csv_writer.cpp

#include "csv_writer.h"

namespace config {
  // Values should be defined in config.h
  uint16_t csv_interval = CSV_INTERVAL; // [s]
}
namespace csv_writer {
  unsigned long last_written_at = 0;
  String last_successful_write = "";

#if defined(ESP8266)
  /**
   * SPECIFIC FUNCTIONS FOR LITTLEFS
   */
  FSInfo fs_info;

  bool mountFS() {
    return LittleFS.begin(); // format if needed.
  }

  void updateFsInfo() {
    FS_LIB.info(fs_info);
  }

  int getTotalSpace() {
    return fs_info.totalBytes;
  }

  int getUsedSpace() {
    return fs_info.usedBytes;
  }

  void showFilesystemContent() {
    Dir dir = FS_LIB.openDir("/");
    while (dir.next()) {
      Serial.print("  ");
      Serial.print(dir.fileName());
      Serial.print(" - ");
      if (dir.fileSize()) {
        File f = dir.openFile("r");
        Serial.println(f.size());
        f.close();
      } else {
        Serial.println("0");
      }
    }
  }
#elif defined(ESP32)
  /**
   * SPECIFIC FUNCTIONS FOR SPIFFS
   */
  bool mountFS() {
    return SPIFFS.begin(true); // format if needed.
  }

  void updateFsInfo() {
    // Nothing to do.
  }

  int getTotalSpace() {
    return SPIFFS.totalBytes();
  }

  int getUsedSpace() {
    return SPIFFS.usedBytes();
  }

  void showFilesystemContent() {
    File root = SPIFFS.open("/");
    File file = root.openNextFile();