Thread: Need to display numbers that are passed as Literal ASCII characters to LCD

What shall I learn in order to send values from 0.00 to 5.00?

I'm working with they Hitachi 16x2 LCD display.
I've been sending/displaying literal values on it all day. Meaning,

Code:

SendCharater(unsigned char val)

where the variable val corresponds to the LCD character table.

I can also send Hello World to the display, like so:

Code:

void    putsXLCD(unsigned char *buffer){
    while(*buffer)                  // Write data to LCD up to null
    {
        while( BusyXLCD() );      // Wait while LCD is busy
        SendCharacter(*buffer); // Write character to LCD
        buffer++;               // Increment buffer
    }
    return;
    }

I could type in putsXLCD("5.00") in order to display it on the LCD, but how do I implement this automatically for values, e.g. 0.00 to 5.00?
It appears I can only pass literal values through the function SendCharacter, meaning that in order to display "0" I have to pass the value 0x30 (the hex value of "0" on the LCD Table).

My current thought process:
Much like passing "Hello World" in the function putsXLCD(), I need to assign a pointer that points at each value in the "array" that I need to send. E.g., I need to send 3.24, so I need to point to "3", fetch the corresponding hex value in the LCD table, in this case 0x34, and the pass this 0x34 into the SendCharacter function, and so on. So, if this is the case, how can I fetch the corresponding hex value?

Look to see if "ftoa" is supported if sprintf fails to work or exist.

Tim S.

I have used sprintf with XC8 before. Can you post your code?

You typed sprinft instead of sprintf: That is not in your code, right?

Also, your printf function outputs to where your want to -> All you would have to do is put your SendCharacter function into putch and you have printf

Look for "How Do I Use Printf to Send Text to a Peripheral" in manual - http://ww1.microchip.com/downloads/e...Doc/52053B.pdf

If you are using the LCD as your main output, setting it up for printf is what you would want to me doing