TftBmpFromSdRaw() | TFT & EPD Graphic Library 2

Syntax

TftBmpFromSdRaw(wX_Pos As Word, wY_Pos As Word, dwStartSector As Dword), Byte

Parameters

Parameter	Description
wX_Pos	X-position for the lower-left corner of the image to print
wY_Pos	Y-position for the lower-left corner of the image to print
dwStartSector	File start sector (zero-based) in the SD card memory

Return value

Value	Meaning
255	No errors detected
Else	Errors detected

Overview

This procedure prints a BMP file directly from an SD card without using a file system.

It is much faster for displaying images (e.g., buttons, backgrounds) than using an SD card formatted with FAT32.
As a result, menu or button transitions will appear smoother. There is no need to initialize the SD card.

Example

TftBmpFromSdRaw(20,30,8)

Notes

The BMP file must be:
Smaller than the screen’s width and height
16-bit RGB (565) color depth
Stored with bottom-to-top row direction (default)
Not compressed

You can convert files using various tools, such as: Online BMP Converter.

Simply select the correct format, upload the file, wait for the conversion, and download the result.

Alternatively, you can use the included library tool, SdCardWriteRGB565, to convert and upload files.

$define Button 8 '0,85,33,8,19,Button.bmp

$define Dog 20 '1,320,240,20,320,Dog.jpg

$define Cat 321 '2,320,240,321,621,Cat.jpg

TftSetUp(0, 0)

TftBmpFromSdRaw(0,0,Cat)

DelayMS 1000

TftBmpFromSdRaw(0,0,Dog)

DelayMS 1000

TftBmpFromSdRaw(73,85,Button)

TftBmpFromSdRaw(130,165,Button)

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