Method read

Marlin/src/sd/SdBaseFile.cpp:1348–1351

* Read the next byte from a file. * * \return For success read returns the next byte in the file as an int. * If an error occurs or end of file is reached -1 is returned. */

 * If an error occurs or end of file is reached -1 is returned.
 */
int16_t SdBaseFile::read() {
  uint8_t b;
  return read(&b, 1) == 1 ? b : -1;
}

/**
 * Read data from a file starting at the current position.