Trouble In Sending An Sms To Notice Boarad

Asked by Khan Kafeel Mail k.k977377@gmail.com Location India

Hardware: Atmel At89c51 Software: C Code Using Kiel As Compailer.

1st thing that I want to mentioned here whenever i am sending sms through mob it should display the msg but it no showing anything please tell me waht to do...many time i am geeting "ddddddddddd" on my lcd i have make the conection according to diagram.. as i have 2 terminal one hqve 3 pin rx tx gnd and another are rs232 so should i connect my max to Rx Tx Gnd terminal or dirctly to rs232 terminal?
Notice board using gsm..
For any more deatil you can reffer electronichub
http://www.electronicshub.org/wireless-electronic-notice-board-using-gsm/

from there only i made copy...

Images

trouble in sending an sms to notice boarad

Program

while (rx_data() ! = 0x0d);                     

while (rx_data() ! = 0x0a);                      

if (rx_data() == ‘+’)

{

if (rx_data() == ‘C’)

{

if (rx_data() == ‘M’)

{

if (rx_data() == ‘T’)

{

if(rx_data()==’I’)

{

while (rx_data() != ‘,’);

a = rx_data ();

delay_ms (10);

tx_string (“at”);

tx_data (0x0d);

tx_data (0x0a);

tx_string (“at + cmgf =1”);

tx_data (0x0d);

tx_data (0x0a);

tx_string (“at + cmgr =”);

tx_data (a);

tx_data (0x0d);

tx_data (0x0a);

while (rx_data() ! = 0x0a);

while (rx_data() != 0x0a);

while (rx_data() ! = 0x0a);

for (i=0; i<15; i++)

{

read [i]= rx_data();

}

lcd_stringxy(1,0,read);

delay_ms (5000);

}

}

}

}

}

Replies

R Avinash Gupta

2017-03-18 06:16:14

See this page
http://store.extremeelectronics.co.in/GSM-Connected-Notice-Board.html