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<div id="projectname">LiquidMenu
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 <span id="projectnumber">1.4.1</span>
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<div id="projectbrief">Menu creation Arduino library for LCDs, wraps LiquidCrystal.</div>
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<div class="title">F_focus_menu.ino</div> </div>
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<div class="contents">
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<p>This example demonstrates how to customize the focus indicator.</p>
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<div class="fragment"><div class="line"><span class="comment">/*</span></div><div class="line"><span class="comment"> * LiquidMenu library - focus_menu.ino</span></div><div class="line"><span class="comment"> *</span></div><div class="line"><span class="comment"> * This example demonstrates how to customize the focus indicator.</span></div><div class="line"><span class="comment"> *</span></div><div class="line"><span class="comment"> * The default focus indicator is an arrow symbol shown on the right of the</span></div><div class="line"><span class="comment"> * focused line. The focus indicator position can be changed per line to be</span></div><div class="line"><span class="comment"> * shown on the right, on the left or in a specified position. The focus</span></div><div class="line"><span class="comment"> * symbol can also be changed, per position.</span></div><div class="line"><span class="comment"> * In this example a custom focus symbol is defined (uint8_t rFocus[8]). Then</span></div><div class="line"><span class="comment"> * it is configured to be the right focus indicator symbol using the</span></div><div class="line"><span class="comment"> * bool LiquidMenu::set_focusSymbol(Position position, uint8_t symbol[8]) method.</span></div><div class="line"><span class="comment"> * The focus position for the different lines is configured using the</span></div><div class="line"><span class="comment"> * bool set_focusPosition(Position position, uint8_t column = 0, uint8_t row = 0)</span></div><div class="line"><span class="comment"> * method. If the "position" is "Position::CUSTOM", the column and row parameters</span></div><div class="line"><span class="comment"> * must be specified. The focus position can be specified for a single line, for</span></div><div class="line"><span class="comment"> * the whole screen, for the whole menu or for the whole menu system using the</span></div><div class="line"><span class="comment"> * respective objects.</span></div><div class="line"><span class="comment"> *</span></div><div class="line"><span class="comment"> * The circuit:</span></div><div class="line"><span class="comment"> * https://github.com/VasilKalchev/LiquidMenu/blob/master/examples/focus_menu/F_focus_menu.png</span></div><div class="line"><span class="comment"> * - LCD RS pin to Arduino pin 12</span></div><div class="line"><span class="comment"> * - LCD E pin to Arduino pin 11</span></div><div class="line"><span class="comment"> * - LCD D4 pin to Arduino pin 5</span></div><div class="line"><span class="comment"> * - LCD D5 pin to Arduino pin 4</span></div><div class="line"><span class="comment"> * - LCD D6 pin to Arduino pin 3</span></div><div class="line"><span class="comment"> * - LCD D7 pin to Arduino pin 2</span></div><div class="line"><span class="comment"> * - LCD R/W pin to ground</span></div><div class="line"><span class="comment"> * - LCD VSS pin to ground</span></div><div class="line"><span class="comment"> * - LCD VDD pin to 5V</span></div><div class="line"><span class="comment"> * - 10k ohm potentiometer: ends to 5V and ground, wiper to LCD V0</span></div><div class="line"><span class="comment"> * - 150 ohm resistor from 5V to LCD Anode</span></div><div class="line"><span class="comment"> * - LCD Cathode to ground</span></div><div class="line"><span class="comment"> * - ----</span></div><div class="line"><span class="comment"> * - Button (left) to Arduino pin A0 and ground</span></div><div class="line"><span class="comment"> * - Button (right) to Arduino pin 7 and ground</span></div><div class="line"><span class="comment"> * - Button (enter) to Arduino pin 10 and ground</span></div><div class="line"><span class="comment"> *</span></div><div class="line"><span class="comment"> * Created July 24, 2016</span></div><div class="line"><span class="comment"> * by Vasil Kalchev</span></div><div class="line"><span class="comment"> *</span></div><div class="line"><span class="comment"> * https://github.com/VasilKalchev/LiquidMenu</span></div><div class="line"><span class="comment"> * http://omerk.github.io/lcdchargen/ - for creating custom indicator symbol</span></div><div class="line"><span class="comment"> *</span></div><div class="line"><span class="comment"> */</span></div><div class="line"></div><div class="line"><span class="preprocessor">#include <LiquidCrystal.h></span></div><div class="line"><span class="preprocessor">#include <<a class="code" href="_liquid_menu_8h.html">LiquidMenu.h</a>></span></div><div class="line"><span class="preprocessor">#include "Button.h"</span></div><div class="line"></div><div class="line"><span class="comment">// Pin mapping for the display</span></div><div class="line"><span class="keyword">const</span> byte LCD_RS = 12;</div><div class="line"><span class="keyword">const</span> byte LCD_E = 11;</div><div class="line"><span class="keyword">const</span> byte LCD_D4 = 5;</div><div class="line"><span class="keyword">const</span> byte LCD_D5 = 4;</div><div class="line"><span class="keyword">const</span> byte LCD_D6 = 3;</div><div class="line"><span class="keyword">const</span> byte LCD_D7 = 2;</div><div class="line"><span class="comment">//LCD R/W pin to ground</span></div><div class="line"><span class="comment">//10K potentiometer to VO</span></div><div class="line">LiquidCrystal lcd(LCD_RS, LCD_E, LCD_D4, LCD_D5, LCD_D6, LCD_D7);</div><div class="line"></div><div class="line"><span class="comment">// Button objects instantiation</span></div><div class="line"><span class="keyword">const</span> <span class="keywordtype">bool</span> pullup = <span class="keyword">true</span>;</div><div class="line">Button left(A0, pullup);</div><div class="line">Button right(7, pullup);</div><div class="line">Button enter(10, pullup);</div><div class="line"></div><div class="line"><a name="_a0"></a><a class="code" href="class_liquid_line.html">LiquidLine</a> welcome_line1(1, 0, <span class="stringliteral">"LiquidMenu "</span>, <a name="a1"></a><a class="code" href="_liquid_menu_8h.html#a7189c07575adbb1070c89dcd0ab5e272">LIQUIDMENU_VERSION</a>);</div><div class="line"><a class="code" href="class_liquid_line.html">LiquidLine</a> welcome_line2(1, 1, <span class="stringliteral">"Focus example"</span>);</div><div class="line"><a name="_a2"></a><a class="code" href="class_liquid_screen.html">LiquidScreen</a> welcome_screen(welcome_line1, welcome_line2);</div><div class="line"></div><div class="line"><a class="code" href="class_liquid_line.html">LiquidLine</a> leftFocus_line(1, 0, <span class="stringliteral">"Left focus"</span>);</div><div class="line"><a class="code" href="class_liquid_line.html">LiquidLine</a> rightFocus_line(1, 1, <span class="stringliteral">"Right focus"</span>);</div><div class="line"><a class="code" href="class_liquid_screen.html">LiquidScreen</a> leftright_screen(leftFocus_line, rightFocus_line);</div><div class="line"></div><div class="line"><a class="code" href="class_liquid_line.html">LiquidLine</a> customFocus_line(1, 0, <span class="stringliteral">"Custom focus"</span>);</div><div class="line"><a class="code" href="class_liquid_screen.html">LiquidScreen</a> customFocus_screen(customFocus_line);</div><div class="line"></div><div class="line"><a class="code" href="class_liquid_line.html">LiquidLine</a> leftF1_line(6, 0, <span class="stringliteral">"Left"</span>);</div><div class="line"><a class="code" href="class_liquid_line.html">LiquidLine</a> leftF2_line(6, 1, <span class="stringliteral">"focus"</span>);</div><div class="line"><a class="code" href="class_liquid_screen.html">LiquidScreen</a> leftF12_screen(leftF1_line, leftF2_line);</div><div class="line"></div><div class="line"><a name="_a3"></a><a class="code" href="class_liquid_menu.html">LiquidMenu</a> menu(lcd);</div><div class="line"></div><div class="line"><span class="comment">// Checks all the buttons.</span></div><div class="line"><span class="keywordtype">void</span> buttonsCheck() {</div><div class="line"> <span class="keywordflow">if</span> (right.check() == LOW) {</div><div class="line"> menu.next_screen();</div><div class="line"> }</div><div class="line"> <span class="keywordflow">if</span> (left.check() == LOW) {</div><div class="line"> menu.previous_screen();</div><div class="line"> }</div><div class="line"> <span class="keywordflow">if</span> (enter.check() == LOW) {</div><div class="line"> <span class="comment">// Switches focus to the next line.</span></div><div class="line"> menu.switch_focus();</div><div class="line"> }</div><div class="line">}</div><div class="line"></div><div class="line"><span class="comment">// Indicator symbol definition, it will change the default symbol for the right focus.</span></div><div class="line"><span class="comment">// http://omerk.github.io/lcdchargen/</span></div><div class="line">uint8_t rFocus[8] = {</div><div class="line"> 0b00000,</div><div class="line"> 0b00000,</div><div class="line"> 0b00100,</div><div class="line"> 0b01110,</div><div class="line"> 0b00100,</div><div class="line"> 0b00000,</div><div class="line"> 0b00000,</div><div class="line"> 0b00000</div><div class="line">};</div><div class="line"></div><div class="line"><span class="comment">// Blank function, it is attached to the lines so that they become focusable.</span></div><div class="line"><span class="keywordtype">void</span> func() {</div><div class="line"> <span class="keywordflow">return</span>;</div><div class="line">}</div><div class="line"></div><div class="line"><span class="keywordtype">void</span> setup() {</div><div class="line"> Serial.begin(250000);</div><div class="line"></div><div class="line"> lcd.begin(16, 2);</div><div class="line"></div><div class="line"> <span class="comment">// Changes the right focus symbol.</span></div><div class="line"> menu.set_focusSymbol(Position::RIGHT, rFocus);</div><div class="line"></div><div class="line"> <span class="comment">// Sets the focus position for this line to be on the left.</span></div><div class="line"> leftFocus_line.set_focusPosition(Position::LEFT);</div><div class="line"> rightFocus_line.set_focusPosition(Position::RIGHT);</div><div class="line"> <span class="comment">// 'CUSTOM' focus position needs column and row parameters.</span></div><div class="line"> customFocus_line.set_focusPosition(Position::CUSTOM, 15, 0);</div><div class="line"> <span class="comment">// The focus position can be changed for the whole screen or</span></div><div class="line"> <span class="comment">// menu at once. 'CUSTOM' position cannot be set because it</span></div><div class="line"> <span class="comment">// needs individual coordinates.</span></div><div class="line"> leftF12_screen.set_focusPosition(Position::LEFT);</div><div class="line"></div><div class="line"> <span class="comment">// Attaching a function to a line makes the line focusable.</span></div><div class="line"> leftFocus_line.attach_function(1, func);</div><div class="line"> rightFocus_line.attach_function(1, func);</div><div class="line"> customFocus_line.attach_function(1, func);</div><div class="line"> leftF1_line.attach_function(1, func);</div><div class="line"> leftF2_line.attach_function(1, func);</div><div class="line"></div><div class="line"> menu.add_screen(welcome_screen);</div><div class="line"> menu.add_screen(leftright_screen);</div><div class="line"> menu.add_screen(customFocus_screen);</div><div class="line"> menu.add_screen(leftright_screen);</div><div class="line"> menu.add_screen(leftF12_screen);</div><div class="line"></div><div class="line"> menu.update();</div><div class="line">}</div><div class="line"></div><div class="line"><span class="keywordtype">void</span> loop() {</div><div class="line"> buttonsCheck();</div><div class="line">}</div></div><!-- fragment --> </div><!-- contents -->
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