Kinetis MicrocontrollersのトピックRe: KEA64 EEPROM

KEA64 EEPROM

star333 — Fri, 02 Sep 2022 21:06:17 GMT

I am working on NXP KEA64 MCU I want to read and write data to eeprom but I can't

find any example for KEA64 any one can help me ?

How I can find a simple example of read and write to eeprom ?

Thanks

Re: KEA64 EEPROM

Robin_Shen — Mon, 05 Sep 2022 01:29:39 GMT

Hi star333,

Please check if your device is KEAZN64 or KEAZ64.

For the device without 256B EEPROM, please refer to the answer in KEA8 EEPROM EMULATION.

Best Regards,
Robin
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Re: KEA64 EEPROM

star333 — Mon, 05 Sep 2022 05:57:43 GMT

I has a mistake that my mcu is not kea64 it is kea16

My MCU part number is "S9KEAZN16AM".

I check the datasheet it has 256B of eeprom.

What I do now?

Re: KEA64 EEPROM

Robin_Shen — Mon, 05 Sep 2022 11:28:45 GMT

Sorry. I did not find example for KEAZN16, but I think you can refer to the EEPROM_demo of KE02. Download the FRDM-KEXX Driver Library Package

Then you should be able to find the example (C:\Users\nxa07315\Desktop\FRDM-KEXX-Driver-Library-Package\ke_drv_lib\build\cw\ke02\EEPROM_demo)

Re: KEA64 EEPROM

star333 — Mon, 05 Sep 2022 14:13:24 GMT

Thanks for your answer.

In the KE02 there is a register named "FTMRH" that there is not in KEA16 or KEA64 .

Can you find a example for KEA64 ?This is similar to KEA16

Re: KEA64 EEPROM

Robin_Shen — Tue, 06 Sep 2022 02:06:39 GMT

Your MCU part number is "S9KEAZN16AM", so please download the S9KEA64Z64M20SF0RM, KEA64 Sub-Family Reference Manual - Reference Manual

You can find the Chapter 18 Flash Memory Module (FTMRH) in this KEA64RM.

Re: KEA64 EEPROM

star333 — Tue, 06 Sep 2022 21:25:13 GMT

Thanks

Mybe I have a problem in keil startup file that dont know the FTMRH .

Re: KEA64 EEPROM

Robin_Shen — Wed, 07 Sep 2022 00:42:04 GMT

Have you download and install the Version: 1.3.0 (2017-05-08) Keil.Kinetis_KEAxx_DFP.1.3.0.pack?

You should be able to find related files and demo example in it.(C:\Users\xxx\AppData\Local\Arm\Packs\Keil\Kinetis_KEAxx_DFP\1.3.0)

Re: KEA64 EEPROM

star333 — Wed, 07 Sep 2022 07:44:37 GMT

Yes I download the pack and install it in the example I cant fined any example for EEPROM . I post the screen shot below.

finally I find my problem of dont recognizing FTMRH by keil my problem was I dont include kea64 start up file in to flash.h file.

And I have another problem now in the KE02 eeprom example all of funtion is for write in to eeprom but how I can read eeporm?

Re: KEA64 EEPROM

Robin_Shen — Wed, 07 Sep 2022 08:20:40 GMT

Sorry. I may not have described clearly. After download and install that pack, you should be able to find related files(startup_SKEAZN642.s \ system_SKEAZN642.c \ SKEAZN642.h\ system_SKEAZN642.h etc.) and demo example(not EEPROM) in it.(C:\Users\xxx\AppData\Local\Arm\Packs\Keil\Kinetis_KEAxx_DFP\1.3.0)

You can find that EEPROM_demo direct read the EEPROM address:

Re: KEA64 EEPROM

star333 — Wed, 07 Sep 2022 08:35:05 GMT

OK I opened the eeprom_demo example .

And from this example :
line:

/* Erase 99th sector */
for( i=0;i<128;i++)
{
EEPROM_EraseSector( i*2 + EEPROM_START_ADDRESS);
}

Erase the sector and line :
for(i=0;i<512;i++)
{
u8DataBuff[i] = (uint8_t)i;
}

/* write data to erased sector */
EEPROM_Program( EEPROM_START_ADDRESS,&u8DataBuff[0],256 );

Is writing to eeprom .

And my question is how I can read eeprom data ?