NFC中的主题 Re: HITAG S not responding to UID Request

HITAG S not responding to UID Request

Felix0209 — Fri, 12 Jul 2024 10:16:19 GMT

I am designing a custom hardware using stm32 and I have got communications with the HTRC110 working but when I try and send any of the UID Request commands specified in the HITAG S data sheet I no response that looks like any of the coding responses. I have set up my code to receive the anti-collision coding but it isn't picking up anything. I have attached to photos below of my command

yellow - antenna

blue Dout

Re: HITAG S not responding to UID Request

Felix0209 — Fri, 12 Jul 2024 10:21:58 GMT

I also know the ID from an off the shelf module so I can send the select (UID) command and it looks more promising with the SOC but still has no data

Re: HITAG S not responding to UID Request

EduardoZamora — Fri, 12 Jul 2024 21:37:37 GMT

Hello @Felix0209

Hope you are doing well.

Could you please confirm that you have followed this App Note: Read/write devices based on the HITAG read/write IC HTRC110 for the design of your reader?

Is your development based on the Control library HTRC110 we provide? Unfortunately, there is no example for HITAG S, but you could use this library as a reference.

Regards,
Eduardo.

Re: HITAG S not responding to UID Request

Felix0209 — Tue, 16 Jul 2024 09:20:23 GMT

Yes I followed that app note and yes i used the library as a reference

Re: HITAG S not responding to UID Request

EduardoZamora — Wed, 17 Jul 2024 17:48:07 GMT

Hi,

By any chance, did you manufacture your device based on our HITAG S IC or is it a product from a third-party?

Regards,
Eduardo.

Re: HITAG S not responding to UID Request

Felix0209 — Thu, 18 Jul 2024 12:06:30 GMT

Its this tag

https://xpressrfid.com/product/hid-logi-tag-120-lf-hitag-s-2048-no-logo

Re: HITAG S not responding to UID Request

EduardoZamora — Thu, 18 Jul 2024 18:45:39 GMT

Hi,

Since this is an end product from a third-party, I would recommend you contacting the product manufacturer for further support on this part.

I apologize for the inconvenience this might cause you.

Regards,
Eduardo.

Re: HITAG S not responding to UID Request

Felix0209 — Fri, 19 Jul 2024 16:21:30 GMT

I finally solved the problem by tweaking the electrical side of things - making sure coil - end is at about 140V. also I changed the timings slightly of the command - using cursors and checking data sheet

Hope this helps anyone with the same problem