Koneksi Mikrokontroler ATmega8535 Dengan Modul GSM Fastrack

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Koneksi Mikrokontroler ATmega8535 Dengan Modul GSMFastrack M1306B

JANUARY 3, 201251 COMMENTS

Spesifikasi

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Konfigurasi RS232 yang saya gunakan seperti biasanya TX ke RX device dan RX ke TX device, tapi ada tambahan

yaitu pin 7 dan 8 disambungkan. USART Baud Rate: 115200. Berikut keterangan pin konektor DB9.

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Pin

No.

Name Dir Notes/Description

1 DCD IN Data Carrier Detect. Raised by DCE when modem

synchronized.

2 RD IN Receive Data (a.k.a RxD, Rx). Arriving data from DCE.

3 TD OUT Transmit Data (a.k.a TxD, Tx). Sending data from DTE.

4 DTR OUT Data Terminal Ready. Raised by DTE when powered on. In

auto-answer mode raised only when RI arrives from DCE.

5 SGND - Ground

6 DSR IN Data Set Ready. Raised by DCE to indicate ready.

7 RTS OUT Request To Send. Raised by DTE when it wishes to send.Expects CTS from DCE.

8 CTS IN Clear To Send. Raised by DCE in response to RTS from

DTE.

9 RI IN Ring Indicator. Set when incoming ring detectedused for

auto-answer application. DTE raised DTR to answer.

Berikut adalah contoh kode koneksi menggunakan serial RS232 antara modem dan mikrokontroler atmega8535

dengan tambahan LCD 216 menggunakan compiler CodeVisionAVR. Perintah menggunakan AT Command.

Inisialisasi

void sms_init()

{

printf("ATE0"); //set command tanpa echo

putchar(0x0D);//ENTER

while(getchar()!='K'){}; //menunggu OK

while(getchar()!=0x0A){}; //menunggu new line

delay_ms(500);

}

Kirim SMS ukuran 1 byte

void send_sms(char flash *fmtstr1, char fmtstr2)

{

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printf("AT+CMGF=1"); //set sebagai pesan text

putchar(0x0D);//ENTER

while(getchar()!=0x0A){}; //menunggu new line

while(getchar()!=0x0A){}; //menunggu new line

delay_ms(500);

printf("AT+CMGS=\""); //perintah kirim sms tanpa memasukan ke memory

pesan

printf(fmtstr1); //kirim nomor tujuan

printf("\"");

putchar(0x0D);//ENTER

while(getchar()!=0x20){}; //menunggu spasi

delay_ms(500);

putchar(fmtstr2); //pesan kode ukuran 1 byte

putchar(0x1A); //kirim Ctrl+z

while(getchar()!=0x0A){}; //menunggu new line

while(getchar()!=0x0A){}; //menunggu new line

while(getchar()!=0x0A){}; //menunggu new line

while(getchar()!=0x0A){}; //menunggu new line

delay_ms(500);

printf("AT+CMGD=1"); //hapus memori pesan urutan satu

putchar(0x0D);//ENTER

while(getchar()!=0x0A){}; //menunggu new line

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while(getchar()!=0x0A){}; //menunggu new line

delay_ms(500);

printf("AT+CMGD=2"); //hapus memori pesan urutan dua

putchar(0x0D);//ENTER

while(getchar()!=0x0A){}; //menunggu new line

while(getchar()!=0x0A){}; //menunggu new line

delay_ms(500);

printf("AT+CMGD=3"); //hapus memori pesan urutan tiga

putchar(0x0D);//ENTER

while(getchar()!=0x0A){}; //menunggu new line

while(getchar()!=0x0A){}; //menunggu new line

delay_ms(500);

}

Kirim Text SMS

void send_sms_txt(char flash *fmtstr1, char flash *fmtstr2)

{

printf("AT+CMGF=1"); //set sebagai pesan text

putchar(0x0D);//ENTER

while(getchar()!=0x0A){}; //menunggu new line

while(getchar()!=0x0A){}; //menunggu new line

delay_ms(500);

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printf("AT+CMGS=\""); //perintah kirim sms tanpa memasukan ke memory

pesan

printf(fmtstr1); //kirim nomor tujuan

printf("\"");

putchar(0x0D);//ENTER

while(getchar()!=0x20){}; //menunggu spasi

delay_ms(500);

printf(fmtstr2); //pesan text

putchar(0x1A); //kirim Ctrl+z

while(getchar()!=0x0A){}; //menunggu new line

while(getchar()!=0x0A){}; //menunggu new line

while(getchar()!=0x0A){}; //menunggu new line

while(getchar()!=0x0A){}; //menunggu new line

delay_ms(500);

printf("AT+CMGD=1"); //hapus memori pesan urutan satu

putchar(0x0D);//ENTER

while(getchar()!=0x0A){}; //menunggu new line

while(getchar()!=0x0A){}; //menunggu new line

delay_ms(500);

printf("AT+CMGD=2"); //hapus memori pesan urutan dua

putchar(0x0D);//ENTER

while(getchar()!=0x0A){}; //menunggu new line

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while(getchar()!=0x0A){}; //menunggu new line

delay_ms(500);

printf("AT+CMGD=3"); //hapus memori pesan urutan tiga

putchar(0x0D);//ENTER

while(getchar()!=0x0A){}; //menunggu new line

while(getchar()!=0x0A){}; //menunggu new line

delay_ms(500);

}

Menerima pesan ukuran 1 byte

char receive_sms()

{

char data;

printf("AT+CMGR=1"); //cek memori pesan datang urutan 1

putchar(0x0D); //ENTER

while(getchar()!=0x0A){}; //menunggu new line

while(getchar()!=0x0A){}; //menunggu new line

data=getchar(); //menerima data

while(getchar()!='K'){}; //menunggu OK

while(getchar()!=0x0A){}; //menunggu new line

delay_ms(500);

printf("AT+CMGD=1"); //hapus memori pesan urutan satu

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putchar(0x0D);//ENTER

while(getchar()!='K'){};//menunggu OK

while(getchar()!=0x0A){};//menunggu new line

delay_ms(500);

printf("AT+CMGD=2"); //hapus memori pesan urutan dua

putchar(0x0D);//ENTER

while(getchar()!='K'){};//menunggu OK

while(getchar()!=0x0A){};//menunggu new line

delay_ms(500);

printf("AT+CMGD=3"); //hapus memori pesan urutan tiga

putchar(0x0D);//ENTER

while(getchar()!='K'){};//menunggu OK

while(getchar()!=0x0A){};//menunggu new line

delay_ms(500);

return(data);//mengembalikan nilai data

}

Mengecek sms masuk

void cek_sms()

{

while(getchar()!=','){}; //menunggu tanda ',' koma

while(getchar()!=0x0A){};//menunggu new line

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}

________________________________________________________

Berikut kode lengkap yang saya gunakan untuk mendeteksi ketinggian air di alat pengukur curah hujan berbasis sms.

/*****************************************************

Chip type : ATmega8535

Program type : Application

AVR Core Clock frequency: 11.059200 MHz

Memory model : Small

External RAM size : 0

Data Stack size : 128

*****************************************************/

#include

#include

#include

// Alphanumeric LCD Module functions

#asm

.equ __lcd_port=0x15 ;PORTC

#endasm

#include

#ifndef RXB8

#define RXB8 1

#endif

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#ifndef TXB8

#define TXB8 0

#endif

#ifndef UPE

#define UPE 2

#endif

#ifndef DOR

#define DOR 3

#endif

#ifndef FE

#define FE 4

#endif

#ifndef UDRE

#define UDRE 5

#endif

#ifndef RXC

#define RXC 7

#endif

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#define FRAMING_ERROR (1

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status=UCSRA;

data=UDR;

if ((status & (FRAMING_ERROR | PARITY_ERROR | DATA_OVERRUN))==0)

{

rx_buffer[rx_wr_index]=data;

if (++rx_wr_index == RX_BUFFER_SIZE) rx_wr_index=0;

if (++rx_counter == RX_BUFFER_SIZE)

{

rx_counter=0;

rx_buffer_overflow=1;

};

};

}

#ifndef _DEBUG_TERMINAL_IO_

// Get a character from the USART Receiver buffer

#define _ALTERNATE_GETCHAR_

#pragma used+

char getchar(void)

{

char data;

while (rx_counter==0);

data=rx_buffer[rx_rd_index];

if (++rx_rd_index == RX_BUFFER_SIZE) rx_rd_index=0;

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#asm("cli")

--rx_counter;

#asm("sei")

return data;

}

#pragma used-

#endif

// USART Transmitter buffer

#define TX_BUFFER_SIZE 8

char tx_buffer[TX_BUFFER_SIZE];

#if TX_BUFFER_SIZE

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UDR=tx_buffer[tx_rd_index];

if (++tx_rd_index == TX_BUFFER_SIZE) tx_rd_index=0;

};

}

#ifndef _DEBUG_TERMINAL_IO_

// Write a character to the USART Transmitter buffer

#define _ALTERNATE_PUTCHAR_

#pragma used+

void putchar(char c)

{

while (tx_counter == TX_BUFFER_SIZE);

#asm("cli")

if (tx_counter || ((UCSRA & DATA_REGISTER_EMPTY)==0))

{

tx_buffer[tx_wr_index]=c;

if (++tx_wr_index == TX_BUFFER_SIZE) tx_wr_index=0;

++tx_counter;

}

else

UDR=c;

#asm("sei")

}

#pragma used-

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#endif

// Standard Input/Output functions

#include

// Declare your global variables here

void sms_init()

{

printf("ATE0");

putchar(0x0D);//ENTER

while(getchar()!='K'){};

while(getchar()!=0x0A){};

delay_ms(500);

}

void send_sms(char flash *fmtstr1, char fmtstr2)

{

printf("AT+CMGF=1");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGS=\"");

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printf(fmtstr1);

printf("\"");

putchar(0x0D);//ENTER

while(getchar()!=0x20){};

delay_ms(500);

putchar(fmtstr2);

putchar(0x1A);

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGD=1");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGD=2");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

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delay_ms(500);

printf("AT+CMGD=3");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

}

void send_sms_txt(char flash *fmtstr1, char flash *fmtstr2)

{

printf("AT+CMGF=1");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGS=\"");

printf(fmtstr1);

printf("\"");

putchar(0x0D);//ENTER

while(getchar()!=0x20){};

delay_ms(500);

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printf(fmtstr2);

putchar(0x1A);

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGD=1");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGD=2");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGD=3");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

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delay_ms(500);

}

char receive_sms()

{

char data;

printf("AT+CMGR=1");

putchar(0x0D);

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

data=getchar();

while(getchar()!='K'){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGD=1");

putchar(0x0D);//ENTER

while(getchar()!='K'){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGD=2");

putchar(0x0D);//ENTER

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while(getchar()!='K'){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGD=3");

putchar(0x0D);//ENTER

while(getchar()!='K'){};

while(getchar()!=0x0A){};

delay_ms(500);

return(data);

}

void cek_sms()

{

while(getchar()!=','){};

while(getchar()!=0x0A){};

}

// Declare your global variables here

#define PULSE PORTA.1

#define ECHO PINA.1

#define ARAH DDRA.1

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unsigned char kata[16];

unsigned int ultra()

{

unsigned int count=0,jarak=0;

ARAH = 1;

PULSE = 1;

delay_us(5);

PULSE = 0;

ARAH = 0;

PULSE = 1;

while(ECHO == 0){};

while(ECHO == 1){count++;};

jarak = (float)count/2.5;

delay_ms(10);

return(jarak);

}

int sensor_in_t0, //nilai sensor sebelum

sensor_in_t1, //nilai sensor sekarang

del_sensor; //delta sensor

void baca_sensor_init()

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{

sensor_in_t0 = (int)ultra(); //setting awal

delay_ms(100);

}

unsigned char baca_curah_hujan()

{

sensor_in_t1 = (int)ultra(); //baca sensor sekarang

del_sensor = sensor_in_t0 - sensor_in_t1; //hitung selisih sensorsebelum dikurangi sensor sekarang

if(del_sensor 300) //300 mm/menit

{

return((unsigned char)3);

}else if(del_sensor>200) //200 mm/menit

{

return((unsigned char)2);

}else if(del_sensor>100) //100 mm/menit

{

return((unsigned char)1);

}else //dibawah 100 mm/menit

{

return((unsigned char)0);

}

}

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char kirim_pesan(unsigned char kode)

{

switch(kode)

{

case 0: lcd_gotoxy(0,1);

lcd_putsf("AMAN");

return('0');

break;

case 1: lcd_gotoxy(0,1);

lcd_putsf("SIAGA I");

return('1');

break;//jika kode 1 kirim pesan siaga I

case 2: lcd_gotoxy(0,1);

lcd_putsf("SIAGA II");

return('2');

break;//jika kode 1 kirim pesan siaga II

case 3: lcd_gotoxy(0,1);

lcd_putsf("SIAGA III");

return('3');

break;//jika kode 1 kirim pesan siaga III

}

}

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void delta_waktu(unsigned int del)

{

delay_ms(del*1000);

}

void main(void)

{

// Declare your local variables here

char data_dev1, data_dev2, data_hasil;

// Input/Output Ports initialization

// Port A initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In

// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T

PORTA=0x00;

DDRA=0x00;

// Port B initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In

// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T

PORTB=0x00;

DDRB=0x00;

// Port C initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In

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// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T

PORTC=0x00;

DDRC=0x00;

// Port D initialization

// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In

// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T

PORTD=0x00;

DDRD=0x00;

// Timer/Counter 0 initialization

// Clock source: System Clock

// Clock value: Timer 0 Stopped

// Mode: Normal top=FFh

// OC0 output: Disconnected

TCCR0=0x00;

TCNT0=0x00;

OCR0=0x00;

// Timer/Counter 1 initialization

// Clock source: System Clock

// Clock value: Timer1 Stopped

// Mode: Normal top=FFFFh

// OC1A output: Discon.

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// OC1B output: Discon.

// Noise Canceler: Off

// Input Capture on Falling Edge

// Timer1 Overflow Interrupt: Off

// Input Capture Interrupt: Off

// Compare A Match Interrupt: Off

// Compare B Match Interrupt: Off

TCCR1A=0x00;

TCCR1B=0x00;

TCNT1H=0x00;

TCNT1L=0x00;

ICR1H=0x00;

ICR1L=0x00;

OCR1AH=0x00;

OCR1AL=0x00;

OCR1BH=0x00;

OCR1BL=0x00;

// Timer/Counter 2 initialization

// Clock source: System Clock

// Clock value: Timer2 Stopped

// Mode: Normal top=FFh

// OC2 output: Disconnected

ASSR=0x00;

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TCCR2=0x00;

TCNT2=0x00;

OCR2=0x00;

// External Interrupt(s) initialization

// INT0: Off

// INT1: Off

// INT2: Off

MCUCR=0x00;

MCUCSR=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization

TIMSK=0x00;

// USART initialization

// Communication Parameters: 8 Data, 1 Stop, No Parity

// USART Receiver: On

// USART Transmitter: On

// USART Mode: Asynchronous

// USART Baud Rate: 115200

UCSRA=0x00;

UCSRB=0xD8;

UCSRC=0x86;

UBRRH=0x00;

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UBRRL=0x05;

// Analog Comparator initialization

// Analog Comparator: Off

// Analog Comparator Input Capture by Timer/Counter 1: Off

ACSR=0x80;

SFIOR=0x00;

// LCD module initialization

lcd_init(16);

// Global enable interrupts

#asm("sei")

lcd_clear();

delay_ms(1000);

lcd_gotoxy(0,0);

lcd_putsf("inisialisasi program");

baca_sensor_init();

sms_init();

while (1)

{

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// Place your code here

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("siap menerima kode");

cek_sms();

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("ada sms, siap cek kode");

data_dev1 = receive_sms() - 48; //normalisasi bilangan, ascii to

desimal

data_dev2 = kirim_pesan(baca_curah_hujan()) - 48; //normalisasi

bilangan, ascii to desimal

data_hasil = data_dev1 + data_dev2;

switch(data_hasil)

{

case 0: lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("AMAN");

delay_ms(2000);

break;

case 1: lcd_clear();

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lcd_gotoxy(0,0);

lcd_putsf("AMAN");

delay_ms(2000);

break;

case 2: lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("AMAN");

delay_ms(2000);

break;

case 3: send_sms("082121962044",'1');

send_sms_txt("082121962033","BADAN PENANGGULANGAN

BANJIR: WARNING I"); //OPERATOR

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("WARNING I");

delay_ms(2000);

break;

case 4: send_sms("082121962044",'2');

send_sms_txt("082121962033","BADAN PENANGGULANGAN

BANJIR: WARNING II"); //OPERATOR

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("WARNING II");

delay_ms(2000);

break;

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case 5: send_sms("082121962044",'2');

send_sms_txt("082121962033","BADAN PENANGGULANGAN

BANJIR: WARNING II"); //OPERATOR

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("WARNING II");

delay_ms(2000);

break;

case 6: send_sms("082121962044",'3');

send_sms_txt("082121962033","BADAN PENANGGULANGAN

BANJIR: WARNING III"); //OPERATOR

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("WARNING II");

delay_ms(2000);

break;

}

};

}

___________________________________________________

UPDATE

Karena versi yg atas masih ada kelemahannya, yaitu pada fungsi send smsnya. Ketika modem memberi

feedbackerror, program mikrokontroler akan terjebak pada looping. Maka, berikut versi perbaikannya dari fungsi send

smsyang akan mencoba mengirim sms kembali jika modem memberikan feedback error pada pengiriman

sebelumnya.

void send_sms(char flash *fmtstr1, char fmtstr2)

{

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char dat;

awal_sms:

delay_ms(500);

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("Kirim SMS");

printf("AT+CMGF=1");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGS=\"");

printf(fmtstr1);

printf("\"");

putchar(0x0D);//ENTER

while(getchar()!=0x20){}; //spasi

delay_ms(500);

putchar(fmtstr2);

putchar(0x1A);

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while((dat=getchar())!=0x0A)

{

if (dat=='O')

{

if(getchar()=='R')

{

getchar();

delay_ms(500);

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("Gagal kirim SMS");

goto awal_sms;

}

}

};

while((dat=getchar())!=0x0A)

{

if (dat=='O')

{

if(getchar()=='R')

{

getchar();

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delay_ms(500);

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("Gagal kirim SMS");

goto awal_sms;

}

}

};

while((dat=getchar())!=0x0A)

{

if (dat=='O')

{

if(getchar()=='R')

{

getchar();

delay_ms(500);

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("Gagal kirim SMS");

goto awal_sms;

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}

}

};

while((dat=getchar())!=0x0A)

{

if (dat=='O')

{

if(getchar()=='R')

{

getchar();

delay_ms(500);

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("Gagal kirim SMS");

goto awal_sms;

}

}

};

delay_ms(500);

printf("AT+CMGD=1");

putchar(0x0D);//ENTER

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while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGD=2");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGD=3");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

}

void send_sms_txt(char flash *fmtstr1, char flash *fmtstr2)

{

char dat;

awal_sms_txt:

delay_ms(500);

lcd_clear();

lcd_gotoxy(0,0);

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lcd_putsf("Kirim SMS ke-2");

printf("AT+CMGF=1");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGS=\"");

printf(fmtstr1);

printf("\"");

putchar(0x0D);//ENTER

while(getchar()!=0x20){};

delay_ms(500);

printf(fmtstr2);

putchar(0x1A);

while((dat=getchar())!=0x0A)

{

if (dat=='O')

{

if(getchar()=='R')

{

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getchar();

delay_ms(500);

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("Gagal kirim SMS ke-2");

goto awal_sms_txt;

}

}

};

while((dat=getchar())!=0x0A)

{

if (dat=='O')

{

if(getchar()=='R')

{

getchar();

delay_ms(500);

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("Gagal kirim SMS ke-2");

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goto awal_sms_txt;

}

}

};

while((dat=getchar())!=0x0A)

{

if (dat=='O')

{

if(getchar()=='R')

{

getchar();

delay_ms(500);

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("Gagal kirim SMS ke-2");

goto awal_sms_txt;

}

}

};

while((dat=getchar())!=0x0A)

{

if (dat=='O')

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{

if(getchar()=='R')

{

getchar();

delay_ms(500);

lcd_clear();

lcd_gotoxy(0,0);

lcd_putsf("Gagal kirim SMS ke-2");

goto awal_sms_txt;

}

}

};

delay_ms(500);

printf("AT+CMGD=1");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGD=2");

putchar(0x0D);//ENTER

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while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

printf("AT+CMGD=3");

putchar(0x0D);//ENTER

while(getchar()!=0x0A){};

while(getchar()!=0x0A){};

delay_ms(500);

}

____________________________________

Daftar Pustaka

http://www.omniinstruments.co.uk/radiotel/P_Fastrack_Modem_M1306B_User_Guide.pdf

http://www.developershome.com/sms/sendSmsByAtCommands.asp

http://www.bbdsoft.com/ascii.html

http://www.coster.info/costerit/teleges/doc/gsm822w.pdf

http://www.vedran.jukic.net/rs232.html

About these ads

FILED UNDERELECTRICAL ENGINEERINGTAGGED WITHAT COMMAND,CODEVISIONAVR,EMBEDDED

SYSTEM,FASTRACK M1306B,GSM,INTERFACING PERANGKAT,MICROCONTROLLER,RS232,SERIAL PORT

51 Responses to Koneksi Mikrokontroler ATmega8535 Dengan Modul GSMFastrack M1306B

1. Eddy says:

February 13, 2012 at 1:26 pm

mt knal mas

kl pke arduino gmna???

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ato mgkn mas pny flowchart dri program ini g??mgkn bsa di share soale sy jg trtarik coba kyk gini

tmksh..

Reply

o wangreadysays:

February 13, 2012 at 2:11 pm

klo arduino belum nyoba gan, gk tauinti dari program saya di atas ada 5 prosedure:

1.sms_init()->inisialisasi, konfigurasi awal modem.

AT command: ATE0 untuk set command tanpa echo

Alur:

a.Kirim ATE0 pada serial

b.kirim ASCII enter yaitu 0x0D

c.looping sampai dapat ASCII huruf K

d.looping sampai dapat ASCII new line yaitu 0x0A

e.delay

2.send_sms(char flash *fmtstr1, char fmtstr2)

AT command:

AT+CMGF=1 untuk set sebagai pesan text

AT+CMGS=nomor tujuan

Alur:

a.kirim AT+CMGF=1 pada serial]

b.kirim ASCII enter

c.looping sampai dapat ASCII new line

d.looping sampai dapat ASCII newline

e.delay

f.kirim AT+CMGS= ke serial

g.kirim nomor hp tujuan k serial

h.kirim ASCII enter

i.looping sampai dapat ASCII spasi

j.delay

k.kirim pesan k serial

l.kirim ASCII ctrl+z ke serial 0x1A

m.cek data yg diterima, apakah ERROR atau OK, jika ERROR kembali ke point a

n. kosongkan memori pesan 1-3 AT+CMDG=nomor memori'

3.send_sms_txt(char flash *fmtstr1, char flash *fmtstr2) -> hampir sama dgn nomor 2

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4.receive_sms()

AT command: AT+CMGR=1 untuk cek memori pesan datang urutan 1

ALur:

a.kirim command AT+CMGR=1

b.kirim ASCII enter

c.looping sampai dapat ASCII new line

d.looping sampai dapat ASCII new line

e.terima data sms

f.looping sampai dapat ASCII K

g.looping sampai dapat ASCII new line

h.kosongkan memori pesan 1-3 AT+CMDG=nomor memori'

5.cek_sms()

Alur:

a.looping sampai dapat ASCII ,

b.looping sampai dapat ASCII new line

intinya sama aja kyak kita pake hyperterminal untuk komunikasi k modemnya, biar enak dan tau respon tiap

command, agan bisa coba pake hyperterminal dluuntuk beberapa command seperti enter atau ctrl+z bisa

dilihat di tabel ASCIIterus untuk mananggapi respon balik dari modem seperti OK atau ERROR, saya hanya

mengambil dan mengecek beberapa tanda saja, contoh untuk program send_sms saya hanya mengecek huruf O

dan R untuk ERROR atau untuk OK saya mengecek ASCII new line dua kali. untuk AT command nya bisa

dicari d google

Reply

Eddy says:

February 13, 2012 at 3:41 pm

ow

oia, brrti komunikasiny alat ini 2 arah y kak??

rncanany mo coba pke hp2 jadul kyk soner aj ni kak:D

wangreadysays:

February 14, 2012 at 12:02 pm

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yoimantaphehehe:D

o riky says:

May 13, 2014 at 4:31 am

permisi mas, saya mau numpang tanya dan request dong, program untuk wavecom menggunakan microcontroler

atmega8535, jadi ceritanya saya mau wavecom itu mengirim data ketika saya merequest, jadi ketika wavecom

menerima sms dari saya, maka dia akan mereply, demikian mas admin, kalau bisa reply saya lewat email, saya

akan sangat berterimaksih..

Reply

wangreadysays:

May 21, 2014 at 3:28 am

klo bayangan saya request command nya bisa pake getchar, misal command itu di set 7 karakter, misal REG1234

berarti tambahin aja di programnya

char data[10];

for(i=0;i