S32GのトピックRe: PMIC PF8200

PMIC PF8200

iaboelen — Thu, 07 Sep 2023 13:14:14 GMT

Hello

I am using PMIC PF8200 with cortex M7, i can read data from the PMIC but when i try to write ,noting is written , i am using CRC8 and i can calculate it correctly and it matches with the CRC from PMIC in case i am reading , but when i send request to modify ant register the flag for CRC (CRC_I) becomes 1 indication to a CRC flier.

the format i am sending is (REG_ADD , Data , CRC)

Did i miss something ?

Re: PMIC PF8200

diazmarin09 — Thu, 07 Sep 2023 18:41:18 GMT

Hello iaboelen,

I hope all is great with you. Thank you for using the NXP communities.

Could you please review the questions below for a better understanding?

Do you mean the I2C CRC verification?

When this feature is enabled, a selectable CRC verification is performed on each I2C transaction. Could you please confirm that it is enabled (OTP_I2C_CRC_EN = 1)?

Are you trying to perform an I2C secure write? When OTP_I2C_ SECURE_EN = 1, the secure write is enabled. I guess you are trying to write the secure registers.

Regards,
David

Re: PMIC PF8200

iaboelen — Sun, 10 Sep 2023 09:17:24 GMT

Hello,

the I2c verification is on so that i am using CRC calculations ,

also i am not writing on secure write i am trying to write on normal read write (R/W) Reg.

Best Regards;

Re: PMIC PF8200

iaboelen — Sun, 10 Sep 2023 09:18:22 GMT

Hello,
the I2c verification is on so that i am using CRC calculations ,
also i am not writing on secure write i am trying to write on normal read write (R/W) Reg.
Best Regards;

Re: PMIC PF8200

diazmarin09 — Mon, 11 Sep 2023 19:05:13 GMT

Hello iaboelen,

Once again, thank you for using the NXP community.

As mentioned on the case, I do recommend reviewing the application note AN13107.

At chapter 2, you may find useful information about the I2C-bus overview. Are you able to perform an I2C bus write with CRC verification operation (chapter 2.4.1)?

Please let me know if this material is useful for you.

Regards,

David

Re: PMIC PF8200

iaboelen — Sun, 17 Sep 2023 09:27:57 GMT

Hello ,

i got all information i need , thanks for your support.

Best regards