qspi_dma.c File Reference

#include "chip.h"

Macros
#define	DMA_QSPI_LLI   2

Functions
uint32_t	QSPID_Configure (QspiDma_t *pQspidma, QspiMode_t Mode, uint32_t dwConf, sXdmad *pXdmad)
	Initializes the pQspidma structure and the corresponding QSPI & DMA . hardware select value.
uint32_t	QSPID_EnableQspiRxChannel (QspiDma_t *pQspidma)
	Enables a QSPI Rx channel. This function will allocate a dma Rx channel for QSPI.
uint32_t	QSPID_EnableQspiTxChannel (QspiDma_t *pQspidma)
	Enables a QSPI Tx channel. This function will allocate a dma Tx channel for QSPI.
uint32_t	QSPID_EnableSpiChannel (QspiDma_t *pQspidma)
	Enables a QSPI SPI Rx channel. This function will allocate a dma Rx channel for QSPI SPI mode.
uint32_t	QSPID_DisableQspiRxChannel (QspiDma_t *pQspidma)
	Disables a QSPI Rx channel. This function will de-allocate previous allocated dma Rx channel for QSPI.
uint32_t	QSPID_DisableQspiTxChannel (QspiDma_t *pQspidma)
	Disables a QSPI Tx channel. This function will de-allocate previous allocated dma Tx channel for QSPI.
uint32_t	QSPID_DisableSpiChannel (QspiDma_t *pQspidma)
	Disables a QSPI SPI Rx and Tx channels. This function will de-allocate privious allocated dma Rx, Txchannel for QSPI in SPI mode.
uint32_t	QSPID_ReadWriteQSPI (QspiDma_t *pQspidma, Access_t const ReadWrite)
	Starts a QSPI read or write operation.
uint32_t	QSPID_ReadWriteSPI (QspiDma_t *pQspidma, Access_t const ReadWrite)
	Starts a SPI master transfer. This is a non blocking function. It will return as soon as the transfer is started.
uint32_t	QSPID_IsBusy (volatile uint8_t *QspiSemaphore)
	Check if the QSPI driver is busy.

Detailed Description

Implementation for the SPI Flash with xDMA driver.

Macro Definition Documentation

DMA_QSPI_LLI

#define DMA_QSPI_LLI   2

xDMA support xDMA Link List size for SPI transmission

Function Documentation

QSPID_Configure()

uint32_t QSPID_Configure	(	QspiDma_t *	pQspidma,
		QspiMode_t	Mode,
		uint32_t	dwConf,
		sXdmad *	pXdmad
	)

Initializes the pQspidma structure and the corresponding QSPI & DMA . hardware select value.

Parameters

pQspidma	Pointer to a QspiDma_t instance.
Mode	Associated SPI peripheral.
dwConf	QSPI peripheral configuration.
pXdmad	Pointer to a Xdmad instance.

QSPID_DisableQspiRxChannel()

uint32_t QSPID_DisableQspiRxChannel

(

QspiDma_t *

pQspidma

)

Disables a QSPI Rx channel. This function will de-allocate previous allocated dma Rx channel for QSPI.

Parameters

pQspidma

Pointer to a Spid instance.

Returns

0 if the transfer has been started successfully; otherwise returns QSPID_ERROR_LOCK is the driver is in use, or QSPID_ERROR if the command is not valid.

QSPID_DisableQspiTxChannel()

uint32_t QSPID_DisableQspiTxChannel

(

QspiDma_t *

pQspidma

)

Disables a QSPI Tx channel. This function will de-allocate previous allocated dma Tx channel for QSPI.

Parameters

pQspidma

Pointer to a Spid instance.

Returns

0 if the transfer has been started successfully; otherwise returns QSPID_ERROR_LOCK is the driver is in use, or QSPID_ERROR if the command is not valid.

QSPID_DisableSpiChannel()

uint32_t QSPID_DisableSpiChannel

(

QspiDma_t *

pQspidma

)

Disables a QSPI SPI Rx and Tx channels. This function will de-allocate privious allocated dma Rx, Txchannel for QSPI in SPI mode.

Parameters

pQspidma

Pointer to a Spid instance.

Returns

0 if the transfer has been started successfully; otherwise returns QSPID_ERROR_LOCK is the driver is in use, or QSPID_ERROR if the command is not valid.

QSPID_EnableQspiRxChannel()

uint32_t QSPID_EnableQspiRxChannel

(

QspiDma_t *

pQspidma

)

Enables a QSPI Rx channel. This function will allocate a dma Rx channel for QSPI.

Parameters

pQspidma

Pointer to a Spid instance.

Returns

0 if the transfer has been started successfully; otherwise returns QSPID_ERROR_LOCK is the driver is in use, or QSPID_ERROR if the command is not valid.

QSPID_EnableQspiTxChannel()

uint32_t QSPID_EnableQspiTxChannel

(

QspiDma_t *

pQspidma

)

Enables a QSPI Tx channel. This function will allocate a dma Tx channel for QSPI.

Parameters

pQspidma

Pointer to a Spid instance.

Returns

0 if the transfer has been started successfully; otherwise returns QSPID_ERROR_LOCK is the driver is in use, or QSPID_ERROR if the command is not valid.

QSPID_EnableSpiChannel()

uint32_t QSPID_EnableSpiChannel

(

QspiDma_t *

pQspidma

)

Enables a QSPI SPI Rx channel. This function will allocate a dma Rx channel for QSPI SPI mode.

Parameters

pQspidma

Pointer to a Spid instance.

Returns

0 if the transfer has been started successfully; otherwise returns QSPID_ERROR_LOCK is the driver is in use, or QSPID_ERROR if the command is not valid.

QSPID_IsBusy()

uint32_t QSPID_IsBusy

(

volatile uint8_t *

QspiSemaphore

)

Check if the QSPI driver is busy.

Parameters

pSpid

Pointer to a Spid instance.

Returns

1 if the SPI driver is currently busy executing a command; otherwise

QSPID_ReadWriteQSPI()

uint32_t QSPID_ReadWriteQSPI	(	QspiDma_t *	pQspidma,
		Access_t const	ReadWrite
	)

Starts a QSPI read or write operation.

Parameters

pQspidma	Pointer to a Qspid instance.
ReadWrite	Defines the memory access type

Returns

0 if the transfer has been started successfully; otherwise returns QSPID_ERROR_LOCK is the driver is in use, or QSPID_ERROR if the command is not valid.

QSPID_ReadWriteSPI()

uint32_t QSPID_ReadWriteSPI	(	QspiDma_t *	pQspidma,
		Access_t const	ReadWrite
	)

Starts a SPI master transfer. This is a non blocking function. It will return as soon as the transfer is started.

Parameters

pSpid	Pointer to a Spid instance.
pCommand	Pointer to the SPI command to execute.

Returns

0 if the transfer has been started successfully; otherwise returns SPID_ERROR_LOCK is the driver is in use, or SPID_ERROR if the command is not valid.