Giao tiếp vi điều khiển với Module 548

Sơ đồ nguyên lý giao tiếp giữa Vi Điều Khiển với Module Sim548:



Code Demo:



#include "Pic_GSM_demo.h"


#include ".\myLCD16x2.c"
#include


#define Led0 PIN_C1
#define Led1 PIN_C2
#define GSM_PW PIN_E2
#define GSM_SENSE PIN_E1
#define TEXTMODE 5;
#define PDUMODE 0;


void GSM_init(void);
void GSM_start(void);
void GSM_sel_mess_mode(char mode);


void GSM_init(void)
{
output_bit(GSM_PW,1);
output_bit(Led1,1);
output_float(GSM_SENSE);
}
void GSM_start(void)
{
//start up GSM module
delay_ms(2000);
lcd_init();

lcd_putc("\fwww.elabvn.com\n");
lcd_putc("Pic GSM rev 1.0");
//printf("GSM demo \n \r");
output_bit(GSM_PW,0);
output_bit(Led1,0);
delay_ms(2000);
output_bit(GSM_PW,1);
output_bit(Led1,1);
lcd_putc("\nGSM initializing");
delay_ms(50000);


}


void GSM_sel_mess_mode(char mode)
{
if(mode>0) //text mode
{
output_bit(Led1,0);
printf("AT+CMGF=1");
putc(13);//enter CR
output_bit(Led1,1);
delay_ms(1000);
output_bit(Led1,0);


}
else //PDU mode
{
output_bit(Led1,0);
printf("AT+CMGF=0");
putc(13);//enter CR
output_bit(Led1,1);
delay_ms(1000);
output_bit(Led1,0);
}

}


void main()
{
int1 gsm_ok;
int cnt;
int1 temp;
char c;
int i;



GSM_init();
setup_adc_ports(NO_ANALOGS|VSS_VDD);
setup_adc(ADC_CLOCK_DIV_2);
setup_spi(SPI_SS_DISABLED);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_timer_2(T2_DISABLED,0,1);
setup_comparator(NC_NC_NC_NC);// This device COMP currently not supported by the PICWizard
//Setup_Oscillator parameter not selected from Intr Oscillator Config tab


// TODO: USER CODE!!
GSM_start();
GSM_sel_mess_mode(5);

printf("ATE1"); //echo on
putc(13);//enter CR
delay_ms(1000);//

printf("AT");
putc(13);//enter CR
output_bit(Led1,1);
lcd_putc("\nGSM send message ");
delay_ms(1000);
output_bit(Led1,0);
printf("AT+CMGS=");
putc(34);//"
printf("0989703330");
putc(34);//"

putc(13);//enter CR
delay_ms(1000);//cho ki tu ">"
printf("SIM300 Ready");
delay_ms(1000);//
putc(0x1A);//CTRL+Z
output_bit(Led1,1);
delay_ms(2000);//

lcd_putc("\nGSM sent done ");
while(1);
}

Nguồn: anhduc_4share