TMS320F28069: How to Implement IEC60730 using C2000

Hello,

SY Yoon said:

He told that the F2806x couldn't support periodic CRC check of flash while running application.

So he used to implement to check the CRC only once when booting up, but now end customer requires periodic CRC check of flash.

Does the F2806x really not support periodic CRC check of flash?

Out of curiosity, do you know who he asked or if this was on E2E? I can try to reach out to that person and confirm this information, otherwise I will reach out to another expert I know of.

SY Yoon said:

If not, does TI support an example or guide?

Likely if there is not support for periodic Flash, the customer will need to refer to something like the VCRC of another type of CRC which is present on the device (but may not be periodic for Flash as the user intends).

SY Yoon said:

Does F280013x, F28003x support periodic CRC check?

And could I get PDF file of Diagnostic library users guide for F280013x and F28003x

I will ask the device experts to see if they're aware of this.

Best regards,

Omer Amir

SY Yoon said:

Does the F2806x really not support periodic CRC check of flash?

No. This is not natively supported by the device. Customer has to implement this by software. 

SY Yoon said:

If not, does TI support an example or guide?

Please take a look at this post: https://e2e.ti.com/support/microcontrollers/c2000-microcontrollers-group/c2000/f/c2000-microcontrollers-forum/1245370/tms320f280200-need-to-provide-ul-iec-en-vde-certification-report

SY Yoon said:

Does F280013x, F28003x support periodic CRC check?

The Flash memory in those devices has ECC, not CRC.

Hi,

Hareesh Janakiraman said:

No. This is not natively supported by the device. Customer has to implement this by software. 

 Could I get software examples how to implement periodic CRC check of flash?

 Customer's products are timing-sensitive application.

 We are wondering how to check the CRC in the real-time signal chain. (sensing-processing-control loop)

There are concerns that periodic CRC checking may break the real-time signal chain.

Hareesh Janakiraman said:

The Flash memory in those devices has ECC, not CRC

Does this mean new devices (F280013x, F28003x) can't check CRC of flash?

Hi,

Omer Amir said:

Out of curiosity, do you know who he asked or if this was on E2E? I can try to reach out to that person and confirm this information, otherwise I will reach out to another expert I know o

As a result of the customer's test, it was concluded that periodic CRC check was not possible.

But I am wondering if he has failed to implement the CRC check of flash or if it is really impossible.

SY Yoon said:

Could I get software examples how to implement periodic CRC check of flash?

We don't have such examples, unfortunately. Customer has to write their own.

SY Yoon said:

There are concerns that periodic CRC checking may break the real-time signal chain.

Yes, it is possible. 

Would customer be willing to use our newer generation devices like TMS320F28377S? It is far more powerful than the F28069 and costs the same. Besides it is also safety-certified.

SY Yoon said:

Does this mean new devices (F280013x, F28003x) can't check CRC of flash?

The new devices support ECC in hardware. If customer wants CRC, they have to implement it by software.

Customer has no plans to change to F2837x.

The customer thinks that the main device of his product, F2806x, is expensive, so he is considering cheaper parts for new projects.

The parts he applied to the new project are F28003x and F280013x.

He planed to replace F2806x with F280037 and F2800137 in the future.

However, F280037 and F2800137 don't support IEC 60730, so he plan to look for devices from other supplier such as renesas.

Thanks.