sir can you give me coding for that? i am very very new to embedde c.
i got similar coding from efy. i did some changes. but it is for 8051. i am confused that how to covert that for atmega16 please help me…
coding is as bellow. i am unable to understand that how it works. means how mcu will know that msg has been recived, what it tells and how it will take action….
#include<reg51.h>
sbit rs=P3^7;
sbit rw=P3^6;
sbit e=P3^5;
sbit pump=P1^0;
void gsmcmdsend(unsigned char *cmd);
void cmm(char value);
void dat(char value);
void compare();
unsigned char card_id[96];
unsigned char header[]=”SRC”;
unsigned char gsm_cmd3[]=”AT&W”;
unsigned char gsm_cmd4[]=”AT+CMGF”;
void gsmcmdsend(unsigned char *cmd)
{
unsigned char i;
for(i=0;*cmd!=’ ’;i++)
{
SBUF=*cmd;
while(TI==0);
TI=0;
cmd++;
}
SBUF=0x0A;
while(TI==0);
TI=0;
SBUF=0x0D;
while(TI==0);
TI=0;
while(RI==0);
RI=0;
}
void delay(int count) //Function to provide delay
{
int i,j;
for(i=0;i<count;i++)
for(j=0;j<1275;j++);
}
void cmm(char value)
{
P2 = value;
rs=0;
rw=0;
e=1;
delay(1);
e=0;
delay(1);
return;
}
void dat(char value)
{
P2 =value;
rs=1;
rw=0;
e=1;
delay(1);
e=0;
delay(1);
return;
}
void lcdin()
{ cmm(0x38);
cmm(0x0e);
cmm(0x01);
cmm(0x06);
cmm(0x85);
return;
}
void recieve() //Function to recieve data serialy from RS232
{
unsigned char k;
for(k=0;k<=87;k++)
{
while(RI==0);
card_id[k]=SBUF;
RI=0;
}
}
void main()
{
int l,i;
P1=0x00;
lcdin();
TMOD=0x20; //Enable Timer 1
TH1=0XFD;
SCON=0x50;
TR1=1;
gsmcmdsend(gsm_cmd3);
cmm(0x01);
gsmcmdsend(gsm_cmd4);
cmm(0x01);
cmm(0x85);
for(i=0;i<3;i++)
{dat(header);}
cmm(0xc0);
while(1)
{
recieve();
for(l=83;l<=87;l++)
{
dat(card_id[l]);
}
compare();
}
}
void compare()
{
if ((card_id[83]==’p’)&&(card_id[84]==’u’) && (card_id[85]==’m’) && (card_id[86]==’p’) && (card_id[87]==’o’)&&(card_id[88]==’n’))
pump=1;
else if((card_id[83]==’p’)&&(card_id[84]==’u’) && (card_id[85]==’m’) && (card_id[86]==’p’) && (card_id[87]==’o’)&&(card_id[88]==’f’))
pump=0;
;
}
end; //end of program