db4b416ea8
The dispatch active flag is only set once and never reset, so it will always call the dispatch handler (once enabled), and it's not really needed because it doesn't make things more efficient. Also remove unused included headers.
60 lines
2.1 KiB
C
60 lines
2.1 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) 2013, 2014 Damien P. George
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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 <stdlib.h>
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#include "py/runtime.h"
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#include "pendsv.h"
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#define NVIC_PRIORITYGROUP_4 ((uint32_t)0x00000003)
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#define IRQ_PRI_PENDSV NVIC_EncodePriority(NVIC_PRIORITYGROUP_4, 15, 0)
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#if defined(PENDSV_DISPATCH_NUM_SLOTS)
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pendsv_dispatch_t pendsv_dispatch_table[PENDSV_DISPATCH_NUM_SLOTS];
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#endif
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void pendsv_init(void) {
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// set PendSV interrupt at lowest priority
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NVIC_SetPriority(PendSV_IRQn, IRQ_PRI_PENDSV);
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}
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#if defined(PENDSV_DISPATCH_NUM_SLOTS)
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void pendsv_schedule_dispatch(size_t slot, pendsv_dispatch_t f) {
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pendsv_dispatch_table[slot] = f;
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SCB->ICSR = SCB_ICSR_PENDSVSET_Msk;
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}
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void PendSV_Handler(void) {
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for (size_t i = 0; i < PENDSV_DISPATCH_NUM_SLOTS; ++i) {
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if (pendsv_dispatch_table[i] != NULL) {
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pendsv_dispatch_t f = pendsv_dispatch_table[i];
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pendsv_dispatch_table[i] = NULL;
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f();
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}
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}
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}
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#endif
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