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→26pin GPIO port test
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<li><p>Then set the GPIO port to output low level. After setting, you can use a multimeter to measure the voltage value of the pin. If it is 0v, it means that the low level is set successfully.</p>
{| class="wikitable" style="width:800px;" |-| <p>>>> '''wiringpi.digitalWrite(2, <span style="color:#FF0000">GPIO.LOW</span>)'''</p>|}</li>
<li><p>Then set the GPIO port to output a high level. After setting, you can use a multimeter to measure the voltage value of the pin. If it is 3.3v, it means that the high level is set successfully.</p>
{| class="wikitable" style="width:800px;" |-| <p>>>> '''wiringpi.digitalWrite(2, <span style="color:#FF0000">GPIO.HIGH</span>)'''</p>|}</li></ol>
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<li><p>The method of wiringOP-Python to set GPIO high and low levels in python code can refer to the '''blink.py''' test program in the examples below. The '''blink.py''' test program will set the voltage of all GPIO ports in the 26 pins of the development board to change continuously.</p>
