1 files changed, 69 insertions, 0 deletions
diff --git a/stmhal/ffconf.c b/stmhal/ffconf.c
new file mode 100644
index 0000000000..8f24ae822e
--- /dev/null
+++ b/stmhal/ffconf.c
@@ -0,0 +1,69 @@
+/*
+ * This file is part of the Micro Python project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2013, 2014 Damien P. George
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <string.h>
+
+#include "mpconfigport.h"
+#include "ff.h"
+#include "ffconf.h"
+
+extern BYTE CurrVol;
+
+// "path" is the path to lookup; will advance this pointer beyond the volume name.
+// Returns logical drive number (-1 means invalid path).
+int ff_get_ldnumber (const TCHAR** path) {
+    if (!(*path)) {
+        return -1;
+    }
+
+    if (**path != '/') {
+#if _FS_RPATH
+        return CurrVol;
+#else
+        return -1;
+#endif
+    } else if (strncmp(*path, "/flash", 6) == 0) {
+        if ((*path)[6] == '/') {
+            *path += 6;
+        } else if ((*path)[6] == '\0') {
+            *path = "/";
+        } else {
+            return -1;
+        }
+        return 0;
+    } else if (strncmp(*path, "/sd", 3) == 0) {
+        if ((*path)[3] == '/') {
+            *path += 3;
+        } else if ((*path)[3] == '\0') {
+            *path = "/";
+        } else {
+            return -1;
+        }
+        return 1;
+    } else {
+        return -1;
+    }
+}