Hardware Reference
In-Depth Information
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change_timezone
: We can set our current ime zone using this opion.
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memory_split
: This opion lets us split the memory between the ARM processor's
CPU and the graphics processor.
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overclock
: The default clock speed is 700 MHz. This opion lets you set the clock
speed to 1 GHz. This might vary for Raspberry Pi 2.
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ssh
: This opion enables the secure shell server. This is required to remotely log in
the Raspberry Pi and control devices remotely. It is enabled by default on Raspbian.
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boot_behaviour
: This opion enables you to boot directly into the desktop.
It is important that you enable this option on as the default option
boots into a normal text-based console.
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update
:
If the Raspberry Pi is connected to the Internet using an Ethernet cable,
the
raspi-config
tool downloads any package that might be available.
Once we complete the setup process by selecing
Finish
, the Raspberry Pi reboots and
expands the filesystem if necessary.
Mission briefing
In this project, we will set up the
GPIO
(
General Purpose Input Output
) peripheral on the
Raspberry Pi and write our first program to cause an LED to blink. At the end, we will repeat
the same steps with a Raspberry Pi add-on board called PiCrust. This will allow you to get
your feet wet and ensure you have all the right tools going forward, and should you need to,
troubleshoot any problems you might idenify.
Why is it awesome?
Think of saying "Hello World" as both a nod to programming tradiion and a dry run to
ensure you are well equipped!
Your Hotshot objectives
The objecives for this mission are quite simple, and yet take us all several milestones
further! Here are the objecives of the Hello World mission:
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Collect all the necessary tools
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Set up the GPIO peripheral
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Introduce ourselves to the Raspberry Pi environment
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Turn a light emiing diode (LED) on and of with a 1 second delay
