Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
Is there any information available on recommended loop filter values for 50kHz and 25kHz PLL reference frequencies? We have info for 100 and 125kHz (see attached). Barring that, the phase detector + charge pump as a unit (V/ radians) would be helpfu...
In the schematic for EVAL Kit why we have used Inductors and why we have given Buffer positive supply, { internally regulated } to RF Output of both Internal Amplified and also for Low power Amplifier. PFA image attached.Secondly why they have used ...
I Use STM32CubeExpansion_NFC6_V1.1.0 for emulate card with NUCLEO-L053R8 and X-NUCLEO-NFC06A1.I Try NDEF URI card emulation with sucess.I don't find a example code for NDEF Text emulation card. Does anyone have a example code for NDEF Text Emulation...
Is it possible to receive a GPO pulse when an NDEF message is being read by an NFC reader, such as a smartphone? I thought it was possible by configuring the GPO field to RF busy (0x6X) and connecting the GPO port to a GPIO port of my MCU. However, t...
I'm using the ST25R3911 kit, to create code then read continuos information by ISO14443A protocol.I have another board ( SIC-4310) then send me continuos information, when I trying to read I lost some packages, for example, I send 64 bytes each packa...
I developed a board with the same carrier cancelation circuit as the ST25-EVAL board, but I'm having some different measures regarding the reception power. I would like to know if it is correct or if something is wrong.EVAL measurements :Ptx = 28.95d...
Hi,I have an ST25R3911B-DISCO and have discovered that UART and I2C are not supported on the loaded firmware through searching Google on how to use the interfaces.I am wondering if there have been any updates in the last two years on this subject.If ...
Hello to all!I have boards - NUCLEOL476RG and X-NUCLEO-NFC06A1 with project "STM32L476RG-Nucleo_PollingTagDetectNdef" running on it.And got an error when trying to read any tag:When debugging program i found that error, its here in the code, doesn't ...
I'm using a X-NUCLEO-NFC05A1 (on a Nordic nrf5340 dev kit board), and want to enable/test Capactive Wakeup. Before enabling, I'm trying to perform direct command 0xDD Calibrate Capacitive Sensor. According to the data sheet, this should be performe...
I'm trying to read the information from another RFID card, the idea is to send a request for it and receive the answer 00010203040506070809, the card that is sending this info is SIC4310-full using the ISO14443 protocol.I tried to use the function "m...