v2.9

lib/SparkFun u-blox Arduino Library/examples/Example7_OutputRate/Example7_OutputRate.ino

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+/*
+  Set update rate to 10Hz
+  By: Nathan Seidle
+  SparkFun Electronics
+  Date: January 3rd, 2019
+  License: MIT. See license file for more information but you can
+  basically do whatever you want with this code.
+
+  This example shows how to increase the output of the module from 1Hz to 4Hz.
+  The max output rate various from model to model. RTFM! But you cannot do harm
+  to the module.
+
+  We also disable NMEA output on the I2C bus and use only UBX. This dramatically 
+  decreases the amount of data that needs to be transmitted.
+
+  Leave NMEA parsing behind. Now you can simply ask the module for the datums you want!
+
+  Feel like supporting open source hardware?
+  Buy a board from SparkFun!
+  ZED-F9P RTK2: https://www.sparkfun.com/products/15136
+  NEO-M8P RTK: https://www.sparkfun.com/products/15005
+  SAM-M8Q: https://www.sparkfun.com/products/15106
+
+  Hardware Connections:
+  Plug a Qwiic cable into the GPS and a BlackBoard
+  If you don't have a platform with a Qwiic connection use the SparkFun Qwiic Breadboard Jumper (https://www.sparkfun.com/products/14425)
+  Open the serial monitor at 115200 baud to see the output
+*/
+
+#include <Wire.h> //Needed for I2C to GPS
+
+#include "SparkFun_Ublox_Arduino_Library.h" //http://librarymanager/All#SparkFun_u-blox_GNSS
+SFE_UBLOX_GPS myGPS;
+
+long lastTime = 0; //Simple local timer. Limits amount if I2C traffic to Ublox module.
+long startTime = 0; //Used to calc the actual update rate.
+long updateCount = 0; //Used to calc the actual update rate.
+
+void setup()
+{
+  Serial.begin(115200);
+  while (!Serial); //Wait for user to open terminal
+  Serial.println("SparkFun Ublox Example");
+
+  Wire.begin();
+  Wire.setClock(400000);
+
+  if (myGPS.begin() == false) //Connect to the Ublox module using Wire port
+  {
+    Serial.println(F("Ublox GPS not detected at default I2C address. Please check wiring. Freezing."));
+    while (1);
+  }
+
+  myGPS.setI2COutput(COM_TYPE_UBX); //Set the I2C port to output UBX only (turn off NMEA noise)
+  myGPS.setNavigationFrequency(10); //Set output to 10 times a second
+
+  byte rate = myGPS.getNavigationFrequency(); //Get the update rate of this module
+  Serial.print("Current update rate:");
+  Serial.println(rate);
+
+  startTime = millis();
+}
+
+void loop()
+{
+  //Query module only every second. Doing it more often will just cause I2C traffic.
+  //The module only responds when a new position is available. This is defined
+  //by the update freq.
+  if (millis() - lastTime > 25)
+  {
+    lastTime = millis(); //Update the timer
+    
+    long latitude = myGPS.getLatitude();
+    Serial.print(F("Lat: "));
+    Serial.print(latitude);
+
+    long longitude = myGPS.getLongitude();
+    Serial.print(F(" Long: "));
+    Serial.print(longitude);
+
+    updateCount++;
+
+    //Calculate the actual update rate based on the sketch start time and the 
+    //number of updates we've received.
+    Serial.print(F(" Rate: "));
+    Serial.print( updateCount / ((millis() - startTime) / 1000.0), 2);
+    Serial.print(F("Hz"));
+
+    Serial.println();
+  }
+}