MPC5744 Error Injection Module

[ahmedsoubky]

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 

[davidtosenovjan]

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.