[SOLVED] scrolling text on LCD

[Qbik]

Hello,

I trying to write code to scroll text across my LCD display (HD44780). I tried to find any solution of my problem but I didn't find.

Could you tell me the algorithm how to do it? Or source code?

I want to scroll the first line while the second will be fixed. I tried to do it without build in command 0x18 (scroll left) and 0x1e (scroll right). Is it possible? O

I'm using:
+Microcontroller: PIC18F550
+MPLAB, Hi Tech compiler

Thank you a lot for advice.

 

[#MAAM#]

this is example may help you but with 8051

**broken link removed**

 

[Qbik]

I regret to say that I know this example and author used here build in routine (code). 0x1C means that LCD will be shift to right. As I wrote I'd like to avoid it (if it is possible). Below is fragment of this code:

---

Code C - [expand]
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while(1)
{
  lcdcmd(0x1C);  //Shift the entire display to right
  delay(75);
}

---

 

[hugo]

Hi,

For a single character scrolling to the right, the algorithm is :

- write a character (row,col)
- delay 100 (ms) //scrolling speed
- delete it
- write it again (row,col+1)
- delay 100 (ms) //scrolling speed
- delete it
... etc

 

[Qbik]

Thank you for your replies. The problem is solved.