108 lines
4.0 KiB
C
108 lines
4.0 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 Nick Moore
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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 <stdio.h>
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#include "py/objlist.h"
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#include "py/runtime.h"
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#include "py/mphal.h"
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#include "py/mperrno.h"
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#include "supervisor/shared/tick.h"
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#include "shared-bindings/random/__init__.h"
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#include "shared-module/network/__init__.h"
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// mod_network_nic_list needs to be declared in mpconfigport.h
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void network_module_init(void) {
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mp_obj_list_init(&MP_STATE_PORT(mod_network_nic_list), 0);
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}
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void network_module_deinit(void) {
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for (mp_uint_t i = 0; i < MP_STATE_PORT(mod_network_nic_list).len; i++) {
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mp_obj_t nic = MP_STATE_PORT(mod_network_nic_list).items[i];
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mod_network_nic_type_t *nic_type = (mod_network_nic_type_t*)mp_obj_get_type(nic);
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if (nic_type->deinit != NULL) nic_type->deinit(nic);
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}
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mp_obj_list_set_len(&MP_STATE_PORT(mod_network_nic_list), 0);
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}
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void network_module_background(void) {
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static uint32_t next_tick = 0;
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uint32_t this_tick = supervisor_ticks_ms32();
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if (this_tick < next_tick) return;
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next_tick = this_tick + 1000;
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for (mp_uint_t i = 0; i < MP_STATE_PORT(mod_network_nic_list).len; i++) {
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mp_obj_t nic = MP_STATE_PORT(mod_network_nic_list).items[i];
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mod_network_nic_type_t *nic_type = (mod_network_nic_type_t*)mp_obj_get_type(nic);
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if (nic_type->timer_tick != NULL) nic_type->timer_tick(nic);
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}
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}
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void network_module_register_nic(mp_obj_t nic) {
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for (mp_uint_t i = 0; i < MP_STATE_PORT(mod_network_nic_list).len; i++) {
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if (MP_STATE_PORT(mod_network_nic_list).items[i] == nic) {
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// nic already registered
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return;
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}
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}
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// nic not registered so add to list
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mp_obj_list_append(MP_OBJ_FROM_PTR(&MP_STATE_PORT(mod_network_nic_list)), nic);
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}
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mp_obj_t network_module_find_nic(const uint8_t *ip) {
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// find a NIC that is suited to given IP address
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for (mp_uint_t i = 0; i < MP_STATE_PORT(mod_network_nic_list).len; i++) {
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mp_obj_t nic = MP_STATE_PORT(mod_network_nic_list).items[i];
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// TODO check IP suitability here
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//mod_network_nic_type_t *nic_type = (mod_network_nic_type_t*)mp_obj_get_type(nic);
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return nic;
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}
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nlr_raise(mp_obj_new_exception_msg(&mp_type_OSError, translate("no available NIC")));
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}
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void network_module_create_random_mac_address(uint8_t *mac) {
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uint32_t rb1 = shared_modules_random_getrandbits(24);
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uint32_t rb2 = shared_modules_random_getrandbits(24);
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// first octet has multicast bit (0) cleared and local bit (1) set
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// everything else is just set randomly
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mac[0] = ((uint8_t)(rb1 >> 16) & 0xfe) | 0x02;
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mac[1] = (uint8_t)(rb1 >> 8);
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mac[2] = (uint8_t)(rb1);
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mac[3] = (uint8_t)(rb2 >> 16);
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mac[4] = (uint8_t)(rb2 >> 8);
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mac[5] = (uint8_t)(rb2);
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}
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uint16_t network_module_create_random_source_tcp_port(void) {
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return 0xc000 | shared_modules_random_getrandbits(14);
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}
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