Introduction
This document contains API documentation for the diagnostic tests included in the MPLAB® Code Configurator AVR® ISO26262 Diagnostic Library.
1 Software Requirements
2 SW_CPU_SELF_TEST_LIB_01
This file contains prototypes and datatypes for CPU self tests.
3 SW_CPU_SELF_TEST_LIB_01 - Subset-1
This file contains prototypes and datatypes for CPU self test subset-1.
4 SW_CPU_SELF_TEST_LIB_01 - subset-2
This file contains prototypes and datatypes for CPU self test subset-2.
5 SW_CPU_SELF_TEST_LIB_01 - subset-3
This file contains prototypes and datatypes for CPU self test subset-3.
6 SW_CLOCK_PERIODIC_MONITOR_01
This module contains functional safety diagnostics APIs for Clock Frequency test.
7 SW_CPU_REGISTER_TEST_01
This module contains functional safety diagnostics APIs for CPU Registers.
8 SW_EEPROM_MEMORY_CHECKSUM_CRC_TEST_01 - CRC16
This module contains APIs to calculate, store and validate 16-bit CCITT CRC for a given EEPROM region.
9 SW_EEPROM_MEMORY_CHECKSUM_CRC_TEST_01 - CRC32
This module contains APIs to calculate, store and validate 32-bit CCITT CRC for a given EEPROM region.
10 SW_FLASH_MEMORY_CHECKSUM_CRC_TEST_01 - CRC16
This module contains APIs to calculate, store and validate 16-bit CCITT CRC for a given FLASH region.
11 SW_FLASH_MEMORY_CHECKSUM_CRC_TEST_01 - CRC32
This module contains APIs to calculate, store and validate 32-bit CCITT CRC for a given FLASH region.
12 SW_INTERRUPT_FREQUENCY_TEST_01
This module contains functional safety diagnostics API for Interrupt Frequency Test.
13 SW_SRAM_MARCH_TEST_01 - MarchC_Minus
This module contains functional safety diagnostics APIs for SRAM March-C Minus.
14 SW_WATCHDOG_SIMPLE_TIMER_STARTUP_TEST_01
This module contains functional safety diagnostics APIs for WatchDog Timer Test.
15 SW_WDT_WINDOWED_TIMER_STARTUP_TEST_01
This module contains functional safety diagnostics APIs for WatchDog Timer Test.
16 File List
Here is a list of all documented files with brief descriptions
17 Class List
Here is a list of all documented files with brief descriptions

1.9 Windowed Watchdog Timer

Test Name: Windowed WDT Test.

Purpose of test: The watchdog timer (WDT) is a system function for monitoring correct program operation that allows recovering from error situations such as runaway or deadlocked code.

Requirement ID: SW_WDT_WINDOWED_TIMER_STARTUP_TEST_01

Acceptable Measure: Time-slot monitoring of the program sequence

Description: This diagnostic tests the following:

WDT issues a system reset if it is untimely reset (WDT window mode)
- This consists of configuring the WDT in window mode and the test state is set accordingly, and then an early reset of the WDT is performed. When the window is closed the WDT should issue a system reset. If a system reset does not occur the error state is set. After this step, a check is performed to see that the WDT reset works when the WDT window is open.
WDT issues a system reset if no WDR is executed (WDT window mode)
- The WDT is expected to issue a system reset without any dependencies with WDR instruction. Upon timely reset, the WDT sets to the appropriate error-free test state

API Documentation: 15 SW_WDT_WINDOWED_TIMER_STARTUP_TEST_01