Littlefs rebased to Master (#1205)

* Littlefs

bin/mklittlefs.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+import getopt
+import sys
+import os
+from littlefs import LittleFS
+from pathlib import Path
+
+print( "Building LittleFS image..." )
+
+argList = sys.argv[1:]
+arxx = { argList[i]: argList[i+1] for i in range(0, len(argList)-1, 2) }
+
+dataPath = arxx["-c"]
+blockSize = int(arxx["-b"])
+blockCount = int(arxx["-s"]) / blockSize
+
+cwd = os.getcwd()
+
+os.chdir(dataPath)
+
+fileList = []
+dirList = []
+
+for (dirpath, dirnames, filenames) in os.walk('.'):
+    for f in filenames:
+        if (f[:1] != '.'):
+            fileList.append( os.path.join(dirpath, f) )
+    for d in dirnames:
+        if (d[:1] != '.'):
+            dirList.append( os.path.join(dirpath, d) )
+
+fs = LittleFS(block_size=blockSize, block_count=blockCount) # create a 448kB partition
+
+for curDir in dirList:
+    print( "Creating dir " + curDir )
+    fs.mkdir( curDir )
+        
+for curFile in fileList:
+    print( "Adding file " + curFile )
+    with open( curFile, 'rb' ) as f:
+        data = f.read()
+
+    with fs.open( curFile, 'wb') as fh:
+        fh.write( data )
+
+outName = argList[-1]
+
+os.chdir(cwd)
+
+with open(outName, 'wb') as fh:
+    fh.write(fs.context.buffer)