AURIX™ Forum Discussions

[SalinaSJames]

First question : How can I disable ECC safey error in infineon TRICORE TC39XX

I used to disable it in TC27 using this cocde:

/* Deactivate ECC safety errors */
Mcal_ResetENDINIT();
FLASH0_ECCRP0.B.ECCORDIS |= IFX_FLASH_ECCRP_ECCORDIS_MSK;
FLASH0_ECCRP1.B.ECCORDIS |= IFX_FLASH_ECCRP_ECCORDIS_MSK;
Mcal_SetENDINIT();

now I'm tying to disable it on TC39XX with this code DMU_HF_ECCC.B.ECCCORDIS = 0x01; but it's not working

Should I set PECENCDIS and DECENCDIS flags ?

Second question when enabling ECC, why can't I read the flash memory ? I thought it will just not use ECC checking ?

[dw]

Dear salina,

Please check if Set FLASHCON1.B.MASKUECC = 01B will fix your problem.

In AURIXT3XX_um_part1_v2.0.pdf, you can find FLASHCON1 MASKUECC's description.If a local PFLASH uncorrectable ECC error occurs, then the error is globally disabled for any requesting master reading the local PFLASH.

dw

[MoD · Accepted solution]

DMU_HF_ECCC is the register for DF0. The register for PFx is inside of CPUx. As already described, e.g. for PF0 set CPU0_FLASHCON1.B.MASKUECC = 01B

For second questions, if the flash is erased and not programmed then no valid ECC information is available which result in an uncorrectable ECC error.