Some people say that stm32 I2C is difficult to use, but it is not very difficult, I was directly with the official library function to achieve

TIM
...\DEFINES
...\RTE
...\...\Device
...\...\......\STM32F401RE
...\...\......\...........\RTE_Device.h
...\...\......\...........\startup_stm32f401xx.s
...\...\......\...........\system_stm32f4xx.c
...\...\RTE_Components.h
...\STM32F4xx_StdPeriph_Driver
...\..........................\inc
...\..........................\...\misc.h
...\..........................\...\stm32f4xx_adc.h
...\..........................\...\stm32f4xx_can.h
...\..........................\...\stm32f4xx_crc.h
...\..........................\...\stm32f4xx_cryp.h
...\..........................\...\stm32f4xx_dac.h
...\..........................\...\stm32f4xx_dbgmcu.h
...\..........................\...\stm32f4xx_dcmi.h
...\..........................\...\stm32f4xx_dma.h
...\..........................\...\stm32f4xx_exti.h
...\..........................\...\stm32f4xx_flash.h
...\..........................\...\stm32f4xx_fsmc.h
...\..........................\...\stm32f4xx_gpio.h
...\..........................\...\stm32f4xx_hash.h
...\..........................\...\stm32f4xx_i2c.h
...\..........................\...\stm32f4xx_iwdg.h
...\..........................\...\stm32f4xx_pwr.h
...\..........................\...\stm32f4xx_rcc.h
...\..........................\...\stm32f4xx_rng.h
...\..........................\...\stm32f4xx_rtc.h
...\..........................\...\stm32f4xx_sdio.h
...\..........................\...\stm32f4xx_spi.h
...\..........................\...\stm32f4xx_syscfg.h
...\..........................\...\stm32f4xx_tim.h
...\..........................\...\stm32f4xx_usart.h
...\..........................\...\stm32f4xx_wwdg.h
...\..........................\Release_Notes.html
...\..........................\src
...\..........................\...\misc.c
...\..........................\...\stm32f4xx_adc.c
...\..........................\...\stm32f4xx_can.c
...\..........................\...\stm32f4xx_crc.c
...\..........................\...\stm32f4xx_cryp.c
...\..........................\...\stm32f4xx_cryp_aes.c
...\..........................\...\stm32f4xx_cryp_des.c
...\..........................\...\stm32f4xx_cryp_tdes.c
...\..........................\...\stm32f4xx_dac.c
...\..........................\...\stm32f4xx_dbgmcu.c
...\..........................\...\stm32f4xx_dcmi.c
...\..........................\...\stm32f4xx_dma.c
...\..........................\...\stm32f4xx_exti.c
...\..........................\...\stm32f4xx_flash.c
...\..........................\...\stm32f4xx_fsmc.c
...\..........................\...\stm32f4xx_gpio.c
...\..........................\...\stm32f4xx_hash.c
...\..........................\...\stm32f4xx_hash_md5.c
...\..........................\...\stm32f4xx_hash_sha1.c
...\..........................\...\stm32f4xx_i2c.c
...\..........................\...\stm32f4xx_iwdg.c
...\..........................\...\stm32f4xx_pwr.c
...\..........................\...\stm32f4xx_rcc.c
...\..........................\...\stm32f4xx_rng.c
...\..........................\...\stm32f4xx_rtc.c
...\..........................\...\stm32f4xx_sdio.c
...\..........................\...\stm32f4xx_spi.c
...\..........................\...\stm32f4xx_syscfg.c
...\..........................\...\stm32f4xx_tim.c
...\..........................\...\stm32f4xx_usart.c
...\..........................\...\stm32f4xx_wwdg.c
...\TIM.map
...\TIM.uvprojx
...\USE
...\...\defines.h
...\...\delay.c
...\...\delay.h
...\...\GY86.c
...\...\GY86.h
...\...\IIC_Init.c
...\...\IIC_Init.h
...\...\IMU.c
...\...\IMU.h
...\...\includes.h
...\...\main.c
...\...\stm32f4xx_conf.h
...\...\stm32f4xx_it.c
...\...\stm32f4xx_it.h
...\...\TIM.c
...\...\TIM.h

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