Simple, but not geting there yet - Text strings

hi there,

been reading forum while. got arduino , love it.
got lcd working. want improve it.
i have 16 chars in lcd, want display 24... hum.. scroling thought!

since text wana scroll in byte variables, first must convert them in text, , add string scroll in lcd, right?

well it's easier do... heeelppp please :s

code: [select]


#include <lcd4bit_mod.h>

byte second=0;
byte minute=0;
byte hour=0;
byte dayofweek=1;
byte day=1;
byte month=1;
byte year=10;


void setup(){
 
   serial.begin(19200);
lcd.init();
lcd.clear();
lcd.printin("***lcd on***");
delay(200);

}



void loop(){

char* dias [] ={" domingo"," segunda"," terça"," quarta"," quinta"," sexta"," sábado"};
     
//day=0; rtc returns days 0 7, sunday, monday..etc.



char temp="";
char message[24];

sprintf(message, "%i:%i %c %i-%i-%i", hour,minute, dias[dayofweek],day,month,year);
//  desired result line below
// char message[] = "12:12 segunda 01-10-2010";





int message_length = sizeof(message) - 1;
const int display_width = 15;
int g_nposition = 0;

 int i;
    if(g_nposition < message_length - display_width)
    {
          for(i=0; i<display_width; i++)
          {
           lcd.cursorto(i, 0);                
           lcd.printin(message[g_nposition + i]);
          }
    }
    else
    {
          int nchars = message_length - g_nposition;
          for(i=0; i<nchars; i++)
          {

           lcd.cursorto(i, 0);                
           lcd.printin(message[g_nposition + i]);
          }

          for(i=0; i<(display_width - nchars); i++)
          {
           lcd.cursorto(i, 0);                
           lcd.printin(message[g_nposition + i]);
          }
    }

    g_nposition++;
    if(g_nposition >= message_length)
    {
          g_nposition = 0;
    }

    delay(500);
   
}



for waiting home after work , see stand.. eehehhe

code: [select]

char temp="";
char message="";

can't assign string char.. reserve space like:

code: [select]

char message[24];

code: [select]

temp=char(hour);

casting byte char doesn't here (both 8-bit, difference char can negative). take @ sprintf

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