BMP 8/16/24/32 bits to C Code converter. Tested on SSD1306 library. (Tested on Wemos + OLED Shield 64x48 - 0.66 inch)
Example output from Example file
/* res: 12 x 12 */
PROGMEM const char loading [] = {
0x00, 0x00, 0x00, 0x00, 0x07, 0x0E, 0x09, 0x09, 0x91, 0x08, 0x61, 0x0C, 0x61, 0x0C, 0x91, 0x08,
0x09, 0x09, 0x07, 0x0E, 0x00, 0x00, 0x00, 0x00,
}
To display the image in the SD1306 OLED just use like the following command.
#include <SSD1306.h> // OLED library by Daniel Eichhorn
SSD1306 display(0x3c, D2, D1); // Initialize OLED Shield 0.66in
...
display.drawFastImage(86, 18, 12, 12, loading);
...
This will position the image on the top right corner of the OLED Screen.