8,367
edits
Changes
→40 pin SPI test
<li><p>As can be seen from the figure below, the SPIs available for Orange Pi 5 Plus are SPI0 and SPI4</p>
<p>[[File:plus5-img304.png]]</p></li>
<li><p>The corresponding pins of SPI0 and SPI4 in 40pin are shown in the table below. SPI4_M1 and SPI4_M2 can only use one of them at the same time, and they cannot be used at the same time. They are all the same SPI4, but they are connected to different pins. Please don't think that they are two different sets of SPI buses.</p></li></ol>
{| class="wikitable" style="width:800px;"
| '''spi4-m 2-cs0-spidev'''
|}
</ol>
<ol start="3" style="list-style-type: decimal;">
<li><p>In the linux system, the SPI in the 40 pin is closed by default, and it needs to be opened manually before it can be used. The detailed steps are as follows:</p>
