topic Re: S32K144 save data into EEPROM in S32K

S32K144 save data into EEPROM

jay_zhang — Thu, 21 Mar 2019 09:06:23 GMT

In our project, I want to store some configuration into EEPROM of the MCU, I check the sample code of flash_partitioning.

The code can write the data into EEPROM:

address = flashSSDConfig.EERAMBase;
size = sizeof(uint32_t);
ret = FLASH_DRV_EEEWrite(&flashSSDConfig, address, size, sourceBuffer);
DEV_ASSERT(STATUS_SUCCESS == ret);

But after reset the MCU, read the data is always 0xff.

My question is:

1. Is the data write into EEPROM with the example project?

2. How to read out the data in EEPROM, I cannot find the read function in flash_driver.c

Please help me, thanks

Re: S32K144 save data into EEPROM

jiri_kral — Thu, 21 Mar 2019 09:30:58 GMT

Hi,

here are two examples for EEPROM usage (one based on SDK, second one without SDK):

Example: S32K144 EEEPROM usage

https://community.nxp.com/docs/DOC-340625

Hope it helps.

Jiri

Re: S32K144 save data into EEPROM

jay_zhang — Fri, 22 Mar 2019 05:36:30 GMT

Hi Jiri,

I am following your guild to use the EEPROM on S32K144, first time I can flash the board(S32K144 EVB),

But I got the error as below when I flash again, do you know why?

;device freescale, s32k144f512m15, pflash_dflash_eeprom

;begin_cs device=$00000000, length=$14001000, ram=$20000000

Loading programming algorithm ...

WARNING - Selected .ARP file has been modified. CRC16 = $4977

Done.

CMD>PA 0204

Started.

Done.

Programming sequency is : erase, blank check, program, and verify {default}

CMD>VC

Verifying object file CRC-16 to device ranges ...

block 00000000-0000D1EF ...

Calculated CRC-16 does not match block. (File = $B18C, Device = $72E3)

Error verifying flash of device

CMD>EM

Thanks

Jay

Re: S32K144 save data into EEPROM

jiri_kral — Wed, 27 Mar 2019 13:52:08 GMT

Hi Jay,

If I remember it correctly - there is some issue with PE Micro plugin related to memory preservation.

You can try remove Memory preservation for FlashNVM range. Also emergency kinetis device recovery may help:

Jiri