AhoLib: Fichero Fuente dma.h

00001 #ifndef __DMA_H
00002 #define __DMA_H
00003 
00004 /**********************************************************/
00005 /*/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\*/
00006 /*
00007 Copyright: 1993 - Grupo de Voz (DAET) ETSII/IT-Bilbao
00008 
00009 Nombre fuente................ DMA.H
00010 Nombre paquete............... -
00011 Lenguaje fuente.............. C (Borland C/C++ 3.1)
00012 Estado....................... Completado
00013 Dependencia Hard/OS.......... DMA
00014 Codigo condicional........... -
00015 
00016 Codificacion................. Borja Etxebarria
00017 
00018 Version  dd/mm/aa  Autor     Proposito de la edicion
00019 -------  --------  --------  -----------------------
00020 2.0.0    28/02/94  Borja     Unificado DMA8 con DMA16
00021 1.0.0    06/08/93  Borja     Codificacion inicial.
00022 
00023 ======================== Contenido ========================
00024 Fichero de cabecera y definiciones de DMA.H.
00025 
00026 Definicion de funciones para la programacion del DMA
00027 de 8 y 16 bits del AT
00028 ===========================================================
00029 */
00030 /*/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\*/
00031 /**********************************************************/
00032 
00033 #include "lmem.h"
00034 
00035 /**********************************************************/
00036 
00037 #ifdef __cplusplus
00038 extern "C" {
00039 #endif
00040 
00041 /**********************************************************/
00042 /* constantes utiles
00043 ....................
00044 These are some useful alternative names for boolean flags that you can
00045 use to clarify your source code. */
00046 
00047 #define DMA_AUTO_INIT   TRUE
00048 #define DMA_SINGLE_CICLE   FALSE
00049 #define DMA_WRITE_TO_MEM   TRUE
00050 #define DMA_READ_FROM_MEM   FALSE
00051 #define DMA_INCREMENT  FALSE
00052 #define DMA_DECREMENT  TRUE
00053 #define DMA_ENABLE   TRUE
00054 #define DMA_DISABLE   FALSE
00055 
00056 /**********************************************************/
00057 /* {devuelve} TRUE cuando el canal {channel} es de 16 bits,
00058 o FALSE sin es de 8
00059 ....................
00060 {returns} TRUE when {channel} is a 16 bit DMA channel, or
00061 FALSE if it is an 8 bit channel */
00062 
00063 #define DMA_IS_DMA16(channel)  ((channel) > 3)
00064 
00065 /**********************************************************/
00066 
00067 VOID dma_resetb( VOID );
00068 VOID dma_set( UINT8 channel, BOOL decrement, BOOL autoinit, BOOL writetomem,
00069                 UINT32 lmem, UINT16 count_l1, BOOL enable_dma );
00070 VOID dma_set_mode( UINT8 channel, BOOL decrement, BOOL autoinit,
00071         BOOL writetomem, BOOL enable_dma );
00072 VOID dma_set_buff( UINT8 channel, UINT32 lmem, UINT16 count_l1,
00073         BOOL enable_dma );
00074 VOID dma_set_buff_addr( UINT8 channel, UINT32 lmem,      BOOL enable_dma );
00075 VOID dma_set_buff_count( UINT8 channel, UINT16 count_l1, BOOL enable_dma );
00076 VOID dma_disable( UINT8 channel );
00077 VOID dma_enable( UINT8 channel );
00078 VOID dma_sreq( UINT8 channel );
00079 UINT16 dma_get_count_l1( UINT8 channel );
00080 UINT32 dma_get_addr( UINT8 channel );
00081 UINT8 dma_get_status( VOID );
00082 BOOL dma_get_dmareq( UINT8 channel );
00083 BOOL dma_get_status_dmareq( UINT8 status, UINT8 channel );
00084 BOOL dma_get_tc( UINT8 channel );
00085 BOOL dma_get_status_tc( UINT8 status, UINT8 channel );
00086 
00087 /**********************************************************/
00088 
00089 #ifdef __cplusplus
00090 }  /* extern "C" */
00091 #endif
00092 
00093 /**********************************************************/
00094 
00095 #endif