While Image2LCD is the established standard, developers seeking cross-platform or open-source solutions may consider alternatives.
void LCD_DrawImage(uint16_t x, uint16_t y, uint16_t width, uint16_t height, const unsigned char* image_arr) uint32_t i = 0; uint32_t total_pixels = width * height; // Set the display register boundaries LCD_SetAddressWindow(x, y, x + width - 1, y + height - 1); // Loop through the Image2Lcd array // Assuming 16-bit RGB565 color (2 bytes per pixel) for (i = 0; i < total_pixels; i++) // Extract high byte and low byte from Image2Lcd format uint8_t high_byte = image_arr[i * 2]; uint8_t low_byte = image_arr[i * 2 + 1]; // Write directly to the LCD data register LCD_WriteData(high_byte); LCD_WriteData(low_byte); Use code with caution. Troubleshooting Common Register Misalignments
// ST7735 register configuration example (pseudocode) ST7735_WriteCommand(0x36); // MADCTL ST7735_WriteData(0xC0); // MX=1, MY=1, RGB=0 => proper orientation
// Saved as 16-bit RGB565, Top-to-Bottom, Left-to-Right scan const unsigned char gImage_logo[460800] = 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x1F, 0x00, // Raw pixel data // ... thousands of lines of hex data depending on image size ; Use code with caution. 2. Writing the Register Configuration Code image2lcd register code
// Generated by Image2LCD v5.0 // Width: 128, Height: 64, Color Bits: 1 0x00,0xAF,0x00,0xAE,0x40,0x00,0x80,0xFF...
Its core value proposition is simple: transform a visual image into a static, deterministic byte sequence embedded directly into MCU flash memory that the hardware's LCD controller can understand.
: Click Save to generate the text file containing the pixel data, then copy the array into your IDE (like Arduino IDE) to display the image [2]. : Click Save to generate the text file
TFT_eSPI tft = TFT_eSPI();
The most common mistake is assuming that because an image displays correctly on one LCD, the same settings will work on another. Each LCD controller has unique register defaults, and your Image2LCD settings must be recalibrated for each new hardware target.
Enter the exact resolution of your target display (e.g., 240x320 or 128x64). The "Include Head Data" Option Color Bits: 1 0x00
(like Scan Mode or Bits per Pixel) for your particular LCD or e-Paper display?
, the standard registration code used to activate the Image2LCD software is: 0000-0000-0000-0000-6A3B How to Use the Code Install the Software installation file found in your downloaded package. Open the App : Launch Image2LCD after installation is complete. : Click the "Register"
Bytes 2 and 3 store the image width in little-endian format (low byte first). Bytes 4 and 5 store the height similarly.
Understanding and Implementing Image2Lcd Register Code for Embedded Displays
A typical register code output looks like this: