/* * This file is part of the Micro Python project, http://micropython.org/ * * The MIT License (MIT) * * Copyright (c) 2017 Scott Shawcroft 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/binary.h" #include "py/objproperty.h" #include "py/runtime.h" #include "py/runtime0.h" #include "shared-bindings/nvm/ByteArray.h" #include "supervisor/shared/translate.h" //| class ByteArray: //| r"""Presents a stretch of non-volatile memory as a bytearray. //| //| Non-volatile memory is available as a byte array that persists over reloads //| and power cycles. Each assignment causes an erase and write cycle so its recommended to assign //| all values to change at once. //| //| Usage:: //| //| import microcontroller //| microcontroller.nvm[0:3] = b"\xcc\x10\x00" //| """ //| //| def __init__(self) -> None: //| """Not currently dynamically supported. Access the sole instance through `microcontroller.nvm`.""" //| ... //| //| def __bool__(self) -> bool: //| ... //| //| def __len__(self) -> int: //| """Return the length. This is used by (`len`)""" //| ... //| STATIC mp_obj_t nvm_bytearray_unary_op(mp_unary_op_t op, mp_obj_t self_in) { nvm_bytearray_obj_t *self = MP_OBJ_TO_PTR(self_in); uint16_t len = common_hal_nvm_bytearray_get_length(self); switch (op) { case MP_UNARY_OP_BOOL: return mp_obj_new_bool(len != 0); case MP_UNARY_OP_LEN: return MP_OBJ_NEW_SMALL_INT(len); default: return MP_OBJ_NULL; // op not supported } } STATIC const mp_rom_map_elem_t nvm_bytearray_locals_dict_table[] = { }; STATIC MP_DEFINE_CONST_DICT(nvm_bytearray_locals_dict, nvm_bytearray_locals_dict_table); //| @overload //| def __getitem__(self, index: slice) -> bytearray: ... //| @overload //| def __getitem__(self, index: int) -> int: //| """Returns the value at the given index.""" //| ... //| //| @overload //| def __setitem__(self, index: slice, value: ReadableBuffer) -> None: ... //| @overload //| def __setitem__(self, index: int, value: int) -> None: //| """Set the value at the given index.""" //| ... //| STATIC mp_obj_t nvm_bytearray_subscr(mp_obj_t self_in, mp_obj_t index_in, mp_obj_t value) { if (value == MP_OBJ_NULL) { // delete item // slice deletion return MP_OBJ_NULL; // op not supported } else { nvm_bytearray_obj_t *self = MP_OBJ_TO_PTR(self_in); if (0) { #if MICROPY_PY_BUILTINS_SLICE } else if (mp_obj_is_type(index_in, &mp_type_slice)) { mp_bound_slice_t slice; if (!mp_seq_get_fast_slice_indexes(common_hal_nvm_bytearray_get_length(self), index_in, &slice)) { mp_raise_NotImplementedError(translate("only slices with step=1 (aka None) are supported")); } if (value != MP_OBJ_SENTINEL) { #if MICROPY_PY_ARRAY_SLICE_ASSIGN // Assign size_t src_len = slice.stop - slice.start; uint8_t *src_items; if (mp_obj_is_type(value, &mp_type_array) || mp_obj_is_type(value, &mp_type_bytearray) || mp_obj_is_type(value, &mp_type_memoryview) || mp_obj_is_type(value, &mp_type_bytes)) { mp_buffer_info_t bufinfo; mp_get_buffer_raise(value, &bufinfo, MP_BUFFER_READ); if (bufinfo.len != src_len) { mp_raise_ValueError(translate("Slice and value different lengths.")); } src_len = bufinfo.len; src_items = bufinfo.buf; if (1 != mp_binary_get_size('@', bufinfo.typecode, NULL)) { mp_raise_ValueError(translate("Array values should be single bytes.")); } } else { mp_raise_NotImplementedError(translate("array/bytes required on right side")); } if (!common_hal_nvm_bytearray_set_bytes(self, slice.start, src_items, src_len)) { mp_raise_RuntimeError(translate("Unable to write to nvm.")); } return mp_const_none; #else return MP_OBJ_NULL; // op not supported #endif } else { // Read slice. size_t len = slice.stop - slice.start; uint8_t *items = m_new(uint8_t, len); common_hal_nvm_bytearray_get_bytes(self, slice.start, len, items); return mp_obj_new_bytearray_by_ref(len, items); } #endif } else { // Single index rather than slice. size_t index = mp_get_index(self->base.type, common_hal_nvm_bytearray_get_length(self), index_in, false); if (value == MP_OBJ_SENTINEL) { // load uint8_t value_out; common_hal_nvm_bytearray_get_bytes(self, index, 1, &value_out); return MP_OBJ_NEW_SMALL_INT(value_out); } else { // store mp_int_t byte_value = mp_obj_get_int(value); if (byte_value > 0xff || byte_value < 0) { mp_raise_ValueError(translate("Bytes must be between 0 and 255.")); } uint8_t short_value = byte_value; if (!common_hal_nvm_bytearray_set_bytes(self, index, &short_value, 1)) { mp_raise_RuntimeError(translate("Unable to write to nvm.")); } return mp_const_none; } } } } const mp_obj_type_t nvm_bytearray_type = { { &mp_type_type }, .flags = MP_TYPE_FLAG_FULL, .name = MP_QSTR_ByteArray, .subscr = nvm_bytearray_subscr, .unary_op = nvm_bytearray_unary_op, .print = NULL, .locals_dict = (mp_obj_t)&nvm_bytearray_locals_dict, };