Correct #20. Add .end. Add getFileBufferSize. Add Example26

examples/Example26_End/Example26_End.ino

@@ -0,0 +1,91 @@
+/*
+  Demonstrating how to use "end"
+  By: Paul Clark
+  SparkFun Electronics
+  Date: April 1st, 2021
+  License: MIT. See license file for more information but you can
+  basically do whatever you want with this code.
+
+  This example shows how to use the end function.
+  End will stop all automatic message processing and free (nearly) all used RAM.
+  The file buffer is deleted (if it exists).
+  
+  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 GNSS 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 GNSS
+
+#include <SparkFun_u-blox_GNSS_Arduino_Library.h> //http://librarymanager/All#SparkFun_u-blox_GNSS
+SFE_UBLOX_GNSS myGNSS;
+
+void setup()
+{
+  Serial.begin(115200);
+  while (!Serial); //Wait for user to open terminal
+  Serial.println("SparkFun u-blox Example");
+
+  Wire.begin();
+
+  //myGNSS.enableDebugging(); // Uncomment this line to enable helpful debug messages on Serial
+  
+  if (myGNSS.begin() == false) //Connect to the u-blox module using Wire port
+  {
+    Serial.println(F("u-blox GNSS not detected at default I2C address. Please check wiring. Freezing."));
+    while (1);
+  }
+
+  myGNSS.setI2COutput(COM_TYPE_UBX); //Set the I2C port to output UBX only (turn off NMEA noise)
+  //myGNSS.saveConfiguration(); //Optional: Save the current settings to flash and BBR
+
+  myGNSS.end(); // Call end now just because we can - it won't do much as we haven't used any automatic messages
+}
+
+void loop()
+{
+  // Allocate 128 bytes for file storage - this checks that issue #20 has been resolved
+  // Allocating only 128 bytes will let this code run on the ATmega328P
+  // If your processor has plenty of RAM, you can increase this to something useful like 16KB
+  myGNSS.setFileBufferSize(128);
+  
+  if (myGNSS.begin() == false) //Connect to the u-blox module using Wire port
+  {
+    Serial.println(F("u-blox GNSS not detected. Freezing."));
+    while (1);
+  }
+
+  Serial.print(F("The file buffer size is: "));
+  Serial.println(myGNSS.getFileBufferSize());    
+
+  // Request Position, Velocity, Time
+  // RAM will be allocated for PVT message processing
+  // getPVT will return true is fresh PVT data was received and processed
+  if (myGNSS.getPVT())
+  {
+    long latitude = myGNSS.getLatitude();
+    Serial.print(F("Lat: "));
+    Serial.print(latitude);
+
+    long longitude = myGNSS.getLongitude();
+    Serial.print(F(" Long: "));
+    Serial.print(longitude);
+    Serial.print(F(" (degrees * 10^-7)"));
+
+    long altitude = myGNSS.getAltitude();
+    Serial.print(F(" Alt: "));
+    Serial.print(altitude);
+    Serial.println(F(" (mm)"));
+  }
+
+  // Calling end will free the RAM allocated for file storage and PVT processing
+  // Calling end is optional. You can comment the next line if you want to.
+  myGNSS.end();
+}