Rename to DEFAULT_SPI_SETTINGS to prevent accidential overwriting and to ensure the semantic of the variable is clear.

Author: aentinger

libraries/SPI/SPI.h

@@ -59,7 +59,7 @@ class ArduinoSPI : public SPIClass
 private:
     void enableSciSpiIrqs();
 
-    arduino::SPISettings settings = arduino::SPISettings(1000000, MSBFIRST, arduino::SPI_MODE0);
+    arduino::SPISettings const DEFAULT_SPI_SETTINGS = arduino::SPISettings(1000000, MSBFIRST, arduino::SPI_MODE0);
     static uint8_t initialized;
     static uint8_t interruptMode; // 0=none, 1=mask, 2=global
     static uint8_t interruptMask; // which interrupts to mask