About LKUMA.1

LKUMA.1 · 2020-08-16

Hello ST team and Guys here. We have a new project that requires us to measure the a position of a moving object with a range of 100 mm with an accuracy of +- 1 mm. I was wondering if by attaching a NFC tag to the object and a reader with a similar ...

LKUMA.1 · 2020-05-27

I am looking for the microcontroller firmware and the main file used in ST25RU3993 EVAL KIT. ST25ru3993 STUHFL SDK pacakge\Firmware\Eval\? Am i in the right folder ? There is STUHFL_demoEvalAPI.c in the Applications folder but i am not sure if this...

LKUMA.1 · 2020-05-20

Hello ST community We are making a customized PCB as an RF front end based on ST25U3993 (but without carrier cancellation circuit and log ampifier). We would use the eval kit with the ST GUI for tag reading. . My question is 1.) I would connect SPI ...

LKUMA.1 · 2020-03-17

Hello ST and users In the ST25RU3993 EVAL boared, the micro controller interacts with the RFID reader chip through SPI interface and control signals ( 93_signals) - altogether six data lines in total. The SPI interface is also shared with a carrier c...

LKUMA.1 · 2020-05-29

Thanks Nick for confirming.IN principle, this would imply removing R13, wire-grounding the EN in J12 and making a direct wired connection from the MCU (Pin 43) to EN on our custom PCB.So no change needed in the FW/GUI. 1.) Additionally i would like t...

LKUMA.1 · 2020-05-27

Hi NickI had a similar question, instead of disabling the on-board uC, I wish to disable the on-board RFID chip. We are designing our RF FRont end based on STRU3993 and connect its SPI to eval board SPI. There is no pull up/down resistors that would...

LKUMA.1 · 2020-05-27

Hello Alternatively, 1.) do i need to keep NCS pin of the board RFID chip (on the eval board) high to disable it's SPI ? 2.) I think sharing two RFID chips on the same SPI and controlled by the eval board- microcontroller should also be possible b...

LKUMA.1 · 2020-03-18

Hi UlyssesSorry for the confusion. I was indeed referring to ST25RU3993. We plan to make a customized PCB similar to the schematic of the the eval kit. We simply the circuitry by eliminating the 20 db coupler and power detector and possibly also the ...

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NFC tags/ reader system for position sensing

Source file in STSW-ST25RU-SDK

Disabling on-board RFID chip ST25RU3993 on the eval board

identical RFID chip at external interface on ST25RU3993 EVAL board

Re: How to port the ST25RU3993 firmware to a stand alone MCU board?

Re: How to port the ST25RU3993 firmware to a stand alone MCU board?

Re: Disabling on-board RFID chip ST25RU3993 on the eval board

Re: identical RFID chip at external interface on ST25RU3993 EVAL board