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
  42 #define STORAGE_LUN_NBR 1
  43
  44 static const uint8_t STORAGE_Inquirydata[] =
  45 {
  46     0x00, 0x80, 0x02, 0x02,
  47 #ifdef USE_HAL_DRIVER
  48     (STANDARD_INQUIRY_DATA_LEN - 5),
  49 #else
  50     (USBD_STD_INQUIRY_LENGTH - 5),
  51 #endif
  52     0x00, 0x00, 0x00,
  53     'B', 'E', 'T', 'A', 'F', 'L', 'T', ' ', // Manufacturer : 8 bytes
  54     'O', 'n', 'b', 'o', 'a', 'r', 'd', ' ', // Product      : 16 Bytes
  55     'F', 'l', 'a', 's', 'h', ' ', ' ', ' ', //
  56     ' ', ' ', ' ' ,' ',                     // Version      : 4 Bytes
  57 };
  58
  59 static int8_t STORAGE_Init(uint8_t lun)
  60 {
  61     UNUSED(lun);
  62
  63     LED0_OFF;
  64
  65     return 0;
  66 }
  67
  68 #ifdef USE_HAL_DRIVER
  69 static int8_t STORAGE_GetCapacity(uint8_t lun, uint32_t *block_num, uint16_t *block_size)
  70 #else
  71 static int8_t STORAGE_GetCapacity(uint8_t lun, uint32_t *block_num, uint32_t *block_size)
  72 #endif
  73 {
  74     UNUSED(lun);
  75     *block_size = 512;
  76     *block_num = emfat.disk_sectors;
  77     return 0;
  78 }
  79
  80 static int8_t STORAGE_IsReady(uint8_t lun)
  81 {
  82     UNUSED(lun);
  83     return 0;
  84 }
  85
  86 static int8_t STORAGE_IsWriteProtected(uint8_t lun)
  87 {
  88     UNUSED(lun);
  89     return 1;
  90 }
  91
  92 static int8_t STORAGE_Read(
  93     uint8_t lun,        // logical unit number
  94     uint8_t *buf,       // Pointer to the buffer to save data
  95     uint32_t blk_addr,  // address of 1st block to be read
  96     uint16_t blk_len)   // nmber of blocks to be read
  97 {
  98     UNUSED(lun);
  99     mscSetActive();
 100     emfat_read(&emfat, buf, blk_addr, blk_len);
 101     return 0;
 102 }
 103
 104 static int8_t STORAGE_Write(uint8_t lun,
 105     uint8_t *buf,
 106     uint32_t blk_addr,
 107     uint16_t blk_len)
 108 {
 109     UNUSED(lun);
 110     UNUSED(buf);
 111     UNUSED(blk_addr);
 112     UNUSED(blk_len);
 113
 114     return 1;
 115 }
 116
 117 static int8_t STORAGE_GetMaxLun(void)
 118 {
 119   return (STORAGE_LUN_NBR - 1);
 120 }
 121
 122 #ifdef USE_HAL_DRIVER
 123 USBD_StorageTypeDef
 124 #else
 125 USBD_STORAGE_cb_TypeDef
 126 #endif
 127 USBD_MSC_EMFAT_fops =
 128 {
 129     STORAGE_Init,
 130     STORAGE_GetCapacity,
 131     STORAGE_IsReady,
 132     STORAGE_IsWriteProtected,
 133     STORAGE_Read,
 134     STORAGE_Write,
 135     STORAGE_GetMaxLun,
 136     (int8_t *)STORAGE_Inquirydata,
 137 };