u8、u16 error: unknown type name 'u16'

../applications/lcd.c288329: error: unknown type name ‘u16’
void LCD_ShowPicture(u16 x, u16 y, u16 wide, u16 high,u8 pic)
^
make: ** [applications/subdir.mk21 applications/main.o] Error 1
make: ** Waiting for unfinished jobs….
../applications/lcd.c288336: error: unknown type name ‘u16’
void LCD_ShowPicture(u16 x, u16 y, u16 wide, u16 high,u8 pic)
^
../applications/lcd.c288346: error: unknown type name ‘u16’
void LCD_ShowPicture(u16 x, u16 y, u16 wide, u16 high,u8 *pic)
^
../applications/lcd.c288355: error: unknown type name ‘u8’