SmartGPU2-LCD480X320Touch-CommandSet

SMART GPU 2 3.5” TOUCH

Command Set

2.4.3 Display String – 53hex - S ascii

Commands (host)

10 bytes + string + 1byte(NULL)

1.- 0x53 (hex), S (ascii). *String Command.

2.- 0x53 (hex), S (ascii).

3.- X1 coord high byte.

4.- X1 coord low byte.

5.- Y1 coord high byte.

6.- Y1 coord low byte.

7.- X2 coord high byte.

8.- X2 coord low byte.

9.- Y2 coord high byte.

10.- Y2 coord low byte.

11 up to N.- string text (hex) ascii equivalent.

N+1.- 0x00 (hex) NULL ascii.

Responses (device)

SPC(2 bytes) + 1 byte ACK

1.- SPC high byte

2.- SPC low byte

3.- 0x4F (hex), O (ascii) – success ACK.

0x46 (hex), F (ascii) – fail NAK.

*SPC stands for Successfully Printed Chars.

Description

This command displays a string on the screen on an

imaginary text box, with the given points: X1(16bit),

Y1(16bit) as top left corner, and X2(16bit), Y2(16bit) as

bottom right corner.

The text or string is automatically adjusted to fit in this

defined text box, if the text is longer to fit in the text box,

it will stop discarding all the rest of the String. The

command always return the SPC(successfully printed

bytes), this way user can determine how many of the

chars fitted and were printed on the received text box.

The maximum size of string to receive in one same

call is 5000 bytes + NULL character. The host must

always send the NULL(0x00 hex) character after the

string to indicate end of string.

Text size, text colour, text background colour, and

filled of unfilled background must be set with the

Strings Config Command, Default are Size 0, White

text colour, Black background colour and unfilled

background.

Colour format is the same RGB565.