Displaying the TH0, ThL0 value of at89s52 on 2x16 LCD

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eehero

Joined: 23 Nov 2005
Posts: 232
Helped: 9
Location: Libya

17 Oct 2006 9:35 Displaying the TH0, ThL0 value of at89s52 on 2x16 LCD

Hi all, i am going to use timer 0 of At89s52 as an event counter, after counting i have to read the timer value using the following code:

loop: mov a,th0
mov r6,tl0
cjne a,th0,loop
mov r7,a

finally i get 16 bit data in r6, r7.
how i can display the counting value in r6, r7 on a 2x16 LCD

IanP

Joined: 05 Oct 2004
Posts: 6490
Helped: 1542
Location: West Coast

17 Oct 2006 11:39 Re: Displaying the TH0, ThL0 value of at89s52 on 2x16 LCD

Here is a tutorial on 8051 and 2 x 20 LCD ..
http://www.8052.com/tutlcd.phtml

Using examples of codes from this tutorial compose the top line as: TH0 = "value from R6" and the bottom line as: TL0 = "value from R7" , or whichever way you like ..

Regards,
IanP

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BABESH

Joined: 27 Sep 2005
Posts: 118
Helped: 10

17 Oct 2006 12:02 Re: Displaying the TH0, ThL0 value of at89s52 on 2x16 LCD

First u need to convert hex value to decimal and then to ASCII
then display it.

It seems it is a 16 bit value so 16-bit hex to decimal conversion need to be done.
all the best

-- babesh