RFID problem

Sasha

Hi Guys,

What’s wrong with the code in the attachment?

Problem is that when use the OSC4MHZ settings in the device section, chip does not see tags from data table like authorized, seems to me that always goes to the No_Tag method but when I change OSC4MHZ to OSCXT2 settings, in this case work fine but in the debug mode only, probably because use oscillator from SX-key, True ?.
Is it possible to use RFID reader with this code and internal oscillator?
I use RFID_Security samples from SX/B tutorials with little modification.

Thank you.

P.S. “Sorry for my English.”

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RobotWorkshop

Can you describe how your board is wired? Are you using a 4Mhz resonator, 4Mhz Crystal, or the Internal RC for the clock? Will it only run with the SX Key attached or have you tried it stand alone? We need some more details to provide a decent answer.

Robert

Sasha

Thanks Robert,
I use Sx Tech board with SX-Key interface and no external oscillator or crystal or resonator, internal only and yes, it only run with the SX Key attached.

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Bean

The internal oscillator (OSC4MHZ) is not accurate enough for serial communications. That is why it doesn't work.

Bean.

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Sasha

Bean,
That mean that with external oscillator (even 4MHz) will work just fine as is in the my source code.
Thank you!

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JonnyMac

Yes, no problem -- but as Bean points out, you _must_ have an external oscillator when doing timing-critical processes like SERIN. I know that program works with a resonator because I wrote the original version.

Sasha

Thanks Jonny, like I post earlier I just modified Origin version and big Thanks again for it.

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