4.2 CLASSB_CPU_RegistersTest

CLASSB_TEST_STATUS CLASSB_CPU_RegistersTest(bool running_context);

This self-test checks the processor core registers of the CPU, to detect stuck-at faults.

This self-test writes test patterns into the processor core registers, and special function registers, and read them back to detect stuck-at faults. Special function register bits which are reserved or should not be modified during the test are not written.

When the 'Test FPU Registers?' option is selected, the FPU registers will be tested.

None.

running_context - False for startup test. True for run-time test.

CLASSB_TEST_STATUS - Status of the test.

CLASSB_TEST_STATUS classb_test_status = CLASSB_TEST_NOT_EXECUTED;
// Perform run-time test of the CPU registers
classb_test_status = CLASSB_CPU_RegistersTest(true);

This self-test can be used during startup as well as run-time. If a failure is detected, this self-test remains in an infinite loop to avoid unsafe code execution.