   arglen[CMD_kcup_count] = 0;
   arglen[CMD_brew] = 0;
   arglen[CMD_addin_insert] = 2;
+
+  mug_seek(0);
 }
 
 int main() {

  }

  if (serial_buffer[0] == CMD_HEADER_B && serial_index > 1) {
    if (serial_index > 1 + arglen[serial_buffer[1]]) {
      int res;
      switch (serial_buffer[1]) {
      case CMD_mug_seek:
	// int
	res = mug_seek(serial_buffer[2]);
	break;
      case CMD_mug_get:
	res = mug_get();
	break;
      case CMD_kcup_tray_open:
	res = kcup_tray_open();
	break;
      case CMD_kcup_tray_close:
	res = kcup_tray_close();
	break;
      case CMD_kcup_load:


int arglen[256] = {};

#define TRAY_OPEN 0
#define TRAY_CLOSED 1

#define LOADER_REST 1
#define LOADER_ACTIVE 0
