MPC5554 with external bus interface problem

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

MPC5554 with external bus interface problem

710 Views
liumaomao
Contributor I

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

0 Kudos
3 Replies

542 Views
davidtosenovjan
NXP TechSupport
NXP TechSupport

Hi,

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

pastedImage_21.png

0 Kudos

540 Views
liumaomao
Contributor I

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

0 Kudos

540 Views
davidtosenovjan
NXP TechSupport
NXP TechSupport

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.

pastedImage_337.png

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

0 Kudos