SmartGPU2-LCD480X320Touch-CommandSet

SMART GPU 2 3.5” TOUCH
Command Set
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2.4 Text/String Commands
The SMART GPU 2 is capable of generate 13 different sizes of fonts, with
transparent or colour background, font type is Helvetica Neue.
The command Display String requires two points that forms an imaginary text
box that helps delimit the text writing to certain area; it is helpful when the user only
wants to display text only on some area of the screen.
Smart GPU 2 can also manage text files, so any file with .txt extension can be
easily opened and displayed with selected size and colour.
A maximum of 32GBs micro SD memory card is supported, allowing storing
thousands of text files.
Briefly Summary of Commands in this section:
*All of Those next commands always begin with the byte ‘S’-53hex, as
they are String commands, followed by the next parameters/bytes.
• Put Letter – 4Chex ‘L’
• Print Number – 4Ehex ‘N’
• Display String – 53hex ‘S’
• Display String SD – 46hex ‘F’
• Strings Configuration – 43hex ‘C’
The colour parameter needed on all those commands, consist of 16bits (2 bytes) RGB565:
R4R3R2R1R0G5G4G3 G2G1G0B4B3B2B1B0
That is:
5bits for red, 6 bits for green, 5bits for blue.
High byte colour: R4R3R2R1R0G5G4G3
Low byte colour: G2G1G0B4B3B2B1B0