About OSilv.1

OSilv.1 · 2022-10-26

Hello,I've designed a board with the MCU above. The board has the following peripherals/configurations:-i2c-spi-gpioA-gpioB-EXTI and timer interrupts-serial wire debug-timers (tim2, tim21, tim22)The board has some ICs that are all in their lowest pow...

OSilv.1 · 2022-10-24

According to the ST25DVi2c datasheet, a high bitrate encoding has four subcarrier pulses (followed or preceded by 9.44us of unmodulated time) to designate a 0 or 1. A low bitrate uses 16 pulses and 37.76us of unmodulated time.By changing bits 3 and 4...

OSilv.1 · 2022-10-19

After I write to the FIFO, I read the FIFO to check if the bytes were property transferred (I understand that I cannot read and then transmit, this is just for debugging). I have a strange issue where the number of bytes in the FIFO are exactly half ...

OSilv.1 · 2022-04-14

Hello,I have a nucleo-nfc06a1 board that I would like to use for wireless charging and communications to a st25dvi2c tag. On the tag side, I have a rectifier bridge that supplies a battery charger. The resonant frequency of the tag antenna has been s...

OSilv.1 · 2022-03-29

Hello,I've changed the impedance matching network on the NFC06A1 such that the system is resonant at 13.56MHz with an impedance of 2.6 ohms. The reader is in 5V mode with the regulator display register measuring 4.3V at VDD_RF. I have set the output ...

OSilv.1 · 2022-10-26

Hi JW,I've removed all code such that SystemClock_Config(); and HAL_Init(); are the lines run before an empty loop. Here is my results:4mhz = 16031mhz = 12170.5mhz = 1150If I add the gpio initialize and set the board ICs into their lowest power mod...

OSilv.1 · 2022-10-25

Thank you for your reply, Ulysses. Page 159 of the st25dvi2c datasheet outlines the two "data rates", one is "low" and the other is "high". This is the terminology the datasheet uses. They are used for regular and fast commands respectively. I unders...

OSilv.1 · 2022-10-20

This was it. Working now with CPOL = Low and CPHA = 2 Edge.Thank you!

OSilv.1 · 2022-04-12

If anyone could answer this question it would really help further my project along. Or perhaps if someone could recommend a good resource on antenna design for wireless charging at 13.56MHz that could be equally as helpful. I've tried many different ...

OSilv.1 · 2022-04-06

Hi Travis,My ultimate question is this: What needs to be done to the NFC06A1 such that the antenna outputs maximum power for wireless charging, considering its current limitation of 350mA and 5V supply? This includes:(1) key register configurations(2...

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STM32L051K8U6 - Larger current consumption scaling with clock than in datasheet

Stream mode definition register: typo?

ST25R3916 FIFO read strange issue (Nucleo-L433RC-P & X-Nucleo-NFC06A1)

NFC06A1 maximum output power for wireless charging

Tips for triggering i_lim? (NFC WLC)

Re: STM32L051K8U6 - Larger current consumption scaling with clock than in datasheet

Re: Stream mode definition register: typo?

Re: ST25R3916 FIFO read strange issue (Nucleo-L433RC-P & X-Nucleo-NFC06A1)

Re: Tips for triggering i_lim? (NFC WLC)

Re: Tips for triggering i_lim? (NFC WLC)