e99cf6e441
It didn't account for background task time and could end up sleeping for way longer than it should because the RTC compare time had already passed.
136 lines
4.4 KiB
C
136 lines
4.4 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) 2019 Jeff Epler for Adafruit Industries
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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 "supervisor/shared/tick.h"
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#include "py/mpstate.h"
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#include "supervisor/linker.h"
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#include "supervisor/filesystem.h"
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#include "supervisor/port.h"
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#include "supervisor/shared/autoreload.h"
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static volatile uint64_t PLACE_IN_DTCM_BSS(background_ticks);
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#if CIRCUITPY_GAMEPAD
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#include "shared-module/gamepad/__init__.h"
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#endif
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#if CIRCUITPY_GAMEPADSHIFT
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#include "shared-module/gamepadshift/__init__.h"
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#endif
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#include "shared-bindings/microcontroller/__init__.h"
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void supervisor_tick(void) {
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#if CIRCUITPY_FILESYSTEM_FLUSH_INTERVAL_MS > 0
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filesystem_tick();
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#endif
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#ifdef CIRCUITPY_AUTORELOAD_DELAY_MS
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autoreload_tick();
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#endif
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#ifdef CIRCUITPY_GAMEPAD_TICKS
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if (!(port_get_raw_ticks(NULL) & CIRCUITPY_GAMEPAD_TICKS)) {
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#if CIRCUITPY_GAMEPAD
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gamepad_tick();
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#endif
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#if CIRCUITPY_GAMEPADSHIFT
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gamepadshift_tick();
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#endif
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}
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#endif
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}
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uint64_t supervisor_ticks_ms64() {
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uint64_t result;
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common_hal_mcu_disable_interrupts();
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result = port_get_raw_ticks(NULL);
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common_hal_mcu_enable_interrupts();
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result = result * 1000 / 1024;
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return result;
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}
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uint32_t supervisor_ticks_ms32() {
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return supervisor_ticks_ms64();
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}
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extern void run_background_tasks(void);
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void PLACE_IN_ITCM(supervisor_run_background_tasks_if_tick)() {
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// TODO: Add a global that can be set by anyone to indicate we should run background tasks. That
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// way we can short circuit the background tasks early. We used to do it based on time but it
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// breaks cases where we wake up for a short period and then sleep. If we skipped the last
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// background task or more before sleeping we may end up starving a task like USB.
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run_background_tasks();
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}
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void mp_hal_delay_ms(mp_uint_t delay) {
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uint64_t start_tick = port_get_raw_ticks(NULL);
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// Adjust the delay to ticks vs ms.
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delay = delay * 1024 / 1000;
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uint64_t end_tick = start_tick + delay;
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int64_t remaining = delay;
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while (remaining > 0) {
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RUN_BACKGROUND_TASKS;
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// Check to see if we've been CTRL-Ced by autoreload or the user.
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if(MP_STATE_VM(mp_pending_exception) == MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_kbd_exception)) ||
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MP_STATE_VM(mp_pending_exception) == MP_OBJ_FROM_PTR(&MP_STATE_VM(mp_reload_exception))) {
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break;
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}
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remaining = end_tick - port_get_raw_ticks(NULL);
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// We break a bit early so we don't risk setting the alarm before the time when we call
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// sleep.
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if (remaining < 1) {
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break;
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}
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port_interrupt_after_ticks(remaining);
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// Sleep until an interrupt happens.
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port_sleep_until_interrupt();
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remaining = end_tick - port_get_raw_ticks(NULL);
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}
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}
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volatile size_t tick_enable_count = 0;
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extern void supervisor_enable_tick(void) {
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common_hal_mcu_disable_interrupts();
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if (tick_enable_count == 0) {
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port_enable_tick();
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}
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tick_enable_count++;
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common_hal_mcu_enable_interrupts();
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}
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extern void supervisor_disable_tick(void) {
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common_hal_mcu_disable_interrupts();
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if (tick_enable_count > 0) {
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tick_enable_count--;
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}
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if (tick_enable_count == 0) {
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port_disable_tick();
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}
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common_hal_mcu_enable_interrupts();
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}
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