Flashing and running a program

You can compile and flash our program using the following command:

$ make flash

Make sure that the ESP32 board is connected to your computer. 

If the program has been flashed onto the ESP32 board successfully, you should see circles on the LCD. Figure 2-14 shows an example of the program:

So, we have successfully displayed circles on the LCD. Now, let's go a little further and learn to display image files on the LCD.