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Filesystem demo 1.0
 
File system test

Code size:6 Kb Author:yrt
Source files included:yes Version:1.0
Use circleOS:yes (4.6) Creation date:2013-07-26 15:52:21
Hardware modification:no Modification date:2013-07-26 16:33:17
Based on the STM32 Primer:All
   
Downloads:320 Views:20016
   
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Average ratings:0/5 (0 rates)

Download:    Filesystem-demo-1.0.zip (18 KB)

Description:

 

Filesystem demonstration

Introduction :

This application shows how to implement the new CircleOS API to manage files with the new FatFS file sytem :

  • copy files,
  • compares files,
  • gest the file size,
  • cheks the end of file,
  • gets strings....

The application also shows how to use the "UTIL_SaveScreenBMP" API function, in order to create screenshots on the SD Card in BMP format file.

Project:

The project contains one application by platform, sharing the same source file (application.c), that allows to program and debug all corresponding platforms:

  • Primer2,
  • EvoPrimer STM32E,
  • EvoPrimer STM32G,
  • EvoPrimer STM32C,
  • EvoPrimer STM32L,
  • EvoPrimer STM3240G.

Select your platform by clicking on the corresponding application in the project tree, then clik on mouse right button and choose "Set as Startup application".

 

Application:

The application calls alternatively two procedures : CopyTest (copy file), and ReadWriteTest (write read and display infos).


Copy files :

The application copies periodically a file, displays the size of the destination file, thanks to the API functions :

  • FS_FileCopy(),
  • FS_FileCmp(),
  • FS_OpenFile(),
  • FS_Size(),
  • FS_Close().

 

 Default values : source file = "Original.txt", destination file = "Copy.bak", size : 362 bytes.

Read and write file:

The application writes and reads periodically into a file:

  • writes a block of 100 characters into the file,
  • tests the end of the file,
  • reads back the block,
  • compares the read block versus the written block,
  • moves to the precedent block in the file,
  • reads a string,
  • moves to the next block,
  • repeats for 100 blocks,
  • finally displays the size of the file.

This is done thanks to the API functions :

  • FS_OpenFile(),
  • FS_Close(),
  • FS_WriteFile(),
  • FS_Tell(),
  • FS_Seek(),
  • FS_Eof(),
  • FS_ReadFile(),
  • FS_Gets(),
  • FS_Size().

Default configuration :  Default values :  "FileTest.txt", size : 10000 bytes.

Push the button to stop.

  Notes :  

  • The "Evo_Circle_STM32x.elf", "FAT.elf" and "FAT_OP4.elf" files location depends on your Ride installation; delete them from the projet and add it back before building the project.
  • This example runs on all platforms that have an SD Card port : Primer2 and EvoPrimer.
  • The screenshots have been made thanks to the "UTIL_SaveScreenBMP" API function.
  • For more information about the FS API's, see :   Circle OS Conception document

Version V1.0

  • First release


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