STM32 MCUs Embedded software

Hello, I'm trying to use 12 vl53l1x(ToF) sensors with the stmf407vgt6 custom card. In addition, this board has a 5A 2 channel motor driver. I think the i2c data is getting noise during the motor start cycle. I tried to reduce the noise with filters (FIR, IIR etc.) but I haven't been able to do it yet. How can i fix this problem?

Hi,I'm playing with the LwIP stack on an STM32H723 Nucleo. I did everything regarding the variable placement, MPU config in the ram that needed to set up LwIP. With static IP it works just fine. I could ping it and I could implement an UDP server example. After it I thought I try the DHCP. The problem I do not get an IP from the DHCP server. The port on PC is set to have DHCP (tried on multiple PC) and what I see in WireShark is that the nucleo boradcasts DHCP Discover packets, but never gets DHCP Offer packets. And it is the same on multiple PCs, so I suspect something is wrong on the nulceo side. Is there any idea how to track the issue? In the "gnetif" main variable the IP, gateway, subnet is set to zero, no IP assigned to the device.

Hi.I have few questions regarding SDIO and SD card write performance.I am using STM32F446 MCU and a simple application using polling SDIO that writes (appends) 32 blocks (16KB) of data to the SD card every 20ms. I do not use filesystem, just writing RAW bytes. Application increases block address offset for 32 before every call to multi block write.Problem is, that sometimes multi block write fails - times out. It is rare and does not look to have any pattern - looks random.It times out in a block data writing loop because SDIO_STA_TXFIFOHE becomes 0 during transfer. So, it may write few blocks and then it is stuck until it times out.Data transfer timeout in DTIMER is set to 0xFFFFFFFF.I have few questions if there is anyone with more experience with SD cards:1. Since I do RAW writes, should writing duration be more or less constant? (around 3MB/s)2. Why would SDIO HW and/or SD card not be ready to receive new words in FIFO once transfer is already in progress?3. What would be the best

Our main board uses two STM32's: an STM32L5 which does most of the processing, and a STM32G071 which is used strictly as a USBPD port controller for two ports.  The L5 can assert / deassert the G0's BOOT0 pin, in order for the G0 to enter bootloader mode for firmware updates. However, in testing, the G0 always seems to come out of reset in the Main Flash memory boot area.  Below is the circuit we have implemented: I can confirm the STM32G0 BOOT0 pin goes high and low as expected. I can also confirm the L5 can reset the G0 as expected. For the G0 Option Bytes, I have BOOT_LOCK=0, nBOOT1=1, and nBOOT_SEL=0.  My test procedure is as follows:- L5 asserts the G0 BOOT0 pin high- L5 puts the G0 into reset (NRST pin goes low)- L5 takes the G0 out of reset (NRST pin high) However, the G0 always seems to come out of reset into the main flash memory area. What am I doing wrong here? I believe I am following the Boot modes of the G0 properly: &nbsp

In the comment to the functions it says (stm32f4xx_hal_smbus.c) * @PAram DevAddress Target device address The device 7 bits address value * in datasheet must be shifted to the left before calling the interface I suspect this was copy & pasted from the I2C driver. When not shifting the address the driver works.

I have the STM32H73x.svd from then STMCubeH7 pack version 1.9.0 but it is far from compete/correct.Some examplesAHB3 clock enable /reset registers do not have any of the OCTOSPI items in there, but has a QSPI entry.Similar some timer enables/reset are in the same case (23 and 24 specifically) the Flash ACR register field for Latency is the incorrect length (3 when it should be 4)

Hi All,Cube MX version - 6.9.0Software Package version - 1.3.0I am using STM32U575i-EV evolution board and trying to run the Ux_Host_MSC example code.I generated the code using STM32 Cube Mx using example selector option, I generated the code for IAR.As per the below readme file./STM32Cube/Example/Ux_Host_MSC/readme.htmlI have configured or connected below jumpers.JP25 : UCPD_5V JumperJP6 (UCPD_SRC) : Please on this jumper UCPD_SNK02 is mentioned on board.JP14 and JP15 : both are connected to 1-2.after flashing the code I am hitting the hard fault, could you please let me know which are the settings I might need to do if I generate the code using cubemx. currently I have not done any modification through cubemx.

Hello, Please add an empty function on HAL for other MCU's what doesn't have that functions.For example HAL_ICHACHE_Enable() for F1 series. This feature can help to easy porting to other series of MCUs.Thanks.

I am working on a project where I need to synchronize a PWM signal generated by an STM32 microcontroller with an external signal. To achieve accurate synchronization, I believe I need to implement a drifting correction algorithm. I am seeking guidance on how to achieve this with the STM32 microcontroller. Can anyone suggest an algorithm or approach to achieve this synchronization and drifting correction effectively? Anyone have any code examples or code snippets that demonstrate synchronization with an external signal and drifting correction using the STM32 microcontroller?  Are there any open-source libraries or resources available that can help me achieve this synchronization?Thank you for your help and guidance in advance! I appreciate any insights or experiences you can share to assist me in accomplishing this synchronization and drifting correction task with the STM32 microcontroller.

I am trying to implement the BLE stack (WB5 series) on an RTOS. I work with stm32wb5mm-dk evaluation board. I have a problem with the callback functions that are not being called in the new implementation. In an ideal world it would work like this : after the initalisation and starting the main function , TlUserEvtReceived needs to be called to handle the present events IPCC is there because wb5 has 2 cores.Sure enough the rtos handles the interrupts now. but tbh I can't tell whether they work fine or not.Status of the project: it is running( runs the sequencer) without calling the ble stack ( NB: the initiliazation is done correctly ).what could be missing. what should I check? how can I solve this issue? Thank you for your help

Hello,I want to transfer my ADC Data, which is transfered with DMA, over UART to a host.  /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2023 STMicroelectronics. * All rights reserved. * * This software is licensed under terms that can be found in the LICENSE file * in the root directory of this software component. * If no LICENSE file comes with this software, it is provided AS-IS. * ****************************************************************************** */ /* USER CODE END Header */ /* Includes ------------------------------------------------------------------*/ #include "main.h" #include <stdint.h> #include <stdio.h> /* Private includes ----------------------------------------------------------*/ /* USER CODE BEGIN Includ

Hello Everyone, I am trying to establish Ethernet communication with STM32H743Bi controller in my custom board. Am using 3 port PHY from Microchip - KSZ8863RLL in RMII mode. I am generating the code using STM32CubeMX with the LwIP Stack and FreeRTOS. Currently i cant even ping the board. I am using STM32CubeID. In cubeMx i could select only LAN8742 as PHY. In BSP->Components folder i can see the LAN8742.c and .h files. I understand i need to replace the these files with corresponding KSZ8863RLL files. Does anybody know how to configure. Please information's. help me.Please let me know if i need to provide any other Thanks and Best Regards,Vineeth

Hello there.In my project, I am using LWIP with FreeRTOS at CMSISv1 and static memory allocation (configSUPPORT_STATIC_ALLOCATION = 1, configSUPPORT_DYNAMIC_ALLOCATION = 0). Is this a supported configuration? When I generate code, LWIP/Target/ethernetif.c:low_level_init contains calls to xSemaphoreCreateBinary(), which is defined only when dynamic allocation is enabled. Is this a known bug? If so, what is a workaround that I can use? Buildable code would have calls to xSemaphoreCreateBinaryStatic() instead. Right now, I am unable to fix the code in such a way that the changes will not be wiped out by the next CubeMX code generation, as the code is not within a USER CODE section. For reference, I am using a STM32H743BITx MCU, V1.10 firmware package and STM32CubeMX version 6.6.1. If this is an issue that has been resolved in a higher version, please let me know.Thank you!

Hi amazing comminity.. I have configured the adc for reading the internal temp and vref in the following way ..    void MX_ADC_temp_Init(void) { /* USER CODE BEGIN ADC1_Init 0 */ /* USER CODE END ADC1_Init 0 */ ADC_ChannelConfTypeDef sConfig = {0}; /* USER CODE BEGIN ADC1_Init 1 */ /* USER CODE END ADC1_Init 1 */ /** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion) */ hadc1.Instance = ADC1; hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE; hadc1.Init.ContinuousConvMode = ENABLE; hadc1.Init.DiscontinuousConvMode = DISABLE; hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START; hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT; hadc1.Init.NbrOfConversion = 1; if (HAL_ADC_Init(&hadc1) != HAL_OK) { Error_Handler(); } // Configure ADC channel for temperature sensor sConfig.Channel = ADC_CHANNEL_TEMPSENSOR; sConfig.Rank = ADC_REGULAR_RANK_1; sConfig.SamplingTime = ADC_SAMPLETIME

Hi Community!We're working with an STM32G0B1xx MCU and using USB PD v5.0.0 library from github (https://github.com/STMicroelectronics/stm32-mw-usbpd-core).I see here that USBPD_EXT_VDM = 0x1E is defined properly. However, when I use this with USBPD_DPM_SendExtendedMessage(), I get a generic "USBPD_FAIL" response, and nothing gets sent out on the CC line.So, my question is: Does the v5.0.0 library support Vendor_Defined_Extended message? Thank you for the support!Screenshot from the USB PD 3.1 spec 

Hi, I am working on a project doing realtime FFT processing on an audio signal using an STM32H730 processor with the CMSIS FFT library. Currently trying to reduce latency through lower block size and higher overlap between FFTs, and looking for ways to optimize and reduce processing overhead in the FFT function. I wanted to ask whether performance could be improved by replacing the arm_rfft_f32 function with the arm_rfft_f16 function? Would this be faster on the STM32H730 hardware? And would the fixed point functions like arm_rfft_q31 be faster still?Please let me know. Also open to any other advice on how to optimize CMSIS FFT processing for SMT32H730 hardware. Thanks!

I'm using STM32Cube_FW_G4_V1.5.1 for testing a NUCLEO-G474RE board, but none of the examples worked at the first try. After importing them into STM32CubeIDE v1.13.0, I'm always getting this error message on sysmem.c: ../Application/User/sysmem.c:63:1: error: unknown type name 'caddr_t' 63 | caddr_t _sbrk(int incr) | ^~~~~~~ ../Application/User/sysmem.c: In function '_sbrk': ../Application/User/sysmem.c:76:25: error: 'caddr_t' undeclared (first use in this function) 76 | return (caddr_t) -1; | ^~~~~~~ With reference to the solution posted into this thread:https://community.st.com/t5/stm32cubeide-mcu/core-src-sysmem-c-38-1-error-unknown-type-name-caddr-t/td-p/56309I have been able to fix all included examples for all boards by doing a search & replace into all sysmem.c files and I replaced all 'caddr_t' with 'void *'.I'm reporting this issue, so that it could be fixed into a newer release of that package, since it has been quite easy to do, afterall.Sincerely. 

Hello everyone,I'm working on stm32f103.I try to use HAL_uart_transmit_DMA, in a circular buffer for simple logs.I created a circular buffer, on which I can write my strings.the issue is... my circular DMA write it as as loop instead as finishing at the end of the string.So if I write "Hello" wait enough time and "World" in 8 bit long buffer, I get:"rld'\0'oWo" in loop.I would have hope with some magic, dma would stop '\0', but it doesn't. This would be great option for asciiI would have hoped dma would send the right interrupt sor it can be easy, but it's not.I would appreciate any advice so that dma_tx in circular would work as circular buffer, but appropriate with logs.I would love is those advice would use hal library instead of driver layer or register to keep it working between projetcs and chips.

Hello dear engineers,I have gotten stuck in running SDIO on stm32f429igt6.No matter how hard I have tried, I wasn't able to successfully use FATFS with SDIO and stm32f429igt6. My code is attached. the f_mount function with immediate force on mounting return fr_no_filesystem. I use SANDISK SD Card with 16GB formatted with FAT32. Any help would be appreciated. Neither KEIL nor CUBEIDE compiler show different behavior. Furthermore, is it possible to run NTFS on stm32f429?

I want to transmit data over fiber optic from STM32H743VIT6. I am using internal MAC of STM32H743VIT6 and LAN8742 as PHY. The ethernet signals after LAN8742 are going both in the RJ45 connector and also in Fiber optic transceiver. I am using AFBR5803ATQZ as fiber optic transceiver. Ethernet is not working using AFBR5803ATQZ as fiber optic transceiver.

I am currently writing code for STM32F107VC CPU, and I want to use ADC, calibrating it first. I have noticed a strange thing in the ST HAL library.The datasheet on page 223 reads "Before starting a calibration, the ADC must have been in power-on state (ADON bit = ‘1’) for at least two ADC clock cycles."However in the firmware for this CPU (stm32f1xx_hal_adc_ex.c) the function HAL_ADCEx_Calibration_Start first disables the ADC, then waits for 2 ADC clock cycles. It doesn't wait after enabling the ADC again. The comment in the code says "Calibration prerequisite: ADC must be disabled for at least two ADC clock cycles in disable mode before ADC enable". And the code that follows there disables the ADC (clears ADEN bit).Why does the HAL code wait two ADC clock cycles after disabling the ADC, when the datasheet clearly says it should wait after enabling the ADC? Is this intentional for some reason (I checked the errata, but couldn't find anything), or did the author of this functi

Hi ST USB PD community. I'm using https://github.com/STMicroelectronics/x-cube-tcpp but can't seem to find the right callbacks to respond to our port-partner when they send a Get_Battery_Status command.I need the ST MCU to respond with the Battery_Status data message.  Does the USBPD library support this?I have similar question for Battery_Capabilities and Manufacturer_Info.thank you for the support! 

I've been working on a project based on the STM32U575 Nucleo board for some months now. I just updated STM32CubeIDE yesterday and I noticed the ThreadX memory pool size option in "Middleware and Software Packs -> THREADX ->Memory Configuration" has shrunk to a max of 201.216K bytes. Previously it was something a little bit larger, can't remember the exact number but at least a few K larger. The application I am writing needs nearly all the available memory on the chip, north of 700K. Since I've started this project, I've been manually updating the definition for the TX_APP_MEM_POOL_SIZE in app_azure_rtos_config.h to something suitably large after making changes in CubeMX and haven't noticed any issues, but I've always wondered why this memory pool size limitation is imposed. The new update and shrinking of the max mem pool size has only served to remind me of this. Can anyone explain exactly why this memory limit is so small in comparison to available ram? I've read the

I developed my first canbus bootloader for a stm32f105.Now im in need to use that same bootloader in a stm32f072.The bootloader works but im unable to build a program that starts from a flash address other than 0x8000000..... How are multi programm apps being programmes in stm32f0xx families?

How to receive the commands through the usb of USB_CDC_ receiveHello,I am working on the stm32f070c6 USB_CDC virtual COMK port ,I am transmitting the data from stm32 mcu to serial monitor but when I am trying to receive the commands through usb from my pc to serial monitor, i used usbd_cdc_receive function but unfortunately I am not receiving any commands from the pc to select the different operations of stm32f070c6, I am taking the received data to the main program of switch cases but I am receiving the data at usb_cdc_receive function but im not getting the data in main file ,how we can receive the data from the pc using USB_CDC virtual COM port and also when i try to use ptintf and scanf functions in stm cube IDE , even printf scanf functions also not working to print the messages on serial monitor ,they are not working nothing to display on the serial monitor, how can I overcome this problems, if anyone have an idea about of these please give a replyThanks in advance