Diff: SDHCFileSystem.h
- Revision:
- 0:63ed631d8c3a
diff -r 000000000000 -r 63ed631d8c3a SDHCFileSystem.h
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/SDHCFileSystem.h Fri Jan 21 08:39:48 2011 +0000
@@ -0,0 +1,86 @@
+/* mbed SDFileSystem Library, for providing file access to SD cards
+ * Copyright (c) 2008-2010, sford
+ *
+ * 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.
+ */
+
+#ifndef MBED_SDHCFILESYSTEM_H
+#define MBED_SDHCFILESYSTEM_H
+
+#include "mbed.h"
+#include "FATFileSystem.h"
+
+/* Double Words */
+typedef unsigned long long uint64_t;
+typedef long long sint64_t;
+
+/** Access the filesystem on an SD Card using SPI
+ *
+ * @code
+ * #include "mbed.h"
+ * #include "SDFileSystem.h"
+ *
+ * SDFileSystem sd(p5, p6, p7, p12, "sd"); // mosi, miso, sclk, cs
+ *
+ * int main() {
+ * FILE *fp = fopen("/sd/myfile.txt", "w");
+ * fprintf(fp, "Hello World!\n");
+ * fclose(fp);
+ * }
+ */
+class SDFileSystem : public FATFileSystem {
+public:
+
+ /** Create the File System for accessing an SD Card using SPI
+ *
+ * @param mosi SPI mosi pin connected to SD Card
+ * @param miso SPI miso pin conencted to SD Card
+ * @param sclk SPI sclk pin connected to SD Card
+ * @param cs DigitalOut pin used as SD Card chip select
+ * @param name The name used to access the virtual filesystem
+ */
+ SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name);
+ virtual int disk_initialize();
+ virtual int disk_write(const char *buffer, int block_number);
+ virtual int disk_read(char *buffer, int block_number);
+ virtual int disk_status();
+ virtual int disk_sync();
+ virtual int disk_sectors();
+
+protected:
+
+ int _cmd(int cmd, int arg);
+ int _cmdx(int cmd, int arg);
+ int _cmd8();
+ int _cmd58();
+ int initialise_card();
+ int initialise_card_v1();
+ int initialise_card_v2();
+
+ int _read(char *buffer, int length);
+ int _write(const char *buffer, int length);
+ int _sd_sectors();
+ int _sectors;
+
+ SPI _spi;
+ DigitalOut _cs;
+ int cdv;
+};
+
+#endif