About HABIJ.1

HABIJ.1 · 2024-07-03

Hi,I am working with a ST25DV64. I succeeded reading and writing via I2C. I can also read via RF interface. But I have not succeeded writing via RF interface.I checked the static registers and there is no write protection, I have one area and RFA1SS...

HABIJ.1 · 2024-03-18

I got this assembly code (see below) in an ST example code on secure boot and and I don't understand some lines :why do we have to push R1 five times in a row?why is LR set to 0xFFFFFFF9? That is causing a hard fault at runDoes anyone have better un...

HABIJ.1 · 2024-02-14

I can't find the page size of STM32401RE nucleo flash memory in the reference manual. Does anyone have the information?Thanks

HABIJ.1 · 2021-03-10

Hello,I am trying to write data in .txt file on a USB pendrive at a certain frequency (in the while 1 loop) using STM32L496ZG as the USB host in the Mass Storage Class (MSC) configuration.I succeded writing to the .txt file in the first iteration, b...

HABIJ.1 · 2021-01-06

Hello,I am searching for the input/output impedances for my STM32L476RG microcontroller and I can't find any information in the microcontroller datasheet or else where on the web. Are those values given in any documentation? If not, can they be calcu...

HABIJ.1 · 2024-07-09

Thank you @Brian TIDAL and @Ulysses HERNIOSUS for the explanations and indications.

HABIJ.1 · 2024-07-08

Hi @Brian TIDAL Thanks for your answer. I can now pair to bluettoth devices using NFC and I understand better NDEF and NFC in general.I have some further questions for better understanding :What is the meaning of T and L in the TLV message? AN4911 d...

HABIJ.1 · 2024-07-04

I dumped the tag memory for the 2 tags : the one that allows BT NFC pairing and the one that doesn't allow BT NFC pairing. And it seems that the tag which doesn't allow BT NFC pairing was missing a header (highlighted red in the attached image). Is t...

HABIJ.1 · 2024-07-04

Thanks for the reply.Well, to give all the context : I suspect RF write problem in a bluetooth NFC pairing I am trying to implement.For that, I have a standalone ST25DV64 IC connected on a custom board with a bluetooth module. I would like to do a b...

HABIJ.1 · 2024-03-26

Thanks for the tip, I read Joseph Yiu's book and understood better the call gate mechanism.I still have a problem with the line 21 :MOV LR, #0xFFFFFFF9 /* set LR to return to thread mode with main stack */ For a reason that I don't understand , #0xFF...

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RF Writing is not working on ST25DV64

Assembly code to launch an application

Page size of STM32401RE nucleo flash memory

How to have more than one access to a USB pendrive using STM32L496ZG as USB host

where the output/input impedances can be found or can they be calculated?

Re: RF Writing is not working on ST25DV64

Re: RF Writing is not working on ST25DV64

Re: RF Writing is not working on ST25DV64

Re: RF Writing is not working on ST25DV64

Re: Assembly code to launch an application