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Hi, I am interfacing GSM modem with 8051 mc. I am able to send message from gsm modem by giving command through microcontroller. but i am not able to read message from gsm modem and cannot display it on LCD. I donot want to use computer in between. Please help me.
i hav searched but i didn't get even one sample. this is my code: #include<reg51.h> #include<stdio.h> #include<string.h> void MSdelay(unsigned int); void serial_init(void); void trans(unsigned char); void trans_string(char *); void gsm(); void lcdinit(unsigned char[]); void lcddata(unsigned char); unsigned int i,j; sbit rs = P2^0; sbit rw = P2^1; sbit en = P2^2; unsigned char mydata[]={0x38,0x0E,0x01,0x06};
void main() { IE=0X90; P1=0x00; lcdinit(mydata); serial_init(); gsm(); while(1); } void serial_init(void) { TMOD=0X20; TH1=0XFD; SCON=0X50; TR1=1;
} void lcdinit(unsigned char cmd[]) { unsigned int i; for(i=0;i<4;i++) { P1=cmd[i]; rs=0; rw=0; en=1; MSdelay(5); en=0; MSdelay(5); } } void lcddata(unsigned char a) { P1=a; rs=1; rw=0; en=1; MSdelay(5); en=0; MSdelay(5); } void MSdelay(unsigned int itime) { for(i=0;i<itime;i++) for(j=0;j<1275;j++); }
void gsm() { trans_string("AT\r"); MSdelay(5); trans_string("AT+CMGF=0"); trans_string("\r"); MSdelay(5); // trans_string("AT+CMGS=""+918983513833"); // trans_string("\r"); // MSdelay(5); // trans_string("Santa ne apni car k niche kutte ko leta hua dekha,to kutte ko ek dum se kheecha or kaha- bahar nikal saale, bada aaya mechenical engineer banne."); // trans(0x1A); trans_string ("AT+CMGR=1"); trans_string("\r"); MSdelay(5); }
void trans_string(char *p) { while(*p!='\0') { SBUF = *p ; IE=0x00; while (TI==0); TI=0; IE=0X90; p++; } }
void serial0() interrupt 4 { unsigned char a; if(TI == 1) { TI=0; } else { a=SBUF; lcddata(a); RI=0; } } /*void trans(unsigned char a) { SBUF=a; IE=0x00; while(TI==0); TI=0; IE=0x90; } */
this is my code:
code???
code is formatted and commented
Erik
Obviously your search was as thorough as your attention to the instructions on how to post source code:
www.danlhenry.com/.../keil_code.png