185 lines
7.4 KiB
C
185 lines
7.4 KiB
C
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/*
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* This file is part of the Micro Python 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) 2022 microDev
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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/binary.h"
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#include "py/objproperty.h"
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#include "py/runtime.h"
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#include "py/runtime0.h"
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#include "shared-bindings/coproc/CoprocMemory.h"
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#include "supervisor/shared/translate/translate.h"
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//| class CoprocMemory:
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//| def __init__(self, address: int, length: int) -> None:
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//| """Initialize coproc shared memory.
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//|
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//| :param address: address of shared memory
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//| :param length: length of shared memory"""
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STATIC mp_obj_t coproc_memory_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *all_args) {
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enum { ARG_address, ARG_length };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_address, MP_ARG_REQUIRED | MP_ARG_INT },
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{ MP_QSTR_length, MP_ARG_REQUIRED | MP_ARG_INT },
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};
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all_kw_array(n_args, n_kw, all_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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coproc_memory_obj_t *self = m_new_obj(coproc_memory_obj_t);
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self->base.type = &coproc_memory_type;
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self->address = args[ARG_address].u_int;
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self->len = args[ARG_length].u_int;
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return MP_OBJ_FROM_PTR(self);
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}
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//| def __bool__(self) -> bool:
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//| """``coproc_memory`` is ``True`` if its length is greater than zero.
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//| This is an easy way to check for its existence.
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//| """
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//| ...
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//| def __len__(self) -> int:
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//| """Return the length. This is used by (`len`)"""
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//| ...
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STATIC mp_obj_t coproc_memory_unary_op(mp_unary_op_t op, mp_obj_t self_in) {
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coproc_memory_obj_t *self = MP_OBJ_TO_PTR(self_in);
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uint16_t len = common_hal_coproc_memory_get_length(self);
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switch (op) {
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case MP_UNARY_OP_BOOL:
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return mp_obj_new_bool(len != 0);
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case MP_UNARY_OP_LEN:
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return MP_OBJ_NEW_SMALL_INT(len);
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default:
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return MP_OBJ_NULL; // op not supported
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}
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}
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STATIC const mp_rom_map_elem_t coproc_memory_locals_dict_table[] = {
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};
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STATIC MP_DEFINE_CONST_DICT(coproc_memory_locals_dict, coproc_memory_locals_dict_table);
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//| @overload
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//| def __getitem__(self, index: slice) -> bytearray: ...
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//| @overload
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//| def __getitem__(self, index: int) -> int:
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//| """Returns the value at the given index."""
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//| ...
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//| @overload
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//| def __setitem__(self, index: slice, value: ReadableBuffer) -> None: ...
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//| @overload
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//| def __setitem__(self, index: int, value: int) -> None:
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//| """Set the value at the given index."""
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//| ...
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//|
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STATIC mp_obj_t coproc_memory_subscr(mp_obj_t self_in, mp_obj_t index_in, mp_obj_t value) {
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if (value == MP_OBJ_NULL) {
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// delete item
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// slice deletion
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return MP_OBJ_NULL; // op not supported
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} else {
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coproc_memory_obj_t *self = MP_OBJ_TO_PTR(self_in);
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if (0) {
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#if MICROPY_PY_BUILTINS_SLICE
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} else if (mp_obj_is_type(index_in, &mp_type_slice)) {
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mp_bound_slice_t slice;
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if (!mp_seq_get_fast_slice_indexes(common_hal_coproc_memory_get_length(self), index_in, &slice)) {
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mp_raise_NotImplementedError(translate("only slices with step=1 (aka None) are supported"));
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}
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if (value != MP_OBJ_SENTINEL) {
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#if MICROPY_PY_ARRAY_SLICE_ASSIGN
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// Assign
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size_t src_len = slice.stop - slice.start;
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uint8_t *src_items;
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if (mp_obj_is_type(value, &mp_type_array) ||
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mp_obj_is_type(value, &mp_type_bytearray) ||
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mp_obj_is_type(value, &mp_type_memoryview) ||
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mp_obj_is_type(value, &mp_type_bytes)) {
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mp_buffer_info_t bufinfo;
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mp_get_buffer_raise(value, &bufinfo, MP_BUFFER_READ);
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if (bufinfo.len != src_len) {
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mp_raise_ValueError(translate("Slice and value different lengths."));
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}
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src_len = bufinfo.len;
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src_items = bufinfo.buf;
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if (1 != mp_binary_get_size('@', bufinfo.typecode, NULL)) {
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mp_raise_ValueError(translate("Array values should be single bytes."));
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}
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} else {
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mp_raise_NotImplementedError(translate("array/bytes required on right side"));
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}
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if (!common_hal_coproc_memory_set_bytes(self, slice.start, src_items, src_len)) {
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mp_raise_RuntimeError(translate("Unable to write"));
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}
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return mp_const_none;
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#else
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return MP_OBJ_NULL; // op not supported
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#endif
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} else {
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// Read slice.
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size_t len = slice.stop - slice.start;
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uint8_t *items = m_new(uint8_t, len);
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common_hal_coproc_memory_get_bytes(self, slice.start, items, len);
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return mp_obj_new_bytearray_by_ref(len, items);
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}
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#endif
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} else {
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// Single index rather than slice.
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size_t index = mp_get_index(self->base.type, common_hal_coproc_memory_get_length(self),
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index_in, false);
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if (value == MP_OBJ_SENTINEL) {
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// load
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uint8_t value_out;
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common_hal_coproc_memory_get_bytes(self, index, &value_out, 1);
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return MP_OBJ_NEW_SMALL_INT(value_out);
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} else {
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// store
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mp_int_t byte_value = mp_obj_get_int(value);
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mp_arg_validate_int_range(byte_value, 0, 255, MP_QSTR_bytes);
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uint8_t short_value = byte_value;
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if (!common_hal_coproc_memory_set_bytes(self, index, &short_value, 1)) {
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mp_raise_RuntimeError(translate("Unable to write"));
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}
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return mp_const_none;
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}
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}
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}
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}
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const mp_obj_type_t coproc_memory_type = {
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{ &mp_type_type },
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.name = MP_QSTR_CoprocMemory,
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.flags = MP_TYPE_FLAG_EXTENDED,
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.make_new = coproc_memory_make_new,
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.locals_dict = (mp_obj_t)&coproc_memory_locals_dict,
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MP_TYPE_EXTENDED_FIELDS(
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.subscr = coproc_memory_subscr,
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.unary_op = coproc_memory_unary_op,
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),
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};
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