.. _sdram_example:

SDRAM example
==========================

Overview
--------

SDMA example project shows performance of reading and writing data in internal or external SDRAM memory.

Board Setting
-------------

No special settings

Running the example
-------------------

When the project runs correctly, and the serial port terminal will output the following information:

.. code-block:: console

   sdram example start @ 166666666
   Dcache Enabled
   Comparison test
   comparison test: from 0x40000000 to 0x42000000
   d-cached enabled and flushed
   **  comparison succeeded
   Testing SDRAM
   d-cached enabled
   read performance @0x40000000, 32768KB
   read throughput: 319576.71 KB/s
   write performance @0x40000000, 32768KB
   write throughput: 320431.43 KB/s
   Dcache Disabled
   Comparison test
   comparison test: from 0x40000000 to 0x42000000
   d-cached disabled
   **  comparison succeeded
   Testing SDRAM
   d-cached disabled
   read performance @0x40000000, 32768KB
   read throughput: 20502.65 KB/s
   write performance @0x40000000, 32768KB
   write throughput: 35664.65 KB/s
   sdram example end