TMS570 EEPROM Single Error Correction Issue

Jonas Heffe66

Other Parts Discussed in Thread: HALCOGEN

Hi there,

I wrote some Code where I access the pre-programmed single bit and double bit errors in OTP (see). I set the threshold for single bit errors to 3 in the EE_CRTRL2 register.

By pointing to the location of the single bit error the ErrorPinStat register in the ESM is dropping to low level. Therefore the error LED will be on. I expected this behavior after reaching the set threshold. Why is a correctable error causing the ErrPinStat register to be low when the threshold is not reached?

I attached my project files which were created with HALCoGen and compiled/debugged with Code Composer Studio 4.

Thanks in advance

Jonas

ECC_EEPROM.zip

over 13 years ago

0 Pratip Kumar over 13 years ago

TI__Intellectual 2285 points

Jonas,

I had a quick look at your code.

Just to help me out , could you send a snap shot of the CCS4 debug memory with values from EEREG (0xFFF87300U) registers.

0 Jonas Heffe66 over 13 years ago in reply to Pratip Kumar

TI__Prodigy 235 points

Hey Pratip,

here is the snap shot. The memory view above shows the memory before the error was triggered, below after execution of the for loop (i=1).

edit: I found the solution: I misinterpreted Bits9 and 10. They should just be activated when a single error should generate an error event every time. I thought I have to activate them to make the detection of single errors work generally. So this thread can be closed.

Regards
Jonas

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TMS570 EEPROM Single Error Correction Issue