MPC5xxx中的主题 Re: MPC5634 Flash Problem

MPC5634 Flash Problem

dennisyuan — Mon, 20 Feb 2017 05:45:32 GMT

Hi ,

I am using the MPC5634 to develop the bootloader and application, the bootloader resetvector is 0x00000000, and the application resetvector is 0x00100000,they are in the same Bank0.

Now the problem is when I use bootloader to download the application always erase flash failed.But if the application resetvector is not in Bank0,it can erase flash success.

So I have the following 2 questions :

1.Why does the bootloader can't erase the flash area which is in the same Bank with the bootloader?

2.If can erase,what should I do?

Thanks and regards,

Dennis Yuan

Re: MPC5634 Flash Problem

davidtosenovjan — Mon, 20 Feb 2017 08:57:34 GMT

1) Read-While-Write (RWW) is supported between banks only. Thus, code performing flash programming must be either located in another bank or relocated to SRAM.

2) Relocate flash programming code to SRAM.

Re: MPC5634 Flash Problem

dennisyuan — Mon, 20 Feb 2017 09:25:28 GMT

Hi David,

Thank you very much to give me this answer ,but i still can't erase the area 0x00100000 of bank0 , I have Relocate flash programming code to SRAM address 0x40012000,and updated the LCF flie like this:

and when debug ,There is the data in the the SRAM address 0x40012000,you can see as follow:

but the result is not ok, I still can't erase or write the bank0 area 0x00100000,so I want to ask you :

1.Whether My LCF file config is correct? if not,what is the correct configration?

2.Whether need the other config in other files?if need.could you tell me how to config ?

Thanks and regards,

Dennis Yuan

Re: MPC5634 Flash Problem

davidtosenovjan — Fri, 24 Feb 2017 14:50:27 GMT

Hi, try to see following example code:

https://community.nxp.com/docs/DOC-101849

I have just made there what you are dealing about. LCF files modified plus programming in main routine.

Hope it helps

Re: MPC5634 Flash Problem

dennisyuan — Mon, 27 Feb 2017 15:29:30 GMT

Hi David,

thank you for your support ,and I have another question about the SSD ,where can I find the MPC5634 flash driver and demo program?

the SSD :MPC56XX_C90LC_JDP_SSD_100_DEVD ,I am not sure it can use .it just support the following chips:

Do u have any suggestion ?

Re: MPC5634 Flash Problem

davidtosenovjan — Tue, 28 Feb 2017 12:16:42 GMT

You can see any of these demos as the principle is the same. SSD library can be applied to MPC5634M device as well.

Re: MPC5634 Flash Problem

dennisyuan — Fri, 03 Mar 2017 15:02:28 GMT

Hi David,

Thank you for your great support ,I'll try it ,

thank you very much !