Discussion in "Embedded GSM Development" started by    Alvanbert    Feb 10, 2012.
Sat Mar 10 2012, 06:29 AM
#41
The reason for missing the 2nd and 4th lines are (my opinion) the 20x4 LCD adress ranges are different.

like this :

0,1,2...........17,18,19
64,65,.........81,82,83
20,21,.........37,38,39
84,85,.....101,102,103

After writing to position 19, you must jumpt0 64th position, so u need to command the LCD
to reposition to 64 and after writing to position 83 , u need to jump to 20th position.

So u can make a function for this... Hope i am not wrong



[ Edited Sat Mar 10 2012, 06:33 AM ]
Mon Mar 12 2012, 02:41 AM
#42
you're right firoz.. Alvanbert needs to write a function that takes care of printing string and wrapping them to new line when they reaches the end of first line or say 20 characters.
Mon Mar 12 2012, 11:26 AM
#43
Yes Ajay. Am really trying to figure out how to do that. Bt need ur help on this as well
Mon Mar 12 2012, 03:49 PM
#44
u can take 4 varialbles as LINE1 , LINE2, LINE3 and LINE4 and save ur message in them with 20 charactes each.
supose ur sms is in SMS_INFO character:

for(int i=0;i<20;i++)
    LINE1[i]=SMS_INFO[i];

for(int i=0,j=20;i<20;i++,j++)
    LINE2[i]=SMS_INFO[j];

for(int i=0,j=40;i<20;i++,j++)
    LINE3[i]=SMS_INFO[j];

for(int i=0,j=60;i<20;i++,j++)
    LINE4[i]=SMS_INFO[j];


then u can write a small routine that wil send all 4 variables to 4 lines.

LCD_4line(){
LCD_Add(0x00);
for(int i=0;i<20;i++)
      LCD_data(LINE1[i]);

LCD_Add(0x64);
for(int i=0;i<20;i++)
      LCD_data(LINE2[i]);

LCD_Add(0x20);
for(int i=0;i<20;i++)
      LCD_data(LINE3[i]);

LCD_Add(0x84);
for(int i=0;i<20;i++)
      LCD_data(LINE4[i]);
}

If i were to write , then i would do something as this. May be there are easy ways, but am not sure


[ Edited Mon Mar 12 2012, 04:11 PM ]
Mon Mar 12 2012, 04:10 PM
#45
Y do i write codes in long ways

hehe this is moe simple
LCD_4line()
{
LCD_Add(0x00);
for(int i=0;i<20;i++)
      LCD_data(SMS_info[i]);

LCD_Add(0x64);
for(int i=20;i<40;i++)
      LCD_data(SMS_info[i]);

LCD_Add(0x20);
for(int i=40;i<60;i++)
      LCD_data(SMS_info[i]);

LCD_Add(0x84);
for(int i=60;i<80;i++)
      LCD_data(SMS_info[i]);
}


Some one Give proper way here , else i might spam here with all sorts of stupid coding of mine


[ Edited Mon Mar 12 2012, 04:23 PM ]
Mon Mar 19 2012, 10:44 PM
#46
Thanks Alot firoz3321, your code worked just fine for me. Now i can display the whole message on the four lcd lines.

i however still have some issues. I would love the message to start from the last point on the last line and then scroll from down upwards both horizontally to the left and upwards with each word following each other. Is it possible.

Secondly, can someone write me a function to delete sms from sim memory after a specified period of time(e.g After 5 Hours). THANK YOU ALL FOR BEING HELPFUL.
Wed Mar 21 2012, 06:26 AM
#47
Great!. Feel free to share with us...
Wed Mar 21 2012, 03:07 PM
#48
what is the best way i can use to filter my messages as they are outputting to the lcd screen. i want it to only display the content between the"#" symbol and another "#" symbol at the end. i dont want it to display anything else.

so that only messages sent with # at the beginning and at the end can be displayed. pliz help
Sun Mar 25 2012, 05:38 PM
#49
@ Alvanbert
first step is to extract relevant message from sms
after that u has to check first # then display whole message till the 2nd #
i think when u extract message from sms
that will be ur real message that u want to display
i think no need of two #
Mon Mar 26 2012, 06:22 AM
#50
@Majoka how can i do this without using the #'s because my main aim is to only display the sent sms. I dnt wnt the display to include the date, time.... I wnt only the msg as sent by the user. Thanx

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ExperimenterUK
Thu Oct 30 2014, 06:02 PM
This is a chat box..create a thread if you need help...but we don't do homework
Tue Oct 28 2014, 07:33 PM
vinni
hi rickey...anyone got the pgm...pls gimme now
Tue Oct 28 2014, 06:35 PM
potla
hi vinni even i need that program. help me if you get it
Tue Oct 28 2014, 03:22 PM
vinni
1. Using a look-up table in Flash ROM and accumulator offset indexed addressing mode, write a program that acts as a timer. The timer should count from 0 to 59 seconds. After reaching 59, it should go back to 0 on the next second and continue to count up. The timer should use the seven-segment display. The look-up table should contain information on how to display the digits 0 – 9 on the seven-segment display
Tue Oct 28 2014, 03:22 PM
vinni
hello Rickey..i need this pgm very urgently
Tue Oct 28 2014, 01:42 AM
Boy Donald
Dear sir, thanks before. i have some project urgent for my school and my project need this digital countdown timer using 7 segmen display. but your project only show ten minutes countdown, i need your help, can you show me more to change the minute or set the time manually. thank you, sorry for disturbing you.
Tue Oct 28 2014, 01:32 AM
Boy Donald
dear sir
Tue Oct 28 2014, 01:19 AM
Boy Donald
Rickey you inspired me a lot but why i can not change the time ( minute
Sun Oct 26 2014, 02:51 AM
sandeep bankar
dear sir I m facing problem about..how to read number of incoming call in gsm 900 a. pls help how to read it in atmel avr microcontroller.
ajay_bhargav
Mon Oct 20 2014, 11:22 AM
@skrishna, please post in forum so we can help you better.

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