SD library problem in IDE v1.0 beta-3

Development Suggestions for the Arduino Project
1

A little error seems to have cropped up in the latest beta IDE. In any sketch which uses the SD library, I get the following message:

C:\Users\Tim\Documents\Arduino\ide\v10b3\libraries\SD\File.cpp: In member function 'virtual size_t File::write(const uint8_t*, size_t)':
C:\Users\Tim\Documents\Arduino\ide\v10b3\libraries\SD\File.cpp:77: error: 'class SdFile' has no member named 'writeError'

This happens even with the example sketches. Everything is fine with v1.0 beta-2, yet as far as I can see the SD library hasn't changed. Any ideas?

2

I took a short look at the code. The declaration for writeError is in
/libraries/SD/utility/SDFat.h

If you want to check, look for this. Line 44 in v0022:

class SdFile : public Print {
public:
/** Create an instance of SdFile. /
SdFile(void) : type_(FAT_FILE_TYPE_CLOSED) {}
/*

  • writeError is set to true if an error occurs during a write().
  • Set writeError to false before calling print() and/or write() and check
  • for true after calls to print() and/or write().
    */
    bool writeError;

You might want to look there and see if something has changed.

3

David Mellis is aware of this.

You can comment out the following code at about line 77 of arduino-1.0-beta3/libraries/SD/File.cpp

/*
  if (_file->writeError()) {
    setWriteError();
    return 0;
  }
*/

The error handling was moved to the write call but his code was not removed.

4

I think you just want to change writeError() to getWriteError(), not comment out the code.

5

OK, glad to hear it's a known problem. IDE 1.0 is a big improvement over v0022 and I've been using it as much as possible. Looking forward to the next beta-version.

6

Changing writeError() to getWriteError() or commenting out the block will give identical results.

The call to SdFat::write() above the block calls setWriteError() and returns zero.