ST25R3911B / NFC reader / No-response timer register

[VMana.1]

I would like to increase no-response time by a few ms instead of 64/fc (4.72us) or 4096/fc(302.08us?), say 100ms(milliseconds). What should be the values in 0Fh, 10h and 11h registers.? I see bit4 in 0Fh register mentions time configuration in milliseconds configuration but don't how to use.

Host uses rfal API.

Thank you for your support!

Thanks,

Veera

[Brian TIDAL · Accepted solution]

Hi,

the rfalTransceiveBlockingTxRx() and rfalTransceiveBlockingTx() APIs in the RFAL have a fwt parameter (Frame Waiting Time in 1/fc). This will set the No-response timer registers accordingly.

Can you elaborate about your use case (e.g. which technology A/B/F/V/P2P) and explain why you need to increase the non response timer?

Rgds

BT

[VMana.1]

Hi,

Sorry I missed your response somehow I did not receive a notification though.

We've an application level security added and ran into some issues at the RF transport. To debug, I want to try to extend the non-response timer to a few milli seconds. We sorted out the issue. Thank you for your support.

Thanks,

Veera