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sahu77
Joined: 08 Sep 2011
Posts: 202
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| scroll Text on 16*2 lcd |
 Posted: Fri Jan 27, 2012 10:16 am |
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How can I use scroll Text on 16*2 lcd. I use flex_lcd.c ?
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sahu |
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ezflyr
Joined: 25 Oct 2010
Posts: 1019
Location: Tewksbury, MA
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| Posted: Fri Jan 27, 2012 11:32 am |
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Hi,
Here is a code snippet that illustrates scrolling on an LCD:
| Code: |
char message[15] = "Hello World! ";
int8 ctr;
for (ctr=0;ctr<14;ctr++) {
lcd_gotoxy(1,2);
printf(lcd_putc,"%s",message+ctr);
delay_ms(100);
}
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John |
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sahu77
Joined: 08 Sep 2011
Posts: 202
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| Posted: Fri Jan 27, 2012 12:14 pm |
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| ezflyr wrote: | Hi,
Here is a code snippet that illustrates scrolling on an LCD:
| Code: |
char message[15] = "Hello World! ";
int8 ctr;
for (ctr=0;ctr<14;ctr++) {
lcd_gotoxy(1,2);
printf(lcd_putc,"%s",message+ctr);
delay_ms(100);
}
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John |
its work as
| Code: | Hello World!
ello World!
llo World!
lo World!
o World!
World!
World!
orld!
orld!
rld!
ld!
d!
!
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i want as
| Code: |
!
d!
ld!
rld!
orld!
Hello World!
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hope understand what i want to say u ?
sorry for my bad English .
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sahu |
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temtronic
Joined: 01 Jul 2010
Posts: 9226
Location: Greensville,Ontario
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| Posted: Fri Jan 27, 2012 1:57 pm |
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Well you didn't specify which direction !!
We had no example to see what you really wnated.
Simply redo the counter and starting position of the message.
Use graph paper to layout what you want,decide on whether the counter should count up or down, and where 'start' location will be.
10 lines of code..... |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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sahu77
Joined: 08 Sep 2011
Posts: 202
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| Posted: Sat Jan 28, 2012 10:37 am |
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Thank you very much PCM!! It works perfect! but has 1 problem. as i use
| Code: | lcd_gotoxy(1,1);
printf(lcd_putc,"%s",message_1);
lcd_scroll_right();
delay_ms(500);
lcd_gotoxy(1,2);
printf ( lcd_putc, "message_2" );
delay_ms(500); |
my aim is only message_1 scroll_right .as i use message_1 & message_2 both are scroll_right .
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sahu |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19513
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| Posted: Sat Jan 28, 2012 11:05 am |
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So, you have to use the software approach as ezflyr has already shown, just with the direction reversed (temtronic's post). The hardware scrolling only works for the whole screen.
Best Wishes |
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