larger values on LED display

[hemnath]

Hi,

I have Four digit Seven segment LED display and my maximum decimal value is 32767. I thought to convert it to hex, so that the value can be displayed on the four digit seven segment display. Eg: 32767 in a Four Digit Seven Segment display.

32767 in decimal(5 digits) = 7FFF in hex(4 digits)

To display 4 digits on LED display, For decimal numbers I used this routine earlier,
digits[0] = (disp_value/1000)%10;
digits[1] = (disp_value/100)%10;
digits[2] = (disp_value/10)%10;
digits[3] = (disp_value%10);

How to do it for hex? kindly help me.

[temtronic]

quick answer...
use google ' convert decimal to hex ', lots of 'hits'.

I don't have code, or time to cut code though it is simple to do.
Perhaps someone else can walk you through it.
It's only 4 steps, 2 operations for each 'digit'.

[Ttelmah]

Don't get me wrong, but you don't actually need to do any conversion. The low 4bits of disp_val is digits[3] (disp_value & 0xF). The next nibble is digits[2] ((disp_value>>4)&0xF). The next nibble is digits[1] ((disp_value>>8)&0xF), while the last nibble is digits[0] ((disp_value>>12)&0xF).
There are 'trick' ways (in particular using swap), that can do this slightly more efficiently, but this is so much more efficient than %10 already that it probably isn't worth getting involved in these....