[MPC5777C] How do I enable the ERROR0/1?

[jongminna]

Hello NXP engineers,

First of all, This is our system.

MCU : MPC5777C

SBC : FS65xx

ERROR0/1 pin in the MPC5777C are connected to IO2/3 in the SBC.

I want to implement MCU Error monitoring via SBC with Bi-stable Porotocol.

SBC configuration is more easier than MCU. So It is not matter.

But, "UTEST ERROR Functions Config" is difficult.

I did calculate CS and Address and User data like below refer to MPC5777CRM. But It is NOT working.

Also this value was calculated via MPC5764R DCF Config. (Yes, It is little bit different. But I did double check with MPC5777C's)

DCF records
0x00400328 0x0000000301000018
0x00400330 0xFFFFFFFC0100001C
0x00400338 0x8000000101000024

Please let me know that how to configure the ERROR0/1.

Best Regards,

JM

[petervlna]

Hi,

Unfortunately your DCF calculation is incorrect.

Yes MPC5746R implement DCF records, but the security part of DCF mechanism is quite different from MPC5777C.

There are 2 groups of DCF record mechanism

1. User has to calculate DCF record special strategies manually (as for MPC5746R)

2. The special strategies are calculated by HW mechanism already implemented in micro. (MPC5777C or M)

So in your case your DCF record special strategies are calculated by HW.

So your DCF record will be:

data.set 0x00400328 %QUAD 0x0000000301000014 ;DCF_UTEST_ERROR_FNC_PAD

Peter