Hardware presentation/abstraction for DMA (DMA/DMAX) More...

#include <bsp430/periph.h>

Data Structures
struct	sBSP430hplDMAchannel

struct	sBSP430hplDMA

struct	sBSP430halDMA

Macros
#define	BSP430_MODULE_DMAX

#define	BSP430_MODULE_DMA

#define	BSP430_DMA_HAL_HPL_VARIANT_DMA 1

#define	BSP430_DMA_HAL_HPL_VARIANT_DMAX 2

#define	BSP430_DMA_NUM_CHANNELS 3

#define	configBSP430_HAL_DMA 0

#define	BSP430_HAL_DMA (&xBSP430hal_DMA_)

#define	configBSP430_HPL_DMA (configBSP430_HAL_DMA - 0)

#define	BSP430_PERIPH_DMA ((tBSP430periphHandle)(BSP430_PERIPH_DMA_BASEADDRESS_))

#define	BSP430_HPL_DMA ((volatile sBSP430hplDMA *)BSP430_PERIPH_DMA)

#define	configBSP430_HAL_DMA_ISR (configBSP430_HAL_DMA - 0)

Typedefs
typedef struct sBSP430hplDMAchannel	sBSP430hplDMAchannel

typedef struct sBSP430hplDMA	sBSP430hplDMA

typedef struct sBSP430halDMA	sBSP430halDMA

typedef struct sBSP430halDMA *	hBSP430halDMA

Detailed Description

Hardware presentation/abstraction for DMA (DMA/DMAX)

The Direct Memory Access (DMA) module is present on certain MCUs in all MSP430 families. The functionality is essentially the same across the line, but the register layout is different on CPUX-based devices where addresses require 20 bits.

Module Configuration Options

None supported.

Hardware Presentation Layer

There is only one instance of DMA on any MCU, but because that instance can support multiple channels the sBSP430hplDMA structure is defined to simplify access to the sBSP430hplDMAchannel registers for a channel index.

Hardware Adaptation Layer

The sBSP430halDMA structure exists primarily to enable sharing the DMA interrupt infrastructure among independently maintained modules.

There are no value-added functions for this peripheral.

Homepage: http://github.com/pabigot/bsp430

Copyright: Copyright 2012-2014, Peter A. Bigot. Licensed under BSD-3-Clause

Macro Definition Documentation

#define BSP430_DMA_HAL_HPL_VARIANT_DMA 1

Field value for sBSP430halDMA.hal_state.cflags when using a DMA peripheral.

This is informational only and can be used to distinguish the MCU from those with the later DMAX peripheral.

#define BSP430_DMA_HAL_HPL_VARIANT_DMAX 2

Field value for sBSP430halDMA.hal_state.cflags when using a DMAX peripheral.

This is informational only and can be used to distinguish the MCU from those with the earlier DMA peripheral.

#define BSP430_DMA_NUM_CHANNELS 3

Number of DMA channels supported.

This is an MCU-specific value.

#define BSP430_HAL_DMA (&xBSP430hal_DMA_)

sBSP430halDMA HAL handle for BSP430_PERIPH_DMA.

This pointer may be used only if configBSP430_HAL_DMA is defined to a true value.

Dependency:: configBSP430_HAL_DMA

#define BSP430_HPL_DMA ((volatile sBSP430hplDMA *)BSP430_PERIPH_DMA)

sBSP430hplDMA HPL pointer for BSP430_PERIPH_DMA.

This pointer to a volatile structure overlaying the DMA peripheral register map may be used only if configBSP430_HPL_DMA is defined to a true value.

Dependency:: configBSP430_HPL_DMA

#define BSP430_MODULE_DMA

Value:

(defined(__MSP430_HAS_DMA_1__)        \
                           || defined(__MSP430_HAS_DMA_6__)     \
                           || (BSP430_MODULE_DMAX - 0))

Defined to true if any DMA peripheral is supported.

Defined on inclusion of <bsp430/periph/dma.h> based on MCU-specific flags. The value evaluates to true if the target MCU supports the DMA or DMAX peripheral, and false if it does not.

C Preprocessor Only:: This macro may have a value that restricts its use to C preprocessor conditional directives.

#define BSP430_MODULE_DMAX

Value:

(defined(__MSP430_HAS_DMAX_3__) \

|| defined(__MSP430_HAS_DMAX_6__))

Defined to true if DMAX peripheral is supported.

Defined on inclusion of <bsp430/periph/dma.h> based on MCU-specific flags. The value evaluates to true if the target MCU supports the DMAX peripheral, and false if it does not.