Renesas Single-Chip Microcomputer M38C89T-ADF Bedienungsanleitung PDF herunterladen (Seite 84)

Rev.1.00 May 22 2012

REJ09B0566

4-64

Library Reference

4.2.6 37BDMA Controller R_DMAC_GetStatus

4) R_DMAC_GetStatus

Synopsis

Check the status of the DMA channel.

Prototype bool R_DMAC_GetStatus(

uint8_t data1, // Control options

uint16_t * data2, // Status flags pointer

uint32_t * data3, // Current source address pointer

uint32_t * data4, // Current destination address pointer

uint32_t * data5 // Current transfer byte count

);

Description

Return status flags and current channel registers.

[data1]

The channel number n (where n = 0 to 15).

[data2]

The status flags shall be stored in the following format:

b15 – b14 b13 – b12 b11 – b10 b9 – b8

- Cycle Steal Mode Select - Priority Mode

b7 – b3 b2 b1 b0

- AE NMIF DME

0: No Address error

occurred

1: Address error

occurred

0 : No NMI interrupt.

1 : NMI interrupt

occurred.

0: DMA transfer is

disabled

1: DMA transfer is

enabled

[data3]

Where the current source address shall be stored. Specify PDL_NA if it is not required.

[data4]

Where the current destination address shall be stored. Specify PDL_NA if it is not required.

[data5]

Where the current transfer byte count shall be stored. Specify PDL_NA if it is not required.

Return value

True if all parameters are valid and exclusive; otherwise false.

Kommentare zu diesen Handbüchern

Keine Kommentare

Renesas Single-Chip Microcomputer M38C89T-ADF Bedienungsanleitung Seite 84

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Vernetzung Renesas Single-Chip Microcomputer M38C89T-ADF