SPI interface for STM32L476VG

RShiv.1 · ‎2021-03-01

STM32L476VG is the MCU we are interfacing with ST25R3911B using SPI.

what we have understood from some search is that we need RFAL (abstraction layer) to interface with RF HAL.

Then once we integrate RFAL and RF HAL in our system workbench(ac6) project we need to build the integration then use SPI calls to read the register from RFID reader ST25R3911B

we wanted to use ISO-14443A standard to be configured and read the values.

where do we get the basic RFAL work space or code flow so that we shall use in our current project?

Kindly guide us and let us know are we in right path?

RShiv.1 · ‎2021-05-21

Hi BT,

any pointers for us??

Brian TIDAL · ‎2021-05-21

Hi,

Can you measure ST25R3911B VDD and VDDIO?

Rgds

BT

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RShiv.1 · ‎2021-05-21

Hi BT,

voltage L200 is 3.27 V ....voltage at C203 is also 3.27 V...Kindly let us know if these are ok..

thanks and regards

Ravi

RShiv.1 · ‎2021-05-21

Hi BT,

Any obeservation here..kindly let us know.

rgdrs

Ravi

Brian TIDAL · ‎2021-05-21

Hi

Can you check whether R200 is properly soldered on the X-NUCLEO-NFC05A1? can you probe INTR_11 on the board while resetting the MCU?

Rgds

BT

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RShiv.1 · ‎2021-05-21

Hi BT,

R200 is properly soldered and we have checked resistance from CN8.Pin1 to 3911 pin...and it is 220 ohm from CN8pin1 to 3911 pin..

we are not seeing any signal on either side of R200..any observation from here let us know

regards

Ravi

Brian TIDAL · ‎2021-05-21

Hi,

does the crystal start to oscillate during initialization? (probe XTI/XTO while reseting the MCU)

Can you try with another X-NUCLEO-NFC05A1?

Rgds

BT

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RShiv.1 · ‎2021-05-21

Hi BT,

crystal is not oscillating ...we are not seeing any oscillation....we will change this and try..we will try to fecth another XnucleoNFC-05A1..keep you posted.

Thanks for all your support.

regards

Ravi

RShiv.1 · ‎2021-05-25

Hi BT,

In continuation with our effort to get the crystal we have following crystal

can we 13.56 Mhz crystal ,If so what changes need to be done on the STM cube or code..currently we are having only 13.56 Mhz crystal instead of 27.12 Mhz
any changes in Cube Mx or code kindly let us know

Thanks and regards

Ravi

RShiv.1 · ‎2021-05-25

Hi BT,

we are trying to use/put 13.56 Mhz crytal for X-NUCLEO-NFC05A1 board to get the Interrput working..Kindly let us know.

regards

Ravi