s32k design studio example CRC /How to make a Fault(error)?

tkdwofl · ‎10-08-2018

Hello

i don't speak english well.

Thanks for taking my question.

i want to make a CRC error. because i want to check CRC function in Safety mechanism.

I can see a example in S32k14x EAR SDK(crc_checksum_s32k144)

i was curious when looking at the example.

1. what is input? (How to make result 0xB532U)

2. Result is defined : 0xB532U why RESULT_CRC16_CCITT is 0x532? i think that Result is calculated CRC result value.

3. How to make CRC error?

Thanks for taking my question.

jiri_kral · ‎10-09-2018

Hi,

the input is array of 32bit integers stored in input_data.c source code:

The result is pre-calculated result of input data used for comparison with result form hardware CRC module based on input data. If you change value in input data array - CRC module returns different CRC number and you got CRC error in this example and Red LED will lite.

Hope it helps.

Jiri