what is the lcd commands for new line...

Forum 2005-2010 (read only) Hardware Interfacing
1

Hi,
I have my Arduino connected to an lcd of 16 char x 2 lines. I can't find in google and Arduino site, how to set the cursor on the second line of the display! Does anyone know it? sure! :smiley:

I found these commands till now, but I think non of them does this job:

//LcdCommandWrite(0x01); // clear display, set the cursor to home position
//LcdCommandWrite(0x02); // set cursor position to zero
//LcdCommandWrite(0x0A); // set the display off
//LcdCommandWrite(0x0E); // set the display on and with out cursor blink
//LcdCommandWrite(0x0F); // set the display on and  with cursor blink
//LcdCommandWrite(0x0F); //  cursor blink
//LcdCommandWrite(0x0E); //  cursor not blink
//LcdCommandWrite(0x18); // shift display and cursor to the left
//LcdCommandWrite(0x1c); // shift display and cursor to the right
//LcdCommandWrite(0x14); // shift cursor to the right
//LcdCommandWrite(0x10); // shift cursor to the left
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3

well i am using HEF4094 chip on based "3 wire interface for LCD display" in the play ground. It is not like OOP as the standard LCD lib is, right?

so I can't use such commands like lcd.clear(), etc.

what would be then the way to set the cursor?

4

I've never used the HEF4094 method you talk about, though I did hack together a similar lib a while ago. Based on that (or, liquidCrystal Library, really) and on what you posted, I would guess this:

int row = 1; // row (line nr 0 - 3)
int col = 3;  // a column position

int row_offsets[] = { 0x00, 0x40, 0x14, 0x54 };
unsigned char setCursor = 0x80 | (col + row_offset[row]);
LcdCommandWrite(setCursor); // shift cursor to the left

Untested used directly like this. Also I still haven't gotten around to check wether or not an "int" is unneccesary for the col and row_offset array, I guess it could be "unsigned char" to save some memory.

Also, the LCD's RS line must be pulled LOW to indicate a command.But I guess the function LcdCommandWrite does that.

5

Thank you!