In ucos environment, the use dma to achieve receive and transmit on 485 and improve the operating efficiency of the cpu

RS485_1通讯_DMA收发数据例程（ucos版）
.....................................\App
.....................................\...\App_Inc.h
.....................................\...\Main.c
.....................................\...\Task_Startup.c
.....................................\...\Task_Startup.h
.....................................\...\Task_Test.c
.....................................\...\Task_Test.h
.....................................\BSP
.....................................\...\Bsp_Global.c
.....................................\...\Bsp_Global.h
.....................................\...\DMA.C
.....................................\...\DMA.H
.....................................\...\LED.C
.....................................\...\LED.h
.....................................\...\NVIC.C
.....................................\...\NVIC.H
.....................................\...\SCI.c
.....................................\...\SCI.h
.....................................\...\main
.....................................\...\main.h
.....................................\CMSIS
.....................................\.....\Core
.....................................\.....\....\arm_cortexM4lf_math.lib
.....................................\.....\....\arm_math.h
.....................................\.....\....\core_cm4.h
.....................................\.....\....\core_cmFunc.h
.....................................\.....\....\core_cmInstr.h
.....................................\.....\....\startup_stm32f4xx.s
.....................................\.....\....\stm32f4xx.h
.....................................\.....\....\stm32f4xx_conf.h
.....................................\.....\....\system_stm32f4xx.c
.....................................\.....\....\system_stm32f4xx.h
.....................................\.....\Driver
.....................................\.....\......\misc.c
.....................................\.....\......\misc.h
.....................................\.....\......\stm32f4xx_adc.c
.....................................\.....\......\stm32f4xx_adc.h
.....................................\.....\......\stm32f4xx_can.c
.....................................\.....\......\stm32f4xx_can.h
.....................................\.....\......\stm32f4xx_crc.c
.....................................\.....\......\stm32f4xx_crc.h
.....................................\.....\......\stm32f4xx_cryp.c
.....................................\.....\......\stm32f4xx_cryp.h
.....................................\.....\......\stm32f4xx_cryp_aes.c
.....................................\.....\......\stm32f4xx_cryp_des.c
.....................................\.....\......\stm32f4xx_cryp_tdes.c
.....................................\.....\......\stm32f4xx_dac.c
.....................................\.....\......\stm32f4xx_dac.h
.....................................\.....\......\stm32f4xx_dbgmcu.c
.....................................\.....\......\stm32f4xx_dbgmcu.h
.....................................\.....\......\stm32f4xx_dcmi.c
.....................................\.....\......\stm32f4xx_dcmi.h
.....................................\.....\......\stm32f4xx_dma.c
.....................................\.....\......\stm32f4xx_dma.h
.....................................\.....\......\stm32f4xx_exti.c
.....................................\.....\......\stm32f4xx_exti.h
.....................................\.....\......\stm32f4xx_flash.c
.....................................\.....\......\stm32f4xx_flash.h
.....................................\.....\......\stm32f4xx_fsmc.c
.....................................\.....\......\stm32f4xx_fsmc.h
.....................................\.....\......\stm32f4xx_gpio.c
.....................................\.....\......\stm32f4xx_gpio.h
.....................................\.....\......\stm32f4xx_hash.c
.....................................\.....\......\stm32f4xx_hash.h
.....................................\.....\......\stm32f4xx_hash_md5.c
.....................................\.....\......\stm32f4xx_hash_sha1.c
.................

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