Hi everyone! I have a problem with my arduino uno board and my gsm shield,the messages aren't send from my gsm to my phone, i link my gsm with my arduino like this
and use this code
#include <SoftwareSerial.h>
SoftwareSerial GPRS(7, 8); //7 = TX, 8 = RX
unsigned char buffer[64]; port
int count=0;
int i = 1; //if i = 0, send SMS.
void setup(){
//delay(10000);
GPRS.begin(19200); // the GPRS baud rate
Serial.begin(19200); // the Serial port of Arduino baud rate.
Serial.print("I'm ready");
Serial.print("Hello?");
}
void loop(){
if (GPRS.available()){ // if date is comming from softwareserial port ==> data is comming from gprs shield
while(GPRS.available()){ // reading data into char array
buffer[count++]=GPRS.read(); // writing data into array
if(count == 64)break;
}
Serial.write(buffer,count); // if no data transmission ends, write buffer to hardware serial port
clearBufferArray(); // call clearBufferArray function to clear the storaged data from the array
count = 0; // set counter of while loop to zero
}
if (Serial.available()) // if data is available on hardwareserial port ==> data is comming from PC or notebook
GPRS.write(Serial.read()); // write it to the GPRS shield
if(i == 0){
GPRS.print("AT+CMGF=1\r"); //mandando SMS em modo texto
Serial.println("AT+CMGF=1\r"); //mandando SMS em modo texto
delay(1000);
GPRS.print("AT+CMGS=\"+5549****3979\"\r"); // numero que vamos mandar o SMS
Serial.println("AT+CMGS=\"+5549****3979\"\r"); // numero que vamos mandar o SMS
delay(1000);
GPRS.print("Test\r"); // corpo da msg
Serial.println("Test\r"); // corpo da msg
delay(1000);
GPRS.write(0x1A); //equivalente a mandar Ctrl+Z(finaliza corpo do SMS)
delay(1000);
Serial.println("SMS sent successfully");
i++;
}
}
void clearBufferArray(){ // function to clear buffer array
for (int i=0; i<count;i++){
buffer[i]=NULL; // clear all index of array with command NULL
}
}
but doesn't work, my gsm shield is sim 900 s2-1040s-z1k0c. I'd like to know how i link my 2 board and the code to make it work, thank you all
Antonio