micropython/ports/rp2/mpnetworkport.c

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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2014 Damien P. George
*
* 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/runtime.h"
#include "py/mphal.h"
#if MICROPY_PY_LWIP
#include "lwip/timeouts.h"
#include "pico/time.h"
// Poll lwIP every 64ms by default
#define LWIP_TICK_RATE_MS 64
static alarm_id_t lwip_alarm_id = -1;
static bool lwip_can_poll = true;
static bool lwip_poll_pending = false;
#if MICROPY_PY_WIZNET5K
static bool wiznet_poll_pending = false;
void wiznet5k_poll(void);
void wiznet5k_deinit(void);
#endif
u32_t sys_now(void) {
// Used by LwIP
return mp_hal_ticks_ms();
}
STATIC uint32_t lwip_poll(void) {
// Run the lwIP internal updates
sys_check_timeouts();
return MAX(5, MIN(sys_timeouts_sleeptime(), LWIP_TICK_RATE_MS));
}
void lwip_lock_acquire(void) {
lwip_can_poll = false;
}
void lwip_lock_release(void) {
lwip_can_poll = false;
#if MICROPY_PY_WIZNET5K
if (wiznet_poll_pending) {
wiznet5k_poll();
wiznet_poll_pending = false;
}
#endif
if (lwip_poll_pending) {
lwip_poll();
lwip_poll_pending = false;
}
lwip_can_poll = true;
}
uint32_t lwip_try_poll(void) {
uint32_t ret = LWIP_TICK_RATE_MS;
if (lwip_can_poll) {
lwip_can_poll = false;
ret = lwip_poll();
lwip_can_poll = true;
} else {
lwip_poll_pending = true;
}
return ret;
}
#if MICROPY_PY_WIZNET5K
void wiznet5k_try_poll(void) {
if (lwip_can_poll) {
lwip_can_poll = false;
wiznet5k_poll();
lwip_can_poll = true;
} else {
wiznet_poll_pending = true;
}
}
#endif
STATIC int64_t alarm_callback(alarm_id_t id, void *user_data) {
#if MICROPY_PY_WIZNET5K
wiznet5k_try_poll();
#endif
return (int64_t)lwip_try_poll() * 1000;
}
void mod_network_lwip_init(void) {
#if MICROPY_PY_WIZNET5K
wiznet5k_deinit();
#endif
if (lwip_alarm_id != -1) {
cancel_alarm(lwip_alarm_id);
}
lwip_alarm_id = add_alarm_in_us(LWIP_TICK_RATE_MS * 1000, alarm_callback, mp_const_true, true);
}
#endif // MICROPY_PY_LWIP