
.......\.....\...\stm32f10x_adc.h
.......\.....\...\stm32f10x_bkp.h
.......\.....\...\stm32f10x_can.h
.......\.....\...\stm32f10x_cec.h
.......\.....\...\stm32f10x_crc.h
.......\.....\...\stm32f10x_dac.h
.......\.....\...\stm32f10x_dbgmcu.h
.......\.....\...\stm32f10x_dma.h
.......\.....\...\stm32f10x_exti.h
.......\.....\...\stm32f10x_flash.h
.......\.....\...\stm32f10x_fsmc.h
.......\.....\...\stm32f10x_gpio.h
.......\.....\...\stm32f10x_i2c.h
.......\.....\...\stm32f10x_iwdg.h
.......\.....\...\stm32f10x_pwr.h
.......\.....\...\stm32f10x_rcc.h
.......\.....\...\stm32f10x_rtc.h
.......\.....\...\stm32f10x_sdio.h
.......\.....\...\stm32f10x_spi.h
.......\.....\...\stm32f10x_tim.h
.......\.....\...\stm32f10x_usart.h
.......\.....\...\stm32f10x_wwdg.h
.......\.....\src
.......\.....\...\misc.c
.......\.....\...\stm32f10x_adc.c
.......\.....\...\stm32f10x_bkp.c
.......\.....\...\stm32f10x_can.c
.......\.....\...\stm32f10x_cec.c
.......\.....\...\stm32f10x_crc.c
.......\.....\...\stm32f10x_dac.c
.......\.....\...\stm32f10x_dbgmcu.c
.......\.....\...\stm32f10x_dma.c
.......\.....\...\stm32f10x_exti.c
.......\.....\...\stm32f10x_flash.c
.......\.....\...\stm32f10x_fsmc.c
.......\.....\...\stm32f10x_gpio.c
.......\.....\...\stm32f10x_i2c.c
.......\.....\...\stm32f10x_iwdg.c
.......\.....\...\stm32f10x_pwr.c
.......\.....\...\stm32f10x_rcc.c
.......\.....\...\stm32f10x_rtc.c
.......\.....\...\stm32f10x_sdio.c
.......\.....\...\stm32f10x_spi.c
.......\.....\...\stm32f10x_tim.c
.......\.....\...\stm32f10x_usart.c
.......\.....\...\stm32f10x_wwdg.c
.......\keilkilll.bat
.......\OBJ
.......\...\Template.hex
.......\USER
.......\....\JLinkSettings.ini
.......\....\Listings
.......\....\main.c
.......\....\stm32f10x.h
.......\....\stm32f10x_conf.h
.......\....\stm32f10x_it.c
.......\....\stm32f10x_it.h
.......\....\system_stm32f10x.c
.......\....\system_stm32f10x.h
.......\....\Template.uvguix.Administrator
.......\....\Template.uvoptx
.......\....\Template.uvprojx

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