xspi_polled_example.c File Reference

Overview

This file contains a design example using the Spi driver (XSpi) and the Spi device using the polled mode.

To put the driver in polled mode the Global Interrupt must be disabled after the Spi is Initialized and Spi driver is started.

This example works with a PPC/MicroBlaze processor.

Note

None.

  MODIFICATION HISTORY:

  Ver   Who  Date     Changes



  1.00a sdm  03/03/08 First Release
  3.00a ktn  10/28/09 Converted all register accesses to 32 bit access.
                      Updated to use the HAL APIs/macros. Replaced call to
                      XSpi_Initialize API with XSpi_LookupConfig and
                      XSpi_CfgInitialize.
  3.02a sdm  05/04/11 Updated to run the loopback test only in standard spi
                      mode.
  4.2   ms   01/23/17 Added 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.
  4.11  sb   07/11/23 Added support for system device-tree flow.
*

Functions
int	SpiPolledExample (XSpi *SpiInstancePtr, u16 SpiDeviceId)
	This function does a minimal test on the Spi device and driver as a design example. More...
int	main (void)
	Main function to call the Spi Polled example. More...

Function Documentation

int main

(

void

)

Main function to call the Spi Polled example.

Returns

XST_SUCCESS if successful, otherwise XST_FAILURE.

Note

None

References SpiPolledExample().

int SpiPolledExample	(	XSpi *	SpiInstancePtr,
		u16	SpiDeviceId
	)

This function does a minimal test on the Spi device and driver as a design example.

The purpose of this function is to illustrate how to use the XSpi component using the polled mode.

This function sends data and expects to receive the same data.

Parameters

SpiInstancePtr	is a pointer to the instance of Spi component.
SpiDeviceId	is the Device ID of the Spi Device and is the XPAR_<SPI_instance>_DEVICE_ID value from xparameters.h.

Returns

XST_SUCCESS if successful, otherwise XST_FAILURE.

Note

This function contains an infinite loop such that if the Spi device is not working it may never return.

References XSpi_Config::BaseAddress, XSpi::SpiMode, XSP_MASTER_OPTION, XSpi_CfgInitialize(), XSpi_IntrGlobalDisable, XSpi_LookupConfig(), XSpi_SelfTest(), XSpi_SetOptions(), XSpi_Start(), and XSpi_Transfer().

Referenced by main().