dma.h

来自「Freescale MCF5445evb 参考测试代码」· C头文件 代码 · 共 51 行

#ifndef __DMA_H
#define __DMA_H

#include "common.h"

#define W32( address , writedata )	                                        \
    *(volatile tWORD *)( address ) = ( writedata )
    
#define R8( address, destvar ) 	                                                \
    (( destvar ) = *(volatile tBYTE *)( address ))

#define R16( address, destvar )                                                 \
    (( destvar ) = *(volatile tHALF *)( address ))

#define R32( address, destvar )                                                 \
    (( destvar ) = *(volatile tWORD *)( address ))
    
#define  W8( address, writedata )	                                        \
    *(volatile tBYTE *) (address) = (writedata)

#define W16( address, writedata )	                                        \
    *(volatile tHALF *)(address) = (writedata)

#define W32( address , writedata )	                                        \
    *(volatile tWORD *)( address ) = ( writedata )

void WR32(tWORD Reg,tWORD WrData );

void WR8( tWORD Reg, tWORD WrData );

void WR16( tWORD Reg, tWORD WrData );

  
void WAIT_RE32(tWORD Reg,tWORD ExpData,tWORD Timeout );
   
void WAIT_REM32(tWORD Reg, tWORD ExpData, tWORD Mask, tWORD Timeout );

void BCLR32(tWORD address,tWORD mask );

void RE32( tWORD Reg , tWORD ExpData );

void RE16( tWORD Reg, tWORD ExpData );

void RE8( tWORD Reg, tWORD ExpData );

void software_dma_transfer(tWORD channel, tWORD saddr, tWORD daddr, tWORD bytes, tWORD ssize, tWORD dsize);

void dma_transfer_wait(tWORD channel, tWORD timeout);

#endif