Discussion in "Project Help" started by    Utsavi    May 17, 2017.
Wed May 17 2017, 11:01 AM
#1
Hello

I am working with PXAG49KBA. In my project I used Timer0 as Timer and Timer1 as counter.

The timer in my case is working perfectly (1msec timer).

I want to use Counter to count external frequency. I set Counter 1 in 16 bit non auto reload mode (Set TMOD to 0x50). I cleared TH1 and TL1. Set TR1. On every 500msec I read TH1 and TL1 and clearing it. Every time I got garbage values.

Do I required to use RTL1 and RTH1?

Is there any register I need to set in XAG-49?

In my previous project I worked on P89C51RD2 and used Timer1 as Counter, which is working ok. From the reading, XAG-49 and P89C51RD2 have same settings.

But still my counter is not working. Also I set T1OE bit to 0. Still not succeed.

Any clue on this?

Regards
Utsavi Bharuchwala







Wed May 17 2017, 07:38 PM
#2
Just from reading the data sheet you seem to doing the right thing.

> Do I required to use RTL1 and RTH1?
I don't think so.

Are the values in TH1 and TL1 correct ( or at least stable) if you use timer mode ( TMOD = 0x10).
How are you timing the 500msec ?
It seems most likely your counter input is faulty, where does it come from ?


Thu May 18 2017, 05:57 AM
#3
Hello

Thanks for reply.

No the input pin is not faulty. I measured the frequency from input pin, which is OK. I also toggle Input pin.

> I read counter on every 500msec with help of my 1msec Timer 0, by incrementing variable upto 500 and after reset it.

Can you provide me a demo of XAG-49 counter so that I can verify.

Regards
Utsavi Bharuchwala





Thu May 18 2017, 11:18 PM
#4


Can you provide me a demo of XAG-49 counter so that I can verify.

Utsavi


I have never used the XAG-49 so can't provide code known to work on it.

What signal are you using as input to the counter ?

Can you provide your code and a circuit diagram.

Get Social

Information

Powered by e107 Forum System

Conversation

Mon Jun 12 2017, 07:36 PM
madhusoodanan
how to receive string using 8051
ajay_bhargav
Thu Jun 08 2017, 05:48 PM
@Vinoth post in forum.
Wed Jun 07 2017, 06:40 AM
vinothkannan
how interface eprom in this code
Thu May 25 2017, 05:25 AM
Monir Hossain
Can i change the 7-Segment are common pin ? And how to?
Mon May 08 2017, 12:45 PM
ivan muvunyi
please can you send me wiring diagram for automatic control of 3 phase induction motor for production of maize flour
Wed May 03 2017, 08:39 PM
imran qureshi
hello friend
Sun Apr 30 2017, 05:49 AM
Lijin G Varghese
Can u send me the circuit diagram for Program to interface GSM Module with 8051 microcontroller (AT89C51) using PC and LCD
Fri Apr 28 2017, 03:47 PM
SANDEEP T S
I need pcb wizard 3.5 version kindly send valid link of yours
ExperimenterUK
Mon Apr 17 2017, 11:56 PM
Sorry..We had a problem with registration.Confirmation emails were not sent.Please re-register
Thu Apr 13 2017, 07:29 PM
Piyush Aughad
I want circuit & program for radar detection using Microcontroller 8051

Downloads

Comments

richard1976
Sat Jun 24 2017, 05:48 PM
DruvaN
Wed Jun 21 2017, 11:44 AM
lalala
Tue Jun 20 2017, 11:05 PM
Siddh@
Tue Jun 20 2017, 07:47 AM
firdaus0hsem
Sat Jun 17 2017, 04:53 PM
amir9297
Fri Jun 16 2017, 05:44 AM
madhusoodhanan
Mon Jun 12 2017, 07:31 PM
Aminookano
Sun Jun 11 2017, 05:50 AM

Online

Guests: 39, Members: 0 ...

most ever online: 182184
(Members: , Guests: 182184) on 06 Aug 2010: 05:37 AM

Members: 37847
Newest member: richard1976
Forum Activity
ExperimenterUK Avatar
Posted By ExperimenterUK
Mon Jun 26 2017, 08:42 PM
I have attached a demonstration file.It will echo ...
richard1976 Avatar
Posted By richard1976
Sat Jun 24 2017, 08:47 PM
Hi can you tell me how to send and recieve usart d...
ExperimenterUK Avatar
Posted By ExperimenterUK
Sat Jun 24 2017, 08:24 PM
HiUnfortunately there is too much code here to wor...
richard1976 Avatar
Posted By richard1976
Sat Jun 24 2017, 06:01 PM
hi i have written this programme and can send data...
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Jun 23 2017, 08:19 PM
>Should I need to check PWR_VLD bits every time on...
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Jun 23 2017, 07:42 PM
I would say yes, but data transfer will be slower ...
Utsavi Avatar
Posted By Utsavi
Thu Jun 22 2017, 12:14 PM
Hello ExperimenterUK, Thanks for your support. Fro...
DruvaN Avatar
Posted By DruvaN
Wed Jun 21 2017, 11:51 AM
Is it possible to Use 8051 bit-banging method to p...
ExperimenterUK Avatar
Posted By ExperimenterUK
Tue Jun 20 2017, 06:27 PM
You could start by looking at this tutorial on ke...
firdaus0hsem Avatar
Posted By firdaus0hsem
Sat Jun 17 2017, 04:58 PM
I have an issue regarding how to use 4x3 keypad to...