Development environment: KEIL. Demo STM32F1XX the GPIO use. With the most simple routine test chip is still working.

stm32fxx_gpio_demo\test918.uvprojx
..................\test918.uvoptx
..................\DebugConfig\Target_1_STM32F103ZE.dbgconf
..................\RTE\Device\STM32F103ZE\startup_stm32f10x_hd.s
..................\...\......\...........\system_stm32f10x.c
..................\...\......\...........\RTE_Device.h
..................\...\RTE_Components.h
..................\Objects\main.crf
..................\.......\system_stm32f10x.crf
..................\.......\gpio_stm32f10x.crf
..................\.......\ExtDll.iex
..................\JLinkLog.txt
..................\JLinkSettings.ini
..................\test918.uvguix.Administrator
..................\main.c
..................\RTE\Device\STM32F103ZE
..................\...\Device
..................\DebugConfig
..................\RTE
..................\Objects
..................\Listings
stm32fxx_gpio_demo

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