how to display a value in LCD

[tst]

I modified from cytron source code

For example,
unsigned int distance = 0;
SetCurXLCD(0);
distance = distance + 1; //for each loop
putrsXLCD(distance);

RESULT:
the LCD unable to display the proper value, it become unknown symbol.
If i use putcXLCD(distance) also cannot.
If i use putrsXLCD("1") then can show but this method not efficient cause i have a lot of value need to display using loop.

Question:
How to display the content inside of variable distance? for example 1, 2, 3...up to 100? (actually i would like to have decimal point for example 1.5, 2.0, 2.5...)

Can I to convert the value inside the variable of distance into STRING format so that i can display using putrsXLCD(distance)? But I duno how to convert. =.="

Thanks..

[yonghui]

hi,

the LCD accept ascii characters and decode to the character according to the table in the datasheet,

when u send in numbers, it will treat it as ascii value, not the numeric value.

example:

if u wan to display 12


12/10=1;

offset +1 from the ascii table then send the ascii value of 1 to the LCD
12-10=2;
offset+2 from the ascii table then send the ascii value of 2 to the LCD




regards,
yh

[tst]

oic.. thanks yh.

[ABSF]

Take a look on the P18 & 19 of the datasheet here:

http://www.stanford.edu/class/ee281/han ... asheet.pdf

There are 2 types of ROM codes in HD44780 - ROM A00 & A02. So if you're getting graphic characters as you mentioned in your post you might be have ROM code A02. If the ASC code you sent is above 0x80, it should be Japanese characters.

Did you refer to the PR12 project code for RTC? There is an example on how to convert decimal to ASCII. Very nice codes - "send_dec".

Allen

[shahrul]

See example I display number here.

It need to convert the integer.

CODE: SELECT_ALL_CODE

void convert(int no, char base)
{char i;
for(i=0;i<=9;i++) di[i]=0;
i=0;
do{
   di[i]=no%base;
   no=no/base;
   i=i+1;}
while(no!=0);
}


[sich]

Did you refer to the PR12 project code for RTC? There is an example on how to convert decimal to ASCII. Very nice codes - "send_dec".

Glad to know that our hard work pays off! Really happy when people find what we did is useful

[tst]

yeah...I solve the problem already. Thanks everyone.

[PICTRAIL]

Please can someone help on this LCD error... My 2x16 LCD can only display black boxes on the first row but it's not displaying my real message. I would like to check is anyone can help.

[Lam]

My 2x16 LCD can only display black boxes on the first row but it's not displaying my real message.

I faced this problem too! Spend 2weeks+ time but still can't solve the problem. Hope anyone here can advice! =)

[hyng]

My 2x16 LCD can only display black boxes on the first row but it's not displaying my real message.

I faced this problem too! Spend 2weeks+ time but still can't solve the problem. Hope anyone here can advice! =)

Please describe more about how you were connect the LCD. What hardware, microcontroller and code you use.
Photo of the connection also is helpful.