187 lines
6.9 KiB
C
187 lines
6.9 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) 2018 Artur Pacholec
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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 <string.h>
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#include <stdio.h>
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#include "py/objproperty.h"
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#include "py/objstr.h"
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#include "py/runtime.h"
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#include "shared-bindings/bleio/Address.h"
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#include "shared-module/bleio/Address.h"
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#define ADDRESS_BYTE_LEN 12
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STATIC uint8_t xdigit_8b_value(byte nibble1, byte nibble2) {
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return unichar_xdigit_value(nibble1) | (unichar_xdigit_value(nibble2) << 4);
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}
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//| .. currentmodule:: bleio
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//|
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//| :class:`Address` -- BLE address
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//| =========================================================
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//|
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//| Encapsulates the address of a BLE device.
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//|
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//| .. class:: Address(address)
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//|
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//| Create a new Address object encapsulating the address value.
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//| The value itself can be one of:
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//|
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//| - a `str` value in the format of 'XXXXXXXXXXXX' or 'XX:XX:XX:XX:XX:XX' (12 hex digits)
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//| - a `bytes` or `bytearray` containing 6 bytes
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//| - another Address object
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//|
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//| :param address: The address to encapsulate
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//|
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//| .. attribute:: type
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//|
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//| The address type. One of:
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//|
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//| - `bleio.AddressType.PUBLIC`
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//| - `bleio.AddressType.RANDOM_STATIC`
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//| - `bleio.AddressType.RANDOM_PRIVATE_RESOLVABLE`
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//| - `bleio.AddressType.RANDOM_PRIVATE_NON_RESOLVABLE`
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//|
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STATIC mp_obj_t bleio_address_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *pos_args) {
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mp_arg_check_num(n_args, n_kw, 1, 1, true);
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bleio_address_obj_t *self = m_new_obj(bleio_address_obj_t);
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self->base.type = &bleio_address_type;
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self->type = ADDRESS_PUBLIC;
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mp_map_t kw_args;
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mp_map_init_fixed_table(&kw_args, n_kw, pos_args + n_args);
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enum { ARG_address };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_address, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_obj = MP_OBJ_NULL} },
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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(n_args, pos_args, &kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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const mp_obj_t address = args[ARG_address].u_obj;
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if (MP_OBJ_IS_STR(address)) {
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GET_STR_DATA_LEN(address, str, str_len);
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size_t value_index = 0;
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size_t str_index = str_len;
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bool error = false;
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// Loop until fewer than two characters left.
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while (str_index >= 1 && value_index < sizeof(self->value)) {
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if (str[str_index] == ':') {
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// Skip colon separators.
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str_index--;
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continue;
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}
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if (!unichar_isxdigit(str[str_index]) ||
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!unichar_isxdigit(str[str_index-1])) {
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error = true;
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break;
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}
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self->value[value_index] = xdigit_8b_value(str[str_index],
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str[str_index-1]);
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value_index += 1;
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str_index -= 2;
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}
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// Check for correct number of hex digits and no parsing errors.
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if (error || value_index != ADDRESS_BYTE_LEN || str_index != -1) {
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mp_raise_ValueError_varg(translate("Address is not %d bytes long or is in wrong format"),
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ADDRESS_BYTE_LEN);
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}
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} else if (MP_OBJ_IS_TYPE(address, &mp_type_bytearray) || MP_OBJ_IS_TYPE(address, &mp_type_bytes)) {
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mp_buffer_info_t buf_info;
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mp_get_buffer_raise(address, &buf_info, MP_BUFFER_READ);
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if (buf_info.len != BLEIO_ADDRESS_BYTES) {
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mp_raise_ValueError_varg(translate("Address must be %d bytes long"), BLEIO_ADDRESS_BYTES);
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}
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for (size_t b = 0; b < BLEIO_ADDRESS_BYTES; ++b) {
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self->value[BLEIO_ADDRESS_BYTES - b - 1] = ((uint8_t*)buf_info.buf)[b];
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}
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} else if (MP_OBJ_IS_TYPE(address, &bleio_address_type)) {
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// deep copy
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bleio_address_obj_t *other = MP_OBJ_TO_PTR(address);
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self->type = other->type;
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memcpy(self->value, other->value, BLEIO_ADDRESS_BYTES);
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}
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return MP_OBJ_FROM_PTR(self);
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}
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STATIC void bleio_address_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_t kind) {
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bleio_address_obj_t *self = MP_OBJ_TO_PTR(self_in);
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mp_printf(print, "Address('"HEX2_FMT":"HEX2_FMT":"HEX2_FMT":"HEX2_FMT":"HEX2_FMT":"HEX2_FMT"')",
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self->value[5], self->value[4], self->value[3],
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self->value[2], self->value[1], self->value[0]);
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}
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STATIC mp_obj_t bleio_address_get_type(mp_obj_t self_in) {
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bleio_address_obj_t *self = MP_OBJ_TO_PTR(self_in);
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if (self->type == ADDRESS_PUBLIC) {
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return (mp_obj_t)&bleio_addresstype_public_obj;
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} else if (self->type == ADDRESS_RANDOM_STATIC) {
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return (mp_obj_t)&bleio_addresstype_random_static_obj;
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} else if (self->type == ADDRESS_RANDOM_PRIVATE_RESOLVABLE) {
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return (mp_obj_t)&bleio_addresstype_random_private_resolvable_obj;
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} else if (self->type == ADDRESS_RANDOM_PRIVATE_NON_RESOLVABLE) {
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return (mp_obj_t)&bleio_addresstype_random_private_non_resolvable_obj;
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}
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(bleio_address_get_type_obj, bleio_address_get_type);
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const mp_obj_property_t bleio_address_type_obj = {
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.base.type = &mp_type_property,
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.proxy = {(mp_obj_t)&bleio_address_get_type_obj,
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(mp_obj_t)&mp_const_none_obj,
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(mp_obj_t)&mp_const_none_obj},
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};
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STATIC const mp_rom_map_elem_t bleio_address_locals_dict_table[] = {
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{ MP_ROM_QSTR(MP_QSTR_type), MP_ROM_PTR(&bleio_address_type_obj) },
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};
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STATIC MP_DEFINE_CONST_DICT(bleio_address_locals_dict, bleio_address_locals_dict_table);
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const mp_obj_type_t bleio_address_type = {
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{ &mp_type_type },
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.name = MP_QSTR_Address,
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.print = bleio_address_print,
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.make_new = bleio_address_make_new,
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.locals_dict = (mp_obj_dict_t*)&bleio_address_locals_dict
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};
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