/* * Programming is a process of problem solving. You have a goal in mind * and you break it into manageable steps to achieve that goal. * * The goal you're after is the Jump Man game, so a good starting * point is using the screen it's played on. This lesson starts with a * message printed on your Maker Screen */ //Include the MakerScreenXVI library so you can control Maker Screen. #include "MakerScreenXVI.h" /* * A library is a collection of tools that are prepared in advance * to make programming easier. This one is for the Maker Screen 16x2 LCD * screen. You'll use methods and commands built into the library to * control it.Each method will be explain as it's introduced. */ /* * Once the library is included the code, you need to be able to use * the resources it provides. To do that, create what's called * an object. An object is a specific, named version of the thing you * want to use the library's methods on. */ MakerScreenXVI lcd; /* * 'MakerScreenXVI' is the type of thing you'll use and 'lcd' is * the name of the screen object connected to the hardware. * You can name an object almost anything. */ /* * Arduino is designed with two specific places for code to run: * void setup() and void loop(). Everything bewtween the { and the } * of void setup() is run one time. It's where you put code that starts * devices or initializes settings. */ void setup() { // In setup, the screen is made ready to take commands, // which is accomplished by the 'begin' method: lcd.begin(); /* * Methods are how you use objects, they tell the object you named to * do something. Here, you tell the object named lcd to set its * settings to default. */ /* The backlightOn() method turns on the LED embedded in the screen. * Place two slashes (//) in front of this line to 'comment it out'. * Re-upload the code and see what it looks like without backlight. */ lcd.backlightOn(); /* * Once the screen is on and lit up, send it some text.Use the print() * method. Note that characters must be within double quotes " " */ lcd.print("Hello world!"); /* * This method has something between the parenthesis: the text you * want to show on the lcd. Data given to a method this way are called * 'arguments'.They provide directions to an object through a method. * The command 'print this on the screen' wouldn't make much sense * without telling Maker Screen what to print! */ } //This brace is the end of the void setup() section /* * After setup() is loop(). Code written between the { and } of * void loop() executes over and over as long as the Maker Board is * powered on. Most code you write will be in loop, as you usually want * continuous operation. Loop can run millions of times per second! */ void loop() { /* * No code is needed in loop for this program. The program has no * changing parts. */ } /* * That's the end of your first program! To recap: * - You included a library so that you could use the screen * - Created an object called 'lcd' to represent your screen * - Activated Maker Screen and turned on the backlight * - Sent Maker Screen some text to display * * Here you typed lcd.print() in void setup so that it only wrote to * the screen once. After you've run this example, * try copying that line into loop() between the { and } and uploading it. * Watch the screen closely for different behaviors * * Try replacing 'world' in the .print method with your name or type a * whole new message. Re-upload your code to see the effects. */ // (c) 2017 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense

/* * In this project, you'll build on the text message you showed in lesson * one and learn a new method from the MakerScreenXVI library to control * items on the screen. */ #include "MakerScreenXVI.h" MakerScreenXVI lcd; void setup() { lcd.begin(); lcd.backlightOn(); } void loop() { /* * If you tried putting the lcd.print into loop without anything * else, as suggested in the previous project, you saw how the * text was pushed along the screen. That's because the screen * starts writing wherever it left off after the last print. */ // lcd.clear is a method that resets the screen, clearing off // old text and putting the cursor in the upper-left of the screen lcd.clear(); lcd.print("Hello world!"); } /* * In this project, you changed something on the screen over time by * printing the message in the loop. You got a taste of how fast the * Maker Board is: when you print and clear only, the screen flickers * really badly. Next, you'll use a new function to slow it down. */ //(c) 2017 Let's Start Coding. License: www.letsstartcoding.com/bsdlicense