intro to arduino coding part 1

8/12/2019 Intro to Arduino Coding Part 1

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Introduction to Arduino Coding


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Code (rough definition)

A series of instructions given to a

computer to execute an action or series ofactions


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Code (rough definition)

A series of instructions given to a

computer to execute an action or series ofactions

The code i$$ %e run from the first $ine tothe $ast $ine in order

It i$$ on$y do hat the code says for it to

do


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Communicating To and &rom a

Computer

Commands: $ines that te$$ the computer hat

to do

'yntax rrors: the computer te$$s you hen

you say something it does not understand


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&undamenta$s of rduino rogramming

1 *ec$arations

+ ,oid setup

- ,oid $oop


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this creates a varia%$e

ca$$ed .$edin/ and

assigns it the va$ue of1- for the pin that you

have connected a ire

to on the Arduino


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int is used to dec$are ma0ing

a varia%$e that is an integer

(ho$e num%er that is

negative or positive)

this is the name of the integer

"ou can ca$$ it anything youant except a num%er or

something that has meaning

a$ready ($i0e int) "ou shou$d

name this something re$ated to

the num%er it is storing In thiscase e ca$$ it $edin %ecause it

is the pin $eading to the $ed

this is the va$ue that

$edin i$$ %e This va$ueis 1- since e are using

this varia%$e to store the

pin num%er that our $ed

ire is connected to "ou must end $ines ith a

semico$on (except $oopscomments if statements

and functions)


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Another ay to

rite this program

removes the

varia%$e ca$$ed$edin and you

enter .1-/

everyhere you

had $edin Thisor0s %ut it is

easier to use a

varia%$e for the pin

in case you ant tochange the pin

num%er


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In the .setup/ function e $et the

Arduino 0no hat things e are

using 2&34 e use themThis is the type of

function e are ma0ing

A .void/ function does

not return a va$ue

This is the name of the

function "ou a$ays shou$duse this first $ine in your

Arduino programs

5orma$$y in a function

you put varia%$es that

the function uses inhere 'ince e don6t

have any it is empty ()"ou must have 7 8 cur$y

%rac0ets that sho the

start and end of the

function Imagine this as

the top and %ottom s$ices

of %rea0 of your

.function9sandich/pinode te$$s

Arduino hat

the pins do pinodeneeds + pieces of info

The pin # and hat that

pin i$$ %e used for

pinode(pin # I5;T or

3;T;T)

Instead of a num%er e

have a varia%$e here

hich has a num%erva$ue assigned to it

This is here e te$$ the

computer ho this pin

i$$ function The

choices are I5;T or

3;T;T

"ou ;'T have thissemico$on


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The void $oop() function is here your main program $ies

Li0e a$$ functionsyou

must put 7 8 cur$y

%rac0ets

at the %eginning

and endof your function

sandichI?> @ oer 3nL3= @ oer 3ff

*on6t forget your semico$ons

intro to arduino coding part 1

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