putting dec value on lcd

Sep 22, 2003 3 Replies
P

Hello all,



I am a virgin in this and doctoring around with ICC11 and some board. I have finally got the AD converter going and get the results via printf on the terminal screen. Now I want to put the result on the LCD. I have the AD result in an unsigned char variable (guess it is binary or hex) anyhow 8 bit for sure :)



#define LCDcmmd *(unsigned char *)0x1400 #define LCD_DATA *(unsigned char *)0x1401



Sending control codes for the LCD works ok . I can clear and position the cursor.



I want to display a decimal result of the content of the result register on the LCD. Easy to do that with printf to the terminal how do I do this for the LCD?



Some c sample would be appreciated.



Thanks for the help, gurus.



Peter


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W

on

One of the many ways to do it in C:

units = number %10; tens = (number-units) %100; hunderds = number/100;

to convert to ASCII: add '0' to each result

Wim

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S

As you seem to have printf() available on your platform, you must also have sprintf() available. Use this to first print the value to a buffer. Then copy the contents of the buffer to the LCD. You may need to substract an offset from the characters, compare the LCD datasheet to a 'normal' ASCII table.

Stef

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M

I wrote this in 1991 - let's hope it still works :)

#include char fms [10]; a = sprintf (fms, "%d:%.2d",((int) time/60), time%60); putslcd1 (fms);

The function "putslcd" just repeatedly calls the routine which prints a single character to the LCD until "putslcd" detects a zero in the string.

Mike Harding

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