In the STM32F469 to achieve the DMA way to send and receive UART data engineering, can send and receive variable length of the data, compared to more flexible interrupt. The main DMA part of the driver code has been encapsulated

F469USART
.........\F469USART
.........\F469USART.ioc
.........\F469USARTVer00.zip
.........\.........\.mxproject
.........\.........\Drivers
.........\.........\.......\CMSIS
.........\.........\.......\.....\Device
.........\.........\.......\.....\......\ST
.........\.........\.......\.....\......\..\STM32F4xx
.........\.........\.......\.....\......\..\.........\Include
.........\.........\.......\.....\......\..\.........\.......\stm32f401xc.h
.........\.........\.......\.....\......\..\.........\.......\stm32f401xe.h
.........\.........\.......\.....\......\..\.........\.......\stm32f405xx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f407xx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f410cx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f410rx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f410tx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f411xe.h
.........\.........\.......\.....\......\..\.........\.......\stm32f412cx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f412rx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f412vx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f412zx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f415xx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f417xx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f427xx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f429xx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f437xx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f439xx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f446xx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f469xx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f479xx.h
.........\.........\.......\.....\......\..\.........\.......\stm32f4xx.h
.........\.........\.......\.....\......\..\.........\.......\system_stm32f4xx.h
.........\.........\.......\.....\......\..\.........\Source
.........\.........\.......\.....\......\..\.........\......\Templates
.........\.........\.......\.....\......\..\.........\......\.........\arm
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f401xc.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f401xe.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f405xx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f407xx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f410cx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f410rx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f410tx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f411xe.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f412cx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f412rx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f412vx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f412zx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f415xx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f417xx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f427xx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f429xx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f437xx.s
.........\.........\.......\.....\......\..\.........\......\.........\...\startup_stm32f439xx.s
.........\.

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