Discussion in "Embedded GSM Development" started by    Alvanbert    Feb 10, 2012.
Fri Feb 24 2012, 12:57 PM
#21
hi guyz... Me too interested in dis project... I want to ask that is it possible to use proteus's Virtual hyperterminal for getting input from my real hardware GSM modem and simulate using it? Thnx
Mon Feb 27 2012, 03:43 AM
#22
Yes u can use proteus Virtual terminal
Mon Feb 27 2012, 07:48 AM
#23
continued in a seperate post : http://www.8051projects.net/forum-t52973-last.html
help me in dat..
Mon Feb 27 2012, 06:12 PM
#24
Hi guys. Am trying to display my messages on the lcd in moving format. Pliz guys help me out. How can this be done.
Tue Feb 28 2012, 09:07 AM
#25
First have u succeeded with SMS Reception and display the same on LCD.
Tue Feb 28 2012, 09:42 AM
#26
Yes kiran. Sorry i didnt tell u that. I can display the sms on lcd. Problem is if msg is a bit long. It gets cut off. So i thout displaying it in a moving format wud solve problem. If nt pliz give me some alternatives. Thanx
Tue Feb 28 2012, 05:04 PM
#27
I am sorry that i might be wrong, but this code worked for me :

for(int i=0; i<40; i++) 
{               
   LCDCmd(0x80);
  LCDWriteString("HELLO:");
  LCDCmd(0xC0);
  LCDWriteString("This is Feroz,Testing LCD scrolling CODE");	// Maximum 40 chars
  LCDCmd(0x1C);
  _delay_ms(200);
}//END For


[ Edited Tue Feb 28 2012, 05:05 PM ]
Wed Feb 29 2012, 11:51 AM
#28
@ firoz3321
u can take it as a reference

Wed Feb 29 2012, 05:42 PM
#29
Hi Guys, Below i have attached the code. it can read from address 1 t0 5 while displaying the message. But it can only display message in the first line of lcd. Can i mek it display same message in all lines i.e if its long.

Thanx Majoka AND Froz3321 for the code for ur help. The messages can scroll one at a time but not one after the other, i thout this was better. If u get the idea pliz help me edit this code accordingly. Thanks

#include <REGX52.H>


#define LCD P1
#define LCD_EN		0x80
#define LCD_RS		0x20
                     
//LCD Commands        

#define LCD_SETMODE		   0x04
#define LCD_SETVISIBLE	   0x08
#define LCD_SETFUNCTION	   0x28
#define LCD_SETDDADDR	   0x80

void delayms(unsigned char);
void delayus(unsigned char);
void lcd_init();
void lcd_reset();
void lcd_cmd (char);
void lcd_data(unsigned char);
void lcd_str (unsigned char *);
void clear(void);
void tx0(unsigned char);
void delay_sms (unsigned int);
void SMSString(char*text) ;
void init();
void read_text(unsigned char *);
unsigned int var,i,n;
unsigned char j,abc;
unsigned char idata msg1[150];
unsigned char rec_no[20];
unsigned char time_date[20];
void gsm_loop(unsigned int);

void serial () interrupt 4
{
msg1[abc]=SBUF;
abc++;
RI=0;
}

void main (void)
{

n=0x35;

gsm_loop(n);
delay_sms(2000);
}

void gsm_loop(unsigned int n)
{
  for(i=0x31;i<=n;i++)
  {
  clear();
  init();
  lcd_init();
  var=i;
  SMSString("AT\r"); // AT commands to initialize gsm modem
  delay_sms(1000);

  SMSString( "ATe0\r"); // turn off echo
  delay_sms(1000);

  SMSString( "AT&W\r"); // save settings
  delay_sms(1000);

  SMSString( "AT+CMGF=1\r"); // select text mode for sms
  delay_sms(1000);

  SMSString( "AT+CNMI=2,1,0,0,0\r"); // notification of new sms
  delay_sms(1000);

  SMSString( "AT+CMGR=");   // AT command to read sms
  tx0(var);
  SMSString("\r");

  IE=0X90;   // Enable serial interrupt
  delay_sms(2000);

  read_text(msg1);		// read sms and store in buffer msg1

  delay_sms(2000);			  
  IE=0X00;       // Disable all interrupt
            
  }
}


void init(void)
{
j=0;
abc=0;
TL1=0XFD; //9600 @ 11.0592
TH1=0xFD;
TMOD=0x20;
SCON=0x50;
TR1=1;
}

void SMSString(unsigned char* text) //function to send SMS using GSM modem
{
while (*text)
{
tx0(*text++);
}
}


void tx0(unsigned char x) //send data to serial port 0
{
EA=0;
SBUF=x;
while(TI==0);
TI=0;
EA=1;
}


void delay_sms (unsigned int count)
{
unsigned int i;                         // Keil v7.5a 
    while(count) {
        i = 115;
                while(i>
0) i--;
        count--;
}
}

void read_text( unsigned char *msg)
{
unsigned char *temp;
temp=msg;
do
msg++;
while(*msg!='#');
msg++;
do
*temp++=*msg++;
while(*msg!='#');       // reaching at end of message
*temp='\0';


lcd_cmd(0x80);
lcd_str(msg1);



         // array having message

}

void lcd_reset()
{
	LCD = 0xFF;
	delay_sms(40);
	LCD = 0x03+LCD_EN;
	LCD = 0x03;
	delay_sms(40);
	LCD = 0x03+LCD_EN;
	LCD = 0x03;
	delay_sms(5);
	LCD = 0x03+LCD_EN;
	LCD = 0x03;
	delay_sms(5);
	LCD = 0x02+LCD_EN;
	LCD = 0x02;
	delay_sms(5);
}


void lcd_init ()
{
	lcd_reset();
	lcd_cmd(LCD_SETFUNCTION);                    // 4-bit mode - 1 line - 5x7 font. 
	lcd_cmd(LCD_SETVISIBLE+0x04);                // Display no cursor - no blink.
	lcd_cmd(LCD_SETMODE+0x02);                   // Automatic Increment - No Display shift.
	lcd_cmd(LCD_SETDDADDR);                      // Address DDRAM with 0 offset 80h.
 }

 void lcd_cmd (char cmd)
{ 
	LCD = ((cmd >
>
 4) & 0x0F)|LCD_EN;
	LCD = ((cmd >
>
 4) & 0x0F);

	LCD = (cmd & 0x0F)|LCD_EN;
	LCD = (cmd & 0x0F);

    delay_sms(1);
}

void lcd_data (unsigned char dat)
{ 
	LCD = (((dat >
>
 4) & 0x0F)|LCD_EN|LCD_RS);
	LCD = (((dat >
>
 4) & 0x0F)|LCD_RS);
	
	LCD = ((dat & 0x0F)|LCD_EN|LCD_RS);
	LCD = ((dat & 0x0F)|LCD_RS);

    delay_sms(1);
}

void clear(void)
{
unsigned char a;
for(a=0;a<100;a++)
msg1[a]=0x00;
}

void lcd_str (unsigned char *str)
{
	while(*str){
		lcd_data(*str++);
	}
}

Thu Mar 01 2012, 01:11 PM
#30
Is above code is working fine at all time..
Try to send msgs continuously of 10msgs and see does it receives all of them.

Get Social

Information

Powered by e107 Forum System

Conversation

ExperimenterUK
Mon May 25 2015, 06:21 PM
@Subrat Sahu not a simple answer.Create a thread in "General help Guidance and Discussion" forum
Sun May 24 2015, 06:51 AM
Subrat Sahu
I have a confusion about 10 bit adc formula as describe bellow that resolution = Vref/1023 or Vref / 1024
ExperimenterUK
Sat May 23 2015, 08:54 PM
@utpal.. Create a thread in the Pic forum
Thu May 21 2015, 01:04 AM
utpal
i am a hobbist. i work on 8051. just i have started with pic 16f877. but a bitter experiance is going on. as i am programming any code to my pic877 and putting it in my board and it is working, but the 2nd time it is not taking any program,I have experimented just 7 new one pic mcus. result is the same. please tell me the reason. my programmer is TOP3000(universal programmer).
ajay_bhargav
Wed May 20 2015, 04:48 AM
@lak you can use the same code provided you are not using any s52 specific ports and registers.
Mon May 18 2015, 05:58 AM
lak
i used to develop a code for at89s52 shall i use the same code for at89c4051
Sun May 17 2015, 07:57 AM
Ayoosh
what if i have to rotate motor continuously at a step angle of 1.8 degree
ExperimenterUK
Fri May 15 2015, 06:02 PM
@oracle1946.. Post your question in the PIC forum
Fri May 15 2015, 03:48 AM
nadeem232
if some has solution kindly share solution Principles of Electric Circuits,by Thomas L. Floyd
oracle1946
Thu May 14 2015, 03:39 PM
I want to build a PIC16F684 sun logger using either a solar cell (0.5v solar cell or photoresistor). Any help out there?

Downloads

Comments

MuhammadTanvir
Sun May 24 2015, 11:02 AM
as_rog
Sun May 17 2015, 08:00 AM
oracle1946
Thu May 14 2015, 03:34 PM
kakaru32
Tue May 12 2015, 04:29 PM
Yateesh
Sat May 09 2015, 02:46 AM
scmg
Fri May 08 2015, 06:40 PM
OMERO
Fri May 08 2015, 11:53 AM
Carlos55
Fri May 08 2015, 02:14 AM

Online

Guests: 57, Members: 0 ...

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

Members: 37660
Newest member: MuhammadTanvir
Forum Activity
ExperimenterUK Avatar
Posted By ExperimenterUK
Mon May 25 2015, 06:16 PM
We need to do some simple tests.Get the speaker to...
mayank058 Avatar
Posted By mayank058
Mon May 25 2015, 04:57 AM
Dear sir, I am taking output from PI...
MuhammadTanvir Avatar
Posted By MuhammadTanvir
Sun May 24 2015, 11:11 AM
Hey guys !! Can somebody please share the proteus ...
ExperimenterUK Avatar
Posted By ExperimenterUK
Sat May 23 2015, 09:52 PM
Does the speaker work?.'Exactly' where on the boa...
ExperimenterUK Avatar
Posted By ExperimenterUK
Sat May 23 2015, 09:44 PM
For all your questions there is a proper, very tec...
mayank058 Avatar
Posted By mayank058
Thu May 21 2015, 04:46 AM
dear sir there is nothing to zip.I just...
ajay_bhargav Avatar
Posted By ajay_bhargav
Wed May 20 2015, 04:57 AM
can you zip your complete project and attach it he...
ajay_bhargav Avatar
Posted By ajay_bhargav
Wed May 20 2015, 04:46 AM
If you know how to drive 7-seg using an 8-bit port...
ajay_bhargav Avatar
Posted By ajay_bhargav
Wed May 20 2015, 04:42 AM
There was no proteus file included in the package,...
ankitbajaj01 Avatar
Posted By ankitbajaj01
Tue May 19 2015, 07:00 AM
Hello ExperimenterUK...Please guide me on above po...