Discussion in "Project Addition or Changes" started by    bgk3678    Nov 4, 2018.
Sun Nov 04 2018, 02:48 PM
#1
#include<reg51.h>
unsigned int data_out,command=0x80,temp,r;
sfr lcd_data_pin=0x90; //P1 port
sbit rs=P2^0; //Register select
sbit rw=P2^1; //Read/Write
sbit en=P2^2; //Enable pin
//unsigned char match;
unsigned char m,key,count,index=3,k,i1,x1;
unsigned char x[100];


void delay1(unsigned int itime )
{
unsigned int i,j;

for (i=0;i<itime;i++)
for (j=0;j<1275;j++);
}

void lcd_command(unsigned char comm) //Lcd command funtion
{
lcd_data_pin=comm;
en=1;
rs=0;
rw=0;
delay1(1);
en=0;
}

void lcd_data(unsigned char disp) //Lcd data function
{
lcd_data_pin=disp;
en=1;
rs=1;
rw=0;
delay1(1);
en=0;
}

lcd_string(unsigned char *disp) //Function to send string
{
int x;
for(x=0;disp[x]!=0;x++)
{
lcd_data(disp[x]);
}
}
void lcd_ini() //Function to initialize the LCD
{
lcd_command(0x38);
delay1(5);
lcd_command(0x0F);
delay1(5);
lcd_command(0x80);
delay1(5);
}



void serialcom()
{
TMOD=0x20;
TH1=0xFD;
SCON =0x50;
TR1=1;
}


void serial(unsigned char x)
{
SBUF=x;
while(TI==0);
TI=0;
}
unsigned rx_data(void)
{
while(RI == 0); // WAIT UNTIL DATA IS RECEIVED
RI = 0; // CLEAR FLAG
return SBUF; // RETURN SERIAL DATA

}

void send2gsm(char *aaa)
{
unsigned int i;
for(i=0;aaa[i]!='\0';i++)
{
serial(aaa[i]);
}
}

void main()
{
//int l;
TMOD=0x20; //Enable Timer 1
TH1=0XFD;
SCON=0x50;
TR1=1; // Triggering Timer 1
lcd_ini();
delay1(200);

lcd_command(0x81); //Place cursor to second position of first line
//lcd_string("gsm3 interface: ");
delay1(200);
lcd_command(0x80);
lcd_string(" bgk GSM ");
lcd_command(0xc1);
serialcom();
send2gsm("AT");
serial(0x0D);
serial(0x0A);

delay1(2);
send2gsm("AT+CMGF=1");
serial(0x0D);
serial(0x0A);

delay1(2);








while(1)
{
send2gsm("AT+CMGR=1");
serial(0x0D);
serial(0x0A);





while(rx_data() !='+' );


for(i1=0;i1<40;i1++)

{
x[i]=rx_data();
}
delay1(20);

for(i1=0;i1<40;i1++)
{
lcd_data(x[i]);


delay1(20);


}


}
}
Sun Nov 04 2018, 02:52 PM
#2
sir ,
as I have posted the code ,it is not displaying the message from second line actually message is in second line
Tue Nov 06 2018, 06:10 PM
#3
I got this output in Proteus.



What are you expecting to happen ?


[ Edited Thu Nov 08 2018, 04:50 AM ]
Sun Nov 11 2018, 07:25 AM
#4
sir,Thank you for your response .The bgk GSM is the starting message will display on LCD, after that message sent by mobile will be displayed on LCD.
Sun Nov 11 2018, 04:03 PM
#5
I was just passing through looking for something else and noticed your post.

I'm not familiar with the GSM300 but a couple of things stand out from the code in the first post.

1) Some LCD displays have a small setup time from RS and RW to the leading edge of EN so it would be safer to put "en=1" after setting "rs" and "rw" in lcd_command() and lcd_data().
eg:
rs=0;
rw=0;
en=1;

2) In main() the code uses "i1" as the variable in the for loops but "i" as the variable for indexing the array x[].
This could just be a typing mistake in the first post or possibly the source of the problem.



[ Edited Sun Nov 11 2018, 04:03 PM ]
Mon Nov 12 2018, 01:21 AM
#6


2) In main() the code uses "i1" as the variable in the for loops but "i" as the variable for indexing the array x[].
This could just be a typing mistake in the first post or possibly the source of the problem.

wimac


Thanks for the comments.
Actually the missing "1" is due to the way the website handles text.
For some reason it deletes that "1".


[ Edited Tue Nov 20 2018, 05:39 AM ]
Mon Nov 19 2018, 01:11 AM
#7
I used your code in a Proteus simulation that can simulate a very simple modem.
Here is the result.
The Terminal box on the left is output from the 8051.
At the bottom is the modem's reply.

As you can see, you should get some text on line 2.
Because of the way the LCD displays text, more text would appear on line 4 of a 4 line display.
You have to display the text in chunks ,16 chars for 16 char wide displays, 20 for 20.
Move the cursor to a new line for each chunk.




[ Edited Tue Nov 20 2018, 05:39 AM ]

Get Social

Information

Powered by e107 Forum System

Conversation

Thu Jun 11 2020, 06:27 AM
anudee
sir could please send the code for I2C and wifi interfacing with 8051
scena
Tue May 19 2020, 10:29 PM
Does anyone have microcontroller programming software for STC15F104W (core 8051, 4 k, 128 byte, 6 I/O pin, UART ... DIL8), that works?
Sat May 02 2020, 07:38 PM
Tamu Gurung
Hi I am looking for a assembly language program for a digital decimal counter. Time counts max limit of 2 mins starting from 2.00 mins and ending at 0.00. time is to be displayed on 4 7-segment LED displays. Edsim51 simulator to be used. Thanks
Wed Mar 25 2020, 01:39 PM
Tajammul
Sir kindly send the code file i2c for 8051
ExperimenterUK
Fri Mar 13 2020, 10:36 PM
@ Rohitnani,ABEBE..which project ?
Fri Mar 13 2020, 12:55 PM
ABEBE
how can get hadwere of this project
Rohitnani
Sat Mar 07 2020, 05:11 PM
Sir, Could you please send me the zip file input password....
Wed Feb 26 2020, 04:58 PM
Peter Parker
Is it possible to send multiple messages using only 1 GSM module?
Sat Feb 01 2020, 10:12 AM
Pearl Olin
Hello,
Wed Jan 22 2020, 06:16 PM
MINU CHAUDHARY
I m getting errors while simulation process during interfacing socket output and lcd... Can i get the report of ur project which is same as us.

Downloads

Comments

Mirza123
Thu Jun 25 2020, 03:46 PM
eunicelove124
Mon Jun 22 2020, 03:03 PM
cerouno
Tue Jun 16 2020, 05:10 PM
Marce
Sat Jun 13 2020, 09:43 PM
Davidthils
Thu May 21 2020, 12:44 PM
Jakeror
Thu May 21 2020, 01:28 AM
motorCar
Wed May 20 2020, 07:05 PM
Vordrync
Wed May 20 2020, 11:52 AM

Online

Guests: 44, Members: 0 ...

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

Members: 38215
Newest member: Mirza123
Forum Activity
ExperimenterUK Avatar
Posted By ExperimenterUK
Wed Jul 01 2020, 11:07 PM
PS: I am a new learner thats why my question may s...
Mirza123 Avatar
Posted By Mirza123
Wed Jul 01 2020, 02:05 PM
Thanks for the assistance. I have read the data sh...
ExperimenterUK Avatar
Posted By ExperimenterUK
Wed Jul 01 2020, 10:12 AM
See section 15 (Ports) of the data sheet. ...
wimac Avatar
Posted By wimac
Tue Jun 30 2020, 10:05 AM
How did you know that it is not 8051. Mirza123It i...
Mirza123 Avatar
Posted By Mirza123
Tue Jun 30 2020, 08:39 AM
It seems ports on the AT89LP2052 is not like on th...
ExperimenterUK Avatar
Posted By ExperimenterUK
Tue Jun 30 2020, 08:34 AM
It seems ports on the AT89LP2052 are not like on t...
Mirza123 Avatar
Posted By Mirza123
Thu Jun 25 2020, 04:07 PM
Hello!i am trying to use AT89LP2052 ( AT89LP2052 h...
ExperimenterUK Avatar
Posted By ExperimenterUK
Wed Jun 17 2020, 09:42 PM
It is about capacitor? i should put it between Vcc...
cerouno Avatar
Posted By cerouno
Wed Jun 17 2020, 10:37 AM
Take another look at the power supply to the LCD.A...
ExperimenterUK Avatar
Posted By ExperimenterUK
Wed Jun 17 2020, 02:01 AM
Take another look at the power supply to the LCD.A...