-void oswald_set_time(u8t hour, u8t minute, u8t second, boolean clk24hr);
-void oswald_set_date(u8t day, u8t month, u16t year, boolean day_first);
+void oswald_set_time(uint8_t hour, uint8_t minute, uint8_t second, boolean clk24hr);
+void oswald_set_date(uint8_t day, uint8_t month, uint16_t year, boolean day_first);