RF-HDT-DVBB: example for writing a block to RF-HDT-DVBB

Volker Pfau

Part Number: RF-HDT-DVBB

The write Block command do not work under Inventory.

So a command for writing to block1 like 0x02,0x21, 0x01, 0x33,0x34,0x35,0x36 dosen't work.

As I understand I have to change the request Flag. But if I do that,I get a error message. Is the protocol then a other?

What do I have to send for writing a block?

over 5 years ago

0 Ralph Jacobi over 5 years ago

TI__Guru*** 128105 points

Hello Volker,

You need to use the Option Flag.

Please see this prior post: e2e.ti.com/.../2398921

0 Volker Pfau over 5 years ago in reply to Ralph Jacobi

Prodigy 30 points

Hello Ralp,

thanks, I have read this link before I wrote the mail.

e2e.ti.com/.../2398921

And I have tested to set the option and the adressed flag but this dosen't solve the Problem. Because I think the Option flag alone can't help.

And if I set the adressed flag the protocol is a other. And I don't know what the different of this protocol is. So if someone have written to this chip please show me a example for the command perhaps to write to block 1.

0 Ralph Jacobi over 5 years ago in reply to Volker Pfau

TI__Guru*** 128105 points

Hello Volker,

When using the Option Flag, the reader must issue an EoF frame 10ms after the command has been sent out. That may be what is missing.

What reader/writer device are you using? The issue will be on the reader side to ensure it is handling the protocol requirements correctly.

As far an example goes, our RFID reader example handles this operation correctly, you can get the source code from: www.ti.com/.../sloc297

0 Volker Pfau over 5 years ago in reply to Ralph Jacobi

Prodigy 30 points

Hello Ralph,

there was a error on my protocol. Now it works. Thanks.

Volker

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RF-HDT-DVBB: example for writing a block to RF-HDT-DVBB