108 lines
4.8 KiB
C
108 lines
4.8 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013-2017 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/runtime.h"
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#include "lib/oofatfs/ff.h"
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#include "lib/oofatfs/diskio.h"
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#include "extmod/vfs_fat.h"
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#include "fatfs/src/drivers/sflash_diskio.h"
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#include "mods/pybflash.h"
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/******************************************************************************/
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// MicroPython bindings to expose the internal flash as an object with the
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// block protocol.
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// there is a singleton Flash object
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STATIC const mp_obj_base_t pyb_flash_obj = {&pyb_flash_type};
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STATIC mp_obj_t pyb_flash_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
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// check arguments
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mp_arg_check_num(n_args, n_kw, 0, 0, false);
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// return singleton object
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return (mp_obj_t)&pyb_flash_obj;
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}
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STATIC mp_obj_t pyb_flash_readblocks(mp_obj_t self, mp_obj_t block_num, mp_obj_t buf) {
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mp_buffer_info_t bufinfo;
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mp_get_buffer_raise(buf, &bufinfo, MP_BUFFER_WRITE);
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DRESULT res = sflash_disk_read(bufinfo.buf, mp_obj_get_int(block_num), bufinfo.len / SFLASH_SECTOR_SIZE);
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return MP_OBJ_NEW_SMALL_INT(res != RES_OK); // return of 0 means success
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_3(pyb_flash_readblocks_obj, pyb_flash_readblocks);
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STATIC mp_obj_t pyb_flash_writeblocks(mp_obj_t self, mp_obj_t block_num, mp_obj_t buf) {
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mp_buffer_info_t bufinfo;
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mp_get_buffer_raise(buf, &bufinfo, MP_BUFFER_READ);
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DRESULT res = sflash_disk_write(bufinfo.buf, mp_obj_get_int(block_num), bufinfo.len / SFLASH_SECTOR_SIZE);
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return MP_OBJ_NEW_SMALL_INT(res != RES_OK); // return of 0 means success
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_3(pyb_flash_writeblocks_obj, pyb_flash_writeblocks);
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STATIC mp_obj_t pyb_flash_ioctl(mp_obj_t self, mp_obj_t cmd_in, mp_obj_t arg_in) {
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mp_int_t cmd = mp_obj_get_int(cmd_in);
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switch (cmd) {
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case MP_BLOCKDEV_IOCTL_INIT: return MP_OBJ_NEW_SMALL_INT(sflash_disk_init() != RES_OK);
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case MP_BLOCKDEV_IOCTL_DEINIT: sflash_disk_flush(); return MP_OBJ_NEW_SMALL_INT(0);
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case MP_BLOCKDEV_IOCTL_SYNC: sflash_disk_flush(); return MP_OBJ_NEW_SMALL_INT(0);
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case MP_BLOCKDEV_IOCTL_BLOCK_COUNT: return MP_OBJ_NEW_SMALL_INT(SFLASH_SECTOR_COUNT);
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case MP_BLOCKDEV_IOCTL_BLOCK_SIZE: return MP_OBJ_NEW_SMALL_INT(SFLASH_SECTOR_SIZE);
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default: return mp_const_none;
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}
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_3(pyb_flash_ioctl_obj, pyb_flash_ioctl);
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STATIC const mp_rom_map_elem_t pyb_flash_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_readblocks), MP_ROM_PTR(&pyb_flash_readblocks_obj) },
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{ MP_ROM_QSTR(MP_QSTR_writeblocks), MP_ROM_PTR(&pyb_flash_writeblocks_obj) },
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{ MP_ROM_QSTR(MP_QSTR_ioctl), MP_ROM_PTR(&pyb_flash_ioctl_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(pyb_flash_locals_dict, pyb_flash_locals_dict_table);
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MP_DEFINE_CONST_OBJ_TYPE(
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pyb_flash_type,
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MP_QSTR_Flash,
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MP_TYPE_FLAG_NONE,
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make_new, pyb_flash_make_new,
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locals_dict, &pyb_flash_locals_dict
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);
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void pyb_flash_init_vfs(fs_user_mount_t *vfs) {
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vfs->base.type = &mp_fat_vfs_type;
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vfs->blockdev.flags |= MP_BLOCKDEV_FLAG_NATIVE | MP_BLOCKDEV_FLAG_HAVE_IOCTL;
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vfs->fatfs.drv = vfs;
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vfs->blockdev.readblocks[0] = (mp_obj_t)&pyb_flash_readblocks_obj;
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vfs->blockdev.readblocks[1] = (mp_obj_t)&pyb_flash_obj;
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vfs->blockdev.readblocks[2] = (mp_obj_t)sflash_disk_read; // native version
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vfs->blockdev.writeblocks[0] = (mp_obj_t)&pyb_flash_writeblocks_obj;
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vfs->blockdev.writeblocks[1] = (mp_obj_t)&pyb_flash_obj;
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vfs->blockdev.writeblocks[2] = (mp_obj_t)sflash_disk_write; // native version
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vfs->blockdev.u.ioctl[0] = (mp_obj_t)&pyb_flash_ioctl_obj;
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vfs->blockdev.u.ioctl[1] = (mp_obj_t)&pyb_flash_obj;
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}
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