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→Infrared reception test
<li><p>There is no infrared receiver on the main board of the development board. We can expand it through a 24pin expansion board.</p>
<p>[[File:zero2w-img107.png]]</p></li>
<li><p>Install ir-keytable infrared test software</p></li></ol>{| class="wikitable" style="width:800px;" |-|
orangepi@orangepi:~$ '''sudo''' '''apt update'''
orangepi@orangepi:~$ '''sudo''' '''apt-get install -y ir-keytable'''
|}</ol>
<ol start="3" style="list-style-type: decimal;">
<li><p>Then execute ir-keytable to view the information of the infrared device</p>
<ol style="list-style-type: lower-alpha;">
<li>linux5.4 system output is as follows</li></ol></li></ol>{| class="wikitable" style="width:800px;" |-|
orangepi@orangepi:~$ '''ir-keytable'''
Found /sys/class/rc/rc0/ with:
::Name: sunxi-ir Driver: sunxi-rc-recv
::Repeat delay = 500 ms, repeat period = 125 ms
|}
</ol>
<ol start="2" style="list-style-type: lower-alpha;">
<li><p>The output of the linux6.1 system is as follows</p>
{| class="wikitable" style="width:800px;"
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<p>orangepi@orangepi:~$ '''ir-keytable'''</p>
<p>Found /sys/class/rc/rc0/ with:</p>
::<p>Name: sunxi-ir</p>::<p>Driver: sunxi-ir</p>::<p>Default keymap: rc-empty</p>::<p>Input device: /dev/input/event5</p>::<p>LIRC device: /dev/lirc0</p>::<p>Attached BPF protocols: Operation not permitted</p>::<p>Supported kernel protocols: lirc rc-5 rc-5-sz jvc sony nec sanyo mce_kbd rc-6 sharp xmp imon rc-mm</p>::<p>Enabled kernel protocols: lirc</p>::<p>bus: 25, vendor/product: 0001:0001, version: 0x0100</p>::<p>Repeat delay = 500 ms, repeat period = 125 ms</p>|}</li></ol> <!-- --/li></ol>
<ol start="4" style="list-style-type: decimal;">
<li><p>Before testing the infrared reception function, you need to prepare an Orange Pi-specific infrared remote control. '''<span classstyle="markcolor:#FF0000">Other remote controls do not support it</span>'''.</p>
<div class="figure">
<li><p>Then enter the '''ir-keytable -t''' command in the terminal, and then use the infrared remote control to press the button against the infrared receiver of the Orange Pi development board to see the received key code in the terminal.</p>
<ol style="list-style-type: lower-alpha;">
<li>linux5.4 system output is as follows</li></ol></li></ol>{| class="wikitable" style="width:800px;" |-|
orangepi@orangepi:~$ '''sudo ir-keytable -t'''
1598339152.914715: event type EV_MSC(0x04): scancode = 0xfb0410
|}</ol>
<ol start="2" style="list-style-type: lower-alpha;">
<li><p>linux6.1 system output is as follows</p>
{| class="wikitable" style="width:800px;"
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<p>orangepi@orangepi:~$ '''sudo ir-keytable -c -p NEC -t'''</p>
<p>Old keytable cleared</p>
<p>202.063219: lirc protocol(nec): scancode = 0x45c</p>
<p>202.063249: event type EV_MSC(0x04): scancode = 0x45c</p>
<p>202.063249: event type EV_SYN(0x00).</p>|}</li></ol></li></ol><span id="temperature-sensor"></span>
== Temperature sensor ==
