123 lines
3.2 KiB
C
123 lines
3.2 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) 2014 Damien P. George
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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/runtime.h"
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#include "py/mphal.h"
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#if MICROPY_PY_LWIP
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#include "lwip/timeouts.h"
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#include "pico/time.h"
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// Poll lwIP every 64ms by default
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#define LWIP_TICK_RATE_MS 64
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static alarm_id_t lwip_alarm_id = -1;
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static bool lwip_can_poll = true;
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static bool lwip_poll_pending = false;
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#if MICROPY_PY_NETWORK_WIZNET5K
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static bool wiznet_poll_pending = false;
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void wiznet5k_poll(void);
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void wiznet5k_deinit(void);
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#endif
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u32_t sys_now(void) {
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// Used by LwIP
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return mp_hal_ticks_ms();
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}
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STATIC uint32_t lwip_poll(void) {
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// Run the lwIP internal updates
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sys_check_timeouts();
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return MAX(5, MIN(sys_timeouts_sleeptime(), LWIP_TICK_RATE_MS));
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}
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void lwip_lock_acquire(void) {
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lwip_can_poll = false;
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}
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void lwip_lock_release(void) {
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lwip_can_poll = false;
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#if MICROPY_PY_NETWORK_WIZNET5K
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if (wiznet_poll_pending) {
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wiznet5k_poll();
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wiznet_poll_pending = false;
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}
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#endif
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if (lwip_poll_pending) {
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lwip_poll();
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lwip_poll_pending = false;
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}
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lwip_can_poll = true;
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}
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uint32_t lwip_try_poll(void) {
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uint32_t ret = LWIP_TICK_RATE_MS;
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if (lwip_can_poll) {
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lwip_can_poll = false;
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ret = lwip_poll();
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lwip_can_poll = true;
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} else {
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lwip_poll_pending = true;
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}
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return ret;
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}
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#if MICROPY_PY_NETWORK_WIZNET5K
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void wiznet5k_try_poll(void) {
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if (lwip_can_poll) {
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lwip_can_poll = false;
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wiznet5k_poll();
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lwip_can_poll = true;
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} else {
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wiznet_poll_pending = true;
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}
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}
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#endif
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STATIC int64_t alarm_callback(alarm_id_t id, void *user_data) {
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#if MICROPY_PY_NETWORK_WIZNET5K
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wiznet5k_try_poll();
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#endif
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return (int64_t)lwip_try_poll() * 1000;
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}
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void mod_network_lwip_init(void) {
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#if MICROPY_PY_NETWORK_WIZNET5K
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wiznet5k_deinit();
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#endif
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if (lwip_alarm_id != -1) {
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cancel_alarm(lwip_alarm_id);
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}
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lwip_alarm_id = add_alarm_in_us(LWIP_TICK_RATE_MS * 1000, alarm_callback, mp_const_true, true);
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}
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#endif // MICROPY_PY_LWIP
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