I have written procedures, a GPIO based STM32F103 is very simple, use the keil development, suitable for beginners to learn!

gpio
....\FWlib
....\.....\SRC
....\.....\...\misc.c
....\.....\...\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_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
....\.....\...\system_stm32f10x.c
....\.....\inc
....\.....\...\misc.h
....\.....\...\stm32f10x_adc.h
....\.....\...\stm32f10x_bkp.h
....\.....\...\stm32f10x_can.h
....\.....\...\stm32f10x_conf.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
....\JLinkLog.txt
....\gpio.Opt
....\gpio.Uv2
....\gpio_Opt.Bak
....\gpio_Target 1.dep
....\gpio_Uv2.Bak
....\lst
....\...\STM32F10x.lst
....\...\core_cm3.i
....\...\gpio.map
....\...\main.i
....\...\stm32f10x_gpio.i
....\...\stm32f10x_it.i
....\...\stm32f10x_rcc.i
....\...\system_stm32f10x.i
....\output
....\......\ExtDll.iex
....\......\STM32F10x.o
....\......\core_cm3.crf
....\......\core_cm3.d
....\......\core_cm3.o
....\......\core_cm3.txt
....\......\gpio.axf
....\......\gpio.hex
....\......\gpio.htm
....\......\gpio.lnp
....\......\gpio.plg
....\......\gpio.sct
....\......\gpio.tra
....\......\main.crf
....\......\main.d
....\......\main.o
....\......\main.txt
....\......\stm32f10x_gpio.crf
....\......\stm32f10x_gpio.d
....\......\stm32f10x_gpio.o
....\......\stm32f10x_gpio.txt
....\......\stm32f10x_it.crf
....\......\stm32f10x_it.d
....\......\stm32f10x_it.o
....\......\stm32f10x_it.txt
....\......\stm32f10x_rcc.crf
....\......\stm32f10x_rcc.d
....\......\stm32f10x_rcc.o
....\......\stm32f10x_rcc.txt
....\......\system_stm32f10x.crf
....\......\system_stm32f10x.d
....\......\system_stm32f10x.o
....\......\system_stm32f10x.txt
....\startup

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