<li><p>If the development board is connected to an HDMI screen, after the &gt; system startup is completed, the command line interface of the &gt; micro Linux system can be seen on the HDMI screen.</p></li></ol><p>'''<span style="color:#FF0000">I would like to emphasize again that the micro Linux system in SPI Flash is only used to prove that the development board can start normally (you can light up the development board without burning the system). If you find that there are other problems with the system in SPI Flash (such as serial port Unable to log in), please ignore it.</span>'''</p><p>If you want to use the development board normally, please burn Ubuntu, Debian and other Linux images or Android images to the TF card, and then use it.</p></li></ol>