Functions

General Description

Functions
uint8_t	SelfTest_Windowed_WDT (void)
	This function checks the WDT in Window mode.
uint8_t	SelfTest_Windowed_MCWDT (MCWDT_STRUCT_Type *base, cy_en_mcwdtctr_t counter)
	Verifies the windowed WDT behaviour of the specified MCWDT sub-counter.

Function Documentation

SelfTest_Windowed_WDT()

uint8_t SelfTest_Windowed_WDT

(

void

)

This function checks the WDT in Window mode.

It:
1) Services the WDT before the LOWER limit, which causes the device to reset.
2) Checks the occurance of interrupt at WARN LIMIT.

Note

Applicable only for XMC7000 and XMC5000 devices. This test reconfigures the WDT window, warning interrupt, and reset action. Do not call it while the application relies on the same WDT configuration for normal supervision unless the application can tolerate the temporary watchdog setup and the intentional reset path.

Returns

OK_STATUS (0) - Test passed
ERROR_STATUS (1) - Test failed

SelfTest_Windowed_MCWDT()

uint8_t SelfTest_Windowed_MCWDT	(	MCWDT_STRUCT_Type *	base,
		cy_en_mcwdtctr_t	counter )

Verifies the windowed WDT behaviour of the specified MCWDT sub-counter.

It:
1) Services the MCWDT before the lower limit, which causes the device to reset (SWWDTx).
2) After the reset, verifies that the match interrupt fires at the configured match limit.

Parameters

base	Pointer to the MCWDT block base address (e.g. MCWDT_STRUCT0).
counter	Sub-counter to test. Valid values: CY_MCWDT_COUNTER0, CY_MCWDT_COUNTER1.

Note

Applicable for PSOC Control Device Family. Only CY_MCWDT_COUNTER0 and CY_MCWDT_COUNTER1 support the lower-limit windowed mode. This test reconfigures the selected MCWDT sub-counter, its lower-limit reset behavior, and its interrupt routing. Do not share the selected sub-counter with application watchdog supervision during the test.

Returns

OK_STATUS (0) - Test passed
ERROR_STATUS (1) - Test failed
MTB_STL_ERROR_TIMEOUT (10) - Counter stall detected (clock not running)