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- #include <Wire.h>
- #include <LiquidCrystal_I2C.h>
- #define BACKLIGHT_PIN 13
- LiquidCrystal_I2C lcd(0x20); // Set the LCD I2C address
- //LiquidCrystal_I2C lcd(0x38, BACKLIGHT_PIN, POSITIVE); // Set the LCD I2C address
- // Creat a set of new characters
- const uint8_t charBitmap[][8] = {
- { 0xc, 0x12, 0x12, 0xc, 0, 0, 0, 0 },
- { 0x6, 0x9, 0x9, 0x6, 0, 0, 0, 0 },
- { 0x0, 0x6, 0x9, 0x9, 0x6, 0, 0, 0x0 },
- { 0x0, 0xc, 0x12, 0x12, 0xc, 0, 0, 0x0 },
- { 0x0, 0x0, 0xc, 0x12, 0x12, 0xc, 0, 0x0 },
- { 0x0, 0x0, 0x6, 0x9, 0x9, 0x6, 0, 0x0 },
- { 0x0, 0x0, 0x0, 0x6, 0x9, 0x9, 0x6, 0x0 },
- { 0x0, 0x0, 0x0, 0xc, 0x12, 0x12, 0xc, 0x0 }
- };
- void setup()
- {
- int charBitmapSize = (sizeof(charBitmap ) / sizeof (charBitmap[0]));
- // Switch on the backlight
- pinMode ( BACKLIGHT_PIN, OUTPUT );
- digitalWrite ( BACKLIGHT_PIN, HIGH );
- lcd.begin(16,2); // initialize the lcd
- for ( int i = 0; i < charBitmapSize; i++ )
- {
- lcd.createChar ( i, (uint8_t *)charBitmap[i] );
- }
- lcd.home (); // go home
- lcd.print("Hello, ARDUINO ");
- lcd.setCursor ( 0, 1 ); // go to the next line
- lcd.print (" FORUM - fm ");
- delay ( 1000 );
- }
- void loop()
- {
- lcd.home ();
- // Do a little animation by writing to the same location
- for ( int i = 0; i < 2; i++ )
- {
- for ( int j = 0; j < 16; j++ )
- {
- lcd.print (char(random(7)));
- }
- lcd.setCursor ( 0, 1 );
- }
- delay (200);
- }
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