Disply multiple int on 16X2 lcd

[skmdmasud]

Hi.
I am trying to display 4 different int variables in my lcd using just single display command to
save program memory.

The lcd library that i am using accepts the following to display int

LCDWriteIntXY(X,Y,VALUE,UNIT);
LCDWriteIntXY(2,0,a,4);
or
LCDWriteStringXY(0,1,"My Values");

I have four different int variable e.g. a,b,c and d.
a=1;
b=2;
c=999;
d=999;

I want to display this as following
| 1-2-999-999 |

How do i make it into a single char or string and display it.

Regards.

 

[Ian Rogers]

Use the sprintf() function.

sprintf( LCDBUFFER,"| %d-$d-%d_%d |", a,b,c,d);

LCDWriteStringXY(0,1,LCDBUFFER);

If this takes too much memory... write your own.

 

[skmdmasud]

Hi Ian
thanks for the code. For my implementation sprintf takes out more memory in .elf when i compile in Atmelstudio 6. I think i will use the LCD library command.

Thanks for your help.

 

[Ian Rogers]

I write my own routines for ASCII conversion

void printFloat(char * flt, long number, char digits)
	{
	if(number < 0)
		{
		number = ABS(number);
		}
	if(digits == 2)
		{
		flt[0] = number / 1000 + 48;
		if(flt[0] == 48) flt[0] = 0x20;
		flt[1] = ((number % 1000) / 100)+ 48;
		flt[2] = 46;
		flt[3] = ((number % 100) / 10)+ 48;
		flt[4] = (number % 10) + 48;
		flt[5] = 0;
		}
	else
		{
		flt[0] = number / 100 + 48;
		if(flt[0] == 48) flt[0] = 0x20;
		flt[1] = ((number % 100) / 10)+ 48;
		flt[2] = 46;
		flt[3] = (number % 10) + 48;
		flt[4] = 0;
		}
	}

You could tune this to do what you need it to do...

 

[skmdmasud]

Hi Ian
i get the idea.

Thanks.