Based on the DS3231 of the STM32 test program, the module can be used to buy back the program to test. The author is not responsible for the problems arising the application of the product design only for testing.

DS3231\CMSIS\core_cm3.c
......\.....\core_cm3.h
......\.....\startup\startup_stm32f10x_cl.s
......\.....\.......\startup_stm32f10x_hd.s
......\.....\.......\startup_stm32f10x_hd_vl.s
......\.....\.......\startup_stm32f10x_ld.s
......\.....\.......\startup_stm32f10x_ld_vl.s
......\.....\.......\startup_stm32f10x_md.s
......\.....\.......\startup_stm32f10x_md_vl.s
......\.....\.......\startup_stm32f10x_xl.s
......\.....\stm32f10x.h
......\.....\system_stm32f10x.c
......\.....\system_stm32f10x.h
......\Driver\delay.c
......\......\delay.h
......\......\ds3231.c
......\......\ds3231.h
......\......\gpio.c
......\......\gpio.h
......\......\i2c.c
......\......\i2c.h
......\......\usart1.c
......\......\usart1.h
......\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
......\Listing\DS3231.map
......\.......\startup_stm32f10x_hd.lst
......\Output\core_cm3.crf
......\......\core_cm3.d
......\......\core_cm3.o
......\......\delay.crf
......\......\delay.d
......\......\delay.o
......\......\DS3231.axf
......\......\ds3231.crf
......\......\ds3231.d
......\......\DS3231.hex
......\......\DS3231.htm
......\......\DS3231.lnp
......\......\ds3231.o
......\......\DS3231.plg
......\......\DS3231.sct
......\......\DS3231.tra
......\......\ds3231.__i
......\......\ExtDll.iex
......\......\gpio.crf
......\......\gpio.d
......\......\gpio.o
......\......\i2c.crf
......\......\i2c.d
......\......\i2c.o
......\......\main.crf
......\......\main.d
......\......\main.o
......\......\main.__i
......\......\misc.crf

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