/* flow control */
int ftdi_setflowctrl(struct ftdi_context *ftdi, int flowctrl);
+ int ftdi_setflowctrl_xonxoff(struct ftdi_context *ftdi, unsigned char xon, unsigned char xoff);
int ftdi_setdtr_rts(struct ftdi_context *ftdi, int dtr, int rts);
int ftdi_setdtr(struct ftdi_context *ftdi, int state);
int ftdi_setrts(struct ftdi_context *ftdi, int state);