DMA(basi-on-stm32F4)

代码说明：

  1.实现了对串口2的操作。 2.利用DMA+空闲中断+串口，完成了对变帧长数据的接收与发送。(1. To achieve the serial port 2 operation. 2. Using DMA+ idle interrupt+ serial port, completed the variable frame data reception and transmission.)

文件列表：

DMA空闲中断试验-完成
....................\CORE
....................\....\core_cm4.h,109142,2014-07-17
....................\....\core_cm4_simd.h,22735,2014-07-17
....................\....\core_cmFunc.h,17146,2014-07-17
....................\....\core_cmInstr.h,20513,2014-07-17
....................\....\startup_stm32f40_41xxx.s,29605,2014-08-02
....................\FWLIB
....................\.....\inc
....................\.....\...\misc.h,6924,2014-08-01
....................\.....\...\stm32f4xx_adc.h,32880,2014-08-01
....................\.....\...\stm32f4xx_can.h,27318,2014-08-01
....................\.....\...\stm32f4xx_crc.h,2416,2014-08-01
....................\.....\...\stm32f4xx_cryp.h,14481,2014-08-01
....................\.....\...\stm32f4xx_dac.h,14946,2014-08-01
....................\.....\...\stm32f4xx_dbgmcu.h,4296,2014-08-01
....................\.....\...\stm32f4xx_dcmi.h,12977,2014-08-01
....................\.....\...\stm32f4xx_dma.h,28882,2014-08-01
....................\.....\...\stm32f4xx_dma2d.h,19692,2014-08-01
....................\.....\...\stm32f4xx_exti.h,8012,2014-08-01
....................\.....\...\stm32f4xx_flash.h,24467,2014-08-04
....................\.....\...\stm32f4xx_flash_ramfunc.h,3275,2014-08-04
....................\.....\...\stm32f4xx_fmc.h,44924,2014-08-01
....................\.....\...\stm32f4xx_fsmc.h,27181,2014-08-01
....................\.....\...\stm32f4xx_gpio.h,23548,2014-08-01
....................\.....\...\stm32f4xx_hash.h,10084,2014-08-01
....................\.....\...\stm32f4xx_i2c.h,31939,2014-08-01
....................\.....\...\stm32f4xx_iwdg.h,4323,2014-08-01
....................\.....\...\stm32f4xx_ltdc.h,21191,2014-08-01
....................\.....\...\stm32f4xx_pwr.h,7728,2014-08-01
....................\.....\...\stm32f4xx_rcc.h,30063,2014-08-01
....................\.....\...\stm32f4xx_rng.h,3958,2014-08-01
....................\.....\...\stm32f4xx_rtc.h,40546,2014-08-01
....................\.....\...\stm32f4xx_sai.h,25470,2014-08-01
....................\.....\...\stm32f4xx_sdio.h,22777,2014-08-01
....................\.....\...\stm32f4xx_spi.h,21178,2014-08-01
....................\.....\...\stm32f4xx_syscfg.h,8974,2014-08-01
....................\.....\...\stm32f4xx_tim.h,51689,2014-08-01
....................\.....\...\stm32f4xx_usart.h,17935,2014-08-01
....................\.....\...\stm32f4xx_wwdg.h,3542,2014-08-01
....................\.....\src
....................\.....\...\misc.c,11443,2014-08-01
....................\.....\...\stm32f4xx_adc.c,69068,2014-08-01
....................\.....\...\stm32f4xx_can.c,60150,2014-08-01
....................\.....\...\stm32f4xx_crc.c,3596,2014-08-01
....................\.....\...\stm32f4xx_cryp.c,35493,2014-08-01
....................\.....\...\stm32f4xx_cryp_aes.c,58026,2014-08-01
....................\.....\...\stm32f4xx_cryp_des.c,9822,2014-08-01
....................\.....\...\stm32f4xx_cryp_tdes.c,10577,2014-08-01
....................\.....\...\stm32f4xx_dac.c,26804,2014-08-01
....................\.....\...\stm32f4xx_dbgmcu.c,6809,2014-08-01
....................\.....\...\stm32f4xx_dcmi.c,18782,2014-08-01
....................\.....\...\stm32f4xx_dma.c,52917,2014-08-01
....................\.....\...\stm32f4xx_dma2d.c,27165,2014-08-01
....................\.....\...\stm32f4xx_exti.c,9828,2014-08-01
....................\.....\...\stm32f4xx_flash.c,63033,2014-08-01
....................\.....\...\stm32f4xx_flash_ramfunc.c,5444,2014-08-04
....................\.....\...\stm32f4xx_fmc.c,56568,2014-08-01
....................\.....\...\stm32f4xx_fsmc.c,41831,2014-08-01
....................\.....\...\stm32f4xx_gpio.c,25202,2014-08-01
....................\.....\...\stm32f4xx_hash.c,26630,2014-08-01
....................\.....\...\stm32f4xx_hash_md5.c,9594,2014-08-01
....................\.....\...\stm32f4xx_hash_sha1.c,9793,2014-08-01
....................\.....\...\stm32f4xx_i2c.c,54393,2014-08-01
....................\.....\...\stm32f4xx_iwdg.c,9348,2014-08-01
....................\.....\...\stm32f4xx_ltdc.c,39790,2014-08-01
....................\.....\...\stm32f4xx_pwr.c,37707,2014-08-01
....................\.....\...\stm32f4xx_rcc.c,98839,2014-08-01
....................\.....\...\stm32f4xx_rng.c,14060,2014-08-01
....................\.....\...\stm32f4xx_rtc.c,102891,2014-08-01
....................\.....\...\stm32f4xx_sai.c,46411,2014-08-01
....................\.....\...\stm32f4xx_sdio.c,38957,2014-08-01
....................\.....\...\stm32f4xx_spi.c,52522,2014-08-01
....................\.....\...\stm32f4xx_syscfg.c,9575,2014-08-01
....................\.....\...\stm32f4xx_tim.c,124732,2014-08-01
....................\.....\...\stm32f4xx_usart.c,57949,2014-08-01
....................\.....\...\stm32f4xx_wwdg.c,10492,2014-08-01
....................\HARDWARE
....................\........\BEEP
....................\........\....\beep.c,1147,2014-07-05
....................\........\....\beep.h,674,2014-05-04
....................\........\KEY
....................\........\...\key.c,1872,2014-07-12
....................\........\...\key.h,1180,2014-07-12
....................\........\LED
....................\........\...\led.c,1177,2014-07-05
....................\........\...\led.h,659,2014-07-03
....................\........\TIMER
....................\........\.....\timer.c,2063,2014-10-29
....................\........\.....\timer.h,579,2014-10-29
....................\keilkilll.bat,399,2011-04-23
....................\OBJ
....................\...\beep.crf,434297,2016-03-14
....................\...\beep.d,1676,2016-03-14
....................\...\beep.o,470068,2016-03-14
....................\...\delay.crf,435057,2016-03-14
....................\...\delay.d,1714,2016-03-14
....................\...\delay.o,475148,2016-03-14
....................\...\ExtDll.iex,19,2016-03-14
....................\...\key.crf,435395,2016-03-14