nandpsu: xnandpsu_example.c File Reference

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xnandpsu_example.c File Reference

## Overview

This file contains a design example using the NAND driver (XNandPsu).

This example tests the erase, read and write features of the controller. The flash is erased and written. The data is read back and compared with the data written for correctness.

Note

None.

     MODIFICATION HISTORY:

     Ver   Who  Date        Changes

     1.0  nm   05/06/2014  First release.
          ms   04/10/17    Modified Comment lines to follow doxygen rules.
     1.4  nsk  10/04/2018  Added support for ICCARM Compiler.

## Functions
s32 | NandReadWriteExample (u16 NandDeviceId)
| This function runs a test on the NAND flash device using the basic driver functions in polled mode. More...
u8 ReadBuffer[TEST_BUF_SIZE] | __attribute__ ((aligned(64)))
| Block sized Read buffer. More...
s32 | main (void)
| Main function to execute the Nand Flash read write example. More...

## Function Documentation

u8 ReadBuffer [TEST_BUF_SIZE] __attribute__ | ( | (aligned(64)) |  | ) |

Block sized Read buffer.

Block sized write buffer.

s32 main | ( | void |  | ) |

Main function to execute the Nand Flash read write example.

Parameters

  None. |

Returns
  - XST_SUCCESS if the example has completed successfully.
  - XST_FAILURE if the example has failed.

Note
  None.

References NandReadWriteExample().

s32 NandReadWriteExample | ( | u16 | NandDeviceId | ) |

This function runs a test on the NAND flash device using the basic driver functions in polled mode.

The function does the following tasks:

- Initialize the driver.
- Erase the flash.
- Write data to the flash.
- Read back the data from the flash.
- Compare the data read against the data Written.

Parameters

  NandDeviceId | is is the XPAR_<NAND_instance>_DEVICE_ID value from xparameters.h.

Returns
  - XST_SUCCESS if successful.
  - XST_FAILURE if failed.

Note
  None

References XNandPsu_Config::BaseAddress, XNandPsu_Geometry::BytesPerPage, XNandPsu::Geometry, XNandPsu_CfgInitialize(), XNandPsu_EnableDmaMode(), XNandPsu_Erase(), XNandPsu_LookupConfig(), XNandPsu_Read(), and XNandPsu_Write().

Referenced by main().