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Hello,I'm trying to work with the ADC of the STM32L433 microcontroller. The Reference manual (RM0394) on page 448 it says : The following formula gives the actual VDDA voltage supplying the device:VDDA = 3.0 V x VREFINT_CAL / VREFINT_DATAWhere can I found the VREFINT_CAL value, I'm not able to find the address on the RM ? Thank youRiccardo

Hello,I will use stm32g473VC ADC2 working together with DMA.I configure ADC2, Input3 at Pin PA6 and DMA2 Channel1 to read 100 Samples from ADC after Start.At first call after cpu reset I receive the expected result:ADC:Value 4034 for Items 0->99, as you can see in following output. (what is a correct value)Item0: 4034Item1: 4034Item2: 4034Item3: 4036Item98: 4034Item99: 4034But at the 2nd and following  starts of DMA, the first received value is 0.Item0: 0Item1: 4035Item2: 4035Item3: 4035Item98: 4035Item99: 4035At every start I call the following functions:LL_ADC_ClearFlag_EOC(ADC2);LL_ADC_ClearFlag_EOS(ADC2);LL_ADC_ClearFlag_EOSMP(ADC2);LL_ADC_ClearFlag_OVR(ADC2);LL_DMA_SetDataLength(DMA2, LL_DMA_CHANNEL_1, 100U);LL_ADC_REG_StartConversion(ADC2);LL_DMA_EnableChannel(DMA2, LL_DMA_CHANNEL_1);while (LL_DMA_GetDataLength(DMA2, LL_DMA_CHANNEL_1) > 0U){}LL_ADC_REG_StopConversion(ADC2);LL_DMA_DisableChannel(DMA2, LL_DMA_CHANNEL_1);Comparing ADC2 and DMA registers at first and

I previously posted here when I was having issues with my STM32F407 board that I have configured as a HTTP server.https://community.st.com/t5/stm32-mcus-products/where-to-find-lwip-incoming-payload-data-for-webserver/m-p/640137This is a follow-up post with more questions. The server is apparently working more or less the way it should. Wireshark shows the following data. The first 3 lines are when I connect to the server. The next 8 lines are when I click a button on my page. It appears that the button sequence all is working properly as the server ACks, client ACKs, and back and forth until the transaction is complete. The really strange thing is, the last 8 lines are repeated 9 more times before transmissions stop. Transmissions should stop after the first full handshaking sequence completes. Any idea why it repeats an additional 9 times?Source Destination Protocol Length Info172.16.1.115 172.16.1.125 TCP 66 65055 → 80 [SYN] Seq=0 Win=64240 Len=0 MSS=1460 WS=256 SACK_PERM172.16.1.125

 Hello,I have designed a PCB with 3 STM32H725VGT6 MCUs, and assembled them according to my schematic:(sorry for this resolution, this is from a converted pdf)All 3 MCUs are the same, from this schematic.R5 and R2 are just 0R jumpers to select the boot mode.At first, ST-Link couldn't find any of them.  When I checked the voltage on the Vcap pin the MCU1 had 1.0008 V at both 2.2uF caps. STLINK still can't find the target. MCU2 and MCU3 had 0.0000V. on the Vcap pins.All 3 MCUs have their:- Orientation in the right place- VDDA / VREF+ connected- NRST at high - 3.3V at all the 100nF decoupling caps- 2.2uF caps from Murata (ESR < 8 mOhm @ 1 MHz) GRM155R6YA225KE11DSo I was wondering maybe the ICs were bad (which is unlikely considering that they are from Mouser)I checked the soldering and there were no bridges, but these symptoms are usually caused by some sort of soldering issue.  What else should I check?  

Looks to me like the FDCAN peripheral has a few registers that are marked 'r' when they are likely 'rw' in the RM. They are the registers that configure the size of the FDCAN messages. This isn't blocking my work; only thought the ST team should know so they can fix it if it is indeed a typo. 

Hello every ones; i found this component from ST: 211 ST- EZ204.Is a four pin Integrated circuit. does anyone know what it is? I cant found it data scheet

I am attempting to connect the satel-vl53l8a to the Nordic Semiconductor nRF5340 using the I2C protocol, but I am not receiving any acknowledgment (ACK). I have followed the wiring diagrams provided in this document: AN5945. Additionally, I have captured the output of my logic analyzer for reference.Startup sequence and signal sent to VL53L8Athe i2c address is always NAK

  Hello,I am using the NUCLEO-G071RB and the X-NUCLEO-DRP1M1 with the X-CUBE TXPP Software Bundle.I created my project via the instructions from https://wiki.st.com/stm32mcu/wiki/STM32StepByStep:Getting_started_with_USB-Power_Delivery_Dual_Role.Everything works fine.I have another question regarding this bundle. I want to disable both the sink and the source right from program start. I entered TCPP0203_REG0_RST_VALUE as 0b11001000U. Also i set VCC_VCONN to GND via a external wire. This should set the device in Hibernate Mode and start in default Mode. Which should be both Sink and Source disabled. After the initialization the Sink still starts up for a short period of time.How can i prevent the short startup of the Sink? Thanks in advance.

Hello,    I can not login to ST website. I was trying to download the Unicleo-GUI. Each time I try, when I press on the "user" icon from the main st.com page, a "bad gateway" error message is shown. In the past I was able to login.  EDIT: A day after I can login again, maybe a momentary website problem. Thank you.

Hello,I've read several forum posts commenting on the STM32 HAL management of LWIP, particularly ethernetif.c and trying to understand the interrupt driven zero copy examples. For reference in my application I do not use RTOS.After updating cube, and comparing my previous project version (based on FW_F4 V1.26.2) that the ethernetif.c  file has changed quite significantly. I assume this is in reaction to feedback from users in forum posts such as this detailed post https://community.st.com/t5/stm32-mcus-embedded-software/how-to-make-ethernet-and-lwip-working-on-stm32/td-p/261456The above mentions drivers being reworked following V1.27. And comments on problems such as [in reworked drivers].Could someone comment on whether the ethernetif.c in FW_F4 V1.28 rectifies the problems and criticism's that have been previously discussed across the forum?Alternatively, if the ethernetif.c is still a poor implementation, is it possible to comment on what has not been addressed (specifical

Hi!I'm an EE designing a PCB. Referencing the datasheet: https://www.st.com/resource/en/datasheet/stm32l412k8.pdfSection 7.4 on page 178, UFQFPN48, the Exposed Pad (EP) says that it should be connected to GND.Section 7.6 on page 184, UFQFPN32 (the chip that I'm using) the EP function isn't mentioned. Should I connect this to GND or leave it floating?My gut instinct is to connect it to GND, though has anyone had any experience with EPs and the ST standard way of dealing with them?Thank you for any assistance in advance.Pete.

I am curious about these parameters,I don`t konw where they are used.These are auto generated by following the official guide, but if I want to build a project with x-cube-ai and CubeMX my own and still use the model from model zoo, how shoul i deal with these two parameters.I dont`t see anything about this in code that auto generated by CubeMX with x-cube-ai.I just know the input of model is int8 as follow,but i see these two parameters in stm32ai-modelzoo official guideI am learning quantization, but still not familiar with it, shoul i do smething in my own project generated by CubeMX?I just give my model input image data [0:255] now and it works,but after reading the modelzoo guide I don`t know if it`s right.Thank you!!!!! 

I am attempting to use the https://github.com/stm32-hotspot/stm32wb-matter-device-over-thread/ repo to connect a STM32WB5MMG-DK to an Amazon Alexa acting as a border router, using the Alexa app. The device always fails to connect, outputting the serial log that I have attached. I am using the recommended firmware (stm32wb5x_BLE_Thread_ForMatter_fw.bin)I have also been unable to commission using the CHIP-TOOL and Raspberry Pi 5 border router.

I'm using the tamper peripheral clocked from the LSE (32.768Khz crystal), triggered by a tamper event on PC13. The core is clocked from the HSI, using the PLL to run at 120MHz.The tamper peripheral seems to work fine under normal operation, but if an unmasked tamper event occurs during a breakpoint (paused in a debugger, or a semihosting printf for example), the core hardfaults.This sounds it could potentially be related to Errata 2.15.1 where the RTC peripheral has incorrect behaviour when the core is stopped in a breakpoint.I haven't tested them, but I think the RTC_Tamper examples in STM32CubeL4 should showcase this behaviour, but I'll include my code here for the avoidance of doubt: RCC_OscInitTypeDef RCC_OscInitStruct = { .OscillatorType = RCC_OSCILLATORTYPE_LSI | RCC_OSCILLATORTYPE_LSE, .PLL.PLLState = RCC_PLL_NONE, .LSEState = RCC_LSE_ON_RTC_ONLY, .LSIState = RCC_LSI_OFF, }; RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = { .PeriphClockSelection = RCC_PERIPHCLK_RTC,

Hi, The FCC test report can be found here: https://fccid.io/YCPNFC06A1/Test-Report/Test-Report-4494604.pdf.We are running X-NUCLEO-NFC06A1 stack on top of NUCLEO-L476RG board with STM X-CUBE-NFC6 demo software, and the emission scan (at Intertek) is something like this (see below). We cannot replicate the same result in the above FCC report.On page 8 of the test report (EUT Radio Specifications), Transmitter Parameters section (b) lists many different modulation types. Then it says "A test mode allow to test all modulations at the same time".I am wondering if this means the test mode was running with a different firmware. We are running  X-CUBE-NFC6 software tools from https://www.st.com/en/ecosystems/x-nucleo-nfc06a1.html#tools-software, and I do not think it allows testing all modulations at the same time.Modulation differences should lead to different emission peak levels. For example, in NFC type A, Miller encoding (delay encoding) is used with an

Hi ST team,I'm currently using the STM32F769-DISCO board for testing purposes with a 12-lead ECG module, specifically the  ECG module. I have the library for this module available.My goal is to integrate this library with the STM32F769 board using TouchGFX. The ECG module receives raw ECG data and converts it to serial UART output. I need to receive this data in the RX buffer and then plot it on a dynamic graph representing the ECG wave.To ensure the correct acquisition of data from the module, I need assistance in testing the initial UART data output. I have attached the module's library and datasheet for reference. Could you please provide guidance on how to approach this?I appreciate your prompt response as I'm eagerly awaiting assistance. Thank you.

I have a brand new, out-of-the-box (i.e. I've not moved any of the jumpers) STM32H573I Dev Kit, When I plug in a USB-C cable into the CN10 port. Windows 10 informs me that the "USB device is not recognised".I've tried installing the ST-Link USB Drivers but that has not helped.Unless I'm misreading the User Manual (UM3143), I shoudl be able to use the on-board STLINK-V3EC debugger/programmer via CN10.Any hint/tips for troubleshooting? 

Hello to all, I'm trying to debug my multi core application. I'm following the AN5286 indication but I'm in stall soon, at "Shareble ST-Link"!I'm using Keil ver 5.31 and the ST-LINK is with firmware ver V3J5M2. The problem appear with one project selected at once.When I set the "Shareable ST-Link" flag the "Unit" popup became empty and the "SW Device" show "Unexpected Error". I attached the images.The STLink is visible:The SW device is not presentThe popup is empty too.Please: is there a way to enable correctly this flag and proceed to the multi core debug?Many thanksClemente

I have connected 100k NTC  with 100K PU resistance. ADC is measuring voltage on NTC is 1580 mV. While multimeter shows 1410 mV. 1410mV is correct number as it gives 32 degC  temperature.I am using ADC in polling mode. I added HAL_ADCEx_Calibration_Start also and ADC measurement changes to 1650 mV. please suggest on how to remove error.  

Hi Is there a way to sort of set a breakpoint to figure out which part of my code is messing with a specific memory address in STM32CubeIDE?I've got this dynamically allocated address that keeps getting changed by something else in my code, and I'm trying to track down where it's happening. Any tips on how I can find the culprit function or module would be awesome :beaming_face_with_smiling_eyes:Thanks 

In a project there are multiple MCUs of the same type. Each of these must have the same software on it and decide at startup which role they take. Some pin definitions are common for all the MCUs (like clock, identification, communication,...) and others differ completely, hence need to be initialized differently.It is a requirement that all of these MCUs are having the same software on it for update reasons. And preferrably changes pin definitions could be made in CubeMX.One option would be to have a CubeMX project for each of the MCU role and copy the generated code by hand to a overall project. This involvels a lot of hands on which is cumbersome and error prone. But since not too many changes are expected certainly doable.I've looked at nested projects. But since only one .ioc file can be active within one IDE project not really an option.There is also the option of Project references. But I could not find any documentation on the purpose of these and how it would work.Is there a g

Hi,Is it possible to understand the TAG variant from the UID during the inventory ?For example, ST25TV16K has the UID as shown below: For ST25TV02K, the UID is as shown below:If you see the above snapshots, ST product code is 48h for ST25TV16K and 23h for ST25TV02K. Are these values fixed and can we identify the tags from the product code ? Is the product code 48h  same for ST25TV64K also ? Could you also please tell what does the IC Mfg code say about the tags ?The reason I am asking is, If I know the tag, I can know which are the supported commands for specific tags. For example: Extended get system info is not supported in ST25TV02K, but supported in ST25TV16K.@Brian TIDAL  

Hello everyone, I hope you are all having a great day. I would like to know how to work with the labels for the dynamic graph widget : I want to know how to make the X axis labels display a real time value instead of numbers and I want it to be accurate to the real time, for example : Instead of 10,20  etc I want it to show 01:10 AM, 01:20 AM. etc. can someone help me with this please? Thank You Best Regards. 

Dear,we use EEPROM in our project with STM32L152. It seems like in some MCUs is erased random part of the Eeprom. It happens very rarely, and probably most likely when VCC is disconnected from PCB (MCU). Any solution, any similar experience?Best regards, Jan.

In our system with SMT32G041F6P6 powered by a battery, device gets to hung state when kept idle for few hours or days (randomly). We have already implemented a window  watchdog to detect any faults. Even with watchdog enabled, we are getting this hang issue. ( In this hang state, we couldn't see any kind of LED UI indications upon pressing the button which is the expected behaviour in idle state)When the NRST was checked , it was HIGH at that instant. At the instant, battery level is adequate. The device was only recovered by doing software reset.