cpu_dma.h File Reference

DMA CPU specific definitions for the STM32 family. More...

Detailed Description

DMA CPU specific definitions for the STM32 family.

Author

Hauke Petersen hauke.nosp@m..pet.nosp@m.ersen.nosp@m.@fu-.nosp@m.berli.nosp@m.n.de

Vincent Dupont vince.nosp@m.nt@o.nosp@m.takey.nosp@m.s.co.nosp@m.m

Joshua DeWeese jdewe.nosp@m.ese@.nosp@m.prime.nosp@m.cont.nosp@m.rols..nosp@m.com

Definition in file cpu_dma.h.

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Data Structures
struct	dma_conf_t
	DMA configuration. More...
#define	DMA_CHAN_CONFIG_UNSUPPORTED   (UINT8_MAX)
	DMA channel/trigger configuration for DMA peripherals without channel/trigger filtering such as the stm32f1 and stm32f3.
enum	dma_mode_t { DMA_PERIPH_TO_MEM = 0 , DMA_MEM_TO_PERIPH = 1 , DMA_MEM_TO_MEM = 2 }
	DMA modes. More...
enum	dma_burst_t { DMA_BURST_SINGLE = 0 , DMA_BURST_INCR4 = 1 , DMA_BURST_INCR8 = 2 , DMA_BURST_INCR16 = 3 }
	Burst Transfer modes for F2/F4/F7. More...
enum	dma_fifo_thresh_t { DMA_FIFO_FULL_1_4 = 0 , DMA_FIFO_FULL_1_2 = 1 , DMA_FIFO_FULL_3_4 = 2 , DMA_FIFO_FULL = 3 }
	Threshold selection in FIFO mode for F2/F4F7. More...
typedef unsigned	dma_t
	DMA type.

DMA Increment modes
#define	DMA_INC_SRC_ADDR   (0x04)
	DMA increment source address.
#define	DMA_INC_DST_ADDR   (0x08)
	DMA increment destination address.
#define	DMA_INC_BOTH_ADDR   (DMA_INC_SRC_ADDR | DMA_INC_DST_ADDR)
	DMA increment source + destination address.

DMA data width
#define	DMA_DATA_WIDTH_BYTE   (0x00)
	Byte width.
#define	DMA_DATA_WIDTH_HALF_WORD   (0x01)
	Half word width (2 bytes)
#define	DMA_DATA_WIDTH_WORD   (0x02)
	Word width (4 bytes)

Enumeration Type Documentation

dma_burst_t

enum dma_burst_t

Burst Transfer modes for F2/F4/F7.

Enumerator
DMA_BURST_SINGLE	single transfer
DMA_BURST_INCR4	incremental burst of 4 beats
DMA_BURST_INCR8	incremental burst of 8 beats
DMA_BURST_INCR16	incremental burst of 16 beats

Definition at line 71 of file cpu_dma.h.

dma_fifo_thresh_t

enum dma_fifo_thresh_t

Threshold selection in FIFO mode for F2/F4F7.

Enumerator
DMA_FIFO_FULL_1_4	1/4 full FIFO
DMA_FIFO_FULL_1_2	1/2 full FIFO
DMA_FIFO_FULL_3_4	3/4 full FIFO
DMA_FIFO_FULL	Full FIFO.

Definition at line 81 of file cpu_dma.h.

dma_mode_t

enum dma_mode_t

DMA modes.

Enumerator
DMA_PERIPH_TO_MEM	Peripheral to memory.
DMA_MEM_TO_PERIPH	Memory to peripheral.
DMA_MEM_TO_MEM	Memory to memory.

Definition at line 62 of file cpu_dma.h.