Add support for serial protocol, plus factory reset command

examples/Example11_UseUart/Example11_UseUart.ino

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+/*
+  Reading lat and long via UBX binary commands using UART @38400 baud - free from I2C
+  By: Nathan Seidle, Adapted from Example3_GetPosition by Thorsten von Eicken
+  SparkFun Electronics
+  Date: January 28rd, 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 configure the library and U-Blox for serial port use as well as
+  switching the module from the default 9600 baud to 38400.
+
+  Note: Long/lat are large numbers because they are * 10^7. To convert lat/long
+  to something google maps understands simply divide the numbers by 10,000,000. We 
+  do this so that we don't have to use floating point numbers.
+
+  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:
+  Connect the U-Blox serial port to Serial1
+  Open the serial monitor at 115200 baud to see the output
+*/
+
+#include "SparkFun_Ublox_Arduino_Library.h" //http://librarymanager/All#SparkFun_Ublox_GPS
+SFE_UBLOX_GPS myGPS;
+
+long lastTime = 0; //Simple local timer. Limits amount if I2C traffic to Ublox module.
+
+void setup()
+{
+  Serial.begin(115200);
+  while (!Serial); //Wait for user to open terminal
+  Serial.println("SparkFun Ublox Example");
+
+  //Assume that the U-Blox GPS is running at 9600 baud (the default) or at 38400 baud.
+  //Loop until we're in sync and then ensure it's at 38400 baud.
+  do {
+    Serial.println("GPS: trying 38400 baud");
+    Serial1.begin(38400);
+    if (myGPS.begin(Serial1)) break;
+
+    delay(100);
+    Serial.println("GPS: trying 9600 baud");
+    Serial1.begin(9600);
+    if (myGPS.begin(Serial1)) {
+        Serial.println("GPS: connected at 9600 baud, switching to 38400");
+        myGPS.setSerialRate(38400);
+        delay(100);
+    } else {
+        //gps.factoryReset();
+        delay(2000); //Wait a bit before trying again to limit the Serial output
+    }
+  } while(1);
+  Serial.println("GPS serial connected");
+
+  myGPS.setUART1Output(COM_TYPE_UBX); //Set the UART port to output UBX only
+  myGPS.setI2COutput(COM_TYPE_UBX); //Set the I2C port to output UBX only (turn off NMEA noise)
+  myGPS.saveConfiguration(); //Save the current settings to flash and BBR
+}
+
+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
+  if (millis() - lastTime > 1000)
+  {
+    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);
+    Serial.print(F(" (degrees * 10^-7)"));
+
+    long altitude = myGPS.getAltitude();
+    Serial.print(F(" Alt: "));
+    Serial.print(altitude);
+    Serial.print(F(" (mm)"));
+
+    byte SIV = myGPS.getSIV();
+    Serial.print(F(" SIV: "));
+    Serial.print(SIV);
+
+    Serial.println();
+  }
+}

examples/Example12_Reset/src/Example12_Reset.ino

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+/*
+  Test baud rate changes on serial, factory reset, and hard reset.
+  By: Thorsten von Eicken
+  Date: January 29rd, 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 reset the U-Box module.
+
+  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:
+  Connect the U-Blox serial port to Serial1
+  Open the serial monitor at 115200 baud to see the output
+*/
+
+#include <SparkFun_Ublox_Arduino_Library.h> //http://librarymanager/All#SparkFun_Ublox_GPS
+SFE_UBLOX_GPS myGPS;
+
+int state = 0; // steps through auto-baud, reset, etc states
+
+void setup()
+{
+  Serial.begin(115200);
+  while (!Serial); //Wait for user to open terminal
+  Serial.println("SparkFun Ublox Example");
+}
+
+void loop()
+{
+    Serial.print("===== STATE ");
+    Serial.println(state);
+    switch (state) {
+    case 0: // auto-baud connection, then switch to 38400 and save config
+        do {
+            Serial.println("GPS: trying 38400 baud");
+            Serial1.begin(38400);
+            if (myGPS.begin(Serial1)) break;
+
+            delay(100);
+            Serial.println("GPS: trying 9600 baud");
+            Serial1.begin(9600);
+            if (myGPS.begin(Serial1)) {
+                Serial.println("GPS: connected at 9600 baud, switching to 38400");
+                myGPS.setSerialRate(38400);
+                delay(100);
+            } else {
+                delay(2000); //Wait a bit before trying again to limit the Serial output flood
+            }
+        } while(1);
+        myGPS.setUART1Output(COM_TYPE_UBX); //Set the UART port to output UBX only
+        myGPS.saveConfiguration(); //Save the current settings to flash and BBR
+        Serial.println("GPS serial connected, saved config");
+        state++;
+        break;
+    case 1: // hardReset, expect to see GPS back at 38400 baud
+        Serial.println("Issuing hardReset (cold start)");
+        myGPS.hardReset();
+        delay(1000);
+        Serial1.begin(38400);
+        if (myGPS.begin(Serial1)) {
+            Serial.println("Success.");
+            state++;
+        } else {
+            Serial.println("*** GPS did not respond at 38400 baud, starting over.");
+            state = 0;
+        }
+        break;
+    case 2: // factoryReset, expect to see GPS back at 9600 baud
+        Serial.println("Issuing factoryReset");
+        myGPS.factoryReset();
+        delay(2000); // takes more than one second... a loop to resync would be best
+        Serial1.begin(9600);
+        if (myGPS.begin(Serial1)) {
+            Serial.println("Success.");
+            state++;
+        } else {
+            Serial.println("*** GPS did not come back at 9600 baud, starting over.");
+            state = 0;
+        }
+        break;
+    case 3: // print version info
+        Serial.print("GPS protocol version: ");
+        Serial.print(myGPS.getProtocolVersionHigh());
+        Serial.print('.');
+        Serial.print(myGPS.getProtocolVersionLow());
+        state = 0;
+    }
+    delay(1000);
+}