micropython: add micropython component

components/language/micropython/tests/extmod/vfs_fat_oldproto.py

@@ -0,0 +1,59 @@
+try:
+    import uerrno
+    import uos
+except ImportError:
+    print("SKIP")
+    raise SystemExit
+
+try:
+    uos.VfsFat
+except AttributeError:
+    print("SKIP")
+    raise SystemExit
+
+
+class RAMFS_OLD:
+
+    SEC_SIZE = 512
+
+    def __init__(self, blocks):
+        self.data = bytearray(blocks * self.SEC_SIZE)
+
+    def readblocks(self, n, buf):
+        # print("readblocks(%s, %x(%d))" % (n, id(buf), len(buf)))
+        for i in range(len(buf)):
+            buf[i] = self.data[n * self.SEC_SIZE + i]
+
+    def writeblocks(self, n, buf):
+        # print("writeblocks(%s, %x)" % (n, id(buf)))
+        for i in range(len(buf)):
+            self.data[n * self.SEC_SIZE + i] = buf[i]
+
+    def sync(self):
+        pass
+
+    def count(self):
+        return len(self.data) // self.SEC_SIZE
+
+
+try:
+    bdev = RAMFS_OLD(50)
+except MemoryError:
+    print("SKIP")
+    raise SystemExit
+
+uos.VfsFat.mkfs(bdev)
+vfs = uos.VfsFat(bdev)
+uos.mount(vfs, "/ramdisk")
+
+# file io
+with vfs.open("file.txt", "w") as f:
+    f.write("hello!")
+
+print(list(vfs.ilistdir()))
+
+with vfs.open("file.txt", "r") as f:
+    print(f.read())
+
+vfs.remove("file.txt")
+print(list(vfs.ilistdir()))