i.MX ProcessorsのトピックGetting Unique ID

Getting Unique ID

kishorepoojari — Tue, 16 Jun 2015 06:06:42 GMT

Hello All,

We are using i.mx233 processor for our handheld device, now we have to assign ID (Serial number) to the device.

How to get processor serial number ...? Is it stored in any where....? , If we get processor number we can use that number as a reference number

for unique ID.

Please help me sort out this issue.....?

Regards,

Kishore P

Re: Getting Unique ID

SergioSolis — Tue, 16 Jun 2015 20:27:36 GMT

I suggest to make use of OTP bit in iMX233. The i.MX23 does have a unique key made up of the bits from registers HW_OCOTP_OPSn.

You will find further information on this feature, including how to read it, on Chapter 7 [On-Chip OTP (OCOTP) Controller] of the i.MX23 Applications Processor Reference Manual.

http://cache.freescale.com/files/dsp/doc/ref_manual/IMX23RM.pdf

Re: Getting Unique ID

kishorepoojari — Thu, 18 Jun 2015 06:55:18 GMT

Hello SergioSolis ,

Thanks for the above input , current we are able to read values of HW_OCOTP_OPSn[0..3] registers .

But we unable to interpret of each values are used for (Eg : Serial Number or part number or version ).

Please clarify .....?

Regards,

Kishore P