S32DS-KEAZ128-KEA EEPROM Emulation Driver

Roc_Wang — Thu, 08 Apr 2021 06:04:49 GMT

Hello, We are using S32DS to develop a KEAZ128 project now. We have downloaded the EEPROM emulation "KEAZN8_64_EEE_DEVD", but our project can not work normally after using it. Is there a S32DS-KEAZ128 demo project available ? or How to use this driver in S32DS project ? Thank you !

Re: S32DS-KEAZ128-KEA EEPROM Emulation Driver

Roc_Wang — Thu, 08 Apr 2021 06:07:48 GMT

Re: S32DS-KEAZ128-KEA EEPROM Emulation Driver

Roc_Wang — Thu, 08 Apr 2021 06:30:53 GMT

This is my test project.

Re: S32DS-KEAZ128-KEA EEPROM Emulation Driver

Robin_Shen — Thu, 08 Apr 2021 08:08:58 GMT

Hi Wangyuepeng,

We offered a verified demo project below which can work normally based on the transplanted EEPROM emulated driver.(I will send it to you by email)

For the transplant process, there are several modification points which need to pay attention to:

1.This demo project is based on the FRDM-KEAZ128 EVB board, and you can find the reference documents in this website(https://www.nxp.com/design/development-boards/automotive-development-platforms/s32k-mcu-platforms/ke...).

2.The startup code is created by the new S32DS project for the toolchains of CodeWarrior and S32DS are different.

3.In order to avoid the conflicts between emulation EEPROM data and application code, we actively reserve dedicated memory for emulation EEPROM data in the linker file.
Specifically, 3KB of Flash memory is reserved for EEPROM simulation data(used for 6 sectors with only 512 bytes each).
For similar considerations, we reserved 1KB of dedicated memory in RAM to implement the cache table function.
Of course, the starting address of cache table and EEPROM simulation data should also be modified accordingly in the "ee_user_config.h" and "ee_demo.h" files.

4.Since there is only 1 RWW partition, Flash read operations(such as interrupts) are not supported when some EEPROM emulation drivers are executing the Flash write operations.
For this project, after the global interrupt was turned off during the execution of the "p_FLashLanchComamnd" macro operation in 3 APIs(Eed_SyncFlashErase()|Eed_EraseVerify()|Eed_FlashProgram()) in the "ee_low_level.c" file, the PIT ISR can run normally.

Best Regards,
Robin
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Re: S32DS-KEAZ128-KEA EEPROM Emulation Driver

Roc_Wang — Fri, 09 Apr 2021 02:55:39 GMT

Hi Robin,

I will try it directly.

Thank you very much !

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