topic MPC5554 with external bus interface problem in MPC5xxx

MPC5554 with external bus interface problem

liumaomao — Sat, 17 Aug 2019 15:15:19 GMT

hi,

I am using MPC5554 Evaluation Board for testing External SRAM （two slices of IS61WV102416BLL chip ）and configured address 0x20000000. For example, store 0x40000 data in the external memory and then read it out.Why is the value written different from the value read?

Thanking you,

Regards

Re: MPC5554 with external bus interface problem

davidtosenovjan — Tue, 17 Sep 2019 14:02:46 GMT

Hi,

You don't need to write your own EBI initialization, it is already done in the CodeWarrior template.

Re: MPC5554 with external bus interface problem

liumaomao — Sat, 21 Mar 2020 14:40:13 GMT

Hi, David, I have modified MPC5554_HWInit.c file in your way,but it is still incorrect.I need your help .Thank you

Re: MPC5554 with external bus interface problem

davidtosenovjan — Wed, 25 Mar 2020 12:01:35 GMT

Could you specify "incorrect" behavior? Actually, are you using our EVB or your own prototype board? Used memory does not seem to be the same as we should have installed on the EVB.

I would like to test it myself, but I have the board at work, currently being on forced home office..