mbed-os/drivers/source/ResetReason.cpp

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/*
* Copyright (c) 2018-2019 Arm Limited and affiliates.
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* SPDX-License-Identifier: Apache-2.0
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*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "ResetReason.h"
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#ifdef DEVICE_RESET_REASON
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namespace mbed {
reset_reason_t ResetReason::get()
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{
// Store the reason statically so it can be accessed after the first call to
// this function resets it.
const static reset_reason_t reason = hal_reset_reason_get();
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// Call get raw to cache the reset reason before clearing the registers.
ResetReason::get_raw();
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hal_reset_reason_clear();
return reason;
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}
uint32_t ResetReason::get_raw()
{
const static uint32_t reason = hal_reset_reason_get_raw();
return reason;
}
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} // namespace mbed
#endif // DEVICE_RESET_REASON