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sms control relays pic16f887

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tofigg

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hello everybody
im doing project about controlling relays by sms and i wrote my code and couldnt get it work and i need help plz if anyone know anything about it help me
i should read the sms and then check if its a valid command from the user then operate the specific order for that command
external ocs :7.372M
buad rate: 9600
gsm modem: sim300
pic16f887
Code C - [expand]
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unsigned char uart_rd;
unsigned char text;
char K;
unsigned char a[4];
int i=0;
 
 
 
 void SMS(){
 for(i=0;i<3;i++)
 {
 a[i]=UART1_Read();
 }
 
if ((a[0] == 'A') & (a[1] == 'B') & (a[2] == 'C'))
   PORTD=1;
if ((a[0] == 'X') & (a[1] == 'Y') & (a[2] == 'Z'))
   PORTA=1;
  UART1_Write_Text("AT+CMGD=1");
                  UART1_Write(13);
                  UART1_Write(10);
                   Delay_ms(500);
}
 
 
void main() {
 
 
                 PORTA = 0xFF;
                 PORTB = 0xFF;
                 ANSEL  = 0;                        // Configure AN pins as digital I/O
                 ANSELH = 0;
                 TRISD  = 0x00;    // making port as output
                 PORTD  = 0x00;       // making port as output
 
           
             
             
              UART1_Init(9600);
               Delay_ms(1000);
               
             UART1_Write_Text("AT");
                UART1_Write(13);
                UART1_Write(10);
                 Delay_ms(2000);
 
               UART1_Write_Text("AT+CMGF=1");
                  UART1_Write(13);
                  UART1_Write(10);
                   Delay_ms(2000);
                   
                    UART1_Write_Text("AT+CMGD=1");
                  UART1_Write(13);
                  UART1_Write(10);
                    Delay_ms(500);
 
 
                  while (1) {
 
 
                    
                    UART1_Write_Text("AT+CMGR=1");
                     UART1_Write(13);
                     UART1_Write(10);
                     Delay_ms(500);
                     
                     
                     UART1_Read_Text(a, "*", 200); // reads text until '*' is found
 
                      {
                         SMS();
 
                         }
                           UART1_Write_Text("AT+CMGD=1");
                            UART1_Write(13);
                             UART1_Write(10);
                               Delay_ms(100);
 
                             }
                             
                             }
 

do a serach in the forum before posting the thread,,, it is already answered many times..... see the bottom of the page where it gives links related to your post and so a good search in the forum........
 

i have read everything in this forum about my problem and nobody gives answer if u know anything help
 
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    J

    judfid

    Points: 2
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ppl any help plz

Last warning for using against sms or short hand typing language....
this forum is not for lazy people..
all your post will be deleted if continued further.. read the rules of the forum ...
Click to expand...
 

UART1_Read_Text(a, "*", 200);
Click to expand...
I don't know why you read uart until found *, because the AT command not replay this character.

The way you read sms also, I think wrong. The AT command not give direct sms output. It have some other data.
For reference code, you can see here using Hi-Tech.
 
  • Like
Reactions: tofigg

    T

    tofigg

    Points: 2
    Helpful Answer Positive Rating
thank you for ur reply actually what m doing now is to find the delimiter which is in the end of the sms and then go to read it
btw i couldnt open ur link can u post it again plz
thank u so much
 

The link can open now.
 

    V

    Points: 2
    Helpful Answer Positive Rating
if you know all the posts and knew where is the answer for my problem post it here of don't reply again ckshivaram
thank you
 

if you know all the posts and knew where is the answer for my problem post it here of don't reply again ckshivaram
thank you
Click to expand...

As ckshivaram said we dont spoon feed here. If you really need help follow the rules and obey the moderators. Else...
 

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