Go Down

Topic: [SOLVED] How to createChar with items inside an array (Read 1 time) previous topic - next topic


Nov 24, 2012, 02:47 am Last Edit: Nov 24, 2012, 04:02 am by ArOnBaldo Reason: 1
Please, i've looked around the forum but no found solution to my problem, someone can help me to create the character with items inside an array.

"a" is 1 to 16 and I want to build a character (5x8) within the array "alines" in position "a" to "+7".

thank you

Code: [Select]

#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 9, 8, 7, 6, 5, 4, 3, 2);
byte alines[ ] = {
 B10000, B11000, B10100, B10010, B10001, B10000,
 B11000, B11111, B11010, B11001, B11000, B11000,
 B11100, B11010, B11001, B11111, B11111, B11101,
 B11100, B11100, B11100, B11110, B11101,};
long a = 0;
void setup()
 lcd.begin(16, 2);
void loop()
 lcd.createChar(1, a to a +7); /// NEED CREATECHEAR with 8 BYTEs of "alines" from A to A + 7
 lcd.setCursor(0, 0);
 a = a + 1;
 if ( a > 17 ) { a = 1 ;}



lcd.createChar(num, data)
num: which character to create (0 to 7)
data: the character's pixel data

"each custom character is specified by an array of eight bytes, one for each row."

To specify the 8 bytes starting at index 'a' use:

Code: [Select]
lcd.createChar(1, &alines[a]);

Don't worry about the "a+7".  The createChar() function knows how to count to 7.

You can also write it this way:
Code: [Select]
lcd.createChar(1, alines+a);
Send Bitcoin tips to: 1G2qoGwMRXx8az71DVP1E81jShxtbSh5Hp

Go Up

Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

via Egeo 16
Torino, 10131