src/main/msc/emfat_file.c

   1 /*
   2  * This file is part of Cleanflight and Betaflight.
   3  *
   4  * Cleanflight and Betaflight are free software. You can redistribute
   5  * this software and/or modify this software under the terms of the
   6  * GNU General Public License as published by the Free Software
   7  * Foundation, either version 3 of the License, or (at your option)
   8  * any later version.
   9  *
  10  * Cleanflight and Betaflight are distributed in the hope that they
  11  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  12  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  13  * See the GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this software.
  17  *
  18  * If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 /*
  22  * Author: jflyper@github.com
  23  */
  24
  25 #include "platform.h"
  26 #include "emfat.h"
  27 #include "emfat_file.h"
  28
  29 #include "common/printf.h"
  30 #include "common/strtol.h"
  31 #include "common/time.h"
  32 #include "common/utils.h"
  33
  34 #include "drivers/flash.h"
  35 #include "drivers/light_led.h"
  36 #include "drivers/time.h"
  37 #include "drivers/usb_msc.h"
  38
  39 #include "io/flashfs.h"
  40
  41 #include "pg/flash.h"
  42
  43 #include "msc/usbd_storage.h"
  44
  45 #define FILESYSTEM_SIZE_MB 256
  46 #define HDR_BUF_SIZE 32
  47
  48 #define USE_EMFAT_AUTORUN
  49 #define USE_EMFAT_ICON
  50 //#define USE_EMFAT_README
  51
  52 #ifdef USE_EMFAT_AUTORUN
  53 static const char autorun_file[] =
  54     "[autorun]\r\n"
  55     "icon=icon.ico\r\n"
  56     "label=Betaflight Onboard Flash\r\n" ;
  57 #define AUTORUN_SIZE (sizeof(autorun_file) - 1)
  58 #define EMFAT_INCR_AUTORUN 1
  59 #else
  60 #define EMFAT_INCR_AUTORUN 0
  61 #endif
  62
  63 #ifdef USE_EMFAT_README
  64 static const char readme_file[] =
  65     "This is readme file\r\n";
  66 #define README_SIZE  (sizeof(readme_file) - 1)
  67 #define EMFAT_INCR_README 1
  68 #else
  69 #define EMFAT_INCR_README 0
  70 #endif
  71
  72 #ifdef USE_EMFAT_ICON
  73 static const char icon_file[] =
  74 {
  75     0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x18, 0x18, 0x00, 0x00, 0x01, 0x00, 0x20, 0x00, 0x28, 0x09,
  76     0x00, 0x00, 0x16, 0x00, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x30, 0x00,
  77     0x00, 0x00, 0x01, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  78     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xfc,
  79     0xfc, 0xde, 0xfc, 0xfc, 0xfc, 0xee, 0xfb, 0xfb, 0xfb, 0xee, 0xfb, 0xfb, 0xfb, 0xee, 0xfd, 0xfd,
  80     0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfc, 0xfc, 0xfc, 0xee, 0xfb, 0xfb,
  81     0xfb, 0xee, 0xfc, 0xfc, 0xfc, 0xee, 0xfb, 0xfb, 0xfb, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd,
  82     0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfb, 0xfb, 0xfb, 0xee, 0xfc, 0xfc,
  83     0xfc, 0xee, 0xfb, 0xfb, 0xfb, 0xee, 0xfb, 0xfb, 0xfb, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd,
  84     0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfc, 0xfc, 0xfc, 0xde, 0xfb, 0xfb,
  85     0xfb, 0xf4, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  86     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  87     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  88     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  89     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  90     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0xfc, 0xfc, 0xf4, 0xfd, 0xfd,
  91     0xfd, 0xee, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xfd, 0xfd,
  92     0xfd, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff,
  93     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff,
  94     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
  95     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfe, 0xfe,
  96     0xfe, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd,
  97     0xfd, 0xee, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xfc, 0xfc,
  98     0xfc, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff,
  99     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf9, 0xfb,
 100     0xfc, 0xff, 0xd7, 0xdd, 0xe1, 0xff, 0xc7, 0xc3, 0xc2, 0xff, 0xce, 0xce, 0xce, 0xff, 0xe2, 0xe4,
 101     0xe5, 0xff, 0xfd, 0xfc, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe,
 102     0xfe, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xee, 0xfb, 0xfb,
 103     0xfb, 0xee, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff,
 104     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfe, 0xfe,
 105     0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xb0, 0xad, 0xad, 0xff, 0x3a, 0x89,
 106     0xa8, 0xff, 0x03, 0xb5, 0xed, 0xff, 0x20, 0x57, 0x6c, 0xff, 0x36, 0x25, 0x1f, 0xff, 0x34, 0x52,
 107     0x5e, 0xff, 0x4f, 0x65, 0x6e, 0xff, 0x8a, 0x86, 0x84, 0xff, 0xd8, 0xd8, 0xd8, 0xff, 0xff, 0xff,
 108     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0xfc, 0xfc, 0xee, 0xfa, 0xfa,
 109     0xfa, 0xee, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff,
 110     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfc, 0xfc,
 111     0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xb7, 0xb2, 0xb1, 0xff, 0x2a, 0x1d, 0x18, 0xff, 0x33, 0x2a,
 112     0x26, 0xff, 0x25, 0x68, 0x7f, 0xff, 0x16, 0x90, 0xbe, 0xff, 0x3a, 0x38, 0x37, 0xff, 0x37, 0x38,
 113     0x38, 0xff, 0x31, 0x35, 0x37, 0xff, 0x29, 0x28, 0x27, 0xff, 0x34, 0x34, 0x34, 0xff, 0x93, 0x93,
 114     0x93, 0xff, 0xf3, 0xf3, 0xf3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfb, 0xfb, 0xfb, 0xee, 0xfd, 0xfd,
 115     0xfd, 0xee, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xfe, 0xfe,
 116     0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff,
 117     0xff, 0xff, 0xff, 0xfc, 0xf8, 0xff, 0x4f, 0xa0, 0xbf, 0xff, 0x0d, 0x8c, 0xb8, 0xff, 0x2c, 0x62,
 118     0x76, 0xff, 0x3e, 0x31, 0x2e, 0xff, 0x36, 0x46, 0x4d, 0xff, 0x38, 0x41, 0x44, 0xff, 0x3b, 0x39,
 119     0x38, 0xff, 0x37, 0x36, 0x35, 0xff, 0x2c, 0x2c, 0x2c, 0xff, 0x28, 0x28, 0x28, 0xff, 0x83, 0x83,
 120     0x83, 0xff, 0x77, 0x77, 0x77, 0xff, 0xd5, 0xd5, 0xd5, 0xff, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd,
 121     0xfd, 0xee, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xfc, 0xfc,
 122     0xfc, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfc, 0xfc, 0xfc, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff,
 123     0xff, 0xff, 0xff, 0xfd, 0xfb, 0xff, 0x5f, 0x98, 0xad, 0xff, 0x1a, 0x5c, 0x73, 0xff, 0x30, 0x5a,
 124     0x6a, 0xff, 0x38, 0x42, 0x46, 0xff, 0x3c, 0x35, 0x33, 0xff, 0x39, 0x38, 0x37, 0xff, 0x2b, 0x2b,
 125     0x2b, 0xff, 0x3c, 0x3c, 0x3c, 0xff, 0x83, 0x83, 0x83, 0xff, 0xc2, 0xc2, 0xc2, 0xff, 0xd2, 0xd2,
 126     0xd2, 0xff, 0xa9, 0xa9, 0xa9, 0xff, 0x86, 0x86, 0x86, 0xff, 0xdf, 0xdf, 0xdf, 0xee, 0xfc, 0xfc,
 127     0xfc, 0xee, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff,
 128     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff,
 129     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc3, 0xba, 0xb7, 0xff, 0x2c, 0x21, 0x1d, 0xff, 0x38, 0x30,
 130     0x2d, 0xff, 0x3c, 0x3a, 0x39, 0xff, 0x34, 0x35, 0x35, 0xff, 0x2e, 0x2e, 0x2e, 0xff, 0x78, 0x78,
 131     0x78, 0xff, 0xdf, 0xdf, 0xdf, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 132     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xeb, 0xeb, 0xeb, 0xee, 0xfa, 0xfa,
 133     0xfa, 0xee, 0xfe, 0xfe, 0xfe, 0xff, 0xfc, 0xfc, 0xfc, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff,
 134     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfc, 0xfc,
 135     0xfc, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff, 0xff, 0xff, 0xb3, 0xb0, 0xaf, 0xff, 0x3d, 0x31,
 136     0x2c, 0xff, 0x33, 0x30, 0x2f, 0xff, 0x49, 0x4a, 0x4a, 0xff, 0xcb, 0xcb, 0xcb, 0xff, 0xff, 0xff,
 137     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 138     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xee, 0xfc, 0xfc,
 139     0xfc, 0xee, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff,
 140     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 141     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xd3, 0xe2, 0xe8, 0xff, 0x1c, 0x85,
 142     0xae, 0xff, 0x2f, 0x44, 0x4c, 0xff, 0x41, 0x3c, 0x3a, 0xff, 0x9a, 0x9a, 0x9a, 0xff, 0xf9, 0xf9,
 143     0xf9, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 144     0xff, 0xff, 0xf9, 0xf9, 0xf9, 0xff, 0xf8, 0xf8, 0xf8, 0xff, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd,
 145     0xfd, 0xee, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff,
 146     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0xf8, 0xf8, 0xff, 0xf5, 0xf5,
 147     0xf5, 0xff, 0xf9, 0xf9, 0xf9, 0xff, 0xff, 0xff, 0xff, 0xff, 0x8a, 0xd0, 0xea, 0xff, 0x00, 0xb0,
 148     0xf7, 0xff, 0x36, 0x49, 0x51, 0xff, 0x39, 0x33, 0x31, 0xff, 0x1f, 0x1f, 0x1f, 0xff, 0x98, 0x98,
 149     0x98, 0xff, 0xe2, 0xe2, 0xe2, 0xff, 0x9b, 0x9b, 0x9b, 0xff, 0x71, 0x71, 0x71, 0xff, 0x72, 0x72,
 150     0x72, 0xff, 0x63, 0x63, 0x63, 0xff, 0xef, 0xef, 0xef, 0xff, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd,
 151     0xfd, 0xee, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf4, 0xf4,
 152     0xf4, 0xff, 0xae, 0xae, 0xae, 0xff, 0x8c, 0x8c, 0x8c, 0xff, 0x86, 0x86, 0x86, 0xff, 0x84, 0x84,
 153     0x84, 0xff, 0x86, 0x86, 0x86, 0xff, 0x91, 0x8a, 0x87, 0xff, 0x48, 0x7a, 0x8d, 0xff, 0x00, 0x9c,
 154     0xd7, 0xff, 0x3a, 0x3e, 0x3f, 0xff, 0x39, 0x36, 0x35, 0xff, 0x35, 0x35, 0x35, 0xff, 0x42, 0x42,
 155     0x42, 0xff, 0x3b, 0x3b, 0x3b, 0xff, 0x31, 0x31, 0x31, 0xff, 0x92, 0x92, 0x92, 0xff, 0x90, 0x90,
 156     0x90, 0xff, 0x7b, 0x7b, 0x7b, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xee, 0xfb, 0xfb,
 157     0xfb, 0xee, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xde, 0xde, 0xde, 0xff, 0x80, 0x80,
 158     0x80, 0xff, 0xb1, 0xb1, 0xb1, 0xff, 0xe6, 0xe6, 0xe6, 0xff, 0xf9, 0xf9, 0xf9, 0xff, 0xff, 0xff,
 159     0xff, 0xff, 0xea, 0xea, 0xea, 0xff, 0x81, 0x80, 0x80, 0xff, 0x49, 0x42, 0x40, 0xff, 0x55, 0x8e,
 160     0xa3, 0xff, 0x1f, 0x5b, 0x72, 0xff, 0x35, 0x3a, 0x3c, 0xff, 0x43, 0x41, 0x41, 0xff, 0x35, 0x35,
 161     0x35, 0xff, 0x2a, 0x2a, 0x2a, 0xff, 0xbe, 0xbe, 0xbe, 0xff, 0xe8, 0xe8, 0xe8, 0xff, 0x6f, 0x6f,
 162     0x6f, 0xff, 0xe7, 0xe7, 0xe7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfb, 0xfb, 0xfb, 0xee, 0xfb, 0xfb,
 163     0xfb, 0xee, 0xff, 0xff, 0xff, 0xff, 0xf5, 0xf5, 0xf5, 0xff, 0x7b, 0x7b, 0x7b, 0xff, 0xe0, 0xe0,
 164     0xe0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xf8, 0xf8, 0xf8, 0xff, 0xb8, 0xb8,
 165     0xb8, 0xff, 0x7d, 0x7d, 0x7d, 0xff, 0xa3, 0xa3, 0xa3, 0xff, 0xd2, 0xd2, 0xd2, 0xff, 0x87, 0x7c,
 166     0x77, 0xff, 0x5a, 0x57, 0x55, 0xff, 0xca, 0xcb, 0xcb, 0xff, 0x82, 0x82, 0x82, 0xff, 0x23, 0x23,
 167     0x23, 0xff, 0x38, 0x38, 0x38, 0xff, 0x43, 0x43, 0x43, 0xff, 0x5d, 0x5d, 0x5d, 0xff, 0xd9, 0xd9,
 168     0xd9, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0xfc, 0xfc, 0xee, 0xfd, 0xfd,
 169     0xfd, 0xee, 0xff, 0xff, 0xff, 0xff, 0xa1, 0xa1, 0xa1, 0xff, 0xb6, 0xb6, 0xb6, 0xff, 0xff, 0xff,
 170     0xff, 0xff, 0xfb, 0xfb, 0xfb, 0xff, 0xdb, 0xdb, 0xdb, 0xff, 0xb1, 0xb1, 0xb1, 0xff, 0xc7, 0xc7,
 171     0xc7, 0xff, 0xea, 0xea, 0xea, 0xff, 0xa6, 0xa6, 0xa6, 0xff, 0x60, 0x60, 0x60, 0xff, 0x9f, 0x9f,
 172     0x9f, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff, 0xff, 0xff, 0xd1, 0xd1, 0xd1, 0xff, 0x4e, 0x4e,
 173     0x4e, 0xff, 0x29, 0x29, 0x29, 0xff, 0x73, 0x73, 0x73, 0xff, 0xeb, 0xeb, 0xeb, 0xff, 0xff, 0xff,
 174     0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd,
 175     0xfd, 0xee, 0xec, 0xec, 0xec, 0xff, 0x90, 0x90, 0x90, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe,
 176     0xfe, 0xff, 0xf3, 0xf3, 0xf3, 0xff, 0xf0, 0xf0, 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xb7, 0xb7,
 177     0xb7, 0xff, 0x61, 0x61, 0x61, 0xff, 0x89, 0x89, 0x89, 0xff, 0xeb, 0xeb, 0xeb, 0xff, 0xff, 0xff,
 178     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0xfc, 0xfc, 0xff, 0xdc, 0xdc, 0xdc, 0xff, 0x99, 0x99,
 179     0x99, 0xff, 0xbc, 0xbc, 0xbc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe,
 180     0xfe, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd,
 181     0xfd, 0xee, 0x98, 0x98, 0x98, 0xff, 0x9c, 0x9c, 0x9c, 0xff, 0xf9, 0xf9, 0xf9, 0xff, 0xff, 0xff,
 182     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xc5, 0xc5, 0xc5, 0xff, 0x66, 0x66, 0x66, 0xff, 0x76, 0x76,
 183     0x76, 0xff, 0xdb, 0xdb, 0xdb, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 184     0xff, 0xff, 0xfb, 0xfb, 0xfb, 0xff, 0xdd, 0xdd, 0xdd, 0xff, 0xcd, 0xcd, 0xcd, 0xff, 0xf7, 0xf7,
 185     0xf7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 186     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0xfc, 0xfc, 0xee, 0xda, 0xda,
 187     0xda, 0xee, 0x48, 0x48, 0x48, 0xff, 0x75, 0x75, 0x75, 0xff, 0xff, 0xff, 0xff, 0xff, 0xd5, 0xd5,
 188     0xd5, 0xff, 0x72, 0x72, 0x72, 0xff, 0x6a, 0x6a, 0x6a, 0xff, 0xc8, 0xc8, 0xc8, 0xff, 0xff, 0xff,
 189     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfc, 0xfc, 0xfc, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff,
 190     0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 191     0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 192     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfb, 0xfb, 0xfb, 0xee, 0xeb, 0xeb,
 193     0xeb, 0xee, 0xaf, 0xaf, 0xaf, 0xff, 0xb0, 0xb0, 0xb0, 0xff, 0x8b, 0x8b, 0x8b, 0xff, 0x60, 0x60,
 194     0x60, 0xff, 0xb3, 0xb3, 0xb3, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 195     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfe, 0xfe,
 196     0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff,
 197     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff,
 198     0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd,
 199     0xfd, 0xee, 0x66, 0x66, 0x66, 0xff, 0x54, 0x54, 0x54, 0xff, 0xa0, 0xa0, 0xa0, 0xff, 0xfa, 0xfa,
 200     0xfa, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff,
 201     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfd, 0xfd,
 202     0xfd, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xfc, 0xfc, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 203     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xfc, 0xfc, 0xfc, 0xff, 0xfd, 0xfd,
 204     0xfd, 0xff, 0xfc, 0xfc, 0xfc, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xee, 0xce, 0xce,
 205     0xce, 0xee, 0x98, 0x98, 0x98, 0xff, 0xef, 0xef, 0xef, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 206     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff,
 207     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff,
 208     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff,
 209     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 210     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfd, 0xfd, 0xfd, 0xee, 0xf6, 0xf6,
 211     0xf6, 0xf4, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 212     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 213     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 214     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 215     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 216     0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfb, 0xfb, 0xfb, 0xf4, 0xfd, 0xfd,
 217     0xfd, 0xde, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfc, 0xfc, 0xfc, 0xee, 0xfd, 0xfd,
 218     0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfc, 0xfc, 0xfc, 0xee, 0xfd, 0xfd,
 219     0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfc, 0xfc, 0xfc, 0xee, 0xfd, 0xfd,
 220     0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfc, 0xfc, 0xfc, 0xee, 0xfc, 0xfc, 0xfc, 0xee, 0xfd, 0xfd,
 221     0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfb, 0xfb, 0xfb, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd,
 222     0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xee, 0xfd, 0xfd, 0xfd, 0xde,
 223 };
 224
 225 #define ICON_SIZE    (sizeof(icon_file))
 226 #define EMFAT_INCR_ICON 1
 227 #else
 228 #define EMFAT_INCR_ICON 0
 229 #endif
 230
 231 #define CMA_TIME EMFAT_ENCODE_CMA_TIME(1,1,2018, 13,0,0)
 232 #define CMA { CMA_TIME, CMA_TIME, CMA_TIME }
 233
 234 static void memory_read_proc(uint8_t *dest, int size, uint32_t offset, emfat_entry_t *entry)
 235 {
 236     int len;
 237
 238     if (offset > entry->curr_size) {
 239         return;
 240     }
 241
 242     if (offset + size > entry->curr_size) {
 243         len = entry->curr_size - offset;
 244     } else {
 245         len = size;
 246     }
 247
 248     memcpy(dest, &((char *)entry->user_data)[offset], len);
 249 }
 250
 251 static void bblog_read_proc(uint8_t *dest, int size, uint32_t offset, emfat_entry_t *entry)
 252 {
 253     UNUSED(entry);
 254
 255     flashfsReadAbs(offset, dest, size);
 256 }
 257
 258 static const emfat_entry_t entriesPredefined[] =
 259 {
 260     // name           dir    attr         lvl offset  size             max_size        user                time  read               write
 261     { "",             true,  0,           0,  0,      0,               0,              0,                  CMA,  NULL,              NULL, { 0 } },
 262 #ifdef USE_EMFAT_AUTORUN
 263     { "autorun.inf",  false, ATTR_HIDDEN, 1,  0,      AUTORUN_SIZE,    AUTORUN_SIZE,   (long)autorun_file, CMA,  memory_read_proc,  NULL, { 0 } },
 264 #endif
 265 #ifdef USE_EMFAT_ICON
 266     { "icon.ico",     false, ATTR_HIDDEN, 1,  0,      ICON_SIZE,       ICON_SIZE,      (long)icon_file,    CMA,  memory_read_proc,  NULL, { 0 } },
 267 #endif
 268 #ifdef USE_EMFAT_README
 269     { "readme.txt",   false, 0,           1,  0,      README_SIZE,     1024*1024,      (long)readme_file,  CMA,  memory_read_proc,  NULL, { 0 } },
 270 #endif
 271     { FC_FIRMWARE_IDENTIFIER "_ALL.BBL", 0,     0,           1,  0,      0,               0,              0,                  CMA,  bblog_read_proc,   NULL, { 0 } },
 272     { "PADDING.TXT",  0,     ATTR_HIDDEN, 1,  0,      0,               0,              0,                  CMA,  NULL,              NULL, { 0 } },
 273 };
 274
 275 #define PREDEFINED_ENTRY_COUNT (1 + EMFAT_INCR_AUTORUN + EMFAT_INCR_ICON + EMFAT_INCR_README)
 276 #define APPENDED_ENTRY_COUNT 2
 277
 278 #define EMFAT_MAX_LOG_ENTRY 100
 279 #define EMFAT_MAX_ENTRY (PREDEFINED_ENTRY_COUNT + EMFAT_MAX_LOG_ENTRY + APPENDED_ENTRY_COUNT)
 280
 281 static emfat_entry_t entries[EMFAT_MAX_ENTRY];
 282
 283 emfat_t emfat;
 284 static uint32_t cmaTime = CMA_TIME;
 285
 286 static void emfat_set_entry_cma(emfat_entry_t *entry)
 287 {
 288     // Set file creation/modification/access times to be the same, either the default date or that from the RTC
 289     // In practise this will be when the filesystem is mounted as the date is passed from the host over USB
 290     entry->cma_time[0] = cmaTime;
 291     entry->cma_time[1] = cmaTime;
 292     entry->cma_time[2] = cmaTime;
 293 }
 294
 295 #ifdef USE_FLASHFS
 296 static void emfat_add_log(emfat_entry_t *entry, int number, uint32_t offset, uint32_t size)
 297 {
 298     static char logNames[EMFAT_MAX_LOG_ENTRY][8+1+3];
 299
 300     tfp_sprintf(logNames[number], FC_FIRMWARE_IDENTIFIER "_%03d.BBL", number + 1);
 301     entry->name = logNames[number];
 302     entry->level = 1;
 303     entry->offset = offset;
 304     entry->curr_size = size;
 305     entry->max_size = entry->curr_size;
 306     entry->readcb = bblog_read_proc;
 307     // Set file modification/access times to be the same as the creation time
 308     entry->cma_time[1] = entry->cma_time[0];
 309     entry->cma_time[2] = entry->cma_time[0];
 310 }
 311
 312 static int emfat_find_log(emfat_entry_t *entry, int maxCount, int flashfsUsedSpace)
 313 {
 314     int lastOffset = 0;
 315     int currOffset = 0;
 316     int buffOffset;
 317     int hdrOffset;
 318     int fileNumber = 0;
 319     uint8_t buffer[HDR_BUF_SIZE];
 320     int logCount = 0;
 321     char *logHeader = "H Product:Blackbox";
 322     int lenLogHeader = strlen(logHeader);
 323     char *timeHeader = "H Log start datetime:";
 324     int lenTimeHeader = strlen(timeHeader);
 325     int timeHeaderMatched = 0;
 326
 327     for ( ; currOffset < flashfsUsedSpace ; currOffset += 2048) { // XXX 2048 = FREE_BLOCK_SIZE in io/flashfs.c
 328
 329         mscSetActive();
 330         mscActivityLed();
 331
 332         flashfsReadAbs(currOffset, buffer, HDR_BUF_SIZE);
 333
 334         if (strncmp((char *)buffer, logHeader, lenLogHeader)) {
 335             continue;
 336         }
 337
 338         // The length of the previous record is now known
 339         if (lastOffset != currOffset) {
 340             // Record the previous entry
 341             emfat_add_log(entry++, fileNumber++, lastOffset, currOffset - lastOffset);
 342
 343             logCount++;
 344         }
 345
 346         // Find the "Log start datetime" entry, example encoding "H Log start datetime:2019-08-15T13:18:22.199+00:00"
 347
 348         buffOffset = lenLogHeader;
 349         hdrOffset = currOffset;
 350
 351         // Set the default timestamp for this log entry in case the timestamp is not found
 352         entry->cma_time[0] = cmaTime;
 353
 354         // Search for the timestamp record
 355         while (true) {
 356             if (buffer[buffOffset++] == timeHeader[timeHeaderMatched]) {
 357                 // This matches the header we're looking for so far
 358                 if (++timeHeaderMatched == lenTimeHeader) {
 359                     // Complete match so read date/time into buffer
 360                     flashfsReadAbs(hdrOffset + buffOffset, buffer, HDR_BUF_SIZE);
 361
 362                     // Extract the time values to create the CMA time
 363                     char *nextToken = (char *)buffer;
 364                     int year = strtoul(nextToken, &nextToken, 10);
 365                     int month = strtoul(++nextToken, &nextToken, 10);
 366                     int day = strtoul(++nextToken, &nextToken, 10);
 367                     int hour = strtoul(++nextToken, &nextToken, 10);
 368                     int min = strtoul(++nextToken, &nextToken, 10);
 369                     int sec = strtoul(++nextToken, NULL, 10);
 370
 371                     // Set the file creation time
 372                     if (year) {
 373                         entry->cma_time[0] = EMFAT_ENCODE_CMA_TIME(day, month, year, hour, min, sec);
 374                     }
 375
 376                     break;
 377                 }
 378             } else {
 379                 timeHeaderMatched = 0;
 380             }
 381
 382             if (buffOffset == HDR_BUF_SIZE) {
 383                 // Read the next portion of the header
 384                 hdrOffset += HDR_BUF_SIZE;
 385
 386                 // Check for flash overflow
 387                 if (hdrOffset > flashfsUsedSpace) {
 388                     break;
 389                 }
 390
 391                 flashfsReadAbs(hdrOffset, buffer, HDR_BUF_SIZE);
 392                 buffOffset = 0;
 393             }
 394         }
 395
 396         if (fileNumber == maxCount) {
 397             break;
 398         }
 399
 400         lastOffset = currOffset;
 401     }
 402
 403     // Now add the final entry
 404     if (fileNumber != maxCount && lastOffset != currOffset) {
 405         emfat_add_log(entry, fileNumber, lastOffset, currOffset - lastOffset);
 406         ++logCount;
 407     }
 408
 409     return logCount;
 410 }
 411 #endif  // USE_FLASHFS
 412
 413 void emfat_init_files(void)
 414 {
 415     int flashfsUsedSpace = 0;
 416     int entryIndex = PREDEFINED_ENTRY_COUNT;
 417     emfat_entry_t *entry;
 418     memset(entries, 0, sizeof(entries));
 419
 420 #ifdef USE_PERSISTENT_MSC_RTC
 421     rtcTime_t mscRebootRtc;
 422     if (rtcPersistRead(&mscRebootRtc)) {
 423         const int32_t rtcSeconds = rtcTimeGetSeconds(&mscRebootRtc);
 424         cmaTime = emfat_cma_time_from_unix((uint32_t)rtcSeconds);
 425     }
 426 #endif
 427
 428     // create the predefined entries
 429     for (size_t i = 0 ; i < PREDEFINED_ENTRY_COUNT ; i++) {
 430         entries[i] = entriesPredefined[i];
 431         // These entries have timestamps corresponding to when the filesystem is mounted
 432         emfat_set_entry_cma(&entries[i]);
 433     }
 434
 435 #ifdef USE_FLASHFS
 436     flashInit(flashConfig());
 437     flashfsInit();
 438     LED0_OFF;
 439
 440     flashfsUsedSpace = flashfsIdentifyStartOfFreeSpace();
 441
 442     // Detect and create entries for each individual log
 443     const int logCount = emfat_find_log(&entries[PREDEFINED_ENTRY_COUNT], EMFAT_MAX_LOG_ENTRY, flashfsUsedSpace);
 444
 445     entryIndex += logCount;
 446
 447     if (logCount > 0) {
 448         // Create the all logs entry that represents all used flash space to
 449         // allow downloading the entire log in one file
 450         entries[entryIndex] = entriesPredefined[PREDEFINED_ENTRY_COUNT];
 451         entry = &entries[entryIndex];
 452         entry->curr_size = flashfsUsedSpace;
 453         entry->max_size = entry->curr_size;
 454         // This entry has timestamps corresponding to when the filesystem is mounted
 455         emfat_set_entry_cma(entry);
 456         ++entryIndex;
 457     }
 458 #endif // USE_FLASHFS
 459
 460     // Padding file to fill out the filesystem size to FILESYSTEM_SIZE_MB
 461     if (flashfsUsedSpace * 2 < FILESYSTEM_SIZE_MB * 1024 * 1024) {
 462         entries[entryIndex] = entriesPredefined[PREDEFINED_ENTRY_COUNT + 1];
 463         entry = &entries[entryIndex];
 464         // used space is doubled because of the individual files plus the single complete file
 465         entry->curr_size = (FILESYSTEM_SIZE_MB * 1024 * 1024) - (flashfsUsedSpace * 2);
 466         entry->max_size = entry->curr_size;
 467         // This entry has timestamps corresponding to when the filesystem is mounted
 468         emfat_set_entry_cma(entry);
 469     }
 470
 471     emfat_init(&emfat, "BETAFLT", entries);
 472     LED0_OFF;
 473 }