xcsudma_polled_example.c File Reference

Overview

This file contains an example using the XCsuDma driver in polled mode.

This function works in loop back mode and tests whether transfer of data is completed properly or not.

MODIFICATION HISTORY:

Ver   Who     Date     Changes



1.0   vnsld   22/10/14 First release
1.4   adk     04/12/17 Added support for PMC DMA.
1.14  adk     04/05/23 Added support for system device-tree flow.

Macros
#define	CSU_SSS_CONFIG_OFFSET   0x008
	CSU SSS_CFG Offset. More...
#define	CSUDMA_LOOPBACK_CFG   0x00000050
	LOOP BACK configuration macro. More...
#define	PMC_SSS_CONFIG_OFFSET   0x500
	CSU SSS_CFG Offset. More...
#define	PMCDMA0_LOOPBACK_CFG   0x0000000D
	LOOP BACK configuration macro for PMCDMA0. More...
#define	PMCDMA1_LOOPBACK_CFG   0x00000090
	LOOP BACK configuration macro for PMCDMA1. More...
#define	SIZE   0x100
	Size of the data to be transfered. More...

Functions
u32 SrcBuf[SIZE]	__attribute__ ((aligned(64)))
	Destination buffer. More...
int	XCsuDma_PolledExample (u16 DeviceId)
	This function performs data transfer in loop back mode in polled mode and verify the data. More...
int	main (void)
	Main function to call the example. More...

Variables
XCsuDma	CsuDma
	Instance of the Csu_Dma Device. More...

Macro Definition Documentation

#define CSU_SSS_CONFIG_OFFSET   0x008

CSU SSS_CFG Offset.

Referenced by XCsuDma_PolledExample().

#define CSUDMA_LOOPBACK_CFG   0x00000050

LOOP BACK configuration macro.

Referenced by XCsuDma_PolledExample().

#define PMC_SSS_CONFIG_OFFSET   0x500

CSU SSS_CFG Offset.

Referenced by XCsuDma_PolledExample().

#define PMCDMA0_LOOPBACK_CFG   0x0000000D

LOOP BACK configuration macro for PMCDMA0.

Referenced by XCsuDma_PolledExample().

#define PMCDMA1_LOOPBACK_CFG   0x00000090

LOOP BACK configuration macro for PMCDMA1.

Referenced by XCsuDma_PolledExample().

#define SIZE   0x100

Size of the data to be transfered.

Referenced by XCsuDma_PolledExample().

Function Documentation

u32 SrcBuf [SIZE] __attribute__

(

(aligned(64))

)

Destination buffer.

Source buffer.

int main

(

void

)

Main function to call the example.

Returns

• XST_SUCCESS if successful.
• XST_FAILURE if failed.

Note

None.

int XCsuDma_PolledExample

(

u16

DeviceId

)

This function performs data transfer in loop back mode in polled mode and verify the data.

Parameters

DeviceId

is the XPAR_<CSUDMA Instance>_DEVICE_ID value from xparameters.h.

Returns

• XST_SUCCESS if successful.
• XST_FAILURE if failed.

Note

None.

References XCsuDma_Config::BaseAddress, CSU_SSS_CONFIG_OFFSET, CSUDMA_LOOPBACK_CFG, XCsuDma_Config::DmaType, PMC_SSS_CONFIG_OFFSET, PMCDMA0_LOOPBACK_CFG, PMCDMA1_LOOPBACK_CFG, SIZE, XCsuDma_CfgInitialize(), XCSUDMA_DMATYPEIS_CSUDMA, XCSUDMA_DMATYPEIS_PMCDMA0, XCSUDMA_DST_CHANNEL, XCsuDma_IntrClear(), XCSUDMA_IXR_DONE_MASK, XCsuDma_LookupConfig(), XCsuDma_SelfTest(), XCSUDMA_SRC_CHANNEL, XCsuDma_Transfer(), and XCsuDma_WaitForDone.

Variable Documentation

XCsuDma CsuDma

Instance of the Csu_Dma Device.