MSP430FR6989: Splitting a string of data in Energia.

thank you for your reply, but can you give me an example please. Still a newbie

Hi,

you may would like to take a look at this example

and then look for further info here:

i think this should provide the functions you are looking for.

Regards,

 Stefan

thank you for your reply .

so this is what i came up after the above reference and other websites.

i first tried the code using arduino the software serial works fine but in using energia i get an error for software serial as shown below.

And secondly the data gets over written as seen below i dunno where its glitching.

and i used "," for seperator so for the this data

$GNRMC,070236.000,A,1301.7816,N,07731.3057,E,0.00,306.11,300319,,,D*70

the string numbers starts like 0 for $GNRMC and 1 for 070236.000 which is the time and 2 for A which indicated valid and invalid and so on.

so the time, latitude and status is fine but i dont see longitude even the number is correct need help with that.

the code and screen shots are attached below.

#include <SoftwareSerial.h> 
SoftwareSerial mySerial(3,2);

String data[7];
#define DEBUG true
String state,timegps,latitude,longitude;
void setup() {
mySerial.begin(112500);
Serial.begin(9600);
delay(50); 
mySerial.println("AT");
delay(1000);
mySerial.println("AT+QGNSSC?");
delay(1000);

mySerial.println("AT+QGNSSC=1");
delay(1000);

mySerial.println("AT+QGNSSTS?");
delay(1000);
}

void loop() {
  sendTabData("AT+QGNSSRD=\"NMEA/RMC\"",1000,DEBUG);
  if (state !=0) {
    Serial.println("State  :"+state);
    Serial.println("Time  :"+timegps);
    Serial.println("Latitude  :"+latitude);
    Serial.println("Longitude  :"+longitude);
    delay(300);
    mySerial.flush();
  
  }else {
    Serial.println("GPS initialising");
  }
}

void sendTabData(String command , const int timeout , boolean debug){
mySerial.println(command);
  long int time = millis();
  int i = 0;

  while((time+timeout) > millis()){
    while(mySerial.available()){
      char c = mySerial.read();
      if (c != ',') {
         data[i] +=c;
         delay(100);
      } else {
        i++;  
      }
      if (i == 7) {
        delay(100);
        goto exitL;
      }
    }
  }exitL:
  if (debug) {
    state = data[2];
    timegps = data[1];
    latitude = data[3];
    longitude =data[5];  
  }
}
String sendData (String command , const int timeout ,boolean debug){
  String response = "";
 mySerial.println(command);
  long int time = millis();
  int i = 0;

  while ( (time+timeout ) > millis()){
    while (mySerial.available()){
      char c = mySerial.read();
      response +=c;
      
    }
  }
  if (debug) {
     Serial.print(response);
     }
     return response;     
}

Hi,

SoftwareSerial has only be used or older device which did not had a hardware serial interface

For the F6989 you can use the two implemented hardware interfaces which are available as

Serial
Serial1

For the Software - you should remove the delays, otherwise you might get an input buffer overflow:

  while((time+timeout) > millis()){
    while(Serial.available()){
      char c = Serial.read();
      if (c != ',') {
         data[i] +=c;
         //delay(100);
      } else {
        i++;
      }
      if (i == 7) {
        //delay(100);
        goto exitL;
      }
    }
  }

Regards,

 Stefan

Thank you for your reply.

The hardware serials worked thank you for that.

But the data is totally messed up and like in the above reply if i add the delay nothing is displaying on the serial monitor but when removed the delay i get these values on the serial monitor.

Hi,

Here is the updated code there is not much changes just removed the delays.

And also please see why that data is overlapped like in the above pic instead of giving new values every time it shows new and old one next to one another.

String data[6];
#define DEBUG true
String state,timegps,latitude,longitude;
void setup() {
Serial1.begin(112500);
Serial.begin(19200);
delay(50); 
Serial1.println("AT");
delay(1000);
Serial1.println("AT+QGNSSC?");
delay(1000);

Serial1.println("AT+QGNSSC=1");
delay(1000);

Serial1.println("AT+QGNSSTS?");
delay(1000);
}

void loop() {
  sendTabData("AT+QGNSSRD=\"NMEA/RMC\"",1000,DEBUG);
  delay(500);
  if (state !=0) {
    Serial.println("State  :"+state);
    Serial.println("Time  :"+timegps);
    Serial.println("Latitude  :"+latitude);
    Serial.println("Longitude  :"+longitude);
    delay(2000);
    Serial1.flush();
  
  }else {
    Serial.println("GPS initialising");
  }
}

void sendTabData(String command , const int timeout , boolean debug){
Serial1.println(command);
  long int time = millis();
  int i = 0;

  while((time+timeout) > millis()){
    while(Serial1.available()){
      char c = Serial1.read();
      if (c != ',') {
         data[i] +=c;
        //delay(70);
      } else {
        i++;  
      }
      if (i == 6) {
       // delay(70);
         
        goto exitL;
      }
    }
  }
  exitL:
  if (debug) {
    state = data[2];
    timegps = data[1];
    latitude = data[3];
    longitude =data[5];  
  }
}
String sendData (String command , const int timeout ,boolean debug){
  String response = "";
 Serial1.println(command);
  long int time = millis();
  int i = 0;

  while ( (time+timeout ) > millis()){
    while (Serial1.available()){
      char c = Serial1.read();
      response +=c;
      
    }
  }
  if (debug) {
     Serial.print(response);
     }
     return response;     
}

String data[6];#define DEBUG trueString state,timegps,latitude,longitude;void setup() {Serial1.begin(112500);Serial.begin(19200);delay(50); Serial1.println("AT");delay(1000);Serial1.println("AT+QGNSSC?");delay(1000);
Serial1.println("AT+QGNSSC=1");delay(1000);
Serial1.println("AT+QGNSSTS?");delay(1000);}
void loop() {  sendTabData("AT+QGNSSRD=\"NMEA/RMC\"",1000,DEBUG);  delay(500);  if (state !=0) {    Serial.println("State  :"+state);    Serial.println("Time  :"+timegps);    Serial.println("Latitude  :"+latitude);    Serial.println("Longitude  :"+longitude);    delay(2000);    Serial1.flush();    }else {    Serial.println("GPS initialising");  }}
void sendTabData(String command , const int timeout , boolean debug){Serial1.println(command);  long int time = millis();  int i = 0;
  while((time+timeout) > millis()){    while(Serial1.available()){      char c = Serial1.read();      if (c != ',') {         data[i] +=c;        //delay(70);      } else {        i++;        }      if (i == 6) {       // delay(70);                 goto exitL;      }    }  }  exitL:  if (debug) {    state = data[2];    timegps = data[1];    latitude = data[3];    longitude =data[5];    }}String sendData (String command , const int timeout ,boolean debug){  String response = ""; Serial1.println(command);  long int time = millis();  int i = 0;
  while ( (time+timeout ) > millis()){    while (Serial1.available()){      char c = Serial1.read();      response +=c;          }  }  if (debug) {     Serial.print(response);     }     return response;     }