CH4

1.LCD控制顯示Hello

// 接線說明// +----------+-----------+----------+// | Arduino | IO編號 | 20x2 LCD |// +----------+-----------+----------+// | D22 | 49 | E |// | D23 | 50 | R/W |// | D24 | 51 | RS |// +----------+-----------+----------+// | D30 | 57 | D0 |// | D31 | 58 | D1 |// | D32 | 59 | D2 |// | D33 | 60 | D3 |// | D34 | 61 | D4 |// | D35 | 62 | D5 |// | D36 | 63 | D6 |// | D37 | 64 | D7 |// +----------+-----------+----------+
#include "LiquidCrystalEx.h"
//將腳位設定，此為利用8條資料線控制//LiquidCrystalEx::LiquidCrystalEx(rs, rw, enable, d0, d1, d2, d3, d4, d5, d6, d7)LiquidCrystalEx lcd( 24, 23, 22, 30, 31, 32, 33, 34, 35, 36, 37);
void setup(){ //設定該LCD的文字長度與幾行 lcd.begin(20, 2); // 將文字印在LCD上 lcd.print("Hello!!");}
void loop(){}

2.LCD控制_4線控制

// 接線說明// +----------+-----------+----------+// | Arduino | IO編號 | 20x2 LCD |// +----------+-----------+----------+// | D30 | 57 | E |// | D31 | 58 | R/W |// | D32 | 59 | RS |// | D33 | 60 | - |// | D34 | 61 | D4 |// | D35 | 62 | D5 |// | D36 | 63 | D6 |// | D37 | 64 | D7 |// +----------+-----------+----------+
#include "LiquidCrystalEx.h"
//將腳位設定，此為利用4條資料線控制//LiquidCrystalEx::LiquidCrystalEx(rs, rw, enable, d4, d5, d6, d7)LiquidCrystalEx lcd( 32, 31, 30, 34, 35, 36, 37);
void setup(){ //設定該LCD的文字長度與幾行 lcd.begin(20, 2); // 將文字印在LCD上 lcd.print("Hello!!");}
void loop(){}

3.LCD控制_位置

// 接線說明// +----------+-----------+----------+// | Arduino | IO編號 | 20x2 LCD |// +----------+-----------+----------+// | D30 | 57 | E |// | D31 | 58 | R/W |// | D32 | 59 | RS |// | D33 | 60 | - |// | D34 | 61 | D4 |// | D35 | 62 | D5 |// | D36 | 63 | D6 |// | D37 | 64 | D7 |// +----------+-----------+----------+
#include "LiquidCrystalEx.h"
//將腳位設定，此為利用4條資料線控制//LiquidCrystalEx::LiquidCrystalEx(rs, rw, enable, d4, d5, d6, d7)LiquidCrystalEx lcd( 32, 31, 30, 34, 35, 36, 37);
void setup(){ //設定該LCD的文字長度與幾行 lcd.begin(20, 2); //設定顯示從第0行的第7格開始 lcd.setCursor(7,0); // 將文字印在LCD上 lcd.print("Hello!!");}
void loop(){}

練習

// 接線說明// +----------+-----------+----------+// | Arduino | IO編號 | 20x2 LCD |// +----------+-----------+----------+// | D30 | 57 | E |// | D31 | 58 | R/W |// | D32 | 59 | RS |// | D33 | 60 | - |// | D34 | 61 | D4 |// | D35 | 62 | D5 |// | D36 | 63 | D6 |// | D37 | 64 | D7 |// +----------+-----------+----------+
#include "LiquidCrystalEx.h"
//將腳位設定，此為利用4條資料線控制//LiquidCrystalEx::LiquidCrystalEx(rs, rw, enable, d4, d5, d6, d7)LiquidCrystalEx lcd( 32, 31, 30, 34, 35, 36, 37);
void setup(){ //設定該LCD的文字長度與幾行 lcd.begin(20, 2); //設定顯示從第0行的第7格開始 lcd.setCursor(0,0); //設定顯示從第0行的第0格開始 lcd.print("Hi! I am"); // 將文字印在LCD上 lcd.setCursor(0,1); //設定顯示從第1行的第0格開始 lcd.print("Lin Zhongxian"); // 將文字印在LCD上}void loop(){}

4.LCD控制_函式

LCD_Autoscroll

// 接線說明// +----------+-----------+----------+// | Arduino | IO編號 | 20x2 LCD |// +----------+-----------+----------+// | D30 | 57 | E |// | D31 | 58 | R/W |// | D32 | 59 | RS |// | D33 | 60 | - |// | D34 | 61 | D4 |// | D35 | 62 | D5 |// | D36 | 63 | D6 |// | D37 | 64 | D7 |// +----------+-----------+----------+
#include "LiquidCrystalEx.h"
//將腳位設定，此為利用4條資料線控制//LiquidCrystalEx::LiquidCrystalEx(rs, rw, enable, d4, d5, d6, d7)LiquidCrystalEx lcd( 32, 31, 30, 34, 35, 36, 37);
void setup(){ //設定該LCD的文字長度與幾行 lcd.begin(20, 2); //游標位置閃爍 lcd.blink();}
void loop(){ // 印出0~9: for (int thisChar = 0; thisChar < 10; thisChar++){ lcd.print(thisChar); delay(500); } // 設定游標為(19,1): lcd.setCursor(19, 1); //設定為捲動的方式顯示文字 lcd.autoscroll(); //印出0~9: for (int thisChar = 0; thisChar < 10; thisChar++){ lcd.print(thisChar); delay(500); } // 關閉捲動 lcd.noAutoscroll(); // LCD清除: lcd.clear();}

4.LCD控制_函式

LCD_display

// 接線說明// +----------+-----------+----------+// | Arduino | IO編號 | 20x2 LCD |// +----------+-----------+----------+// | D30 | 57 | E |// | D31 | 58 | R/W |// | D32 | 59 | RS |// | D33 | 60 | - |// | D34 | 61 | D4 |// | D35 | 62 | D5 |// | D36 | 63 | D6 |// | D37 | 64 | D7 |// +----------+-----------+----------+
#include "LiquidCrystalEx.h"
//將腳位設定，此為利用4條資料線控制//LiquidCrystalEx::LiquidCrystalEx(rs, rw, enable, d4, d5, d6, d7)LiquidCrystalEx lcd( 32, 31, 30, 34, 35, 36, 37);
void setup(){ //設定該LCD的文字長度與幾行 lcd.begin(20, 2); //游標位置閃爍 lcd.cursor(); lcd.print("Hello!!");}
void loop(){ //顯示 lcd.display(); delay(500); //不顯示 lcd.noDisplay(); delay(500); }

5.LCD內建字碼

// 接線說明// +----------+-----------+----------+// | Arduino | IO編號 | 20x2 LCD |// +----------+-----------+----------+// | D30 | 57 | E |// | D31 | 58 | R/W |// | D32 | 59 | RS |// | D33 | 60 | - |// | D34 | 61 | D4 |// | D35 | 62 | D5 |// | D36 | 63 | D6 |// | D37 | 64 | D7 |// +----------+-----------+----------+
#include "LiquidCrystalEx.h"
//將腳位設定，此為利用4條資料線控制//LiquidCrystalEx::LiquidCrystalEx(rs, rw, enable, d4, d5, d6, d7)LiquidCrystalEx lcd( 32, 31, 30, 34, 35, 36, 37);
//利用char 陣列的方式存放內容，需有結尾字元char Word1[] = {'H','e','l','l','o','!','!','\0'};//也可使用16進制的方式表示，但需查看LCD內建字碼char Word2[] = {0x48,0x65,0x6C,0x6C,0x6F,0x21,'\0'};
void setup(){ //設定該LCD的文字長度與幾行 lcd.begin(20, 2); lcd.print(Word1); //顯示Word1內容 lcd.setCursor(0,1); lcd.print(Word2); //顯示Word2內容}
void loop(){ }

6.LCD自定義

LCD_Creat_Word

// 接線說明// +----------+-----------+----------+// | Arduino | IO編號 | 20x2 LCD |// +----------+-----------+----------+// | D30 | 57 | E |// | D31 | 58 | R/W |// | D32 | 59 | RS |// | D33 | 60 | - |// | D34 | 61 | D4 |// | D35 | 62 | D5 |// | D36 | 63 | D6 |// | D37 | 64 | D7 |// +----------+-----------+----------+
#include "LiquidCrystalEx.h"
//將腳位設定，此為利用4條資料線控制//LiquidCrystalEx::LiquidCrystalEx(rs, rw, enable, d4, d5, d6, d7)LiquidCrystalEx lcd( 32, 31, 30, 34, 35, 36, 37);// 自定義一個文字byte heart[8] ={    0b01010,    0b10101,    0b10001,    0b10001,    0b10001,    0b01010,    0b00100,    0b00000};
void setup(){     //將自定義存放到LCD的RAM中   lcd.createChar (0, heart); // load heart to memory 0   //設定該LCD的文字長度與幾行   lcd.begin(20, 2);     //顯示自定義文字   lcd.write(byte(0)); //display a heart  }
void loop(){         }

6.LCD自定義

練習

// 接線說明// +----------+-----------+----------+// | Arduino | IO編號 | 20x2 LCD |// +----------+-----------+----------+// | D30 | 57 | E |// | D31 | 58 | R/W |// | D32 | 59 | RS |// | D33 | 60 | - |// | D34 | 61 | D4 |// | D35 | 62 | D5 |// | D36 | 63 | D6 |// | D37 | 64 | D7 |// +----------+-----------+----------+
#include "LiquidCrystalEx.h"
//將腳位設定，此為利用4條資料線控制//LiquidCrystalEx::LiquidCrystalEx(rs, rw, enable, d4, d5, d6, d7)LiquidCrystalEx lcd( 32, 31, 30, 34, 35, 36, 37);
// Create a set of new charactersbyte smiley[8] = {B00000, B01010,B00000,B00000,B10001,B01110,B00000,B00000};byte heart_h[8] = {B00000,B00000,B01010,B10101,B10001,B01010,B00100, B00000};byte heart_f[8] = {B00000,B00000,B01010,B11111,B11111,B01110,B00100, B00000};byte ohm[8] = {B00000,B01110,B10001,B10001,B10001,B01010,B01010, B11011};byte rect[8] = {B11111,B10001,B10001,B10001,B10001,B10001,B10001,B11111};byte arrow_u[8] = {B00100,B01110,B11111,B00100,B00100,B00100,B00100, B00100};byte arrow_d[8] = {B00100,B00100,B00100,B00100, B00100, B11111,B01110,B00100};byte diamond[8] = {B00000,B00100,B01010,B10001, B01010,B00100,B00000,B00000};int z=1;
void setup(){ //設定該LCD的文字長度與幾行 lcd.begin(20, 2); lcd.createChar (0, smiley); // load smiley to memory 0 lcd.createChar (1, heart_h); // load heart_h to memory 1 lcd.createChar (2, heart_f); // load heart_f to memory 2 lcd.createChar (3, ohm); // load ohm to memory 3 lcd.createChar (4, rect); // load rect to memory 4 lcd.createChar (5, arrow_u); // load arrow_u to memory 5 lcd.createChar (6, arrow_d); // load arrow_d to memory 6 lcd.createChar (7, diamond); // load diamond to memory 7 lcd.clear(); //clear the screen lcd.setCursor(0,0); //set cursor to upper left corner lcd.print(char(0)); //display a smiley lcd.print(char(1)); //display a hollow heart lcd.print(char(2)); //display a filled heart lcd.print(char(3)); //display a ohm lcd.print(char(4)); //display a rectangle lcd.print(char(5)); //display a arrow lcd.print(char(6)); //display a rectangle lcd.print(char(7)); //display a arrow}
void loop(){ z= z +1; lcd.setCursor(0,1); //set cursor to bottom left second line lcd.print(char(0)); lcd.print(char(z)); lcd.print(char(3)); lcd.print(char(0)); if (z==2) z=0; delay(500);}