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I am looking for help solving a CDC-ACM problem with Azure Rtos ThreadX, and the USBX Middleware for STM32F4.My device is an STM32F427VGTx.I currently have a project that uses the USBX host library. I am connecting up to 4x CDC-ACM devices through an off-the-shelf USB Hub.I had problems connecting multiple devices through the hub, but I have solved that after following the solution to update the USBX core bsp from the stm32-mw-usbx repo. (STM32H7 and USB2514 Continued Problems) I can connect to all 4x CDC-ACM devices (data class instance and control class instance enumerate successfully on all devices).I can send commands to all devices using the control interface by sending a transfer request to the control endpoint.I can read from up to two CDC-ACM devices, but the third and fourth device will timeout after calling ux_host_class_cdc_acm_read. The function returns a transfer-request-timeout after failing to retrieve the ux_host_semaphore. The status of ux_host_semaphore_get is al

Hi, I'm using a fresh debian testing (12) and when i try to launch "SetupSTM32CubeMonitor-Power.jar", i get the error :Command line arguments: SEVERE: java.lang.ArrayIndexOutOfBoundsException: Index 70131 out of bounds for length 22674Debian is not in the supported operating system, but ubuntu should not be so far. I found on the forum, that the error occured on stm32cubemonitor on ubuntu recent version.Is there a patch/upgraded planned or anyway to make it run ?Could someone on ubuntu tell me if it work on it ? Thanks in advance,

If I find a bug in CubeIDE/CubeMX's code generation (like not turning on power to SDMMC), is there somewhere on my system that I can alter the boiler-plate code that is used to generate the project until the correction comes out in a future release?Thanks,Andrei (from The Great White North)

Hi, ST Community!We are developing a device based on the STM32MP257DAK3 processor.The firmware is built using Yocto (Scarthgap release) with Linux kernel 6.6 from ST and the meta layers meta-st-openstlinux and meta-st-stm32mp.The device includes a USBPD controller (MAX77958) that is managed by an external microcontroller. This setup is intended to allow USB charging independently of the main processor.Goal:We want to enable USB3DR in USB 2.0 peripheral mode (to use USB gadget / Ethernet over USB under Linux).In U-Boot and DFU mode, USB works fine→ The PC sees the device→ Data transfers are successful→ USB traffic is visible on the oscilloscope After Linux boots:→ The PC doesn’t detect the USB device→ USB lines are completely idle (both lines at 0V)→ usb1 interface appears in ifconfig→ No errors in dmesgDevice Tree config (from ST documentation):&usb3dr { status = "okay"; dwc3: usb@48300000 { maximum-speed = "high-speed"; role-switch-default-mode = "peripheral"; usb-ro

Hello everyone. I'm currently just learning and getting familiar with microcontrollers. For educational purposes, I would like to set up master-slave communication between two C8T6 boards. The master should send an array of values, which the slave receives and evaluates. If the array matches a predefined pattern, the slave sends a response—also an array of values. The master receives the array and, if it matches the expected pattern, changes the state of an LED. This process should repeat in a loop.When I connect the power, only the LED turns on and nothing else happens. If I reset the slave (using the button on the board), the communication starts working and the LED begins blinking. I can also get the communication to work by resetting the master, but I usually have to press the reset button several times before it connects properly. The slave always connects correctly after a reset.If someone could help me figure out what I'm doing wrong, I would really appreciate it. I've been stru

Hi, Recently I have mistakenly upgraded to FUS 2.0 and BLE stack 1.22.1 for my stm32wb5mmg chip. I was using FUS 1.2.0 and BLE stack 1.22.0.2 before and the system behaves perfectly fine with the firmware on hand. After upgrading it the device doesn't seem to be advertising and couldn't be detected by any other devices. I have notice that it is impossible to downgrade the FUS version is there a way to tackle the issue? If I wanted to erase the whole chip and copy the memory of a working chip, is that possible?

Hi,I'm looking for information on the MP131F pin assignments for USB type-C signals CC1 and CC2. I'm working on a custom board that uses a USB type-C for power only as is done on the MP157D-DK1 board. thanks and best regards

When trying to program the STM32L4P5RE, I get an assertion failure when trying to program the second bank like this:HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, address, data)This call fails if my address is in the second bank `0x08080000`.  Looking at the source code, I get an assertion failure here: static void FLASH_Program_DoubleWord(uint32_t Address, uint64_t Data){ /* Check the parameters */ assert_param(IS_FLASH_PROGRAM_ADDRESS(Address)); <---- HEREI understand when DBANK (Or DB1M) is set, we cannot read the other bank.  So how are we supposed to actually program it?

Hi all,I'm working on a BLE project on STM32WB5MMGHx module on each side (client and server).For the server side, I use CubeMX to generate almost all the code (pairing configuration, GATT service and characteristics, etc.). I managed to "bypass" some CubeMX generated using the USER CODE comment areas to do what I wanted.For the client part (more complex), I can only get a Custom P2P Client (this not what I want). Looks like I can't disable the Custom P2P Client (combobox disabled).So here is the questions :- How am I supposed to use CubeMX to create the BLE client with some custom code without bypassing 90% of CubeMX generated code (if possible...) ?- Should I create all the projet manually and integrate some CubeMX generated code (in another folder) by hand ?  Thx

Hello Community,I’m working on a custom board using the STM32G474VET3 MCU and encountering an issue with the ADC readings. I’m consistently getting a raw value of 4095 on all the ADC channels I’m using. It seems like something might be misconfigured, but I haven’t been able to pinpoint the cause.Any insights or suggestions would be greatly appreciated.Thank you!

Hi, guys,     I've bought STM32H745I-DISCO board to make an EtherCAT master, so I successfully employ EtherNet controller, USART3 for debugging but SPI2 has a problem. (I'm mostly novice fir H745)     I decided to use SPI2 for communication with external STM32F4xx controller, which exchanges 26 16-bit words with H745 board within 10kHz time frame, so it's a bit loaded communication. The attached picture renders the snapshot from logical analyser. 4 upper lines are SPI lines, other 3 lines are GPIOs used for debugging purposes - to show interrupt work.    The picture clearly shows that physical lines exchange data - I see expected 26 16-bit words from F4xx and data sent from H745 - in all cycles the picture is the same. But in reality I see only one time words from 4 to 22 in receive buffer (other appears to be zero), after that they are not updated at all. So receive is fault always. SPI2 is used in DMA mode via library function (code is below),

Hello,I'm running ubuntu 24.04 and running STM32CubeMonUCPD with "jara -jar SetupSTM32CubeMonitor-UCPD.jar" fails with error  Command line arguments:SEVERE: java.lang.ArrayIndexOutOfBoundsException: Index 70131 out of bounds for length 22674This same thing happens for both version 1.4 and 1.3 of ucpd monitor. What are my next steps? Kind regards

Hello, I am working with an STM32G4 microcontroller and noticed an unexpected behavior regarding Bit 20 (BFB2) in the User & Read Protection Option Bytes.According to the reference manual, BFB2 is a read-only bit.After performing an option bytes erase in Keil, I expected BFB2 to be cleared to 0 (default).However, after a system reset, I observed that BFB2 is set to 1.I would like to understand:Who sets BFB2 to 1 after an option bytes erase?Is this controlled by bootloader behavior, internal flash controller logic, or some default hardware mechanism?

System setupComponent Details MCUSTM32U575 (OctoSPI1)FlashWinbond W25Q128JV – Quad‑SPI NOR flashIDE / FWSTM32CubeIDE 1.18.1, STM32 HALClockingOSPI clock = 50 MHz, Dummy cycles = 8SupplyVDDL = 3V3, Flash = 3V3What already worksIndirect Read/Write via HAL_OSPI_Command() + HAL_OSPI_TransmitReceive() is fine.External loader built; CubeProgrammer can erase, program, verify and read the entire flash (see screenshot).Constant data is programmed successfully:const char string2[30] __attribute__((section(".ext_flash"))) __attribute__((aligned(4))) = "Hello Word";CubeProgrammer shows the text correctly.The problemAs soon as I switch to Memory‑Mapped mode every word read is 0x00000000.No hard faults—just empty data.Checks so farMPU regionBase = 0x9000 0000, Size = 8 MB, Attributes = Normal, WT, Shareable, Execute‑Never.CacheI‑ and D‑cache invalidated before/after enabling MM.Also tried with caches fully disabled → still 0x00.OctoSPI configQuad‑SPI, SDR, DQS disabled.Dummy = 8 (datasheet valu

I had someone to identify the wrong diode. The diode I need identified isst e3 gdxz803thank you, in advance, for all of your help in identifying the diode!

I have two Nucleo boards that are connected with a CAN bus (Transceiver SN65HVD230). I would like to communicate with standard CAN, eight data bytes, data rate 50000 bit/s. For the F407 all TX & RX events are triggering (reused old working code) the CubeMX settings (HCLK 168 MHz, periphiral clk 42 MHz) are: The G431 is not working as expected, the CubeMX settings (HCLK 170 MHz, peripheral clocks 170 MHz) are: The G431 TX/RX interrupts are working only in external Loopback mode in normal mode nothing triggers. Some code for the configuration of the G431 CAN:   HAL_StatusTypeDef CAN1_Start(int8_t CAN_HW_init) { HAL_StatusTypeDef status; FDCAN_FilterTypeDef filterConfig; if(CAN_HW_init == 1) { MX_FDCAN1_Init(); } // Configure Rx filter filterConfig.IdType = FDCAN_STANDARD_ID; filterConfig.FilterIndex = 0; filterConfig.FilterType = FDCAN_FILTER_MASK; // FDCAN_FILTER_RANGE; filterConfig.FilterConfig = FDCAN_FILTER_TO_RXFIFO0; filterConfig.FilterID1 = 0x000; filter

Good afternoon community. I've been dealing with this problem for days and I can't find a solution. It turns out that I migrated to Ubuntu and had to install the STM32CubeIDE Software again. The error appears when I want to communicate to my STM32f072B board. It gives me two errors 1) "ST-LINK is not in DFU mode" and 2) "Unexpected flash size for ST.micro". As I was investigating, I cannot update the ST-LINK Firmware, it does not allow me. I have tried it on another computer, and the updates are done automatically by clicking on "update". But it doesn't allow me. I tried plugging it in with the RESET button pressed, but that didn't fix it either. I don't know where else to look to resolve this error that doesn't allow me to move forward. I hope someone from the community can help me. Thank you so much.  

I'm trying to understand how the CSR register works. I though initially that the various reset reason bits are mutually exclusive. That turns out not to be the case. For example, I'm seeing SFTRSTF and PINRSTF together, and also BORRSTF with PINRSTF. I'm curious to know the possible combinations and what they mean.Looking at the reference manual, it looks like the bits *are* mutually exclusive, with exception of PINRSTF. This is presumably set because the other signals are ORed together and used to create a pulse on NRST. Is this reading of the manual correct?There is no PORRSTF in the CSR register. My guess is that a POR is signalled by having PINRSTF alone set. Is this correct?On a not unrelated topic, what is the minimum Vdd at which the flash can safely be written? I'm seeing ECC faults and flash corruption, which seem to be due to writing a flash log entry when the battery is almost exhausted. I want to mitigate against this by detecting BOR or another low voltage condition,

Dear..STI'm developing custom NFC PCB 4 layers 0.8mm based on 20x20mm main antenna example in STEVAL-25R200SA kit.I tried to use the components in BOM for EMC filter L 0402DF-421XJRW 420nH 510mOhm and adjust frequency to18MHz  and get EMC capacitor 186pF which is similar to the kit (180pF) I follow AN6065 as much as I understand.However I don't know the Antenna parameters, Q value, of the kit, so the matching L, C, R seems not the same as the kit. So if you have these parameters, or smith chart of the main 20x20mm antenna, please share to me.My application need very low power and the distance of the ST25DV64 tag and the reader is very close (5-10mm).I will try to tune antenna for lowest current consumption so that the reader still read the tag.Please advise Target Q, and Target matching Z, I should use with 20x20mm antenna. The supply for the ST25R200 is 3.3V(I read AN13219 from NXP as well, page 22 noted that Target Z 16 Ohm for 5V, 11 Ohm for 3.3V so I guess to reduce Targe

Dear all,I have purchased the NUCLEO-H7S3L8. I am facing an issue when trying to debug a basic (blank) project. The Debugger is unable to connect to the target. Here is the console output :"STMicroelectronics ST-LINK GDB server. Version 7.10.0Copyright (c) 2025, STMicroelectronics. All rights reserved. Starting server with the following options:Persistent Mode : DisabledLogging Level : 1Listen Port Number : 61234Status Refresh Delay : 15sVerbose Mode : DisabledSWD Debug : EnabledInitWhile : Enabled Waiting for debugger connection...Debugger connectedWaiting for debugger connection...Debugger connectedWaiting for debugger connection...-------------------------------------------------------------------STM32CubeProgrammer v2.19.0 -------------------------------------------------------------------   Log output file: /tmp/STM32CubeProgrammer_fldzzj.logST-LINK SN : 0020002B3433511830343835ST-LINK FW : V3J16M7Board : NUCLEO-H7S3L8Voltage : 3,30VSWD freq : 8000 KHzConn

Hi everyone, I'm facing a strange issue in my TouchGFX project. I added a new method function1() in my Screen1View class,and when i create the definition of that function1() in screen1View.cpp it showing the function not declared i followed controllltech youtube tutorial but for me im stuck here.i will share the .hpp and .cpp and error messageserror im getting 16:39:36 **** Incremental Build of configuration Debug for project STM32H735G-DK **** make -j8 all arm-none-eabi-g++ "C:/TouchGFXProjects/MyApplication_14/TouchGFX/gui/src/screen1_screen/Screen1View.cpp" -mcpu=cortex-m7 -std=gnu++14 -g3 -DUSE_HAL_DRIVER -DUSE_BPP=24 -DDEBUG -DSTM32H735xx -DUSE_PWR_DIRECT_SMPS_SUPPLY -c -I../../Core/Inc -I../../TouchGFX/App -I../../TouchGFX/target/generated -I../../TouchGFX/target -I../../Drivers/STM32H7xx_HAL_Driver/Inc -I../../Drivers/STM32H7xx_HAL_Driver/Inc/Legacy -I../../Middlewares/Third_Party/FreeRTOS/Source/include -I../../Middlewares/Third_Party/FreeRTOS/Source/CMSIS_RTOS_V2 -I../../Mi

Could someone please send me the package pinout  for the SPC584Cx or SPC58ECx part numbers?

Hello! I want to build a simple application (such as UART messages, GPIO bit flipping, etc.), with the target being SR6G7, and run it on a custom board. For this reason, I wonder what kind of work I need to do? The StellarStudio development tool has now been downloaded. Is there any development guide for SR6G7? Thank you in advance!

I made a custom board using a C091KCT6. I assumed I would be able to figure out a way to display data in real time using printf. Unfortunately, I did not make provision to expose PA2 and PA3 (or indeed any pins other than the ones used by my board). PA2 is in any case in use as SPI1 MOSI. So I have pretty much accepted that I need to make a new custom board, and I am keen to ensure that I will be able to use printf this time!I believe that two good solutions are to buy the STLINKV3-SET and either a) re-design the board to expose the PA2 / PA3 UART to that ST-LINK or b) re-design the board with an MCU that has a SWO pin and expose that to the STLINK-V3.I would like two kinds of help, please: if I do not need to buy a new debugger or re-design the board, it would be great to hear how I can use printf with the setup I have, or avoid one of i) buying a new debugger and ii) re-designing the board.If I do need to buy a new de-bugger and re-design the board, it would be great t

This is not a question, but a solution to a problem that took me forever to solve. This may be evident to many, but it was not to me, soI hope this will save others (and my future self) a lot of time...I was trying to implement a custom bootloader, where I could not even get the minimal implementation working: a slowly blinking LED when doing nothing and staying in the bootloader, or a quickly blinking LED when jumping to a different application.The issue is that this is tricky for the STM32F030/070 on which I am developing, because it does not have a VTOR register and the few code examples I found did not work, or did jump, but interrupts stopped working.The bootloader only needs to jump to the new reset vector:#define APP_ADDRESS 0x08004000U void JumpToApplication(void) { __disable_irq(); if (*(uint32_t*)(APP_ADDRESS + 4) == 0xFFFFFFFF) { return; // invalid reset handler } uint32_t jump_address = *(volatile uint32_t*)(APP_ADDRESS + 4); void (*app_reset_handler)(void) = (