Nuvoton has license emWin library from Segger. It is really simple to use API of emWin to develop human machine interface(HMI) on the product. This example code uses M480 MCU and utilizes API of emWin to show pictures storing in the external SPI flash on the panel. emWin can easily implement how to change pictures on the NuMaker-PFM-M487 V3.0 board.