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→40pin interface GPIO, UART, SPI test
== 40pin interface GPIO, UART, SPI test ==
{| class="wikitable" style="background-color:#ffffdc;width:800px;" |-| <big>'''Note: The pin header on the 40pin interface is not soldered by default, and you need to solder it yourself before it can be used.'''</big>|}
<span id="pin-gpio-port-test-method"></span>