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mpnetworkport.c
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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"
#include "pendsv.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;
#if MICROPY_PY_NETWORK_CYW43
#include "lib/cyw43-driver/src/cyw43.h"
#include "lib/cyw43-driver/src/cyw43_stats.h"
#include "hardware/irq.h"
#define CYW43_IRQ_LEVEL GPIO_IRQ_LEVEL_HIGH
#define CYW43_SHARED_IRQ_HANDLER_PRIORITY PICO_SHARED_IRQ_HANDLER_HIGHEST_ORDER_PRIORITY
volatile int cyw43_has_pending = 0;
static void gpio_irq_handler(void) {
uint32_t events = gpio_get_irq_event_mask(CYW43_PIN_WL_HOST_WAKE);
if (events & CYW43_IRQ_LEVEL) {
// As we use a high level interrupt, it will go off forever until it's serviced.
// So disable the interrupt until this is done. It's re-enabled again by
// CYW43_POST_POLL_HOOK which is called at the end of cyw43_poll_func.
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, CYW43_IRQ_LEVEL, false);
cyw43_has_pending = 1;
pendsv_schedule_dispatch(PENDSV_DISPATCH_CYW43, cyw43_poll);
CYW43_STAT_INC(IRQ_COUNT);
}
}
void cyw43_irq_init(void) {
gpio_add_raw_irq_handler_with_order_priority(CYW43_PIN_WL_HOST_WAKE, gpio_irq_handler, CYW43_SHARED_IRQ_HANDLER_PRIORITY);
irq_set_enabled(IO_IRQ_BANK0, true);
NVIC_SetPriority(PendSV_IRQn, PICO_LOWEST_IRQ_PRIORITY);
}
void cyw43_post_poll_hook(void) {
cyw43_has_pending = 0;
gpio_set_irq_enabled(CYW43_PIN_WL_HOST_WAKE, CYW43_IRQ_LEVEL, true);
}
#endif
#if MICROPY_PY_NETWORK_WIZNET5K
void wiznet5k_poll(void);
void wiznet5k_deinit(void);
void wiznet5k_try_poll(void) {
pendsv_schedule_dispatch(PENDSV_DISPATCH_WIZNET, wiznet5k_poll);
}
#endif
u32_t sys_now(void) {
// Used by LwIP
return mp_hal_ticks_ms();
}
STATIC void lwip_poll(void) {
// Run the lwIP internal updates
sys_check_timeouts();
}
void lwip_lock_acquire(void) {
// Prevent PendSV from running.
pendsv_suspend();
}
void lwip_lock_release(void) {
// Allow PendSV to run again.
pendsv_resume();
}
STATIC int64_t alarm_callback(alarm_id_t id, void *user_data) {
pendsv_schedule_dispatch(PENDSV_DISPATCH_LWIP, lwip_poll);
#if MICROPY_PY_NETWORK_WIZNET5K
pendsv_schedule_dispatch(PENDSV_DISPATCH_WIZNET, wiznet5k_poll);
#endif
return LWIP_TICK_RATE_MS * 1000;
}
void mod_network_lwip_init(void) {
#if MICROPY_PY_NETWORK_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