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