Watchdog is hardware driver. It interacts with HAL - provides wrapper to interact with the peripheral.
Provides basic functionality: start/stop, get timeout/max timeout.
It is automatically kicked by a timer, according to the timeout set in ctor.
- mbed_watchdog_mgr has interface name mbed_wdog_manager_start(),mbed_wdog_manager_stop(),mbed_wdog_manager_kick()
- HwWatchdog is going to attach with LowPowerTIcker for periodic callback functionality
- mbed_wdog_manager_start() will either get start either by BL/RTOS Aps,it reads the timeout value specified via macro and macro gets defined in target.json file.
- mbed_wdog_manager_start() internally configure below HAL hw watchdog with timeout specified via target.json
- mbed_wdog_manager_start() internally divide the timeout(specified in target.json) by the 2 and attach LowPowerTicker with periodic callback of hw_kick()
- mbed_wdog_manager_start() internally create one instance of sw watchdog class,to access the static list data structure of sw watchdog class
- mbed_wdog_manager_kick() function periodically get called and refresh the hw watchdog to avoid watchdog reset
- converted C++ code into C based APIs
- added boolean to control watchdog start and stop
- Added detach from ticker on stop API
Fix WATCHDOG_STATUS_INVALID_ARGUMENT for timeout values from 1 ms to
407 ms (fix inability to set prescaler bits to zero).
Fix timeout <-> IWDG registers conversions.
Fix read & write access to IWDG_PR and IWDG_RLR registers.
Fix LSI RC frequency setting.
Limit MAX_TIMEOUT_MS to UINT32_MAX.
- Fix typo in module comment
- Redefine the default system behaviour in sleep mode
- Guard K64F enableWait flag
- Remove bit shifts from reset reason enum
- Add preprocessor guard to watchdog api that errors if the reset reason api is not also implemented
- Add RESET_REASON and WATCHDOG to K64F targets.json
- Add watchdog reference implementation