forked from rusakovichma/SIM900D-sample
/
sim900.c
109 lines (96 loc) · 2 KB
/
sim900.c
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#include <string.h>
//#include <avr/pgmspace.h>
#include "template.h"
#include "uart.h"
#include "sim900.h"
const char successResp[] = "OK";
const char failResp[] = "ERROR";
const char inNetResp[] = "+CREG: 0,1";
const char outNetResp[] = "+CREG: 0,2";
const char messageSendResp[] = "+CMGS: ";
char buffer[];
unsigned char getCommByte(unsigned int data);
void sendCRLF();
char *getAnswer(){
char cmd_buff[20];
unsigned int c = UART_NO_DATA;
int j=0;
while(1){
c = uart_getc();
if (c != UART_NO_DATA){
unsigned char answerChar = getCommByte(c);
if (answerChar == CR && j!=0){
break;
} else if (answerChar != LF && answerChar!= CR){
cmd_buff[j] = answerChar;
j++;
}
}
}
return cmd_buff;
}
void simPowerOn(){
delay(startDelay);
SetBit(pwrDDR, pwrPin);
ClrBit(pwrPORT, pwrPin);
delay(initDelay);
ClrBit(pwrDDR, pwrPin);
}
void simCommInit(){
uart_init( UART_BAUD_SELECT(UART_BAUD_RATE,F_CPU) );
delay(commDelay);
uart_puts("AT+IPR=9600");
sendCRLF();
delay(commDelay);
if (strncmp( getAnswer(), successResp, 2 ) != 0){
//sendError
}
}
void waitForReg(){
while(1){
uart_puts("AT+CREG?");
sendCRLF();
delay(regDelay);
if (strncmp( getAnswer(), inNetResp, 10 ) == 0){
break;
}
}
}
void simSetTextInput(){
uart_puts("AT+CMGF=1");
sendCRLF();
delay(commDelay);
if (strncmp( getAnswer(), successResp, 2 ) != 0){
//sendError
}
}
void simSetPhone(){
uart_puts("AT+CMGS=\"+375447747024\"");
sendCRLF();
delay(commDelay);
}
void *searchContact(char * contact, size_t len){
buffer[30] = "AT+CPBF=\"";
buffer[30] = strncat(buffer, contact, len);
buffer[30] = strncat(buffer, "\"", 1);
uart_puts(buffer);
sendCRLF();
delay(commDelay);
return getAnswer();
}
void simSendMessage(){
uart_puts("sim900 test");
sendCRLF();
delay(commDelay);
uart_putc(inputEnd);
if (strncasecmp( getAnswer(), messageSendResp, 7) != 0){
//sendError
}
}
unsigned char getCommByte(unsigned int data){
return (data & 0x00FF);
}
void sendCRLF(){
uart_putc(CR);
uart_putc(LF);
}