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  • 大小: 16.66MB
    文件類型: .zip
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    發布日期: 2023-07-26
  • 語言: 其他
  • 標簽: stm32f407??SPI??DMA??CH376??

資源簡介

內含SPI1/SPI2兩個接口的讀寫版本，都是用的DMA方式，通信速度還不夠快，好像幾十KB吧，具體忘了多少了。下載者可以試著優化一下，速度還可以提高的。部分測試結果：https://blog.csdn.net/weixin_41565755/article/details/83115489

資源截圖

代碼片段和文件信息 

#include?“dma.h“
/*?SPI?DR寄存器的地址，可通過查看SPI1一步一步得到?*/

/*?定義接收緩沖和發送緩沖?*/
u8?SPI_RX_BUFFER[CH376_RX_LEN];
u8?SPI_TX_BUFFER[CH376_TX_LEN];?

/*******************************************************************************
*?函?數?名?????????:?DMAx_Init
*?函數功能		???:?DMA初始化函數
*?輸????入?????????:?DMA_Streamx:DMA數據流DMA1_Stream0~7/DMA2_Stream0~7
					?chx:DMA通道選擇@ref?DMA_channel?DMA_Channel_0~DMA_Channel_7
					?par:外設地址
					?mar:存儲器地址
					?ndtr:數據傳輸量
*?輸????出?????????:?無
*******************************************************************************/?
void?DMAx_Init（DMA_Stream_TypeDef?*DMA_Streamxu32?chxu32?paru32?maru16?ndtr）
{
	DMA_InitTypeDef??DMA_InitStructure;
	
	if（（u32）DMA_Streamx>（u32）DMA2）//得到當前stream是屬于DMA2還是DMA1
	{
		RCC_AHB1PeriphClockCmd（RCC_AHB1Periph_DMA2ENABLE）;//DMA2時鐘使能?	
	}
	else?
	{
		RCC_AHB1PeriphClockCmd（RCC_AHB1Periph_DMA1ENABLE）;//DMA1時鐘使能?
	}
	DMA_DeInit（DMA_Streamx）;
	
	while?（DMA_GetCmdStatus（DMA_Streamx）?!=?DISABLE）{}//等待DMA可配置?
	
	/*?配置?DMA?Stream?*/
	DMA_InitStructure.DMA_Channel?=?chx;??//通道選擇
	DMA_InitStructure.DMA_PeripheralbaseAddr?=?par;//DMA外設地址
	DMA_InitStructure.DMA_Memory0baseAddr?=?mar;//DMA?存儲器0地址
	DMA_InitStructure.DMA_DIR?=?DMA_DIR_MemoryToPeripheral;//存儲器到外設模式
	DMA_InitStructure.DMA_BufferSize?=?ndtr;//數據傳輸量?
	DMA_InitStructure.DMA_PeripheralInc?=?DMA_PeripheralInc_Disable;//外設非增量模式
	DMA_InitStructure.DMA_MemoryInc?=?DMA_MemoryInc_Enable;//存儲器增量模式
	DMA_InitStructure.DMA_PeripheralDataSize?=?DMA_PeripheralDataSize_Byte;//外設數據長度:8位
	DMA_InitStructure.DMA_MemoryDataSize?=?DMA_MemoryDataSize_Byte;//存儲器數據長度:8位
	DMA_InitStructure.DMA_Mode?=?DMA_Mode_Normal;//?使用普通模式?
	DMA_InitStructure.DMA_Priority?=?DMA_Priority_Medium;//中等優先級
	DMA_InitStructure.DMA_FIFOMode?=?DMA_FIFOMode_Disable;?????????
	DMA_InitStructure.DMA_FIFOThreshold?=?DMA_FIFOThreshold_Full;
	DMA_InitStructure.DMA_MemoryBurst?=?DMA_MemoryBurst_Single;//存儲器突發單次傳輸
	DMA_InitStructure.DMA_PeripheralBurst?=?DMA_PeripheralBurst_Single;//外設突發單次傳輸
	DMA_Init（DMA_Streamx?&DMA_InitStructure）;//初始化DMA?Stream
	
}

/*******************************************************************************
*?函?數?名?????????:?DMAx_Enable
*?函數功能		???:?開啟一次DMA傳輸
*?輸????入?????????:?DMA_Streamx:DMA數據流DMA1_Stream0~7/DMA2_Stream0~7
					?ndtr:數據傳輸量
*?輸????出?????????:?無
*******************************************************************************/?
void?DMAx_Enable（DMA_Stream_TypeDef?*DMA_Streamxu16?ndtr）
{
?
	DMA_Cmd（DMA_Streamx?DISABLE）;??????????????????????//關閉DMA傳輸?
	
	while?（DMA_GetCmdStatus（DMA_Streamx）?!=?DISABLE）;	//確保DMA可以被設置??
		
	DMA_SetCurrDataCounter（DMA_Streamxndtr）;??????????//數據傳輸量??
?
	DMA_Cmd（DMA_Streamx?ENABLE）;??????????????????????//開啟DMA傳輸?
}	??

/*?如果定義為DMA傳輸方式，進行DMA初始化?*/
/**
??*	@breif??The?spi?dma?init?function.
??*?@param??None
??*?@retval?None
??*/??
void?spi_dma_init（void）
{
	DMA_InitTypeDef?DMA_InitStructure;
	
	/*?打開DMA2時鐘?*/
	RCC_AHB1PeriphClockCmd（RCC_AHB1Peri

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2019-01-03?19:00??stm32F407?USB_SPI_DMA_CH376通信_成功\
?????目錄???????????0??2019-01-03?19:00??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\
?????目錄???????????0??2019-01-03?19:00??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\
?????目錄???????????0??2019-01-03?19:00??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\CH376\
?????文件???????40231??2018-10-20?09:57??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\CH376\CH376INC.H
?????文件???????40227??2012-05-19?17:08??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\CH376\CH376INC.H~RF2c9f694f.TMP
?????文件???????64308??2018-10-21?18:34??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\CH376\FILE_SYS.C
?????文件????????9201??2018-10-20?11:00??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\CH376\FILE_SYS.H
?????文件????????6863??2018-10-21?18:14??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\CH376\SPI_Init.C
?????文件????????1539??2018-10-21?14:31??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\CH376\SPI_Init.H
?????目錄???????????0??2019-01-03?19:00??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\dma\
?????文件???????10190??2018-10-21?18:11??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\dma\dma.c
?????文件?????????637??2018-10-21?16:25??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\dma\dma.h
?????目錄???????????0??2019-01-03?19:00??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\exti\
?????文件????????4590??2016-11-11?19:48??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\exti\exti.c
?????文件??????????97??2016-08-26?10:59??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\exti\exti.h
?????目錄???????????0??2019-01-03?19:00??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\key\
?????文件????????1927??2016-11-11?19:40??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\key\key.c
?????文件?????????941??2016-10-13?10:26??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\key\key.h
?????目錄???????????0??2019-01-03?19:00??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\led\
?????文件?????????854??2016-11-11?19:18??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\led\led.c
?????文件?????????144??2016-08-23?17:28??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\led\led.h
?????目錄???????????0??2019-01-03?19:00??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\spi\
?????文件????????3122??2018-10-21?18:14??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\spi\spi.c
?????文件?????????219??2016-05-21?11:35??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\spi\spi.h
?????目錄???????????0??2019-01-03?19:00??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\tftlcd\
?????文件???????42327??2016-09-24?15:40??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\tftlcd\font.H
?????文件???????29355??2016-11-02?08:30??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\tftlcd\tftlcd.c
?????文件????????2436??2016-11-02?08:27??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\APP\tftlcd\tftlcd.h
?????目錄???????????0??2019-01-03?19:00??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\DebugConfig\
?????文件????????2851??2017-11-21?16:21??stm32F407?USB_SPI_DMA_CH376通信_成功\F407?USB_SPI1_DMA_CH376通信_成功\DebugConfig\Target_1_STM32F407ZG.dbgconf
............此處省略468個文件信息

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