USBMSD SD card Hello World for Mbed platforms
Dependencies: mbed USBMSD_SD USBDevice
Diff: USBDevice/USBMSD/USB_SDcard.h
- Revision:
- 4:980e6470dcce
- Child:
- 6:126c4d980196
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/USBDevice/USBMSD/USB_SDcard.h Sat Nov 12 17:53:04 2011 +0000 @@ -0,0 +1,82 @@ +/* mbed USB_SDcard Library, for accessing 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 USB_SDCARD_H +#define USB_SDCARD_H + +#include "mbed.h" +#include "USBMSD.h" + +class USB_SDcard : public USBMSD { +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 + */ + USB_SDcard(PinName mosi = p5, PinName miso = p6, PinName sclk = p7, PinName cs = p8); + + /* + * read a block on a storage chip + * + * @param data pointer where will be stored read data + * @param block block number + * @returns 0 if successful + */ + virtual int blockRead(uint8_t * data, uint16_t block); + + /* + * write a block on a storage chip + * + * @param data data to write + * @param block block number + * @returns 0 if successful + */ + virtual int blockWrite(uint8_t * data, uint16_t block); + +protected: + + int init(); + int disk_status(); + int disk_sync(); + int disk_sectors(); + 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; +}; + +#endif