DEPRECATED int pcf8574_get_1(Pcf8574 *pcf);
DEPRECATED bool pcf8574_put_2(Pcf8574 *pcf, uint8_t data);
DEPRECATED bool pcf8574_init_2(Pcf8574 *pcf, pcf8574_addr addr);
DEPRECATED int pcf8574_get_1(Pcf8574 *pcf);
DEPRECATED bool pcf8574_put_2(Pcf8574 *pcf, uint8_t data);
DEPRECATED bool pcf8574_init_2(Pcf8574 *pcf, pcf8574_addr addr);