Move SPI example into its own folder. Make it generic so it will run on ATmega328

examples/SPI/Example1_GetPosition/Example1_GetPosition.ino

@@ -1,5 +1,5 @@
 /*
-  Reading lat and long via UBX binary commands over SPI (ESP32 specific example)
+  Reading lat and long via UBX binary commands over SPI
   By: Andrew Berridge
   Date: 27th June 2021
   License: MIT. See license file for more information but you can
@@ -19,7 +19,8 @@
   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
+  NEO-M8U: https://www.sparkfun.com/products/16329
+  NEO-M9N: https://www.sparkfun.com/products/17285
 
   Hardware Connections:
   You need to connect the SPI pins from your microcontroller to the specific pins on your SparkFun product. 
@@ -28,7 +29,7 @@
   
   Most new boards now use the terms:
   CS - Chip Select
-  COP - Controller Out, Peripheral In
+  COPI - Controller Out, Peripheral In
   CIPO - Controller in, Peripheral Out
   SCK - Serial Clock
 
@@ -36,10 +37,12 @@
   (see here for the standard Arduino one: https://www.arduino.cc/en/reference/SPI) or the microcontroller. The
   ESP32 has two standard, selectable SPI ports, for example.
 
-  IMPORTANT: there have been reports that some ublox devices do not respond to the UBX protocol over SPI
+  To enable SPI communication, you will need to solder the DSEL/SPI jumper closed on your u-blox board.
+
+  IMPORTANT: there have been reports that some u-blox devices do not respond to the UBX protocol over SPI
   with the factory settings. You may find you need to connect to the device via USB and u-center and set
   the incoming protocol to UBX only. Make sure you disable all other protocols as inputs if you can't
-  get things to work! Hopefully this is just a bug in the ublox firmware that will be fixed soon ;-)
+  get things to work! Hopefully this is just a bug in the u-blox firmware that will be fixed soon ;-)
 
 */
 
@@ -48,10 +51,20 @@
 #include <SparkFun_u-blox_GNSS_Arduino_Library.h> //http://librarymanager/All#SparkFun_u-blox_GNSS
 SFE_UBLOX_GNSS myGNSS;
 
+// #########################################
+
 // Instantiate an instance of the SPI class. 
-// This is the default ESP32 SPI interface. Your configuration may be different, depending on the microcontroller you are using!
-SPIClass spiPort (HSPI); 
-const uint8_t csPin = 15; // Change this to suit your own connection for the chip select pin
+// Your configuration may be different, depending on the microcontroller you are using!
+
+#define spiPort SPI // This is the SPI port on standard Ardino boards. Comment this line if you want to use a different port.
+
+//SPIClass spiPort (HSPI); // This is the default SPI interface on some ESP32 boards. Uncomment this line if you are using ESP32.
+
+// #########################################
+
+const uint8_t csPin = 10; // On ATmega328 boards, SPI Chip Select is usually pin 10. Change this to match your board.
+
+// #########################################
 
 long lastTime = 0; //Simple local timer. Limits amount of SPI traffic to u-blox module.
 
@@ -59,24 +72,21 @@ void setup()
 {
   Serial.begin(115200);
   while (!Serial); //Wait for user to open terminal
-  Serial.println("SparkFun u-blox Example");
+  Serial.println(F("SparkFun u-blox Example"));
 
-  spiPort.begin(); 
+  spiPort.begin(); // begin the SPI port
 
-  myGNSS.setFileBufferSize(100); // set the file buffer size
+  //myGNSS.enableDebugging(); // Uncomment this line to see helpful debug messages on Serial
 
   // Connect to the u-blox module using SPI port, csPin and speed setting
-  // ublox devices generally work up to 5Mhz. We'll use 4Mhz for this example:
+  // ublox devices generally work up to 5MHz. We'll use 4MHz for this example:
   if (myGNSS.begin(spiPort, csPin, 4000000) == false) 
   {
     Serial.println(F("u-blox GNSS not detected on SPI bus. Please check wiring. Freezing."));
     while (1);
   }
-  myGNSS.disableMessage(UBX_CLASS_HNR, UBX_HNR_PVT, 0x04);
-  myGNSS.disableMessage(UBX_CLASS_HNR, UBX_HNR_ATT, 0x04);
-  myGNSS.disableMessage(UBX_CLASS_HNR, UBX_HNR_INS, 0x04);
-  myGNSS.setAutoPVT(false); //Tell the GNSS to "send" each solution
-  myGNSS.setPortInput(COM_PORT_SPI, COM_TYPE_UBX); //Set the SPI port to output UBX only (turn off NMEA noise)
+  
+  myGNSS.setPortOutput(COM_PORT_SPI, COM_TYPE_UBX); //Set the SPI port to output UBX only (turn off NMEA noise)
   myGNSS.saveConfigSelective(VAL_CFG_SUBSEC_IOPORT); //Save (only) the communications port settings to flash and BBR
 }