add formatting of ExtraFS area used by MeshCore

platformio.ini

@@ -6,8 +6,11 @@ build_flags =
   -D NRF52_S140=1
   -I src
   -L boards
+  -w
 framework = arduino
 monitor_speed = 115200
+lib_deps = 
+  https://github.com/oltaco/CustomLFS @ 0.2.1
 
 [env:FLASH_ERASE_nrf52_softdevice_v6]
 extends = nrf52_base
@@ -15,6 +18,7 @@ board = nrf52840_s140_v6
 build_flags = ${nrf52_base.build_flags}
   -I arch/nrf52/s140_6.1.1
   -I arch/nrf52/s140_6.1.1/nrf52
+lib_deps = ${nrf52_base.lib_deps}
 
 [env:FLASH_ERASE_nrf52_softdevice_v7]
 extends = nrf52_base
@@ -22,3 +26,4 @@ board = nrf52840_s140_v7
 build_flags = ${nrf52_base.build_flags}
   -I arch/nrf52/s140_7.3.0
   -I arch/nrf52/s140_7.3.0/nrf52
+lib_deps = ${nrf52_base.lib_deps}

src/main.cpp

@@ -1,6 +1,7 @@
 #include <Adafruit_LittleFS.h>
 #include <InternalFileSystem.h>
 #include <Adafruit_TinyUSB.h>
+#include <CustomLFS.h>
 
 using namespace Adafruit_LittleFS_Namespace;
 
@@ -11,6 +12,10 @@ void setup() {
   delay(500);
   InternalFS.format();
 
+  delay(500);
+  CustomLFS ExtraFS(0xD4000, 0x19000, 128);
+  ExtraFS.format();
+
   delay(500);
   enterUf2Dfu();
 }

src/variant.h

@@ -43,6 +43,12 @@ extern "C"
 #define PIN_SERIAL1_TX (-1)
 #define LED_STATE_ON LOW
 
+// Placeholder pins to allow CustomLFS to compile
+#define SPI_INTERFACES_COUNT    (1)
+#define PIN_SPI_MOSI            (255)
+#define PIN_SPI_MISO            (255)
+#define PIN_SPI_SCK             (255)
+
 #ifdef __cplusplus
 }
 #endif