Image2lcd Register Code

For an ILI9341 (240x320, SPI, 16-bit RGB565), the tool might produce:

// ILI9341 Initialization Commands
// Format: command, data_length, data_bytes...
const uint8_t ili9341_init_cmds[] = 
    0x01, 0x00,           // Software Reset
    0x11, 0x00, 0x80,     // Sleep Out + delay 80ms
    0x36, 0x01, 0x48,     // Memory Access Control (MX/MY/BGR)
    0x3A, 0x01, 0x55,     // Pixel Format Set = 16-bit RGB565
    0x2A, 0x04, 0x00, 0x00, 0x01, 0x3F,  // Column Address Set
    0x2B, 0x04, 0x00, 0x00, 0x01, 0x3F,  // Page Address Set
    0x29, 0x00,           // Display ON
    0x2C, 0x00            // Memory Write (ready for pixel data)
;

Sometimes the tool adds delay fields, e.g.:

0x11, 0, 120,   // Exit sleep, 120ms delay

Send the commands via SPI/I8080:

void lcd_send_cmd(uint8_t cmd) 
    // set C/D low, send cmd
void lcd_send_data(uint8_t data) 
    // set C/D high, send data
void lcd_init(void) 
uint8_t *ptr = ili9341_init_cmds;
while (*ptr != 0xFF)  // assume terminator
uint8_t cmd = *ptr++;
uint8_t len = *ptr++;
lcd_send_cmd(cmd);
for (uint8_t i = 0; i < len; i++) 
lcd_send_data(*ptr++);
// optional delay handling

When interfacing a microcontroller (e.g., STM32, ESP32, Arduino) with a graphical LCD, you need two things:

Tools like Image2LCD help generate both the register initialization code and the image data array. image2lcd register code

Image2LCD generates a generic initialization. If your text appears backward or upside down, look for the Memory Access Control register in the generated code (often 0x36 for ILI9341/ST7789).

Generating the code is half the battle. You need a function to interpret and send it to your LCD via SPI, I2C, or parallel bus. For an ILI9341 (240x320, SPI, 16-bit RGB565), the