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|
/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020 Jeff Epler for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "py/obj.h"
#include "py/objproperty.h"
#include "py/runtime.h"
#include "py/objarray.h"
#include "shared-bindings/sdcardio/SDCard.h"
#include "shared-module/sdcardio/SDCard.h"
#include "common-hal/busio/SPI.h"
#include "shared-bindings/busio/SPI.h"
#include "shared-bindings/microcontroller/Pin.h"
#include "supervisor/flash.h"
//| class SDCard:
//| """SD Card Block Interface
//|
//| Controls an SD card over SPI. This built-in module has higher read
//| performance than the library adafruit_sdcard, but it is only compatible with
//| `busio.SPI`, not `bitbangio.SPI`. Usually an SDCard object is used
//| with ``storage.VfsFat`` to allow file I/O to an SD card."""
//|
//| def __init__(self, bus: busio.SPI, cs: microcontroller.Pin, baudrate: int = 8000000) -> None:
//| """Construct an SPI SD Card object with the given properties
//|
//| :param busio.SPI spi: The SPI bus
//| :param microcontroller.Pin cs: The chip select connected to the card
//| :param int baudrate: The SPI data rate to use after card setup
//|
//| Note that during detection and configuration, a hard-coded low baudrate is used.
//| Data transfers use the specified baurate (rounded down to one that is supported by
//| the microcontroller)
//|
//| .. important::
//| If the same SPI bus is shared with other peripherals, it is important that
//| the SD card be initialized before accessing any other peripheral on the bus.
//| Failure to do so can prevent the SD card from being recognized until it is
//| powered off or re-inserted.
//|
//| Example usage:
//|
//| .. code-block:: python
//|
//| import os
//|
//| import board
//| import sdcardio
//| import storage
//|
//| sd = sdcardio.SDCard(board.SPI(), board.SD_CS)
//| vfs = storage.VfsFat(sd)
//| storage.mount(vfs, '/sd')
//| os.listdir('/sd')"""
STATIC mp_obj_t sdcardio_sdcard_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
enum { ARG_spi, ARG_cs, ARG_baudrate, NUM_ARGS };
static const mp_arg_t allowed_args[] = {
{ MP_QSTR_spi, MP_ARG_OBJ, {.u_obj = mp_const_none } },
{ MP_QSTR_cs, MP_ARG_OBJ, {.u_obj = mp_const_none } },
{ MP_QSTR_baudrate, MP_ARG_INT, {.u_int = 8000000} },
};
MP_STATIC_ASSERT(MP_ARRAY_SIZE(allowed_args) == NUM_ARGS);
mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
busio_spi_obj_t *spi = validate_obj_is_spi_bus(args[ARG_spi].u_obj);
const mcu_pin_obj_t *cs = validate_obj_is_free_pin(args[ARG_cs].u_obj);
sdcardio_sdcard_obj_t *self = m_new_obj(sdcardio_sdcard_obj_t);
self->base.type = &sdcardio_SDCard_type;
common_hal_sdcardio_sdcard_construct(self, spi, cs, args[ARG_baudrate].u_int);
return self;
}
//| def count(self) -> int:
//| """Returns the total number of sectors
//|
//| Due to technical limitations, this is a function and not a property.
//|
//| :return: The number of 512-byte blocks, as a number"""
//|
STATIC mp_obj_t sdcardio_sdcard_count(mp_obj_t self_in) {
sdcardio_sdcard_obj_t *self = (sdcardio_sdcard_obj_t *)self_in;
return mp_obj_new_int_from_ull(common_hal_sdcardio_sdcard_get_blockcount(self));
}
MP_DEFINE_CONST_FUN_OBJ_1(sdcardio_sdcard_count_obj, sdcardio_sdcard_count);
//| def deinit(self) -> None:
//| """Disable permanently.
//|
//| :return: None"""
//|
STATIC mp_obj_t sdcardio_sdcard_deinit(mp_obj_t self_in) {
sdcardio_sdcard_obj_t *self = (sdcardio_sdcard_obj_t *)self_in;
common_hal_sdcardio_sdcard_deinit(self);
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(sdcardio_sdcard_deinit_obj, sdcardio_sdcard_deinit);
//| def readblocks(self, start_block: int, buf: WriteableBuffer) -> None:
//|
//| """Read one or more blocks from the card
//|
//| :param int start_block: The block to start reading from
//| :param ~circuitpython_typing.WriteableBuffer buf: The buffer to write into. Length must be multiple of 512.
//|
//| :return: None"""
//|
STATIC mp_obj_t sdcardio_sdcard_readblocks(mp_obj_t self_in, mp_obj_t start_block_in, mp_obj_t buf_in) {
uint32_t start_block = mp_obj_get_int(start_block_in);
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(buf_in, &bufinfo, MP_BUFFER_WRITE);
sdcardio_sdcard_obj_t *self = (sdcardio_sdcard_obj_t *)self_in;
int result = common_hal_sdcardio_sdcard_readblocks(self, start_block, &bufinfo);
if (result < 0) {
mp_raise_OSError(-result);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_3(sdcardio_sdcard_readblocks_obj, sdcardio_sdcard_readblocks);
//| def sync(self) -> None:
//| """Ensure all blocks written are actually committed to the SD card
//|
//| :return: None"""
//| ...
STATIC mp_obj_t sdcardio_sdcard_sync(mp_obj_t self_in) {
sdcardio_sdcard_obj_t *self = (sdcardio_sdcard_obj_t *)self_in;
int result = common_hal_sdcardio_sdcard_sync(self);
if (result < 0) {
mp_raise_OSError(-result);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_1(sdcardio_sdcard_sync_obj, sdcardio_sdcard_sync);
//| def writeblocks(self, start_block: int, buf: ReadableBuffer) -> None:
//|
//| """Write one or more blocks to the card
//|
//| :param int start_block: The block to start writing from
//| :param ~circuitpython_typing.ReadableBuffer buf: The buffer to read from. Length must be multiple of 512.
//|
//| :return: None"""
//|
STATIC mp_obj_t sdcardio_sdcard_writeblocks(mp_obj_t self_in, mp_obj_t start_block_in, mp_obj_t buf_in) {
uint32_t start_block = mp_obj_get_int(start_block_in);
mp_buffer_info_t bufinfo;
mp_get_buffer_raise(buf_in, &bufinfo, MP_BUFFER_READ);
sdcardio_sdcard_obj_t *self = (sdcardio_sdcard_obj_t *)self_in;
int result = common_hal_sdcardio_sdcard_writeblocks(self, start_block, &bufinfo);
if (result < 0) {
mp_raise_OSError(-result);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_3(sdcardio_sdcard_writeblocks_obj, sdcardio_sdcard_writeblocks);
STATIC const mp_rom_map_elem_t sdcardio_sdcard_locals_dict_table[] = {
{ MP_ROM_QSTR(MP_QSTR_count), MP_ROM_PTR(&sdcardio_sdcard_count_obj) },
{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&sdcardio_sdcard_deinit_obj) },
{ MP_ROM_QSTR(MP_QSTR_readblocks), MP_ROM_PTR(&sdcardio_sdcard_readblocks_obj) },
{ MP_ROM_QSTR(MP_QSTR_sync), MP_ROM_PTR(&sdcardio_sdcard_sync_obj) },
{ MP_ROM_QSTR(MP_QSTR_writeblocks), MP_ROM_PTR(&sdcardio_sdcard_writeblocks_obj) },
};
STATIC MP_DEFINE_CONST_DICT(sdcardio_sdcard_locals_dict, sdcardio_sdcard_locals_dict_table);
const mp_obj_type_t sdcardio_SDCard_type = {
{ &mp_type_type },
.name = MP_QSTR_SDCard,
.make_new = sdcardio_sdcard_make_new,
.locals_dict = (mp_obj_dict_t *)&sdcardio_sdcard_locals_dict,
};
|
