7d8dac9211
Introduces a way to place CircuitPython code and data into tightly coupled memory (TCM) which is accessible by the CPU in a single cycle. It also frees up room in the corresponding cache for intermittent data. Loading from external flash is slow! The data cache is also now enabled. Adds support for the iMX RT 1021 chip. Adds three new boards: * iMX RT 1020 EVK * iMX RT 1060 EVK * Teensy 4.0 Related to #2492, #2472 and #2477. Fixes #2475.
66 lines
2.4 KiB
C
66 lines
2.4 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) 2016 Scott Shawcroft
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* Copyright (c) 2019 Artur Pacholec
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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/mpstate.h"
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#include "py/smallint.h"
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#include "shared-bindings/microcontroller/__init__.h"
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#include "supervisor/shared/tick.h"
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#include "fsl_common.h"
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void mp_hal_delay_ms(mp_uint_t delay) {
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uint64_t start_tick = supervisor_ticks_ms64();
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uint64_t duration = 0;
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while (duration < delay) {
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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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duration = (supervisor_ticks_ms64() - start_tick);
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// TODO(tannewt): Go to sleep for a little while while we wait.
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}
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}
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void mp_hal_delay_us(mp_uint_t delay) {
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#if defined(MIMXRT1011_SERIES) || defined(MIMXRT1021_SERIES)
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SDK_DelayAtLeastUs(delay, SystemCoreClock);
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#else
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SDK_DelayAtLeastUs(delay);
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#endif
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}
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void mp_hal_disable_all_interrupts(void) {
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common_hal_mcu_disable_interrupts();
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}
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void mp_hal_enable_all_interrupts(void) {
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common_hal_mcu_enable_interrupts();
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}
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