dot215-grove-gps-air530.ino

// This is just proof that the GPS is connected correctly and you can get data from satellites. 


// On Portenta Serial1 UART1 (PA_9) TX on pin D14   to Grove GPS RX  they flip!
// On Portenta Serial1 UART1 (PA_10) RX on pin D13  to Grove GPS TX
// Portenta 3V3 to grove GPS VCC
// Portenta GND to Grove GPS GND


// This works with Grove GPS AIR530

#include <Arduino.h> // Only needed by https://platformio.org/


unsigned char buffer[64];                   // buffer array for data receive over serial port
int count=0;                                // counter for buffer array


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
}



void setup()
{ 
    Serial1.begin(9600);                 // the Sensor Serial1 baud rate
    Serial.begin(9600);                     // the Serial port of Arduino baud rate.
}
 
void loop()
{
    if (Serial1.available())                     // if date is coming from software serial port ==> data is coming from Serial1 shield
    {
        while(Serial1.available())               // reading data into char array
        {
            buffer[count++]=Serial1.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 stored data from the array
        count = 0;                                  // set counter of while loop to zero 
    }
    if (Serial.available())                 // if data is available on hardware serial port ==> data is coming from PC or notebook
      Serial1.write(Serial.read());        // write it to the Serial1 shield
}