SPIFFS读写数据测试写入文本会覆盖原数据，追加文本会在原数据后追加数据，数据添加可以选择是否换行Serial9600/fileName.txt2/fileName.txthello worldTRUE2/fileName.txthello worldTRUESerialprintln/fileName.txt/fileName.txt{"PSRAM":"disabled","PartitionScheme":"default","CPUFreq":"240","FlashMode":"qio","FlashFreq":"80","FlashSize":"4M","UploadSpeed":"921600","LoopCore":"1","EventsCore":"1"}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