ST25R3916 - NDEF tag emulation and RSSI

[oga83]

Hello,

I'm using RFAL with the ST25R3916 to emulate NDEF tags.

The tag emulation works perfectly.

Now, I'd like to get the RSSI when the emulated tag is read.

My problem is that rfalGetTransceiveRSSI() and even the low evel st25r3916GetRSSI() always return 0, wherever I use them (after device is activated, after or before data exchange, ...).

These functions return a correct RSSI value when the ST25R3916 is used as a reader; but not when it's used as a tag emulator.

Any idea how I can get the RSSI when the emulated tag is read ?

Thanks !

[Ulysses HERNIOSUS · Accepted solution]

Hi,

in card mode you can just measure the amplitude on RFI using e.g. rfalChipGetLmFieldInd()/rfalChipMeasureAmplitude()/st25r3916MeasureAmplitude()/ST25R3916_CMD_MEASURE_AMPLITUDE.

BR, Ulysses

[oga83]

Hi Ulysses,

Thank you, rfalChipMeasureAmplitude() works !