mbed-os/platform/mbed_reset_reason.cpp

46 lines
1.2 KiB
C++

/* mbed Microcontroller Library
* Copyright (c) 2017 ARM Limited
*
* 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 "mbed_reset_reason.h"
#if DEVICE_RESET_REASON
namespace mbed {
reset_reason_t mbed_reset_reason_get(void)
{
// 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();
// Call get raw to cache the reset reason before clearing the registers.
hal_reset_reason_get_raw();
hal_reset_reason_clear();
return reason;
}
uint32_t mbed_reset_reason_get_raw(void)
{
const static uint32_t reason = hal_reset_reason_get_raw();
return reason;
}
} // namespace mbed
#endif // DEVICE_RESET_REASON