51 lines
952 B
Markdown
51 lines
952 B
Markdown
---
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title: Rasberry PI Basics
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---
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## Update your Raspberry Pi
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With os.system(), it is possible to write shell commands and run the apt-get update and upgrade.
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```
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import os
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def install_updates():
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os.system('sudo apt-get update && sudo apt-get upgrade -y')
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install_updates()
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```
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## Rasberry PI Basics Example
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```python
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## CODE THAT MAKES AN LED GLOW FOR 2 SECONDS
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import time
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import RPi.GPIO as GPIO
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while True:
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GPIO.output(2, GPIO.HIGH
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time.sleep(1)
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GPIO.output(2, GPIO.LOW)
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time.sleep(1)
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## CODE FOR PWM CONTROL OF LED BRIGHNTESS
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import RPi.GPIO as GPIO from time
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import sleep led_pin = 2
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GPIO.setmode(GPIO.BCM)
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GPIO.setup(led_pin, GPIO.OUT)
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pwm = GPIO.PWM(led_pin, 100)
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pwm.start(0)
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try:
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while True:
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for x in range(100):
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pwm.ChangeDutyCycle(x)
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sleep(0.01)
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for x in range(100, 0, -1):
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pwm.ChangeDutyCycle(x)
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sleep(0.01)
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except KeyboardInterrupt:
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pwm.stop()
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GPIO.cleanup()
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```
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