Initial commit

examples/helper/scan_spi.cpp

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+#include <Arduino.h>
+#include <SPI.h>
+#include <Wire.h>
+
+/*
+  Rui Santos
+  Complete project details at https://RandomNerdTutorials.com/esp32-spi-communication-arduino/
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files.
+
+  The above copyright notice and this permission notice shall be included in all
+  copies or substantial portions of the Software.
+*/
+
+// Find the default SPI pins for your board
+// Make sure you have the right board selected in Tools > Boards
+void setup()
+{
+  // put your setup code here, to run once:
+  Serial.begin(9600);
+  Serial.print("MOSI: ");
+  Serial.println(MOSI);
+  Serial.print("MISO: ");
+  Serial.println(MISO);
+  Serial.print("SCK: ");
+  Serial.println(SCK);
+  Serial.print("SS: ");
+  Serial.println(SS);
+}
+
+void loop()
+{
+  // put your main code here, to run repeatedly:
+}