xaxicdma_example_simple_intr.c File Reference

Overview

This file demonstrates how to use the xaxicdma driver on the Xilinx AXI CDMA core (AXICDMA) to transfer packets in simple transfer mode through interrupt.

Modify the NUMBER_OF_TRANSFER constant to have different number of simple transfers done in this test.

This example assumes that the system has an interrupt controller.

To see the debug print, you need a Uart16550 or uartlite in your system, and please set "-DDEBUG" in your compiler options for the example, also comment out the "#undef DEBUG" in xdebug.h. You need to rebuild your software executable.

MODIFICATION HISTORY:

 . Updated the debug print on type casting to avoid warnings on u32. Cast
   u32 to (unsigned int) to use the x format.

Ver   Who  Date     Changes



1.00a jz   07/30/10 First release
2.01a rkv  01/28/11 Changed function prototype of XAxiCdma_SimpleIntrExample
                       to a function taking arguments interrupt instance,device
                       instance,device id,device interrupt id
               Added interrupt support for Cortex A9
2.01a srt  03/05/12 Modified interrupt support for Zynq.
                       Modified Flushing and Invalidation of Caches to fix CRs
               648103, 648701.
4.3   ms   01/22/17 Modified xil_printf statement in main function to
           ensure that "Successfully ran" and "Failed" strings are
           available in all examples. This is a fix for CR-965028.
      ms   04/05/17 Modified Comment lines in functions to
                    recognize it as documentation block for doxygen
                    generation of examples.
4.4   rsp  02/22/18 Support data buffers above 4GB.Use UINTPTR for
                    typecasting buffer address(CR-995116).
4.6   rsp  09/13/19 Add error prints for failing scenarios.
                    Fix cache maintenance ops for source and dest buffer.
4.7   rsp  12/06/19 For aarch64 include xil_mmu.h. Fixes gcc warning.
4.8      sk   09/28/20 Fix the compilation error for xreg_cortexa9.h
                       preprocessor on R5 processor.
4.11  sa   09/29/22 Fix infinite loops in the example.

Functions
int	XAxiCdma_SimpleIntrExample (XScuGic *IntcInstancePtr, XAxiCdma *InstancePtr, u16 DeviceId, u32 IntrId)
	The example to do the simple transfer through interrupt. More...
int	main ()
	The entry point for this example. More...

Function Documentation

int main

(

void

)

The entry point for this example.

It invokes the example function, and reports the execution status.

Parameters

None.

Returns

• XST_SUCCESS if example finishes successfully
• XST_FAILURE if example fails.

Note

None

References XAxiCdma_SimpleIntrExample().

int XAxiCdma_SimpleIntrExample	(	XScuGic *	IntcInstancePtr,
		XAxiCdma *	InstancePtr,
		u16	DeviceId,
		u32	IntrId
	)

The example to do the simple transfer through interrupt.

Parameters

IntcInstancePtr	is a pointer to the INTC instance
InstancePtr	is a pointer to the XAxiCdma instance
DeviceId	is the Device Id of the XAxiCdma instance
IntrId	is the interrupt Id for the XAxiCdma instance in build

Returns

• XST_SUCCESS if example finishes successfully
• XST_FAILURE if error occurs

Note

If the hardware build has problems with interrupt, then this function hangs

References XAxiCdma_CfgInitialize(), XAxiCdma_IntrEnable(), XAxiCdma_IntrHandler(), XAxiCdma_LookupConfig(), and XAXICDMA_XR_IRQ_ALL_MASK.

Referenced by main().