/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#include <nrf.h>
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#include "hal/hal_system.h"
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enum hal_reset_reason
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hal_reset_cause(void)
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{
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static enum hal_reset_reason reason;
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uint32_t reg;
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if (reason) {
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return reason;
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}
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reg = NRF_POWER->RESETREAS;
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if (reg & (POWER_RESETREAS_DOG_Msk | POWER_RESETREAS_LOCKUP_Msk)) {
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reason = HAL_RESET_WATCHDOG;
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} else if (reg & POWER_RESETREAS_SREQ_Msk) {
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reason = HAL_RESET_SOFT;
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} else if (reg & POWER_RESETREAS_RESETPIN_Msk) {
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reason = HAL_RESET_PIN;
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} else if (reg & POWER_RESETREAS_OFF_Msk) {
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reason = HAL_RESET_SYS_OFF_INT;
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} else {
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reason = HAL_RESET_POR; /* could also be brownout */
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}
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NRF_POWER->RESETREAS = reg;
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return reason;
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}
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