Avand LCD-ul conectat prin interfata i2c, a trebuit sa modific un pic sketch-ul.
/*
A set of custom made large numbers for a 16x2 LCD using the
LiquidCrystal library. Works with displays compatible with the
Hitachi HD44780 driver.
Made by Michael Pilcher
2/9/2010
adapted sketch for i2c interface by Nicu FLORICA aka niq_ro
http://www.tehnic.go.ro
http://nicuflorica.blogspot.ro
12.06.2013 (12.iun.2013 - Craiova, Romania)
*/
// include the library
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
// initialize the interface pins
LiquidCrystal_I2C lcd(0x20,16,2); // 0x20 is adresss for LCC 16x2
int x = 0;
// the 8 arrays that form each segment of the custom numbers
byte LT[8] =
{
B00111,
B01111,
B11111,
B11111,
B11111,
B11111,
B11111,
B11111
};
byte UB[8] =
{
B11111,
B11111,
B11111,
B00000,
B00000,
B00000,
B00000,
B00000
};
byte RT[8] =
{
B11100,
B11110,
B11111,
B11111,
B11111,
B11111,
B11111,
B11111
};
byte LL[8] =
{
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
B01111,
B00111
};
byte LB[8] =
{
B00000,
B00000,
B00000,
B00000,
B00000,
B11111,
B11111,
B11111
};
byte LR[8] =
{
B11111,
B11111,
B11111,
B11111,
B11111,
B11111,
B11110,
B11100
};
byte UMB[8] =
{
B11111,
B11111,
B11111,
B00000,
B00000,
B00000,
B11111,
B11111
};
byte LMB[8] =
{
B11111,
B00000,
B00000,
B00000,
B00000,
B11111,
B11111,
B11111
};
void setup()
{
lcd.init();
// assignes each segment a write number
lcd.createChar(8,LT);
lcd.createChar(1,UB);
lcd.createChar(2,RT);
lcd.createChar(3,LL);
lcd.createChar(4,LB);
lcd.createChar(5,LR);
lcd.createChar(6,UMB);
lcd.createChar(7,LMB);
lcd.backlight(); //backlight is now ON
// sets the LCD's rows and colums:
lcd.begin(0, 2);
}
void custom0O()
{ // uses segments to build the number 0
lcd.setCursor(x, 0);
lcd.write(8);
lcd.write(1);
lcd.write(2);
lcd.setCursor(x, 1);
lcd.write(3);
lcd.write(4);
lcd.write(5);
}
void custom1()
{
lcd.setCursor(x,0);
lcd.write(1);
lcd.write(2);
lcd.setCursor(x+1,1);
lcd.write(255);
}
void custom2()
{
lcd.setCursor(x,0);
lcd.write(6);
lcd.write(6);
lcd.write(2);
lcd.setCursor(x, 1);
lcd.write(3);
lcd.write(7);
lcd.write(7);
}
void custom3()
{
lcd.setCursor(x,0);
lcd.write(6);
lcd.write(6);
lcd.write(2);
lcd.setCursor(x, 1);
lcd.write(7);
lcd.write(7);
lcd.write(5);
}
void custom4()
{
lcd.setCursor(x,0);
lcd.write(3);
lcd.write(4);
lcd.write(2);
lcd.setCursor(x+2, 1);
lcd.write(255);
}
void custom5()
{
lcd.setCursor(x,0);
lcd.write(255);
lcd.write(6);
lcd.write(6);
lcd.setCursor(x, 1);
lcd.write(7);
lcd.write(7);
lcd.write(5);
}
void custom6()
{
lcd.setCursor(x,0);
lcd.write(8);
lcd.write(6);
lcd.write(6);
lcd.setCursor(x, 1);
lcd.write(3);
lcd.write(7);
lcd.write(5);
}
void custom7()
{
lcd.setCursor(x,0);
lcd.write(1);
lcd.write(1);
lcd.write(2);
lcd.setCursor(x+1, 1);
lcd.write(8);
}
void custom8()
{
lcd.setCursor(x,0);
lcd.write(8);
lcd.write(6);
lcd.write(2);
lcd.setCursor(x, 1);
lcd.write(3);
lcd.write(7);
lcd.write(5);
}
void custom9()
{
lcd.setCursor(x,0);
lcd.write(8);
lcd.write(6);
lcd.write(2);
lcd.setCursor(x+2, 1);
lcd.write(255);
}
void customA()
{
lcd.setCursor(x,0);
lcd.write(8);
lcd.write(6);
lcd.write(2);
lcd.setCursor(x, 1);
lcd.write(255);
lcd.write(254);
lcd.write(255);
}
void customB()
{
lcd.setCursor(x,0);
lcd.write(255);
lcd.write(6);
lcd.write(5);
lcd.setCursor(x, 1);
lcd.write(255);
lcd.write(7);
lcd.write(2);
}
void customC()
{
lcd.setCursor(x,0);
lcd.write(8);
lcd.write(1);
lcd.write(1);
lcd.setCursor(x,1);
lcd.write(3);
lcd.write(4);
lcd.write(4);
}
void customD()
{
lcd.setCursor(x, 0);
lcd.write(255);
lcd.write(1);
lcd.write(2);
lcd.setCursor(x, 1);
lcd.write(255);
lcd.write(4);
lcd.write(5);
}
void customE()
{
lcd.setCursor(x,0);
lcd.write(255);
lcd.write(6);
lcd.write(6);
lcd.setCursor(x, 1);
lcd.write(255);
lcd.write(7);
lcd.write(7);
}
void customF()
{
lcd.setCursor(x,0);
lcd.write(255);
lcd.write(6);
lcd.write(6);
lcd.setCursor(x, 1);
lcd.write(255);
}
void customG()
{
lcd.setCursor(x,0);
lcd.write(8);
lcd.write(1);
lcd.write(1);
lcd.setCursor(x,1);
lcd.write(3);
lcd.write(4);
lcd.write(2);
}
void customH()
{
lcd.setCursor(x,0);
lcd.write(255);
lcd.write(4);
lcd.write(255);
lcd.setCursor(x, 1);
lcd.write(255);
lcd.write(254);
lcd.write(255);
}
void customI()
{
lcd.setCursor(x,0);
lcd.write(1);
lcd.write(255);
lcd.write(1);
lcd.setCursor(x,1);
lcd.write(4);
lcd.write(255);
lcd.write(4);
}
void customJ()
{
lcd.setCursor(x+2,0);
lcd.write(255);
lcd.setCursor(x,1);
lcd.write(4);
lcd.write(4);
lcd.write(5);
}
void customK()
{
lcd.setCursor(x,0);
lcd.write(255);
lcd.write(4);
lcd.write(5);
lcd.setCursor(x,1);
lcd.write(255);
lcd.write(254);
lcd.write(2);
}
void customL()
{
lcd.setCursor(x,0);
lcd.write(255);
lcd.setCursor(x,1);
lcd.write(255);
lcd.write(4);
lcd.write(4);
}
void customM()
{
lcd.setCursor(x,0);
lcd.write(8);
lcd.write(3);
lcd.write(5);
lcd.write(2);
lcd.setCursor(x,1);
lcd.write(255);
lcd.write(254);
lcd.write(254);
lcd.write(255);
}
void customN()
{
lcd.setCursor(x,0);
lcd.write(8);
lcd.write(2);
lcd.write(254);
lcd.write(255);
lcd.setCursor(x,1);
lcd.write(255);
lcd.write(254);
lcd.write(3);
lcd.write(5);
}
void customP()
{
lcd.setCursor(x,0);
lcd.write(255);
lcd.write(6);
lcd.write(2);
lcd.setCursor(x, 1);
lcd.write(255);
}
void customQ()
{
lcd.setCursor(x,0);
lcd.write(8);
lcd.write(1);
lcd.write(2);
lcd.setCursor(x, 1);
lcd.write(3);
lcd.write(4);
lcd.write(255);
lcd.write(4);
}
void customR()
{
lcd.setCursor(x,0);
lcd.write(255);
lcd.write(6);
lcd.write(2);
lcd.setCursor(x,1);
lcd.write(255);
lcd.write(254);
lcd.write(2);
}
void customS()
{
lcd.setCursor(x,0);
lcd.write(8);
lcd.write(6);
lcd.write(6);
lcd.setCursor(x, 1);
lcd.write(7);
lcd.write(7);
lcd.write(5);
}
void customT()
{
lcd.setCursor(x,0);
lcd.write(1);
lcd.write(255);
lcd.write(1);
lcd.setCursor(x,1);
lcd.write(254);
lcd.write(255);
}
void customU()
{
lcd.setCursor(x, 0);
lcd.write(255);
lcd.write(254);
lcd.write(255);
lcd.setCursor(x, 1);
lcd.write(3);
lcd.write(4);
lcd.write(5);
}
void customV()
{
lcd.setCursor(x, 0);
lcd.write(3);
lcd.write(254);
lcd.write(254);
lcd.write(5);
lcd.setCursor(x+1, 1);
lcd.write(2);
lcd.write(8);
}
void customW()
{
lcd.setCursor(x,0);
lcd.write(255);
lcd.write(254);
lcd.write(254);
lcd.write(255);
lcd.setCursor(x,1);
lcd.write(3);
lcd.write(8);
lcd.write(2);
lcd.write(5);
}
void customX()
{
lcd.setCursor(x,0);
lcd.write(3);
lcd.write(4);
lcd.write(5);
lcd.setCursor(x,1);
lcd.write(8);
lcd.write(254);
lcd.write(2);
}
void customY()
{
lcd.setCursor(x,0);
lcd.write(3);
lcd.write(4);
lcd.write(5);
lcd.setCursor(x+1,1);
lcd.write(255);
}
void customZ()
{
lcd.setCursor(x,0);
lcd.write(1);
lcd.write(6);
lcd.write(5);
lcd.setCursor(x, 1);
lcd.write(8);
lcd.write(7);
lcd.write(4);
}
void customqm()
{
lcd.setCursor(x,0);
lcd.write(1);
lcd.write(6);
lcd.write(2);
lcd.setCursor(x, 1);
lcd.write(254);
lcd.write(7);
}
void customsm()
{
lcd.setCursor(x,0);
lcd.write(255);
lcd.setCursor(x, 1);
lcd.write(7);
}
void letters1()
{
customA();
x = x + 4;
customB();
x = x + 4;
customC();
x = x + 4;
customD();
x = x + 4;
customE();
x = x + 4;
customF();
x = x + 4;
customG();
x = x + 4;
customH();
x = x + 4;
customI();
x = x + 4;
customJ();
delay(500);
}
void letters2()
{
customK();
x = x + 4;
customL();
x = x + 4;
customM();
x = x + 5;
customN();
x = x + 5;
custom0O();
x = x + 4;
customP();
x = x + 4;
customQ();
x = x + 5;
customR();
x = x + 4;
customS();
delay(500);
}
void letters3()
{
customT();
x = x + 4;
customU();
x = x + 4;
customV();
x = x + 5;
customW();
x = x + 5;
customX();
x = x + 4;
customY();
x = x + 4;
customZ();
x = x + 4;
customqm();
x = x + 4;
customsm();
delay(500);
}
void numbers()
{
custom0O(); // displays custom 0 on the LCD
x = x + 4; // sifts cursor over 4 columns
custom1();
x = x + 4;
custom2();
x = x + 4;
custom3();
x = x + 4;
custom4();
x = x + 4;
custom5();
x = x + 4;
custom6();
x = x + 4;
custom7();
x = x + 4;
custom8();
x = x + 4;
custom9();
delay(500);
}
void loop()
{
letters1();
for (int positionCounter = 0; positionCounter < 24; positionCounter++) {
lcd.scrollDisplayLeft();
delay(1000);
}
x = 0;
lcd.clear();
delay(500);
letters2();
for (int positionCounter = 0; positionCounter < 23; positionCounter++) {
lcd.scrollDisplayLeft();
delay(1000);
}
x = 0;
lcd.clear();
delay(500);
letters3();
for (int positionCounter = 0; positionCounter < 23; positionCounter++) {
lcd.scrollDisplayLeft();
delay(1000);
}
x = 0;
lcd.clear();
delay(500);
numbers();
for (int positionCounter = 0; positionCounter < 24; positionCounter++) {
lcd.scrollDisplayLeft();
delay(1000);
}
x = 0;
lcd.clear();
delay(500);
}
La mine pe ecran, caracterele arata asa:
Am facut si un filmulet cu caractelele mari, care se numeste Large font for 16x2 LCD on i2c with Arduino:
Super cool. Thx you.
RăspundețiȘtergereHello, whow what a great sketch !
RăspundețiȘtergereAnd it works rock solid.
Although I understand most of the code I couldn't find out yet what to change if I don't want the characters (which I type in) to scroll but remain fixed on a certain position (e.g. (0, 0) (2, 1).
If you could give me a hint I would apreciate a mail to
andrewlobster@web.de
Thank you
I don't undestand exactly what you want to made
ȘtergereHello and thanx for your reply.
RăspundețiȘtergereOK, I try to explain more detailed.
Your sketch prints out letters1() letters2() letters3() and so on and scrolls the customA() customB() custumC() ... to the left.
Now what I want to do is to print 'HELLO' and have it permanently staying on the screen.
What I did so far is:
void loop()
{
x = 0;
lcd.clear();
customH();
x = x + 4;
customE();
x = x + 4;
customL();
x = x + 4;
customL();
x = x + 4;
custom0O();
x = x + 4;
delay(1000);
}
and it works like it should - the string 'HELLO' is permanentely displayed.
Now, as in my final program the string comes from the outside via bluetooth, it has a fix length of 5 items but I don't know the content. It can be 'HELLO' or 'THANX' or whatever.
So what I need to do is to read each item (from 0 to 4) and assign it to the correct custom letter plus x = x + 4
Such as
char A = customA();
x = x + 4;
for each possible letter and number
This is probably incorrect code, but I don't know how to explain it better.
Maybe you have a clue.
thanx
andy