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Hi
I did not know why this problem happened ,but I know it was because of using Flash Magic with 8051 XAG-49. I used WinISP and I did not face this problem again
Thanks a lot for all.
Hi
I tried to send 'U' character but i did not receive anything.
I replaced the microcontroller and programmed it normally. Therefore I do not think there is with the board. But I find that when I program the microcontroller with baud rate greater than 9600 it will stop working after few...
Hi
I am using 8051 XAG-49 family. This contain 64K byte flash program memory.
The schematic I am using for programming is shown in the attachment.
I am controlling PSEN and RST manually by switches but I replaced them just in case any problem with them. The baud rate used is 4800.I direct...
Hi dharanidhar
Thanks for replay
I am using Philips XAG49 microcontroller
The baud rate used was 4800.
I am using max 232 as a level converter , I replaced it when the first microcontroller stopped working.
The microcontroller do not have DTR,RTS pins or you mean other thing ?
Thanks
Added...
check 8051 working
Thanks for your replay
I will try to find it
but the strange thing I've used this programmer more than 100 time with the same microcontroller.
And the problem know with the second microcontroller is that it do not turn to ISP mode and still working with last program. Do you...
flash magic for 8051
Hi
I have a strange problem.
I am using Flash Magic to program a 8051 microcontroller.
While I am programming it reached to (0x13f0) the programming stopped then returned "Unable to communicate.(transmit/receive)" I reset the microcontroller then the programmer returned (...
gps tracking system
Hi
I tried to read data character after character Then I write this code #include <regxag49.h>
#include <stdio.h>
char message [800];
void read (unsigned char rch);
unsigned char rch;
unsigned int i,j,m;
void main(void)
{
WDCON =1;
WFEED1=0xa5...
gps tracking system problems
Hi
I tried to write a code just to read from UART0
#include<stdio.h>
#include<regxag49.h>
unsigned char receiveddata;
unsigned char array[10];
unsigned int i;
void main() interrupt 4
{
WDCON =0;
WFEED1=0xa5;
WFEED2=0x5a;
S0CON=0x52;
TMOD=0x20;
RTL1=238...
8051, gps
Hi
Actually I do not know why the MC connected with the computer .
When you receive the coordinates you should use a map like googlemaps. you can do it manually by putting the longitude and latitude , or you can do it automatically if you can deal with http files. Because googlemaps...
tracking sms sender
Hi
I tried to collect information from UART0 using (scon and gets) but I could not.
Can you give me if possible an example how to collect from UART)?
Thanks for your help
implmentation of gps in tracking system
Thanks a lot for your replay and the attachment is very useful.
I studied the NMEA protocol and the most useful sentence is start with $GPRMC which contain the minimum information required like time, date, status of signal (available or not), latitude...
sms tracking
Hi
I am trying to do this project using GPS+SMS modules and 8051 (XAG49 ) microcontroller with RIDE simulator using C language.
The idea is :
The SMS module receive a massage then the location send back to that sender .
Therefore I should connect the SMS and GPS module with the...
ride c compiler
Hi
I am new with microcontrollers.
I am doing a project ( GPS/SMS vehicle tracking system ) using XAG49 microcontroller with RIDE compiler.
Is there anyone have a C commands reference for this compiler?
Thanks a lot
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