WDT Class

WDT Class

Description
A class used for initializing, starting, stopping watchdog timer.

Syntax
class WDT

Members

Public Constructors 
WDT::WDTConstructs an WDT object.
Public Methods 
WDT::initInitialize the watchdog, including time setting, and mode register.
WDT::startEnable and start the watchdog timer.
WDT::stopStop the watchdog timer.
WDT::refreshRefresh the watchdog timer to prevent WDT timeout.
WDT::init_irqSwitch the watchdog timer to interrupt mode and register a watchdog timer timeout interrupt handler.

WDT::init

Description
Initialize the watchdog, including time setting, and mode register.

Syntax
void init(uint32_t timeout_ms);

Parameters
timeout_ms: the watch-dog timer timeout value in millisecond (ms). The default action after watchdog timer timeout is to reset the whole system.

Returns
NA

Example Code
Example: SimpleWDT

Notes and Warnings
“WDT.h” must be included to use the class function.

WDT::start

Description
Start the watchdog timer by enabling the WDG state.

Syntax
void start(void);

Parameters
NA

Returns
NA

Example Code
Example: SimpleWDT

Notes and Warnings
“WDT.h” must be included to use the class function.

WDT::stop

Description
Stop the watchdog timer by disabling the WDG state.

Syntax
void stop(void);

Parameters
NA

Returns
NA

Example Code
Example: SimpleWDT

Notes and Warnings
“WDT.h” must be included to use the class function.

WDT::refresh

Description
Clear WDG Timer and refresh the watchdog timer to prevent WDT timeout.

Syntax
void refresh(void);

Parameters
NA

Returns
NA

Example Code
Example: SimpleWDT

Notes and Warnings
“WDT.h” must be included to use the class function.

WDT::init_irq

Description
Switch the watchdog timer to interrupt mode and register a watchdog timer timeout interrupt handler. The interrupt handler will be called when the watchdog timer is timeout.

Syntax
void init_irq(wdt_irq_handler handler, uint32_t id);

Parameters
handler: the callback function for WDT timeout interrupt.
id: the parameter for the callback function.

Returns
NA

Example Code
Example: SimpleWDT

Notes and Warnings
“WDT.h” must be included to use the class function.

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