ST25 NFC/RFID tags and readers

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Resolved! How to deal with I2C Communication for the slave x-nucleo-nfc07a1 in which ST25DV64KC incorporated and is interfaced with STM32WB55RG?

Hi Sir/Madam, I am working with I2C in x-nucleo-nfc07a1 where ST25DV IC incorporated interfaced with Nucleo-WB55 board, what is the slave address(device address) for this?I am firmware engineer, I have I2C Scanning program wherePreviously, I work wit...

BT.2 by Associate II
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Resolved! ST25R3917 doesn't commnicate on the I2C

ST25R3917 doesn't commnicate on the I2C (Address 0x50) it seems like the chip doesn't start. Maybe a problem with the crystal?- Drawn current is 50uA- Signal on MCU_CLK is a 32.5kHz Squarewave- IRQ line stays lowI assume that the capacitance on the 2...

Resolved! I2C errors with two slave devices

Hi,I have ST25DV64KC and another ADC chip connected to STM32L071RZT6 on I2C1. I noticed that reading GPO1 or other registers or MB by HAL_I2C_Mem_Read_IT() fails from time to time. Completions of operations are often timeout (somehow read timeouts mo...

Lex by Associate III
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Resolved! How to deal with I2C Communication for the slave x-nucleo-nfc07a1 in which ST25DV64KC incorporated and is interfaced with STM32WB55RG?

Hi sir, I am working with I2C in x-nucleo-nfc07a1 where ST25DV IC incorporated interfaced with Nucleo-WB55 board, what is the slave address(device address) for this?I am firmware engineer, I have I2C Scanning program wherePreviously, I work with Tem...

BT.2 by Associate II
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  • 5 replies
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Resolved! Security session not opening on ST25DV tag

I'm trying to open a security session with an st25DV tag. I followed the manual and I am sending a message to present the default password (8 x 00h + 09h command + 8 x 00h) using HAL_I2C_Mem_Write. I already looked at the signal with a logic analyzer...

CFred.1 by Associate
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  • 1 replies
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Resolved! HAL_I2C_Mem_Read_DMA fails to read

Setup in use:P-NUCLEO-STM32WB development board.X-NUCLEO-NFC04A1 expansion board with software pack ( NFC 4.2.05) Added : DMA support for I2C , .ioc cubeMX image attached.The issue is that I cannot read the ST25DV ID via I2C DMA read. I simply do not...

0693W00000Y7AjGQAV.png
DS.4 by Senior II
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Resolved! Wrong message length reported by MB_LEN_Dyn

While doing an FTM transmission from RF to I2C and reading the MB_LEN_Dyn register, it will always report a length which is 6 bytes more (or 7 after the increase by one in my code) than the actual message length. Below is the code of the ISR handling...

NDvas.3 by Associate III
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Resolved! Change value on MB_WDG disable I2C.

Hello,I have a problem with the ST25DV04KC-IE.In the datasheet the register MB_WDG (000Eh) must have a factory value of 0x03 but my chips have 0x1a. Bits 3-7 are RFU in the datasheet. Do you know why there is a difference?The real problem is that I t...

jbie by Associate II
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  • 3 replies
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