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How to blink text without using delay_ms() function?

 
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tonkostz



Joined: 07 May 2011
Posts: 42
Location: Bulgaria

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How to blink text without using delay_ms() function?
PostPosted: Thu Jun 13, 2013 1:05 am     Reply with quote

I want to blink a whole text line on the lcd but without using the delay_ms() function?
I mean that this variant is not good for me:
Code:
   
lcd_gotoxy(1,1);
printf(lcd_putc,"    Blinking   ");
delay_ms(500);
lcd_gotoxy(1,1);
printf(lcd_putc,"               ");
delay_ms(500);

I want something based on a timer counter for example:
Code:

 if(blink_flag==1)
 {   
  counter_blink++;
 }
 else
 {
  counter_blink=0;
 }
 if(counter_blink==50)
 {       
  counter_blink=0;
  blink=1;
 }

The problem is that i don't know how to reset the counter after the first blink and make it blink continuously.
oxo



Joined: 13 Nov 2012
Posts: 219
Location: France

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PostPosted: Thu Jun 13, 2013 1:09 am     Reply with quote

Look at using the RTOS. Its easy to set up a task which repeats, and have it turn your display on and off.

Code:
#use rtos(timer=0, minor_cycle = 10ms)

#task (rate = 200ms, max = 10ms)
void display_task(void)
{
   lcd_gotoxy(1,1);
   blink = !blink;
   if(blink)
       printf(lcd_putc,"    Blinking   ");
   else
      printf(lcd_putc,"               ");
}
tonkostz



Joined: 07 May 2011
Posts: 42
Location: Bulgaria

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PostPosted: Thu Jun 13, 2013 1:27 am     Reply with quote

Thank you very much! It works!
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