MPC5744 Error Injection Module

ahmedsoubky — Tue, 09 May 2017 10:11:46 GMT

Dears,

I am trying to inject RAM ECC errors in MPC5744 micro using EIM.

I followed the sequence in example code here. But, it isn't working and it is for another derivative.

According to MPC5744 RM:

"To properly enable
the error injection mechanism for a channel, execute both of the following:
• Assert the EICHEN[EICHnEN] field, where n denotes the channel number.
• Assert EIMCR[GEIEN]."

I tried this sequence as well, but neither registers are updated nor exception happens.

Can you please support ?

Thanks in advance,

Best Regards

Ahmed

Re: MPC5744 Error Injection Module

davidtosenovjan — Fri, 12 May 2017 06:47:40 GMT

By MPC5744P's EIM module you can inject ECC fault only to transfer control descriptor of eDMA (that is peripheral RAM) as you can see in attached.

Recently I have tried another option with using of core register E2EECSR. If you enable E2EECSR0[INVC]=1 error injection and setup certain mask to E2EECSR0[CHKINVT] bits, subsequent write to SRAM creates error and following read of this area causes bus error. However I don’t have prepared example yet for this.

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MPC5744 Error Injection Module

Re: MPC5744 Error Injection Module