ST25R200 without IRQ

Mark12 · ‎2025-07-29

Is it possible to use RFAL with ST25R200/R100 without utilizing the additional IRQ / EXTI Line? So just the SPI connection?

Brian TIDAL · ‎2025-07-29

Hi,

I suggest referring to the RF/NFC abstraction layer (RFAL) user manual UM2890 for detailed information about the ST25R reader interrupt management.

Can you share the reason for not using the interrupt line?

You can try to enable ST25R_POLL_IRQ.

Rgds

BT

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Mark12 · ‎2025-07-29

Thanks for the Info. I checked it and tried with, ST25R_POLL_IRQ. From my tests and by looking at the code it seems that the Pin connection itself is still mandatory. The difference is just if the pin status is read either by irq or by polling. But the pin itself being present is still mandatory?

Ulysses HERNIOSUS · ‎2025-07-29

Hi Mark12,

for our code the pin is necessary. You could try patching it to always read interrupt status register, but to date not foreseen.

Ulysses