mirror of https://github.com/ARMmbed/mbed-os.git
104 lines
2.2 KiB
C++
104 lines
2.2 KiB
C++
/*
|
|
* Copyright (c) 2018-2019 Arm Limited and affiliates.
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* 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.
|
|
*/
|
|
#ifdef DEVICE_WATCHDOG
|
|
|
|
#include "drivers/Watchdog.h"
|
|
|
|
namespace mbed {
|
|
|
|
Watchdog::Watchdog() : _running(false)
|
|
{
|
|
}
|
|
|
|
Watchdog::~Watchdog()
|
|
{
|
|
}
|
|
|
|
bool Watchdog::start(uint32_t timeout)
|
|
{
|
|
MBED_ASSERT(timeout <= get_max_timeout());
|
|
MBED_ASSERT(timeout > 0);
|
|
|
|
core_util_critical_section_enter();
|
|
if (_running) {
|
|
core_util_critical_section_exit();
|
|
return false;
|
|
}
|
|
watchdog_config_t config;
|
|
config.timeout_ms = timeout;
|
|
watchdog_status_t sts = hal_watchdog_init(&config);
|
|
if (sts == WATCHDOG_STATUS_OK) {
|
|
_running = true;
|
|
}
|
|
core_util_critical_section_exit();
|
|
return _running;
|
|
}
|
|
|
|
bool Watchdog::start()
|
|
{
|
|
|
|
return start(get_max_timeout());
|
|
}
|
|
|
|
bool Watchdog::stop()
|
|
{
|
|
watchdog_status_t sts;
|
|
bool msts = true;
|
|
core_util_critical_section_enter();
|
|
if (_running) {
|
|
sts = hal_watchdog_stop();
|
|
if (sts != WATCHDOG_STATUS_OK) {
|
|
msts = false;
|
|
} else {
|
|
_running = false;
|
|
}
|
|
|
|
} else {
|
|
msts = false;
|
|
}
|
|
core_util_critical_section_exit();
|
|
return msts;
|
|
}
|
|
|
|
void Watchdog::kick()
|
|
{
|
|
core_util_critical_section_enter();
|
|
hal_watchdog_kick();
|
|
core_util_critical_section_exit();
|
|
}
|
|
|
|
bool Watchdog::is_running() const
|
|
{
|
|
return _running;
|
|
}
|
|
|
|
uint32_t Watchdog::get_timeout() const
|
|
{
|
|
return hal_watchdog_get_reload_value();
|
|
}
|
|
|
|
uint32_t Watchdog::get_max_timeout() const
|
|
{
|
|
const watchdog_features_t features = hal_watchdog_get_platform_features();
|
|
return features.max_timeout;
|
|
}
|
|
|
|
} // namespace mbed
|
|
|
|
|
|
#endif // DEVICE_WATCHDOG
|