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6 EEPROM - 32-bit CRC
This module contains APIs to calculate, store and validate 32-bit CCITT CRC for a given EEPROM region.
6.2 Functions
6.2.2 DIAG_EEPROM_ValidateCRC32
This API validates the CRC of a given EEPROM memory region by re-calculating and comparing it with reference CRC stored by GUID-362EF8FB-4A72-4223-83D4-0D8B0365BDBA.html.

Introduction
This document contains API documentation for the diagnostic tests included MPLAB® Code Configurator AVR® IEC60730 Class B Diagnostic Library.
1 Software Requirements
2 Clock Frequency Test
This module contains functional safety diagnostics APIs for Clock Frequency test.
3 CPU Program Counter
This module contains functional safety diagnostics APIs for CPU Program counter test.
4 CPU Registers
This module contains functional safety diagnostics APIs for CPU Registers.
5 EEPROM - 16-bit CRC
This module contains APIs to calculate, store and validate 16-bit CCITT CRC for a given EEPROM region.
6 EEPROM - 32-bit CRC
This module contains APIs to calculate, store and validate 32-bit CCITT CRC for a given EEPROM region.
- 6.1 Defines
- 6.2 Functions
  - 6.2.1 DIAG_EEPROM_CalculateStoreCRC32
    This API calculates 32-bit CRC for a given EEPROM memory region and stores the same at EEPROM address indicated by storeAddress argument.
  - 6.2.2 DIAG_EEPROM_ValidateCRC32
    This API validates the CRC of a given EEPROM memory region by re-calculating and comparing it with reference CRC stored by GUID-362EF8FB-4A72-4223-83D4-0D8B0365BDBA.html.
  - 6.2.3 DIAG_EEPROM_CalculateCRC32
    This API calculates 32-bit CRC with CCITT Direct Computation method for given EEPROM memory region. This API will be used by GUID-362EF8FB-4A72-4223-83D4-0D8B0365BDBA.html and GUID-3ABA3EF7-BB77-414D-899B-F758230C1FCA.html.
7 FLASH - 16-bit CRC
This module contains APIs to calculate, store and validate 16-bit CCITT CRC for a given FLASH region.
8 FLASH - 32-bit CRC
This module contains APIs to calculate, store and validate 32-bit CCITT CRC for a given FLASH region.
9 Interrupt Frequency Test
This module contains functional safety diagnostics API for Interrupt Frequency Test.
10 SRAM - Checkerboard Algorithm
This module contains functional safety diagnostics APIs for SRAM Checkerboard Test.
11 SRAM - March C-Minus Algorithm
This module contains functional safety diagnostics APIs for SRAM March-C Minus.
12 Simple Watchdog Timer
This module contains functional safety diagnostics APIs for WatchDog Timer Test.
13 Windowed Watchdog Timer
This module contains functional safety diagnostics APIs for WatchDog Timer Test.
14 File List
Here is a list of all documented files with brief descriptions
15 Class List
Here is a list of all documented files with brief descriptions

6.2.2 DIAG_EEPROM_ValidateCRC32

This API validates the CRC of a given EEPROM memory region by re-calculating and comparing it with reference CRC stored by DIAG_EEPROM_CalculateStoreCRC32.

diag_crc_status_t DIAG_EEPROM_ValidateCRC32(
    uint16_t startAddress,    uint16_t length,    uint16_t refAddress
)

Parameters


[in] startAddress	uint16_t - starting address of EEPROM memory region to be considered for CRC
[in] length	uint16_t - number of bytes from startAddress to be considered for CRC
[in] refAddress	uint16_t - the EEPROM address where reference CRC is available

Returns


diag_crc_status_t	CRC_OK= 0, CRC_ERROR= 1, CRC_INVALID_ADDRESS= 2, CRC_INVALID_LENGTH= 3