Method wipe

libraries/FRAM_I2C/FRAM_RINGBUFFER.cpp:167–181

void FRAM_RINGBUFFER::wipe()
{
  uint32_t pos = _start - 20;       //  also overwrite metadata
  while (pos < _start + _size - 4)  //  prevent writing adjacent FRAM
  {
    _fram->write32(pos, 0xFFFFFFFF);
    pos += 4;
  }
  while (pos < _start + _size)      //  if _size not a multiple of 4.
  {
    _fram->write8(pos, 0xFF);
    pos++;
  }
  flush();  //  reset internal variables too.
}