add InternalFileSystem lib

Author: hathach

.gitignore

@@ -7,9 +7,6 @@
 *.app
 
 *.pyc
-/tools/nrfutil-0.5.2/build/
-/tools/nrfutil-0.5.2/dist/
-/tools/nrfutil-0.5.2/nrfutil.egg-info/
 /tools/.idea/
 /tools/midi_tests/node_modules
 

libraries/InternalFileSytem/examples/Internal_Format/Internal_Format.ino

@@ -0,0 +1,52 @@
+/*********************************************************************
+ This is an example for our nRF52 based Bluefruit LE modules
+
+ Pick one up today in the adafruit shop!
+
+ Adafruit invests time and resources providing this open source code,
+ please support Adafruit and open-source hardware by purchasing
+ products from Adafruit!
+
+ MIT license, check LICENSE for more information
+ All text above, and the splash screen below must be included in
+ any redistribution
+*********************************************************************/
+
+#include <Adafruit_LittleFS.h>
+#include <InternalFileSystem.h>
+
+using namespace Adafruit_LittleFS_Namespace;
+
+// the setup function runs once when you press reset or power the board
+void setup() 
+{
+  Serial.begin(115200);
+  while ( !Serial ) delay(10);   // for nrf52840 with native usb
+
+  Serial.println("InternalFS Format Example");
+  Serial.println();
+
+  // Wait for user input to run.
+  Serial.println("This sketch will destroy all of your data in External Flash!");
+  Serial.print("Enter any keys to continue:");
+  while ( !Serial.available() ) delay(1);
+  Serial.println();
+  Serial.println();
+
+  // Initialize Internal File System
+  InternalFS.begin();
+
+  Serial.print("Formating ... ");
+  delay(1); // for message appear on monitor
+
+  // Format 
+  InternalFS.format();
+
+  Serial.println("Done");
+}
+
+// the loop function runs over and over again forever
+void loop() 
+{
+  // nothing to do
+}

libraries/InternalFileSytem/examples/Internal_ListFiles/Internal_ListFiles.ino

@@ -0,0 +1,124 @@
+/*********************************************************************
+ This is an example for our nRF52 based Bluefruit LE modules
+
+ Pick one up today in the adafruit shop!
+
+ Adafruit invests time and resources providing this open source code,
+ please support Adafruit and open-source hardware by purchasing
+ products from Adafruit!
+
+ MIT license, check LICENSE for more information
+ All text above, and the splash screen below must be included in
+ any redistribution
+*********************************************************************/
+
+#include <Adafruit_LittleFS.h>
+#include <InternalFileSystem.h>
+
+using namespace Adafruit_LittleFS_Namespace;
+
+/* This example  print out Internal Flash contents up to
+ * MAX_LEVEL level of directories (including root)
+ * WARNING: This example uses recursive call to print out directory tree
+ * be extra careful, high number of MAX_LEVEL can cause memory overflow
+ */
+#define MAX_LEVEL   2
+
+// the setup function runs once when you press reset or power the board
+void setup() 
+{
+  Serial.begin(115200);
+  while ( !Serial ) delay(10);   // for nrf52840 with native usb
+  
+  Serial.println("InternalFS List Files Example");
+
+  // Initialize Internal File System
+  InternalFS.begin();
+
+  // Print whole directory tree of root whose level is 0
+  printTreeDir("/", 0);
+
+  // Print prompt
+  Serial.println();
+  Serial.println("Enter anything to print directory tree:");
+}
+
+// the loop function runs over and over again forever
+void loop() 
+{
+  if ( Serial.available() )
+  {
+    delay(10); // delay for all input arrived
+    while( Serial.available() ) Serial.read();
+
+    printTreeDir("/", 0);
+    
+    // Print prompt
+    Serial.println();
+    Serial.println("Enter anything to print directory tree:");
+  }
+}
+
+/**************************************************************************/
+/*!
+    @brief  Print out whole directory tree of an folder
+            until the level reach MAX_LEVEL
+
+    @note   Recursive call
+*/
+/**************************************************************************/
+void printTreeDir(const char* cwd, uint8_t level)
+{
+  // Open the input folder
+  File dir(cwd, FILE_READ, InternalFS);
+
+  // Print root
+  if (level == 0) Serial.println("root");
+ 
+  // File within folder
+  File item(InternalFS);
+
+  // Loop through the directory 
+  while( (item = dir.openNextFile(FILE_READ)) )
+  {
+    // Indentation according to dir level
+    for(int i=0; i<level; i++) Serial.print("|  ");
+
+    Serial.print("|_ ");
+    Serial.print( item.name() );
+
+    if ( item.isDirectory() )
+    {
+      Serial.println("/");
+
+      // ATTENTION recursive call to print sub folder with level+1 !!!!!!!!
+      // High number of MAX_LEVEL can cause memory overflow
+      if ( level < MAX_LEVEL )
+      {
+        char dpath[strlen(cwd) + strlen(item.name()) + 2 ];
+        strcpy(dpath, cwd);
+        strcat(dpath, "/");
+        strcat(dpath, item.name());
+        
+        printTreeDir( dpath, level+1 );
+      }
+    }else
+    {
+      // Print file size starting from position 30
+      int pos = level*3 + 3 + strlen(item.name());
+
+      // Print padding
+      for (int i=pos; i<30; i++) Serial.print(' ');
+
+      // Print at least one extra space in case current position > 50
+      Serial.print(' ');
+      
+      Serial.print( item.size() );
+      Serial.println( " Bytes");
+    }
+
+    item.close();
+  }
+
+  dir.close();
+}

libraries/InternalFileSytem/examples/Internal_ReadWrite/Internal_ReadWrite.ino

@@ -0,0 +1,82 @@
+/*********************************************************************
+ This is an example for our nRF52 based Bluefruit LE modules
+
+ Pick one up today in the adafruit shop!
+
+ Adafruit invests time and resources providing this open source code,
+ please support Adafruit and open-source hardware by purchasing
+ products from Adafruit!
+
+ MIT license, check LICENSE for more information
+ All text above, and the splash screen below must be included in
+ any redistribution
+*********************************************************************/
+
+#include <Adafruit_LittleFS.h>
+#include <InternalFileSystem.h>
+
+using namespace Adafruit_LittleFS_Namespace;
+
+#define FILENAME    "/adafruit.txt"
+#define CONTENTS    "Adafruit Little File System test file contents"
+
+File file(InternalFS);
+
+// the setup function runs once when you press reset or power the board
+void setup() 
+{
+  Serial.begin(115200);
+  while ( !Serial ) delay(10);   // for nrf52840 with native usb
+
+  Serial.println("Internal Read Write File Example");
+  Serial.println();
+
+  // Wait for user input to run. Otherwise the code will 
+  // always run immediately after flash and create the FILENAME in advance
+  Serial.print("Enter to any keys to continue:");
+  while ( !Serial.available() )
+  {
+    delay(1);
+  }
+  Serial.println();
+  Serial.println();
+
+  // Initialize Internal File System
+  InternalFS.begin();
+
+  file.open(FILENAME, FILE_READ);
+
+  // file existed
+  if ( file )
+  {
+    Serial.println(FILENAME " file exists");
+    
+    uint32_t readlen;
+    char buffer[64] = { 0 };
+    readlen = file.read(buffer, sizeof(buffer));
+
+    buffer[readlen] = 0;
+    Serial.println(buffer);
+    file.close();
+  }else
+  {
+    Serial.print("Open " FILENAME " file to write ... ");
+
+    if( file.open(FILENAME, FILE_WRITE) )
+    {
+      Serial.println("OK");
+      file.write(CONTENTS, strlen(CONTENTS));
+      file.close();
+    }else
+    {
+      Serial.println("Failed!");
+    }
+  }
+
+  Serial.println("Done");
+}
+
+// the loop function runs over and over again forever
+void loop() 
+{
+}

libraries/InternalFileSytem/library.properties

@@ -0,0 +1,10 @@
+name=Adafruit Internal File System on Bluefruit nRF52
+version=0.10.5
+author=Adafruit
+maintainer=Adafruit <[email protected]>
+sentence=Adafruit Internal File System on Bluefruit nRF52
+paragraph=Adafruit Internal File System on Bluefruit nRF52
+category=Data Storage
+url=https://github.com/adafruit/Adafruit_nRF52_Arduino
+architectures=*
+includes=InternalFileSystem.h