LCD Driver, some teensy code, SDCard code, MBR/FAT32

ext/sd/fat32/DirIterator.h

@@ -0,0 +1,45 @@
+class DirIterator {
+
+	FS& fs;
+	ClusterNr nextCluster;
+	int curEntryInCluster;
+	uint8_t buf[512];
+
+public:
+
+	DirIterator(FS& fs, ClusterNr clusterNr) : fs(fs), nextCluster(clusterNr), curEntryInCluster(255) {
+
+	}
+
+	bool hasNext() {
+
+		while(true) {
+
+			++curEntryInCluster;
+
+			// reached end of cluster? load the next one
+			if (curEntryInCluster > fs.tmp.dirEntriesPerSector) {
+				fs.dev.read(fs.clusterToAbsPos(nextCluster), 512, buf);
+				nextCluster = fs.getNextCluster(nextCluster);
+				curEntryInCluster = 0;
+			}
+
+			DirEntry* desc = reinterpret_cast<DirEntry*>(buf + (sizeof(DirEntry) * curEntryInCluster));
+
+			if (desc->isLongFileName())		{continue;}
+			if (desc->isUnused())			{continue;}
+			if (desc->isEndOfDirectory())	{return false;}
+
+			return true;
+
+		}
+
+	}
+
+	DirEntry next() {
+		DirEntry* de = reinterpret_cast<DirEntry*>(buf + (sizeof(DirEntry) * curEntryInCluster));
+		return *de;
+	}
+
+};
+