Udoo neo Arduino

I m facing with this error Board at COM1 is not available I am using ardunio ide 1.6.5 preinstalled in udoobuntu 2.0 rc desktop trying to connect my adafruit ultimate GPS rx and tx in pin 0 and 1 GND and 3v3 pin in my udoo neo board I have downloaded the library of GPS from git and copied it in ardunio library folder. I am new with this can any one help me.

 

The arduino side is not on COM1 but on /dev/ttyMCC so set your IDE to that (as it is preinstalled).

Second, to talk with your GPS shield from Arduino side you better use the build in Serial0, available on pin 0 and 1. Perhaps you have to modify some sketches and libraries to adapt to this situation.

If you want to talk from the Linux side to the Arduino side you use Serial. If you want to use the GPS data on the Linux side you first read them with Serial0 from shield to Arduino and then send them with Serial to the Linux side.

See also the communication part of the Neo documentation.

 

Thank you will try and let you know.

 

need some help.
im trying to run a basic script with related to adafruit ultimate GPS but as udoo neo not supported with SoftwareSerial I dont know what to do

SoftwareSerial mySerial(3,2);
Adafruit_GPS GPS(&mySerial);

I am unable to get any values on ttyMMC
getting an error

Kindly help me.

 

You have to erase all SoftwareSerial references and use Serial0 instead.

Change your code with

Adafruit_GPS GPS(&Serial0);

Be sure you connect the TX and RX pins of your gps to pin 0 and 1 (not sure I have the correct order, could be the other way) please check the documentation yourself.

 

will try and let you know.

 

I connected Rx and tx to pin 0 and 1 and trying to run this code it successfully uploads but no output

Code:

#include <Adafruit_GPS.h>
Adafruit_GPS GPS(&Serial0);

String NMEA1;
String NMEA2;
char c;

void setup(){
  Serial.begin(115200);
  Serial.println("Adafruit GPS library basic test!");
  GPS.begin(9600);
  GPS.sendCommand("&PGCMD,33,0*6D");
  GPS.sendCommand(PMTK_SET_NMEA_UPDATE_10HZ);
  GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);
  //GPS.begin(9600);
  //GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_ALLDATA);
  delay(1000);
}

void loop(){

  readGPS();
  
}


void readGPS()
{
  while(!GPS.newNMEAreceived())
  {
  c=GPS.read();

  }
  GPS.parse(GPS.lastNMEA());
  NMEA1=GPS.lastNMEA();

  while(!GPS.newNMEAreceived())
  {
  c=GPS.read();

  }
  GPS.parse(GPS.lastNMEA());
  NMEA2=GPS.lastNMEA();
Serial.println("Adafruit GPS library basic test!");
  Serial.println(NMEA1);
  Serial.println(NMEA2);

}

 

I looked in the Adafruit_GPS library and it is full of references to softserial. So this could be an issue.
To get rid of the library first what happens if you run the following code? Do you see GPS data arriving in the Serial Monitor

Code:

void setup() {

  Serial.begin(115200); // setup serial for serial monitor
  delay(100);
  Serial.println("GPS test Started");

  // GPS Setup
  serial0.begin(9600);  // adapt speed for your GPS, try 4800 if ails
  delay(100);
  // Cut first gibberish
  while(serial0.available())
    if (serial0.read() == '\r')
      break;
}

void loop()
{
  String s = checkGPS();
  if(s && s.substring(0, 6) == "$GPGGA")
  {
    Serial.println(s);
  }
}

// Check GPS and returns string if full line recorded, else false
String checkGPS()
{
  if (serial0.available())
  {
    char c = serialGPS.read();
    if (c != '\n' && c != '\r')
    {
      stringGPS  = c;
    }
    else
    {
      if (stringGPS != "")
      {
        String tmp = stringGPS;
        stringGPS = "";
        return tmp;
      }
    }
  }
  return false;
}

 

will check and let you know in 10mins

 

getting an error serial0 not declared in the scope

 

Type error my side: serial0 should be Serial0.
I adapted this script without IDE.....

 

ok

 

Arduino: 1.6.5 (Linux), Board: "UDOO Neo (Cortex M4)"

gps.ino: In function 'void setup()':
gps:8: error: 'serial0' was not declared in this scope
gps.ino: In function 'String checkGPS()':
gps:30: error: 'serialGPS' was not declared in this scope
gps:33: error: 'stringGPS' was not declared in this scope
gps:37: error: 'stringGPS' was not declared in this scope
In file included from /usr/share/arduino/hardware/UDOO/solox/variants/udooneo/Arduino.h:26:0,
from gps.ino:1:
gps:45: error: converting to 'String' from initializer list would use explicit constructor 'String::String(int, unsigned char)'
'serial0' was not declared in this scope

This report would have more information with
"Show verbose output during compilation"
enabled in File > Preferences.

 

You did not change all serial0 into Serial0
Furthermore it was an old sketch I found somewhere on the net and modified a little hoping it would compile. But debugging is an task you have to be able to do yourself.

 

can you check with this atleast

gps:30: error: 'serialGPS' was not declared in this scope
gps:33: error: 'stringGPS' was not declared in this scope
gps:37: error: 'stringGPS' was not declared in this scope

 

stringGPS was not declared yet. Add a line at the beginning of the sketch to declare it:
String stringGPS ="";

 

not working yet

 

You have to be more specific what is not working?

 

Wait will send you the error.

 

I only need to retrieve speed from my gps and display it into udoo.