uFileSystem read/write

[neil]

Hi Mark,
  I would like to read/write to the uFileSystem using atmel exernal memory, is it possible to overwrite parts of the file?

Thanks
Neil

[mark]

Hi Neil

The uFileSystem interface doesn't allow overwriting parts of a file. It is necessary to write the complete file again with the changes (this first automatically deleted the file before writing the new content). If you have space, you can use two files - write the new contant to the second file and then deleted the original one (reversing the sequence each time) - this ensures that you can't lose content of there is a crash or power-cycle during the process.

Regards

Mark