75 lines
2.6 KiB
C
75 lines
2.6 KiB
C
|
/*
|
||
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
||
|
|
*
|
||
|
|
* The MIT License (MIT)
|
||
|
|
*
|
||
|
|
* Copyright (c) 2021 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"
|
||
|
|
|
||
|
|
static struct k_poll_signal wait_signal;
|
||
|
|
static struct k_poll_event wait_events[2] = {
|
||
|
|
K_POLL_EVENT_INITIALIZER(K_POLL_TYPE_SIGNAL,
|
||
|
|
K_POLL_MODE_NOTIFY_ONLY,
|
||
|
|
&wait_signal),
|
||
|
|
K_POLL_EVENT_STATIC_INITIALIZER(K_POLL_TYPE_SEM_AVAILABLE,
|
||
|
|
K_POLL_MODE_NOTIFY_ONLY,
|
||
|
|
NULL, 0),
|
||
|
|
};
|
||
|
|
|
||
|
|
void mp_hal_init(void) {
|
||
|
|
k_poll_signal_init(&wait_signal);
|
||
|
|
}
|
||
|
|
|
||
|
|
void mp_hal_signal_event(void) {
|
||
|
|
k_poll_signal_raise(&wait_signal, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
void mp_hal_wait_sem(struct k_sem *sem, uint32_t timeout_ms) {
|
||
|
|
mp_uint_t t0 = mp_hal_ticks_ms();
|
||
|
|
if (sem) {
|
||
|
|
k_poll_event_init(&wait_events[1], K_POLL_TYPE_SEM_AVAILABLE, K_POLL_MODE_NOTIFY_ONLY, sem);
|
||
|
|
}
|
||
|
|
for (;;) {
|
||
|
|
k_timeout_t wait;
|
||
|
|
if (timeout_ms == (uint32_t)-1) {
|
||
|
|
wait = K_FOREVER;
|
||
|
|
} else {
|
||
|
|
uint32_t dt = mp_hal_ticks_ms() - t0;
|
||
|
|
if (dt >= timeout_ms) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
wait = K_MSEC(timeout_ms - dt);
|
||
|
|
}
|
||
|
|
k_poll(wait_events, sem ? 2 : 1, wait);
|
||
|
|
if (wait_events[0].state == K_POLL_STATE_SIGNALED) {
|
||
|
|
wait_events[0].signal->signaled = 0;
|
||
|
|
wait_events[0].state = K_POLL_STATE_NOT_READY;
|
||
|
|
mp_handle_pending(true);
|
||
|
|
} else if (sem && wait_events[1].state == K_POLL_STATE_SEM_AVAILABLE) {
|
||
|
|
wait_events[1].state = K_POLL_STATE_NOT_READY;
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|