Built In Self Test - Executed periodically. More...

Classes
struct	sl_iec60730_safety_check_t

Functions
void	sl_iec60730_safety_check_error_occur (sl_iec60730_test_failure_t failure)

void	sl_iec60730_safety_check_reset_error (void)

sl_iec60730_safety_check_t *	sl_iec60730_safety_check_get_error (void)

void	sl_iec60730_bist (void)

Detailed Description

Built In Self Test - Executed periodically.

sl_iec60730_bist() confirms correct operation of the device during main loop execution. If a module validation fails, sl_iec60730_safe_state() is called.

OEM code must call sl_iec60730_safety_check_error_occur to set iec60730_safety_check to one of the failure conditions in sl_iec60730_test_failure_t if the code determines a failure has occurred. This can be used for communications channels or to trigger Safe State entry due to a failure within an interrupt.

The validation time for the full memory varies between devices depending on the size of memory available, and how frequently sl_iec60730_bist() is called by the main loop. For details see BIST call frequency.

Periodic BIST execution is shown in Figure 1

Figure 1 Flow chart of periodic BIST execution

Function Documentation

◆ sl_iec60730_bist()

void sl_iec60730_bist ( void )

public IEC60730 Built In Self Test

Returns: None. If validation fails function never returns. If validation passes, function returns.

Each module is tested, and if a failure is detected sl_iec60730_safe_state() is called. If a test failure occurs outside this function (such as comms), called function sl_iec60730_safety_check_error_occur set iec60730_safety_check to sl_iec60730_test_failure_t.

◆ sl_iec60730_safety_check_error_occur()

void sl_iec60730_safety_check_error_occur ( sl_iec60730_test_failure_t failure )

public IEC60730 save error to variable iec60730_safety_check

Parameters

failure Enum with the failing test, can be preserved for debug.

Returns: None.

Called by OEM and interrupt check functions to set iec60730_safety_check to sl_iec60730_test_failure_t.

◆ sl_iec60730_safety_check_get_error()

sl_iec60730_safety_check_t* sl_iec60730_safety_check_get_error ( void )

public IEC60730 return value variable iec60730_safety_check

Returns: pointer type sl_iec60730_safety_check_t point to variable containing the errors that occurred and the number of errors

Called by OEM in sl_iec60730_safe_state functions to get value iec60730_safety_check, so OEM can get all sl_iec60730_test_failure_t occur

◆ sl_iec60730_safety_check_reset_error()

void sl_iec60730_safety_check_reset_error ( void )

public IEC60730 reset value local iec60730_safety_check

Returns: None

Called by OEM when wanting to reset local variable value iec60730_safety_check which containing the errors that occurred and the number of errors