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Panos
Joined: 09 Jun 2010
Posts: 8
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| use shift right/left with flex_lcd driver |
 Posted: Thu Jun 10, 2010 6:52 am |
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I have this very simple program:
| Code: | #include <16F877.H>
#fuses XT, NOWDT, NOPROTECT, BROWNOUT, PUT, NOLVP
#use delay(clock = 4000000)
#include "flex_lcd.c"
//==========================
void main()
{
lcd_init(); // Always call this first.
lcd_putc("\fHello World");
while(1);
} |
I use the flex_lcd driver for the 16x2 lcd HD4478U to display the word "hello world" and i would like to make a clear question:
Can i use the command shift_right (address, bytes, value)
to shift the "hello word" or i have to do it with a for loop.
In other words does the flex_lcd driver supports the shift command? |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Thu Jun 10, 2010 11:45 am |
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Here is a side scrolling demo that works with the Flex lcd driver:
| Code: |
#include <16F877.H>
#fuses XT, NOWDT, NOPROTECT, BROWNOUT, PUT, NOLVP
#use delay(clock=4000000)
#include "flex_lcd.c"
void lcd_scroll_right(void)
{
lcd_send_byte(0, 0x1E);
}
//-------------------------
void lcd_scroll_left(void)
{
lcd_send_byte(0, 0x18);
}
//=======================
void main()
{
int8 i;
lcd_init();
lcd_putc("\f"); // Clear the LCD
delay_ms(100);
// The 16x2 LCD memory is 40 characters wide, so fill it
// up with data for two screens. Each line below must
// contain 40 characters (excluding the newline).
lcd_putc("Hello to the Side scrolling \n");
lcd_putc("world. demo. ");
delay_ms(1000);
while(1)
{
for(i = 0; i < 20; i++) // Scroll for 20 chars
{
lcd_scroll_left();
delay_ms(200); // This sets the scroll speed
}
delay_ms(2000); // Wait 2 seconds between scrolling
// each screen.
}
} |
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Panos
Joined: 09 Jun 2010
Posts: 8
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| Posted: Thu Jun 17, 2010 5:34 am |
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Thank you very much PCM!! It works perfect! Although with the "lcd_scroll_left" comand it scrolls right and with the "lcd_scroll_right" scrolls left!! But i changed the "lcd_send_byte(0, 0x1E);" and "lcd_send_byte(0, 0x18);" and now it's right!!
Thank you!  |
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