Image2lcd Register Code -

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

Monochrome page-wise (SSD1306-like):

for page in 0..(height/8 -1):
  set_page_address(page)         // command sequence
  set_column_address(0)
  for col in 0..width-1:
    data = pack_vertical_8pixels(x=col, page)
    write_data_register(data)

HD44780 custom char:

for char_index in 0..n-1:
  set_cgram_address(char_index * 8)
  for row in 0..7:
    write_data(cgram_bitmap[char_index][row])

ILI9341 RGB565 stream:

set_column_address(x0, x1)
set_page_address(y0, y1)
start_memory_write()
for y in y0..y1:
  for x in x0..x1:
    write_data16(rgb565(pixels[x,y]))

A typical register code output looks like this: image2lcd register code

// Generated by Image2LCD v5.0
// Width: 128, Height: 64, Color Bits: 1
0x00,0xAF,0x00,0xAE,0x40,0x00,0x80,0xFF...

Here’s the breakdown:

Scenario: You have a 2.8" TFT (320x240) powered by an STM32F103. You want a full-color logo displayed in under 50ms.

  • Generated size: 320 * 240 * 2 bytes = 153,600 bytes + ~30 bytes of init commands. Monochrome page-wise (SSD1306-like): for page in 0

  • Driver optimization:

    // Direct SPI DMA burst
    HAL_SPI_Transmit_DMA(&hspi1, (uint8_t*)gImage_logo, sizeof(gImage_logo));
    
  • Result: The TFT fills with the logo in ~15ms, consuming almost zero CPU.


  • The Image2LCD register code feature is a hidden gem for embedded engineers. It transforms the tedious task of manual LCD initialization and image rendering into an automated, efficient process. By understanding the prefix-based command/data structure, writing a simple interpreter function, and optimizing for DMA, you can achieve professional-grade splash screens and menus on even the smallest microcontrollers. HD44780 custom char: for char_index in 0