add FORWARD_RAW_TTY define to use raw output as option to forward data to a serial connection with same params as a usual bus interface

src/lib/utils/rotatefile.cpp

@@ -50,6 +50,22 @@ bool RotateFile::setEnabled(bool enabled) {
   if (enabled) {
     m_stream = fopen(m_fileName.c_str(), m_textMode ? "w" : "wb");
     m_fileSize = 0;
+#ifdef FORWARD_RAW_TTY
+    if (!m_textMode && isatty(fileno(m_stream)) == 1) {
+      int fd = fileno(m_stream);
+      struct termios newSettings;
+      memset(&newSettings, 0, sizeof(newSettings));
+
+      cfsetspeed(&newSettings, B2400);
+      newSettings.c_cflag |= (CS8 | CLOCAL);
+      newSettings.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);  // non-canonical mode
+      newSettings.c_iflag |= IGNPAR;  // ignore parity errors
+      newSettings.c_oflag &= ~OPOST;
+
+      // activate new settings of serial device
+      tcsetattr(fd, TCSANOW, &newSettings);
+    }
+#endif
   }
   return true;
 }