1 | /* mbed Microcontroller Library
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2 | * Copyright (c) 2006-2012 ARM Limited
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3 | *
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4 | * Permission is hereby granted, free of charge, to any person obtaining a copy
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5 | * of this software and associated documentation files (the "Software"), to deal
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6 | * in the Software without restriction, including without limitation the rights
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7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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8 | * copies of the Software, and to permit persons to whom the Software is
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9 | * furnished to do so, subject to the following conditions:
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10 | *
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11 | * The above copyright notice and this permission notice shall be included in
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12 | * all copies or substantial portions of the Software.
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13 | *
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14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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20 | * SOFTWARE.
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21 | */
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22 | #ifndef MBED_SDFILESYSTEM_H
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23 | #define MBED_SDFILESYSTEM_H
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24 |
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25 | #include <stdint.h>
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26 | //#include <time.h>
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27 | #define __NEED_time_t
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28 | #include "../musl-1.1.18/include/bits/alltypes.h"
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29 | #include "gpio_api.h"
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30 | #include "spi_api.h"
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31 |
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32 | #ifdef __cplusplus
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33 | extern "C" {
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34 | #endif
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35 |
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36 | /* MMC card type flags (MMC_GET_TYPE) */
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37 | #define CT_FAIL 0x00
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38 | #define CT_MMC 0x01 /* MMC ver 3 */
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39 | #define CT_SD1 0x02 /* SD ver 1 */
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40 | #define CT_SD2 0x04 /* SD ver 2 */
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41 | #define CT_SDC (CT_SD1|CT_SD2) /* SD */
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42 | #define CT_BLOCK 0x08 /* Block addressing */
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43 |
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44 | /** Access the filesystem on an SD Card using SPI
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45 | *
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46 | * @code
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47 | * #include "mbed.h"
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48 | * #include "SDFileSystem.h"
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49 | *
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50 | * SDFileSystem sd(p5, p6, p7, p12, "sd"); // MOSI, MISO, SCLK, SSEL
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51 | *
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52 | * int main() {
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53 | * FILE *fp = fopen("/sd/mbed.txt", "w");
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54 | * fprintf(fp, "Hello World!\n");
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55 | * fclose(fp);
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56 | * }
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57 | * @endcode
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58 | */
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59 | typedef struct sdfs_s{
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60 | const char* name;
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61 | volatile uint8_t _is_initialized;
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62 | uint8_t _card_type;
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63 | uint8_t _csd[16], _cid[16];
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64 | uint64_t _capacity;
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65 | uint64_t _block_len;
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66 | uint64_t _sectors;
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67 | spi_t _spi;
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68 | gpio_t _cs;
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69 | int cdv;
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70 | uint32_t _init_sck;
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71 | uint32_t _transfer_sck;
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72 | } sdfs_t;
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73 |
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74 | /** Create the File System for accessing an SD Card using SPI
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75 | *
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76 | * @param mosi SPI mosi pin connected to SD Card
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77 | * @param miso SPI miso pin conencted to SD Card
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78 | * @param sclk SPI sclk pin connected to SD Card
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79 | * @param cs DigitalOut pin used as SD Card chip select
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80 | * @param name The name used to access the virtual filesystem
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81 | */
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82 | void sdfs_init(sdfs_t *obj, PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name);
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83 |
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84 | int sdfs_initialize(sdfs_t *obj);
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85 | int sdfs_status(sdfs_t *obj);
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86 | int sdfs_read(sdfs_t *obj, uint8_t * buffer, uint32_t sector, uint32_t count);
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87 | int sdfs_write(sdfs_t *obj, const uint8_t * buffer, uint32_t sector, uint32_t count);
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88 | int sdfs_sync(sdfs_t *obj);
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89 | uint64_t sdfs_sectors(sdfs_t *obj);
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90 | int sdfs_trim(sdfs_t *obj, uint32_t st, uint32_t ed);
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91 | int sdfs_get_ocr(sdfs_t *obj, uint8_t buff[4]);
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92 | int sdfs_get_sdstat(sdfs_t *obj, uint8_t buff[64]);
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93 |
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94 | #ifdef __cplusplus
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95 | }
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96 | #endif
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97 |
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98 | #endif
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