Project_OCE360

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Mark Schwarzer / Mbed 2 deprecated Project_OCE360

SDFileSystem/SDFileSystem.h@16:54c15eaadf88, 2020-12-10 (annotated)

Committer:: jrschaedler
Date:: Thu Dec 10 14:09:58 2020 +0000
Revision:: 16:54c15eaadf88
Parent:: 0:852fb667f2d6

final test?

Who changed what in which revision?

User	Revision	Line number	New contents of line
markschwarzer	0:852fb667f2d6	1	/* mbed Microcontroller Library
markschwarzer	0:852fb667f2d6	2	* Copyright (c) 2006-2012 ARM Limited
markschwarzer	0:852fb667f2d6	3	*
markschwarzer	0:852fb667f2d6	4	* Permission is hereby granted, free of charge, to any person obtaining a copy
markschwarzer	0:852fb667f2d6	5	* of this software and associated documentation files (the "Software"), to deal
markschwarzer	0:852fb667f2d6	6	* in the Software without restriction, including without limitation the rights
markschwarzer	0:852fb667f2d6	7	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
markschwarzer	0:852fb667f2d6	8	* copies of the Software, and to permit persons to whom the Software is
markschwarzer	0:852fb667f2d6	9	* furnished to do so, subject to the following conditions:
markschwarzer	0:852fb667f2d6	10	*
markschwarzer	0:852fb667f2d6	11	* The above copyright notice and this permission notice shall be included in
markschwarzer	0:852fb667f2d6	12	* all copies or substantial portions of the Software.
markschwarzer	0:852fb667f2d6	13	*
markschwarzer	0:852fb667f2d6	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
markschwarzer	0:852fb667f2d6	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
markschwarzer	0:852fb667f2d6	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
markschwarzer	0:852fb667f2d6	17	* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
markschwarzer	0:852fb667f2d6	18	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
markschwarzer	0:852fb667f2d6	19	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
markschwarzer	0:852fb667f2d6	20	* SOFTWARE.
markschwarzer	0:852fb667f2d6	21	*/
markschwarzer	0:852fb667f2d6	22	#ifndef MBED_SDFILESYSTEM_H
markschwarzer	0:852fb667f2d6	23	#define MBED_SDFILESYSTEM_H
markschwarzer	0:852fb667f2d6	24
markschwarzer	0:852fb667f2d6	25	#include "mbed.h"
markschwarzer	0:852fb667f2d6	26	#include "FATFileSystem.h"
markschwarzer	0:852fb667f2d6	27	#include <stdint.h>
markschwarzer	0:852fb667f2d6	28
markschwarzer	0:852fb667f2d6	29	/** Access the filesystem on an SD Card using SPI
markschwarzer	0:852fb667f2d6	30	*
markschwarzer	0:852fb667f2d6	31	* @code
markschwarzer	0:852fb667f2d6	32	* #include "mbed.h"
markschwarzer	0:852fb667f2d6	33	* #include "SDFileSystem.h"
markschwarzer	0:852fb667f2d6	34	*
markschwarzer	0:852fb667f2d6	35	* SDFileSystem sd(p5, p6, p7, p12, "sd"); // mosi, miso, sclk, cs
markschwarzer	0:852fb667f2d6	36	*
markschwarzer	0:852fb667f2d6	37	* int main() {
markschwarzer	0:852fb667f2d6	38	* FILE *fp = fopen("/sd/myfile.txt", "w");
markschwarzer	0:852fb667f2d6	39	* fprintf(fp, "Hello World!\n");
markschwarzer	0:852fb667f2d6	40	* fclose(fp);
markschwarzer	0:852fb667f2d6	41	* }
markschwarzer	0:852fb667f2d6	42	*/
markschwarzer	0:852fb667f2d6	43	class SDFileSystem : public FATFileSystem {
markschwarzer	0:852fb667f2d6	44	public:
markschwarzer	0:852fb667f2d6	45
markschwarzer	0:852fb667f2d6	46	/** Create the File System for accessing an SD Card using SPI
markschwarzer	0:852fb667f2d6	47	*
markschwarzer	0:852fb667f2d6	48	* @param mosi SPI mosi pin connected to SD Card
markschwarzer	0:852fb667f2d6	49	* @param miso SPI miso pin conencted to SD Card
markschwarzer	0:852fb667f2d6	50	* @param sclk SPI sclk pin connected to SD Card
markschwarzer	0:852fb667f2d6	51	* @param cs DigitalOut pin used as SD Card chip select
markschwarzer	0:852fb667f2d6	52	* @param name The name used to access the virtual filesystem
markschwarzer	0:852fb667f2d6	53	*/
markschwarzer	0:852fb667f2d6	54	SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name);
markschwarzer	0:852fb667f2d6	55	virtual int disk_initialize();
markschwarzer	0:852fb667f2d6	56	virtual int disk_status();
markschwarzer	0:852fb667f2d6	57	virtual int disk_read(uint8_t* buffer, uint32_t block_number, uint32_t count);
markschwarzer	0:852fb667f2d6	58	virtual int disk_write(const uint8_t* buffer, uint32_t block_number, uint32_t count);
markschwarzer	0:852fb667f2d6	59	virtual int disk_sync();
markschwarzer	0:852fb667f2d6	60	virtual uint32_t disk_sectors();
markschwarzer	0:852fb667f2d6	61
markschwarzer	0:852fb667f2d6	62	protected:
markschwarzer	0:852fb667f2d6	63
markschwarzer	0:852fb667f2d6	64	int _cmd(int cmd, int arg);
markschwarzer	0:852fb667f2d6	65	int _cmdx(int cmd, int arg);
markschwarzer	0:852fb667f2d6	66	int _cmd8();
markschwarzer	0:852fb667f2d6	67	int _cmd58();
markschwarzer	0:852fb667f2d6	68	int initialise_card();
markschwarzer	0:852fb667f2d6	69	int initialise_card_v1();
markschwarzer	0:852fb667f2d6	70	int initialise_card_v2();
markschwarzer	0:852fb667f2d6	71
markschwarzer	0:852fb667f2d6	72	int _read(uint8_t * buffer, uint32_t length);
markschwarzer	0:852fb667f2d6	73	int _write(const uint8_t *buffer, uint32_t length);
markschwarzer	0:852fb667f2d6	74	uint32_t _sd_sectors();
markschwarzer	0:852fb667f2d6	75	uint32_t _sectors;
markschwarzer	0:852fb667f2d6	76
markschwarzer	0:852fb667f2d6	77	void set_init_sck(uint32_t sck) { _init_sck = sck; }
markschwarzer	0:852fb667f2d6	78	// Note: The highest SPI clock rate is 20 MHz for MMC and 25 MHz for SD
markschwarzer	0:852fb667f2d6	79	void set_transfer_sck(uint32_t sck) { _transfer_sck = sck; }
markschwarzer	0:852fb667f2d6	80	uint32_t _init_sck;
markschwarzer	0:852fb667f2d6	81	uint32_t _transfer_sck;
markschwarzer	0:852fb667f2d6	82
markschwarzer	0:852fb667f2d6	83	SPI _spi;
markschwarzer	0:852fb667f2d6	84	DigitalOut _cs;
markschwarzer	0:852fb667f2d6	85	int cdv;
markschwarzer	0:852fb667f2d6	86	int _is_initialized;
markschwarzer	0:852fb667f2d6	87	};
markschwarzer	0:852fb667f2d6	88
markschwarzer	0:852fb667f2d6	89	#endif