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Arduino SD Card open file modes append / overwrite

Running Arduine IDE SD DataLogger Example, my data gets appended to a txt file.

File dataFile = SD.open("datalog.txt", FILE_WRITE);
if (dataFile) {
 dataFile.println(dataString);
 dataFile.close();
}

Is there an explicit option to open the file in overwrite / append modes?

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Community
– Community Bot

01/29/2025 21:34:46
Commented Jan 29 at 21:34

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