Slight modification to SDFileSystem so that if the first initialization doesn't do the trick it tries doing it again (which so far has fixed every issue for me)
Fork of SDFileSystem by
SDFileSystem.h
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2012 ARM Limited 00003 * 00004 * Permission is hereby granted, free of charge, to any person obtaining a copy 00005 * of this software and associated documentation files (the "Software"), to deal 00006 * in the Software without restriction, including without limitation the rights 00007 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 00008 * copies of the Software, and to permit persons to whom the Software is 00009 * furnished to do so, subject to the following conditions: 00010 * 00011 * The above copyright notice and this permission notice shall be included in 00012 * all copies or substantial portions of the Software. 00013 * 00014 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 00015 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 00016 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 00017 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 00018 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 00019 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 00020 * SOFTWARE. 00021 */ 00022 #ifndef MBED_SDFILESYSTEM_H 00023 #define MBED_SDFILESYSTEM_H 00024 00025 #include "mbed.h" 00026 #include "FATFileSystem.h" 00027 #include <stdint.h> 00028 00029 /** Access the filesystem on an SD Card using SPI 00030 * 00031 * @code 00032 * #include "mbed.h" 00033 * #include "SDFileSystem.h" 00034 * 00035 * SDFileSystem sd(p5, p6, p7, p12, "sd"); // mosi, miso, sclk, cs 00036 * 00037 * int main() { 00038 * FILE *fp = fopen("/sd/myfile.txt", "w"); 00039 * fprintf(fp, "Hello World!\n"); 00040 * fclose(fp); 00041 * } 00042 */ 00043 class SDFileSystem : public FATFileSystem { 00044 public: 00045 00046 /** Create the File System for accessing an SD Card using SPI 00047 * 00048 * @param mosi SPI mosi pin connected to SD Card 00049 * @param miso SPI miso pin conencted to SD Card 00050 * @param sclk SPI sclk pin connected to SD Card 00051 * @param cs DigitalOut pin used as SD Card chip select 00052 * @param name The name used to access the virtual filesystem 00053 */ 00054 SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name); 00055 virtual int disk_initialize(); 00056 virtual int disk_status(); 00057 virtual int disk_read(uint8_t * buffer, uint64_t block_number); 00058 virtual int disk_write(const uint8_t * buffer, uint64_t block_number); 00059 virtual int disk_sync(); 00060 virtual uint64_t disk_sectors(); 00061 00062 protected: 00063 00064 int _cmd(int cmd, int arg); 00065 int _cmdx(int cmd, int arg); 00066 int _cmd8(); 00067 int _cmd58(); 00068 int initialise_card(); 00069 int initialise_card_v1(); 00070 int initialise_card_v2(); 00071 00072 int _read(uint8_t * buffer, uint32_t length); 00073 int _write(const uint8_t *buffer, uint32_t length); 00074 uint64_t _sd_sectors(); 00075 uint64_t _sectors; 00076 00077 SPI _spi; 00078 DigitalOut _cs; 00079 int cdv; 00080 int tried_again; 00081 }; 00082 00083 #endif
Generated on Mon Jul 18 2022 18:01:37 by 1.7.2