12 lines
218 B
Markdown
12 lines
218 B
Markdown
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SCL is one of the i2c pins on the Pi, [learn more about i2c](/pinout/i2c).
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```python
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require 'wiringpi2'
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HIGH = 1
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LOW = 0
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OUTPUT = 1
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INPUT = 0
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io = WiringPi::GPIO.new
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io.pin_mode(9,OUTPUT)
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io.digital_write(9,HIGH)
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```
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