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.

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Tue May 03 2016, 11:52 AM
Cecylka
Ogromne dzięki za ten artykuł. Treść stoi na nader wysokim poziomie i wiem, co mówię, albowiem sam interesuję się podobnymi zagadnieniami. W związku z tym jeśli ktoś chce się dowiedzieć więcej na temat opisanego przedmiotu to zachęcam do odwiedzin - kredyt123.pl - kredyt hipoteczny
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Wielkie dzięki za powyższy post. Treść stoi na niesłychanie wysokim poziomie i wiem, co mówię, gdyż sam interesuję się podobnymi zagadnieniami. Wobec tego jeżeli ktoś chce się dowiedzieć więcej w temacie opisanego przedmiotu to zachęcam do wejścia - kredyt123.pl - oddłużanie - Klaudyna -
ExperimenterUK
Thu Apr 28 2016, 01:15 AM
We don't provide project reports. We try to help you do your project
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abebe tigabu
help me by sending final thesis project automatoc green house effect control by arduino or by at89c51 microcontroller
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abhinav kumar
Hey there, i want to project report on the RFID BASED SECURITY SYSTEM using AVR microcontroler.please mail as soon as possible. Thank you
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umesh parekh
i want c code for rfid based car parking system using 8051 and parking slot indicator.if u have please email me
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Prakash Rao
i need to work on OCR for Numbers, could not find any such projects done using 8051
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hey i am new to embedded system and i want to pursue ms in embedded, i have 2 years before i can apply for ms.. in two years can i gain sufficient knowledge. i know c and c++
ExperimenterUK
Wed Apr 13 2016, 05:15 PM
@Suraj.. the method will work ,but edit to suit your compiler
Wed Apr 13 2016, 01:05 AM
Suraj Sridhar
Can I use the LCD Device driver code for STM32F401RET6?

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