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Filesystem demo 1.0
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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 |
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Downloads: | 2365 |
Views: | 33421 |
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Vote: |
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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
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