Renesas Single-Chip Microcomputer M38C89T-ADF Uživatelský manuál stáhnout pdf (Strana 81)

Rev.1.00 May 22 2012

REJ09B0566

4-61

3BLibrary Reference

4.2.6 37BDMA Controller R_DMAC_Destroy

2) R_DMAC_Destroy

Synopsis

Shutdown the DMA controller.

Prototype bool R_DMAC_Destroy(

uint8_t data1

// channel to be disabled

);

Description

Shutdown the DMAC module.

[data1]

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

Return value

True if the shutdown succeeded; otherwise false.

Category

DMA controller

Reference

R_DMAC_Create, R_DMAC_Control

Remarks • If all channels have been suspended, the DMAC module will be disabled.

• If another peripheral is being used to trigger a DMA transfer, stop the triggers from that peripheral (using

Control or Destroy for that peripheral) before calling this function.

Program example

/* PDL definitions */

#include “r_pdl_dmac.h”

/* PDL device-specific definitions */

#include “r_pdl_definitions.h”

void func(void)

{

/* Shutdown the DMA controller for channel 0 */

R_DMAC_Destroy(

);

}

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Renesas Single-Chip Microcomputer M38C89T-ADF Uživatelský manuál Strana 81