AVR compatibility

SerialFlashChip.cpp

  */
 
 #include "SerialFlash.h"
-#include "SPIFIFO.h"
 
 #define CSCONFIG()  pinMode(6, OUTPUT)
 #define CSASSERT()  digitalWriteFast(6, LOW)
 #define CSRELEASE() digitalWriteFast(6, HIGH)
 #define SPICONFIG   SPISettings(50000000, MSBFIRST, SPI_MODE0)
 
+#if !defined(__arm__) || !defined(CORE_TEENSY)
+#define digitalWriteFast(pin, state) digitalWrite((pin), (state))
+#endif
+
 uint16_t SerialFlashChip::dirindex = 0;
 uint8_t SerialFlashChip::fourbytemode = 0;
 uint8_t SerialFlashChip::busy = 0;

examples/TestHardware/TestHardware.ino

   while (!Serial) ;
   delay(10);
 
-  SPI.setSCK(14);  // Audio shield has SCK on pin 14
-  SPI.setMOSI(7);  // Audio shield has MOSI on pin 7
+  //uncomment these if using Teensy audio shield
+  //SPI.setSCK(14);  // Audio shield has SCK on pin 14
+  //SPI.setMOSI(7);  // Audio shield has MOSI on pin 7
 
   Serial.println("Test Hardware");
   SerialFlash.begin();