stm32 GPIO driver routine that reads the key data, the LED output data

gpio_key\CM3\core_cm3.c
........\...\core_cm3.h
........\...\stm32f10x.h
........\...\system_stm32f10x.c
........\...\system_stm32f10x.h
........\ExtDll.iex
........\GPIO_KEY.axf
........\GPIO_KEY.hex
........\GPIO_KEY.htm
........\GPIO_KEY.lnp
........\GPIO_KEY.map
........\GPIO_KEY.plg
........\GPIO_KEY.sct
........\GPIO_KEY.tra
........\GPIO_KEY.uvopt
........\GPIO_KEY.uvproj
........\GPIO_KEY_Target 1.dep
........\GPIO_KEY_uvopt.bak
........\GPIO_KEY_uvproj.bak
........\JLinkLog.txt
........\MAIN.C
........\main.crf
........\main.d
........\main.o
........\STM32F10x\cortexm3_macro.s
........\.........\STM32F10xLIB.Opt
........\.........\STM32F10xLIB.Uv2
........\.........\stm32f10x_adc.c
........\.........\stm32f10x_bkp.c
........\.........\stm32f10x_can.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_it.c
........\.........\stm32f10x_iwdg.c
........\.........\stm32f10x_lib.c
........\.........\stm32f10x_nvic.c
........\.........\stm32f10x_pwr.c
........\.........\stm32f10x_rcc.c
........\.........\stm32f10x_rtc.c
........\.........\stm32f10x_sdio.c
........\.........\stm32f10x_spi.c
........\.........\stm32f10x_systick.c
........\.........\stm32f10x_tim.c
........\.........\stm32f10x_usart.c
........\.........\stm32f10x_wwdg.c
........\.........\USB\usb_core.c
........\.........\...\usb_init.c
........\.........\...\usb_int.c
........\.........\...\usb_mem.c
........\.........\...\usb_regs.c
........\STM32F10x.lst
........\STM32F10x.o
........\STM32F10x.s
........\.........FWLib\Examples\ADC\3ADCs_DMA\main.c
........\..............\........\...\.........\readme.txt
........\..............\........\...\.........\stm32f10x_conf.h
........\..............\........\...\.........\stm32f10x_it.c
........\..............\........\...\.........\stm32f10x_it.h
........\..............\........\...\ADC1_DMA\main.c
........\..............\........\...\........\readme.txt
........\..............\........\...\........\stm32f10x_conf.h
........\..............\........\...\........\stm32f10x_it.c
........\..............\........\...\........\stm32f10x_it.h
........\..............\........\...\.nalogWatchdog\main.c
........\..............\........\...\..............\platform_config.h
........\..............\........\...\..............\readme.txt
........\..............\........\...\..............\stm32f10x_conf.h
........\..............\........\...\..............\stm32f10x_it.c
........\..............\........\...\..............\stm32f10x_it.h
........\..............\........\...\ExtLinesTrigger\main.c
........\..............\........\...\...............\readme.txt
........\..............\........\...\...............\stm32f10x_conf.h
........\..............\........\...\...............\stm32f10x_it.c
........\..............\........\...\...............\stm32f10x_it.h
........\..............\........\...\RegSimul_DualMode\main.c
........\..............\........\...\.................\readme.txt
........\..............\........\...\.................\stm32f10x_conf.h
........\..............\........\...\.................\stm32f10x_it.c
........\..............\........\...\.................\stm32f10x_it.h
........\..............\........\...\TIMTrigger_AutoInjection\main.c
........\..............\........\...\........................\readme.txt
........\..............\........\...\........................\stm32f10x_conf.h
........\..............\........\...\........................\stm32f10x_it.c
........\..............\........\...\........................\stm32f10x_it.h
........\..............\........\BKP\Backup_Data\main.c
........\..............\........\...\...........\platform_config.h
........\..............\........\...\...........\readme.txt
........\..............\........\...\...........\stm32f10x_conf.h
........\............

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