65 lines
2.4 KiB
C
65 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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*
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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 "samd/sercom.h"
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#include "common-hal/busio/__init__.h"
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static bool never_reset_sercoms[SERCOM_INST_NUM];
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void never_reset_sercom(Sercom *sercom) {
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// Reset all SERCOMs except the ones being used by on-board devices.
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Sercom *sercom_instances[SERCOM_INST_NUM] = SERCOM_INSTS;
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for (int i = 0; i < SERCOM_INST_NUM; i++) {
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if (sercom_instances[i] == sercom) {
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never_reset_sercoms[i] = true;
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break;
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}
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}
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}
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void allow_reset_sercom(Sercom *sercom) {
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// Reset all SERCOMs except the ones being used by on-board devices.
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Sercom *sercom_instances[SERCOM_INST_NUM] = SERCOM_INSTS;
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for (int i = 0; i < SERCOM_INST_NUM; i++) {
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if (sercom_instances[i] == sercom) {
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never_reset_sercoms[i] = false;
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break;
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}
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}
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}
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void reset_sercoms(void) {
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// Reset all SERCOMs except the ones being used by on-board devices.
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Sercom *sercom_instances[SERCOM_INST_NUM] = SERCOM_INSTS;
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for (int i = 0; i < SERCOM_INST_NUM; i++) {
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if (never_reset_sercoms[i]) {
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continue;
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}
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// SWRST is same for all modes of SERCOMs.
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sercom_instances[i]->SPI.CTRLA.bit.SWRST = 1;
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}
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}
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