==== '''Debug Connection instructions for debugging serial port connection instructions''' ====<br>1)First, you need to prepare a 3.3v USB to TTL module. This module can be bought in Orange Pi Store. If there are other similar USB to TTL modules, you can also and then insert the USB port interface of the USB to TTL module into the USB interface of the computer Interface<br><br>

<div style="padding-left:200px">[[File:Orange-pi-r1zero2-plus-lts-img18img45.png|600px]]</div>3)The GND, TX and RX pins of the USB to TTL module need to be connected to the debug serial port of the development board through a Dupont DuPont cable<br>

a. Connect the GND of the USB to TTL module to the GND of the development board<br>b. Connect the The RX of the USB to TTL module is connected to the TX of the development board<br>c. Connect the The TX of the USB to TTL module is connected to the RX of the development board

5)If you are using a CP2102 USB to TTL module, under the condition of a baud rate of 1.500000, some systems may encounter garbled or unusable problems. The specific test situation is as follows{| class<div style="wikitableborder: 1px solid #000;padding: 2px;" ><div style="widthborder: 1px solid #000;padding:800px5px;background-color: #ffffdc;">|-| USB '''The TX and RX of the serial port need to TTL module model|| Host system|| Support situation|-| rowspan=5|CH340|| win7 || ok|be cross-| win10|| ok|-| ubuntu14connected.04|| ok|-| ubuntu18If you don’t want to distinguish the order of TX and RX carefully, you can connect the TX and RX of the serial port casually first.04|| ok|-| ubuntu20If the test serial port has no output, then exchange the order of TX and RX.04|| ok|-| rowspan=5|CP2102|| win7 || ok|-| win10|| Not available|-| ubuntu14There is an order that is right.04|| ok'''|-| ubuntu18.04|| Not available|-| ubuntu20.04|| Not available|}</div><br/div>