src/main/msc/usbd_storage_emfat.c

   1 /*
   2  * Derived from github.com/fetisov/emfat/project/StorageMode.c
   3  */
   4
   5 /*
   6  * The MIT License (MIT)
   7  *
   8  * Copyright (c) 2015 by Sergey Fetisov <fsenok@gmail.com>
   9  *
  10  * Permission is hereby granted, free of charge, to any person obtaining a copy
  11  * of this software and associated documentation files (the "Software"), to deal
  12  * in the Software without restriction, including without limitation the rights
  13  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14  * copies of the Software, and to permit persons to whom the Software is
  15  * furnished to do so, subject to the following conditions:
  16  *
  17  * The above copyright notice and this permission notice shall be included in all
  18  * copies or substantial portions of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  23  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  26  * SOFTWARE.
  27  */
  28
  29 #include <stdbool.h>
  30
  31 #include "platform.h"
  32
  33 #include "common/utils.h"
  34
  35 #include "drivers/light_led.h"
  36 #include "drivers/usb_msc.h"
  37
  38 #include "msc/usbd_storage.h"
  39 #include "msc/usbd_storage_emfat.h"
  40
  41 #define STORAGE_LUN_NBR 1
  42
  43 static const uint8_t STORAGE_Inquirydata[] =
  44 {
  45     0x00, 0x80, 0x02, 0x02,
  46 #ifdef USE_HAL_DRIVER
  47     (STANDARD_INQUIRY_DATA_LEN - 5),
  48 #else
  49     (USBD_STD_INQUIRY_LENGTH - 5),
  50 #endif
  51     0x00, 0x00, 0x00,
  52     'B', 'E', 'T', 'A', 'F', 'L', 'T', ' ', // Manufacturer : 8 bytes
  53     'O', 'n', 'b', 'o', 'a', 'r', 'd', ' ', // Product      : 16 Bytes
  54     'F', 'l', 'a', 's', 'h', ' ', ' ', ' ', //
  55     ' ', ' ', ' ' ,' ',                     // Version      : 4 Bytes
  56 };
  57
  58 static int8_t STORAGE_Init(uint8_t lun)
  59 {
  60     UNUSED(lun);
  61
  62     LED0_OFF;
  63
  64     return 0;
  65 }
  66
  67 #ifdef USE_HAL_DRIVER
  68 static int8_t STORAGE_GetCapacity(uint8_t lun, uint32_t *block_num, uint16_t *block_size)
  69 #else
  70 static int8_t STORAGE_GetCapacity(uint8_t lun, uint32_t *block_num, uint32_t *block_size)
  71 #endif
  72 {
  73     UNUSED(lun);
  74     *block_size = 512;
  75     *block_num = emfat.disk_sectors;
  76     return 0;
  77 }
  78
  79 static int8_t STORAGE_IsReady(uint8_t lun)
  80 {
  81     UNUSED(lun);
  82     return 0;
  83 }
  84
  85 static int8_t STORAGE_IsWriteProtected(uint8_t lun)
  86 {
  87     UNUSED(lun);
  88     return 1;
  89 }
  90
  91 static int8_t STORAGE_Read(
  92     uint8_t lun,        // logical unit number
  93     uint8_t *buf,       // Pointer to the buffer to save data
  94     uint32_t blk_addr,  // address of 1st block to be read
  95     uint16_t blk_len)   // nmber of blocks to be read
  96 {
  97     UNUSED(lun);
  98     mscSetActive();
  99     emfat_read(&emfat, buf, blk_addr, blk_len);
 100     return 0;
 101 }
 102
 103 static int8_t STORAGE_Write(uint8_t lun,
 104     uint8_t *buf,
 105     uint32_t blk_addr,
 106     uint16_t blk_len)
 107 {
 108     UNUSED(lun);
 109     UNUSED(buf);
 110     UNUSED(blk_addr);
 111     UNUSED(blk_len);
 112
 113     return 1;
 114 }
 115
 116 static int8_t STORAGE_GetMaxLun(void)
 117 {
 118   return (STORAGE_LUN_NBR - 1);
 119 }
 120
 121 #ifdef USE_HAL_DRIVER
 122 USBD_StorageTypeDef
 123 #else
 124 USBD_STORAGE_cb_TypeDef
 125 #endif
 126 USBD_MSC_EMFAT_fops =
 127 {
 128     STORAGE_Init,
 129     STORAGE_GetCapacity,
 130     STORAGE_IsReady,
 131     STORAGE_IsWriteProtected,
 132     STORAGE_Read,
 133     STORAGE_Write,
 134     STORAGE_GetMaxLun,
 135     (int8_t *)STORAGE_Inquirydata,
 136 };