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Hello ~!, ​I am bringing up a board using ST25R3916.The main chip is arm9 family and based on freertos.The basic operation has been confirmed, but there is a problem that certain NFCA cards are not recognized well.It does not mean that it cannot be recognized at all, but it is difficult to recognize only at a specific distance (about 3-4 cm).At first I thought it was an RF performance issue, but after wiring the power, IRQ, SPI pins, etc. to my base board and the X-NUCLEO-NFC06A1 board, the results are the same.I've been working on the "ST25NFC_Embedded_Lib_ST25R3916_1.4.0,FreeRTOS_polling" source code.There is no problem origial source code on Nucleo L476, but similar problem can be seen when the priority of the nfcIsrTaskRunner thread is set equal to StartDefaultTask.​------------------------------------------------------------------------------------------------ /* definition and creation of nfcIsrTask */ const osThreadAttr_t nfcIsrTask_attributes = {  .name = "n

Trace code for STD100N107F7 our IQC team would like to know that why the trace code is different between label and component Text , please see the attachedand also could you please let me know the date code of this batch .Thank you so much

I have a need for ST10F273MR-4Q3, but this material has been discontinued, is there a replacement for it, preferably in the same package?

This issue was already mentioned here except now it is on different line. I think it is still there.In EEPROM emulation in the \STM32Cube\Repository\STM32Cube_FW_H7_V1.9.0\Projects\STM32H743I-EVAL\Applications\EEPROM\EEPROM_Emulation\Src\eeprom.c file on line 394 in function EE_ReadVariable(), there isAddress = Address - 32;but there should beAddress = Address - 64;Bug is that data can be interpreted as address and we end up reading incorrect data. The same issue is in examples for Nucleo-H743ZI and Nucleo-H7A3ZI (for the last one it should be 32 instead of 16).Karel

hii do you have evaluation board for L9935Two-Phase Stepper Motor Driver

I am implementing an application when I need to set high a status variable when a button is pressed. I would like to do so via the interrupt routine of the push button. So, in gpio.c I havevoid HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin){ if (GPIO_Pin == GPIO_PIN_0){ PB1_isPressed = 1; } }In the main.c I would like to have a statement like:if (PB1_isPressed ==1){do something}Now my questions are the following:Is this a good practice?where do I declare PB1_isPressed? and how?Sorry for the very basic questions and thank you all for the help in advance :)

Hello,We are able to detect and read NFC tags with ST25R3920, but we have a little problem. When we are trying to read an NFC tag that is in a phone case (credit card, ID card etc.) we can't get a reading at all. Our first guess was that mobile phone is creating a field that interferes with NFC. Could there be something wrong or different in our software to get a reading like this? Should I be doing different configurations on registers like Antenna calibration, External Field Detector Threshold? What are your suggestions for this case?Thanks in advance!Best regards,Furkan

HelloI use the embedded Op Amp in STM32U585VIT3Q to charge a 47uF capacitor.The input of the Op Amp is connected to the output of DAC. The voltage level is 3V.So you can see when the Op Amp begin to charge the cap, the peak current is quite large.I would like to know whether the Op Amp or the Micro could withstand this pulse current Thanks in advance!

I understand that that may be the usual method for the internally handled cases, but here we would like to have them open for discussion.Thanks,JW@Jaroslav JANOS​ https://community.st.com/s/question/0D53W00001uKlwxSAC/i-am-using-the-stm32l051k8u6-and-i-have-set-up-to-use-exti-interrupt-on-pa0-i-also-have-exti-interrupts-enabled-on-pa3-pa10-and-pa11-pa3-pa10-and-pa11-do-generate-interrupts-but-not-pa0-i-include-the-mx-project-is-there-any-possible-reason-for-this

I was given a code to add USB support to the firmware. I am using Stm32CubeMX to generated the boiler plate for the USB. I enabled the USB peripheral and reconfigure the clock setting and regenerate the code. When I try building the fresh project after code generation, it is throwing multiple definition error. I need help how to set the option to regenerate the code without the multiple definition. I thought of adding the USB peripheral manually but I believe the clock configuration will prove challenging for me now. Also the project was done with an older version of CubeMX and I used the migration option offered by CubeMX to migrate the project to the current version of CubeMX Thanks

I would like to upload 2 different ML models to the microcontroller and swap between which one I use for classification (within the microcontroller)However, the code seems only to generate the code for one model properly. Is this correct? or should it generate the code for both?Are there any examples of using multiple models?

Hello,I am running a TouchGFX compiled code and am attempting to display a value from my code onto the LCD screen. I used the Tutorial 2 format for using the Unicode:snprintf function, but I am getting an error."TEXTLED_STATUS_SIZE" was not declared in this scope. "textLED_StatusBuffer" was not declared in this scope.I have included a screenshot of my TouchGFX Designer properties, showing that the name textLED_Status is correct. Additionally, I have included the snippet of my code:void Screen1View::UpdateLED(uint32_t value){ Unicode::snprintf(textLED_StatusBuffer, TEXTLED_STATUS_SIZE, "%d", value); // Invalidate text area, which will result in it being redrawn in next tick. textLED_Status.invalidate(); }I ran Tutorial 2 separately and this issue did not occur.What would cause this?

Hello,I'm implementing an application with touchgfx, i use wildcards with buffer, and two buttons that increse or decrease the value in the wildcard.When i go back to previous screen, and re enter the screen with wildcards, those resets to initial value "0" that i set in touchgfx designer, then when i press the buttons to increase or decrease the value, this updates correctly to the value where it last was set, but only after changing it.How do i keep this values shown after i change and re enter the screen, without them changing to zero?Thanks a lot.

Hello,i need for FCC the parameter "RF Power conducted" of the product ST25R3911b.

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I am currently using an external 16-bit SRAM chip with an stm32h743 MCU Nucleo board, using FMC for memory manipulation of the external SRAM. On Table154 (NOR/PSRAM External memory address, page 806) and accompanying footnote, it is stated that the address issued to the external memory will be shifted by one bit to the right. I have seen this also mentioned in a few forum posts related to external SRAM accesses. However, by playing around with some operations I can confirm that this does not seem to be true.​See the code below:```   uint32_t data = 0x45674567;   *(uint32_t *) (MRAM_BANK_ADDR | 0x10<<1) = data;   HAL_Delay(1000);   printf("First 2 bytes: 0x%4x\n", *(uint16_t *) (MRAM_BANK_ADDR | 0x10<<1));   printf("Final 2 bytes: 0x%4x\n", *(uint16_t *) (MRAM_BANK_ADDR | 0x10 <<1 | 0x02));   printf("Final 2 bytes with bit shift: 0x%4x\n", *(uint16_t *) (MRAM_BANK_ADDR | 0x12 <

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Hi there, I just received the STM32157f-dk2 discovery board, and I just started to dive into the tutorials. I am trying to simply follow the step to just cross-compile and flash the kernel image. When I complete all the steps and reboot the board, the kernel does not start U-Boot 2018.11-stm32mp-r4 (Nov 14 2018 - 16:10:06 +0000)CPU: STM32MP157FAC Rev.ZModel: STMicroelectronics STM32MP157C-DK2 Discovery BoardBoard: stm32mp1 in trusted mode (st,stm32mp157c-dk2)Board: MB1272 Var4 Rev.C-02DRAM: 512 MiBClocks:- MPU : 800 MHz- MCU : 208.878 MHz- AXI : 266.500 MHz- PER : 24 MHz- DDR : 533 MHzNAND: 0 MiBMMC:  STM32 SDMMC2: 0, STM32 SDMMC2: 1Loading Environment from EXT4... OKIn:  serialOut:  serialErr:  serialNet:  eth0: ethernet@5800a000Hit any key to stop autoboot: 0Boot over mmc0!switch to partitions #0, OKmmc0 is current deviceScanning mmc 0:4...Found U-Boot script /boot.scr.uimg1628 bytes read in 1 ms (1.6 MiB/s)## Executing

Hey is there a Factory-Programm to upload if i mess everything up. For the ST25R3911B-DISCO board ?I want to be able to use The GUI again.

Hi,I am working on a project where I need to add an info bar above multiple screens containing a digital clock.The digital clock is sourced by the rtc of the mcu. For one screen I read the current time and date with HAL_RTC_GetTime/HAL_RTC_GetDate inside the model and send it through the MVP. In future I plan to use the xQueueSend/Receive.From what I understand I can make my own container containing all parts of the info bar. But I struggle to follow the concept of updating the parts in the container. How do I include the code to update the container over multiple screens, is there a example for this?

All,BackgroundChip: ST25R3914Library: RFAL for ST253911BI am currently working on a project that uses the ST25R3914 nfc chip and would like to implement the Automatic Antenna Tuning (AAT) feature. After looking at the data sheet, it states that chip can perform antenna tuning automatically by sending it the direct command Calibrate Antenna. Great. I then looked through the RFAL library to see if there was an API function I could call that would execute this command, and I found rfalCalibrate. This makes it easier to implement because I can now call the function mentioned above and the antenna will be tuned, but I had a few questions:When should I call this function? Should it be done after every tag that is detected?How often should it be called? Is there a configuration variable/register that needs to be set to get this feature to work?Your expertise is greatly appreciated here. Thank you in advance!Adan

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 of the Stream mode definition register, I've been able to configure the st25r3916 for either bit rate. The datasheet, however, offers "# of pulse" values of 1, 2, 4, or 8. I believe that it should read 1, 2, 4, or 16. Am I correct?Best,Oliver

Hello, We are trying to make an NFC reader for door access control. Reading NFC tags and Android phones are as expected. But for Apple product we have to support Apple VAS. I found a similar question https://community.st.com/s/question/0D53W00001MY8kJSAT/apple-vas-compatibility but I have some gray areas in my mind.Is ST25R3916 the only product that support Apple VAS? Is a newer product for support Apple VAS?I checked https://github.com/stm32duino/ST25R3916 but I found nothing about Apple VAS. Is there a sample code to help the implementation?3. I also checked the datasheet https://www.st.com/resource/en/datasheet/st25r3916.pdf but when I searched for VAS nothing appeared. I have no idea what to do. Would you please give me an overview about the steps. Where should I start?TNX

The readme.txt in the STM32WB Middleware WPAN folder mentions that it is possible to get the clusters library sources. How can this be managed?