serial_lcd

const (
	// All commands start with the COMMAND byte.
	COMMAND = 0xFE

	// ---------------------------------------------------------------
	// Basic commands:
	BACKLIGHT_ON  = 0x42 // Turns the backlight on.  expect extra arg that is ignored.
	BACKLIGHT_OFF = 0x46 // Turns the backlight off.
	BRIGHTNESS    = 0x99 // Set brightness: expects arg for brightness 0-255
	CONTRAST      = 0x91 // Set contrast: expects arg for contrast 0-255
	CLEAR         = 0x58 // Clear the display.

	// This will make it so when text is received and there's no more space on
	// the display, the text will automatically 'scroll' so the second line
	// becomes the first line, etc. and new text is always at the bottom of the
	// display.
	AUTOSCROLL_ON = 0x51
	// This will make it so when text is received and there's no more space on
	// the display, the text will wrap around to start at the top of the
	// display.
	AUTOSCROLL_OFF = 0x52

	// after sending this command, write up to 32 characters (for 16x2) or up to
	// 80 characters (for 20x4) that will appear as the splash screen during
	// startup. If you don't want a splash screen, write a bunch of spaces.
	SET_STARTUP_SPLASH = 0x40

	// set the position of text entry cursor. Column and row numbering starts
	// with 1 so the first position in the very top left is (1, 1)
	SET_CURSOR_POSITION = 0x47
	// place the cursor at location (1, 1)
	GO_HOME = 0x48
	// move cursor back one space, if at location (1,1) it will 'wrap' to the
	// last position.
	CURSOR_BACK = 0x4C
	// move cursor back one space, if at the last location location it will
	// 'wrap' to the (1,1) position.
	CURSOR_FORWARD = 0x4D
	// turn on the underline cursor
	UNDERLINE_CURSOR_ON = UnderlineCursorState(0x4A)
	// turn off the underline cursor
	UNDERLINE_CURSOR_OFF = UnderlineCursorState(0x4B)
	// turn on the blinking block cursor
	BLOCK_CURSOR_ON = BlockCursorState(0x53)
	// turn off the blinking block cursor
	BLOCK_CURSOR_OFF = BlockCursorState(0x54)

	// Sets the backlight to the red, green and blue component colors. The
	// values of can range from 0 to 255 (one byte). This is saved to EEPROM.
	// Each color R, G, and B is represented by a byte following the command.
	// Color values range from 0 to 255. To set the backlight to Red, the
	// command is 0xFE 0xD0 0x255 0x0 0x0. Blue is 0xFE 0xD0 0x0 0x0 0x255.
	// White is 0xFE 0xD0 0x255 0x255 0x255.
	SET_RGB_BACKLIGHT_COLOR = 0xD0
	// You can configure the backpack to what size display is attached. This is
	// saved to EEPROM so you only have to do it once.Custom Characters
	SET_LCD_SIZE = 0xD1
	// this will create a custom character in spot # can be between 0 and 7 (8
	// spots). 8 bytes are sent which indicate how the character should appear
	CREATE_CUSTOM_CHARACTER = 0x4E
	// this will save the custom character to EEPROM bank for later use. There
	// are 4 banks and 8 locations per bank.
	SAVE_CUSTOM_CHARACTER_TO_EEPROM_BANK = 0xC1
	// this will load all 8 characters saved to an EEPROM bank into the LCD's
	// memoryGeneral Purpose Output
	LOAD_CUSTOM_CHARACTERS_FROM_EEPROM_BANK = 0xC0
)