RAMCFG_MxCR ECCE bit not set even after SRAMxECC is enabled(0) in FLASH_OPTR

[harisuvarna]

Hi,

I have enabled option bit SRAMxECC is in FLASH_OPTR by following sequence mentioned in datasheet to enable SRAM ECC, However RAMCFG_MxCR ECCE still shows as 0(disabled). Please do the needuful.

[Imen.D]

Hello @harisuvarna 

Check the STM32U5 Errata, you may have the same condition described in section: SRAM ECC error flags and addresses are updated only if interrupt is enabled.

[harisuvarna]

Hi Iman,

Thank you for the response. I do enable RAM ECC interrupts in register RAMCFG_MxIER.  

Section 6.3.2 of ST User Manual (RM0456) says following

But ECCE bit is not automatically set even though SRAM ECC is enabled in FLASH_OPTR. 

Regards,

Hareesha

[harisuvarna · Accepted solution]

ECCE bit in register RAMCFG is setting to 1 after I enable clock for RAMCFG module in RCC register 

Thanks,

Hareesha