src/main/config/config_streamer_stm32f4.c

   1 /*
   2  * This file is part of Cleanflight.
   3  *
   4  * Cleanflight is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * Cleanflight is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include <string.h>
  19 #include "platform.h"
  20 #include "drivers/system.h"
  21 #include "config/config_streamer.h"
  22
  23 #if defined(STM32F4) && !defined(CONFIG_IN_RAM) && !defined(CONFIG_IN_EXTERNAL_FLASH)
  24
  25 /*
  26 Sector 0    0x08000000 - 0x08003FFF 16 Kbytes
  27 Sector 1    0x08004000 - 0x08007FFF 16 Kbytes
  28 Sector 2    0x08008000 - 0x0800BFFF 16 Kbytes
  29 Sector 3    0x0800C000 - 0x0800FFFF 16 Kbytes
  30 Sector 4    0x08010000 - 0x0801FFFF 64 Kbytes
  31 Sector 5    0x08020000 - 0x0803FFFF 128 Kbytes
  32 Sector 6    0x08040000 - 0x0805FFFF 128 Kbytes
  33 Sector 7    0x08060000 - 0x0807FFFF 128 Kbytes
  34 Sector 8    0x08080000 - 0x0809FFFF 128 Kbytes
  35 Sector 9    0x080A0000 - 0x080BFFFF 128 Kbytes
  36 Sector 10   0x080C0000 - 0x080DFFFF 128 Kbytes
  37 Sector 11   0x080E0000 - 0x080FFFFF 128 Kbytes
  38 */
  39 #define FLASH_PAGE_SIZE     ((uint32_t)0x4000)
  40 static uint32_t getFLASHSectorForEEPROM(uint32_t address)
  41 {
  42     if (address <= 0x08003FFF)
  43         return FLASH_Sector_0;
  44     if (address <= 0x08007FFF)
  45         return FLASH_Sector_1;
  46     if (address <= 0x0800BFFF)
  47         return FLASH_Sector_2;
  48     if (address <= 0x0800FFFF)
  49         return FLASH_Sector_3;
  50     if (address <= 0x0801FFFF)
  51         return FLASH_Sector_4;
  52     if (address <= 0x0803FFFF)
  53         return FLASH_Sector_5;
  54     if (address <= 0x0805FFFF)
  55         return FLASH_Sector_6;
  56     if (address <= 0x0807FFFF)
  57         return FLASH_Sector_7;
  58     if (address <= 0x0809FFFF)
  59         return FLASH_Sector_8;
  60     if (address <= 0x080DFFFF)
  61         return FLASH_Sector_9;
  62     if (address <= 0x080BFFFF)
  63         return FLASH_Sector_10;
  64     if (address <= 0x080FFFFF)
  65         return FLASH_Sector_11;
  66
  67     // Not good
  68     while (1) {
  69         failureMode(FAILURE_FLASH_WRITE_FAILED);
  70     }
  71 }
  72
  73 void config_streamer_impl_unlock(void)
  74 {
  75     FLASH_Unlock();
  76     FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR | FLASH_FLAG_PGSERR);
  77 }
  78
  79 void config_streamer_impl_lock(void)
  80 {
  81     FLASH_Lock();
  82 }
  83
  84 int config_streamer_impl_write_word(config_streamer_t *c, config_streamer_buffer_align_type_t *buffer)
  85 {
  86     if (c->err != 0) {
  87         return c->err;
  88     }
  89
  90     if (c->address % FLASH_PAGE_SIZE == 0) {
  91         const FLASH_Status status = FLASH_EraseSector(getFLASHSectorForEEPROM(c->address), VoltageRange_3);
  92         if (status != FLASH_COMPLETE) {
  93             return -1;
  94         }
  95     }
  96
  97     const FLASH_Status status = FLASH_ProgramWord(c->address, *buffer);
  98     if (status != FLASH_COMPLETE) {
  99         return -2;
 100     }
 101
 102     c->address += CONFIG_STREAMER_BUFFER_SIZE;
 103     return 0;
 104 }
 105
 106 #endif