SL3S4011: Writing with I2C into a locked EPC area

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SL3S4011: Writing with I2C into a locked EPC area

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predi
Contributor II

Hi everybody,

I am currently testing the RFID tag SL3S4011.
I can write with the I2C interfaces into the unlocked EPC area.

But now I’d like to write into the locked EPC area, so that the data is only rewritable with the right password.

So I currently set an access password with the RF interface and locked the reserved memory area.

Afterwards I used the password to lock the EPC area.

Now I’d like to write into the EPC area with the I2C interfaces but I couldn’t find out how to do just that.

Can somebody help me please? :smileyhappy:

Greetings, Dennis

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predi
Contributor II

Hey everybody,

I found out how to unlock the EPC area via I2C.

EPC lock example: 

  • Address = 0x803C
  • Write 0x08 0x00 0x08 0x00

EPC unlock example:

  • Address = 0x803C
  • Write 0x08 0x00 0x00 0x00

A password isn't necessary.

Greetings, Dennis

440 Views
predi
Contributor II

Doesn't anyone have an idea?

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