Hi everyone,
This is my first post. I want to send GPS location via SMS with "GSM-GPRS-GPS Shield" using the SIM908 module.
Arduino that I'm using (arduino uno R3 SMD):
Shield that I'm using:
http://www.waveshare.com/wiki/GSM/GPRS/GPS_Shield_User_Manual
What' I have done:
I know that the shield work properly (Sending SMS/ Get GPS) because I used the software TCP232 (provided) that allowed me to send AT command to the SIM908 and I succeed, so that's not the problem.
The documentation provided is adapted for an older version of this shield so the hardware connection instructions are not adapted to the new shield.(documents are accessible here: http://www.waveshare.com/wiki/GSM/GPRS/GPS_Shield). Indeed, they told us to connect:
GSM EN -> D2
GPS EN -> D3
And the code provided is:
double Datatransfer(char *data_buf,char num)//convert the data to the float type
{ //*data_buf£ºthe data array
double temp=0.0; //the number of the right of a decimal point
unsigned char i,j;
if(data_buf[0]=='-')
{
i=1;
//process the data array
while(data_buf[i]!='.')
temp=temp*10+(data_buf[i++]-0x30);
for(j=0;j<num;j++)
temp=temp*10+(data_buf[++i]-0x30);
//convert the int type to the float type
for(j=0;j<num;j++)
temp=temp/10;
//convert to the negative numbe
temp=0-temp;
}
else//for the positive number
{
i=0;
while(data_buf[i]!='.')
temp=temp*10+(data_buf[i++]-0x30);
for(j=0;j<num;j++)
temp=temp*10+(data_buf[++i]-0x30);
for(j=0;j<num;j++)
temp=temp/10 ;
}
return temp;
}
char ID()//Match the ID commands
{
char i=0;
char value[6]={
'
Note that they write:
digitalWrite(4,LOW);//Enable GPS mode
digitalWrite(3,HIGH);//Disable GSM mode
But it can't work for me by connecting GSM EN to D2 and GPS EN to D3.
When I connect GSM EN to D3 I can easily send/read an SMS but I really don't know how to connect GPS EN to visualize GPS weft (even when I connect GPS RX ->DUINO TX and GPS TX -> DUINO RX or when I connect GPS EN->D2/D4).
This is my code that allow me to send an SMS and, hope so, configure the GPS:
char inChar;
int index;
char inData[200];
String inputString = ""; // a string to hold incoming data
boolean stringComplete = false; // whether the string is complete
void setup()
{
//Init the driver pins for GSM function
pinMode(3,OUTPUT);
pinMode(4,OUTPUT);
pinMode(5,OUTPUT);
//Output GSM Timing
digitalWrite(5,HIGH);
delay(1500);
digitalWrite(5,LOW);
Serial.begin(9600);
digitalWrite(3,LOW);//enable GSM TX、RX
digitalWrite(4,HIGH);//disable GPS TX、RX
delay(20000);
start_GSM();
delay(5000);
//start_GPS();
Serial.println("AT+CMGS=\"+336XXXXXXXX\"");
delay(1000);
Serial.print("My GPS doesn't work");
delay(1000);
Serial.write(26);
delay(5000);
Serial.println("AT+CGPSPWR=1");
Serial.println("AT+CGPSRST=1");
//Serial.println("AT+CGPSIPR=115200");
delay(5000);
digitalWrite(4,LOW);
digitalWrite(3,HIGH);
inputString.reserve(200);
}
void loop()
{
Serial.println("AT+CGPSINF=0");
delay(2000);
if (stringComplete) {
Serial.println(inputString);
// clear the string:
inputString = "";
stringComplete = false;
}
}
void serialEvent() {
while (Serial.available()) {
// get the new byte:
char inChar = (char)Serial.read();
// add it to the inputString:
inputString += inChar;
// if the incoming character is a newline, set a flag
// so the main loop can do something about it:
if (inChar == '\n') {
stringComplete = true;
}
}
}
void start_GSM(){
//Configuracion GPRS Claro Argentina
Serial.println("AT");
delay(2000);
Serial.println("AT+CREG?");
delay(2000);
}
I've spent a very long time on google/ waveshare/ arduino forum to find a solution but I failed.,'G','P','G','G','A' };
char val[6]={
'0','0','0','0','0','0' };
while(1)
{
if(Serial.available())
{
val[i] = Serial.read();
if(val[i]==value[i])
{
i++;
if(i==6)
{
i=0;
return 1;
}
}
else
i=0;
}
}
}
void comma(char num)
{
char val;
char count=0;
while(1)
{
if(Serial.available())
{
val = Serial.read();
if(val==',')
count++;
}
if(count==num)
return;
}
}
void UTC()//get the UTC data -- the time
{
char i;
char time[9]={
'0','0','0','0','0','0','0','0','0'
};
double t=0.0;
if( ID())//check ID
{
comma(1);//remove 1 ','
while(1)
{
if(Serial.available())
{
time[i] = Serial.read();
i++;
}
if(i==9)
{
i=0;
t=Datatransfer(time,2);
t=t-30000.00;
long time=t;
int h=time/10000;
int m=(time/100)%100;
int s=time%100;
if (h<0) //UTC-
{
h+=24;
}
Serial.print(h);
Serial.print("h");
Serial.print(m);
Serial.print("m");
Serial.print(s);
Serial.println("s");
return;
}
}
}
}
void latitude()//get latitude
{
char i;
char lat[10]={
'0','0','0','0','0','0','0','0','0','0'
};
if( ID())
{
comma(2);
while(1)
{
if(Serial.available())
{
lat[i] = Serial.read();
i++;
}
if(i==10)
{
i=0;
Serial.println(Datatransfer(lat,5)/100.0,7);
return;
}
}
}
}
void lat_dir()//get dimensions
{
char i=0,val;
if( ID())
{
comma(3);
while(1)
{
if(Serial.available())
{
val = Serial.read();
Serial.write(val);
Serial.println();
i++;
}
if(i==1)
{
i=0;
return;
}
}
}
}
void longitude()//get longitude
{
char i;
char lon[11]={
'0','0','0','0','0','0','0','0','0','0','0'
};
if( ID())
{
comma(4);
while(1)
{
if(Serial.available())
{
lon[i] = Serial.read();
i++;
}
if(i==11)
{
i=0;
Serial.println(Datatransfer(lon,5)/100.0,7);
return;
}
}
}
}
void lon_dir()//get direction data
{
char i=0,val;
if( ID())
{
comma(5);
while(1)
{
if(Serial.available())
{
val = Serial.read();
Serial.write(val);
Serial.println();
i++;
}
if(i==1)
{
i=0;
return;
}
}
}
}
void altitude()//get altitude data
{
char i,flag=0;
char alt[8]={
'0','0','0','0','0','0','0','0'
};
if( ID())
{
comma(9);
while(1)
{
if(Serial.available())
{
alt[i] = Serial.read();
if(alt[i]==',')
flag=1;
else
i++;
}
if(flag)
{
i=0;
Serial.println(Datatransfer(alt,1),1);
return;
}
}
}
}
void setup()
{
pinMode(3,OUTPUT);//The default digital driver pins for the GSM and GPS mode
pinMode(4,OUTPUT);
pinMode(5,OUTPUT);
digitalWrite(5,HIGH);
delay(1500);
digitalWrite(5,LOW);
digitalWrite(3,LOW);//Enable GSM mode
digitalWrite(4,HIGH);//Disable GPS mode
delay(2000);
Serial.begin(9600);
delay(5000);
Serial.println("AT");
delay(2000);
//turn on GPS power supply
Serial.println("AT+CGPSPWR=1");
delay(1000);
//reset GPS in autonomy mode
Serial.println("AT+CGPSRST=1");
delay(1000);
digitalWrite(4,LOW);//Enable GPS mode
digitalWrite(3,HIGH);//Disable GSM mode
delay(2000);
Serial.println("$GPGGA statement information: ");
}
void loop()
{
while(1)
{
Serial.print("UTC:");
UTC();
Serial.print("Lat:");
latitude();
Serial.print("Dir:");
lat_dir();
Serial.print("Lon:");
longitude();
Serial.print("Dir:");
lon_dir();
Serial.print("Alt:");
altitude();
Serial.println(' ');
Serial.println(' ');
}
}
Note that they write:
digitalWrite(4,LOW);//Enable GPS mode
digitalWrite(3,HIGH);//Disable GSM mode
But it can't work for me by connecting GSM EN to D2 and GPS EN to D3.
When I connect GSM EN to D3 I can easily send/read an SMS but I really don't know how to connect GPS EN to visualize GPS weft (even when I connect GPS RX ->DUINO TX and GPS TX -> DUINO RX or when I connect GPS EN->D2/D4).
This is my code that allow me to send an SMS and, hope so, configure the GPS:
§DISCOURSE_HOISTED_CODE_1§
I've spent a very long time on google/ waveshare/ arduino forum to find a solution but I failed.