update example with FRAM/custom external flash pin

Author: hathach

examples/MassStorage/msc_external_flash/msc_external_flash.ino

@@ -24,18 +24,27 @@
 #include "Adafruit_SPIFlash.h"
 #include "Adafruit_TinyUSB.h"
 
-// On-board external flash (QSPI or SPI) macros should already
-// defined in your board variant if supported
-// - EXTERNAL_FLASH_USE_QSPI
-// - EXTERNAL_FLASH_USE_CS/EXTERNAL_FLASH_USE_SPI
-#if defined(EXTERNAL_FLASH_USE_QSPI)
-  Adafruit_FlashTransport_QSPI flashTransport;
+// Uncomment to run example with FRAM
+// #define FRAM_CS   A5
+// #define FRAM_SPI  SPI
 
-#elif defined(EXTERNAL_FLASH_USE_SPI)
-  Adafruit_FlashTransport_SPI flashTransport(EXTERNAL_FLASH_USE_CS, EXTERNAL_FLASH_USE_SPI);
+#if defined(FRAM_CS) && defined(FRAM_SPI)
+  Adafruit_FlashTransport_SPI flashTransport(FRAM_CS, FRAM_SPI);
 
 #else
-  #error No QSPI/SPI flash are defined on your board variant.h !
+  // On-board external flash (QSPI or SPI) macros should already
+  // defined in your board variant if supported
+  // - EXTERNAL_FLASH_USE_QSPI
+  // - EXTERNAL_FLASH_USE_CS/EXTERNAL_FLASH_USE_SPI
+  #if defined(EXTERNAL_FLASH_USE_QSPI)
+    Adafruit_FlashTransport_QSPI flashTransport;
+
+  #elif defined(EXTERNAL_FLASH_USE_SPI)
+    Adafruit_FlashTransport_SPI flashTransport(EXTERNAL_FLASH_USE_CS, EXTERNAL_FLASH_USE_SPI);
+
+  #else
+    #error No QSPI/SPI flash are defined on your board variant.h !
+  #endif
 #endif
 
 Adafruit_SPIFlash flash(&flashTransport);

examples/MassStorage/msc_external_flash_sdcard/msc_external_flash_sdcard.ino

@@ -24,20 +24,30 @@
 #include "Adafruit_SPIFlash.h"
 #include "Adafruit_TinyUSB.h"
 
-// On-board external flash (QSPI or SPI) macros should already
-// defined in your board variant if supported
-// - EXTERNAL_FLASH_USE_QSPI
-// - EXTERNAL_FLASH_USE_CS/EXTERNAL_FLASH_USE_SPI
-#if defined(EXTERNAL_FLASH_USE_QSPI)
-  Adafruit_FlashTransport_QSPI flashTransport;
+// Uncomment to run example with FRAM
+// #define FRAM_CS   A5
+// #define FRAM_SPI  SPI
 
-#elif defined(EXTERNAL_FLASH_USE_SPI)
-  Adafruit_FlashTransport_SPI flashTransport(EXTERNAL_FLASH_USE_CS, EXTERNAL_FLASH_USE_SPI);
+#if defined(FRAM_CS) && defined(FRAM_SPI)
+  Adafruit_FlashTransport_SPI flashTransport(FRAM_CS, FRAM_SPI);
 
 #else
-  #error No QSPI/SPI flash are defined on your board variant.h !
+  // On-board external flash (QSPI or SPI) macros should already
+  // defined in your board variant if supported
+  // - EXTERNAL_FLASH_USE_QSPI
+  // - EXTERNAL_FLASH_USE_CS/EXTERNAL_FLASH_USE_SPI
+  #if defined(EXTERNAL_FLASH_USE_QSPI)
+    Adafruit_FlashTransport_QSPI flashTransport;
+
+  #elif defined(EXTERNAL_FLASH_USE_SPI)
+    Adafruit_FlashTransport_SPI flashTransport(EXTERNAL_FLASH_USE_CS, EXTERNAL_FLASH_USE_SPI);
+
+  #else
+    #error No QSPI/SPI flash are defined on your board variant.h !
+  #endif
 #endif
 
+
 Adafruit_SPIFlash flash(&flashTransport);
 
 // File system object on external flash from SdFat