STM32 MCUs

Hello,We are using STM32C071GBU6 MCU chip with USB device interface function. Now we have a problem using ST-Link utility tool to download BIN file to MCU:ST-Link utility tool always report: connection lost.In our design we use USB micro-B type port to supply power for the board.We checked MCU voltage and value is 3.2V, which is normal.  While using the same programmer and IDE tool, we can successfully connect STM32F446 MCU(while STM32F446 board power supply is from DC regulator power).Please see attached pictures for details. Please help find the root cause. Much thanks!

Hello,   I am trying stm32le5ccu6 with SUBGHZ PINP PONG method to send data.in that i am getting stuck at 3 things 1. rtc for time and date. 2. writing data into internal flash address 3. when trying stop2 mode, i have set up 20 sec wake up interrupt. so device wakes up every 20 sec to send data over radio. but after 1st wakeup the device doesnt go in stop mode stays awake. keeps the radio SMPS on. i even tried clearing the SMPS bit. has aanyone tried it, ?

Good morning, I have been trying to make simple characters appear on the 16x2 character LCD display for a while now and I am using a U575ZI-Q core board. I have followed many tutorials but none of them have allowed me to display a simple line of text on the display.I would like to point out that with the Arduino board I have no difficulty displaying simple characters like hello word, but with this board I can't. I am using two libraries in a row and the following code in the main.c file. Could you help me? The 16x2 LCD display has the I2C driver with a PCF8574T integrated circuit.   /* USER CODE BEGIN Header */ /** ****************************************************************************** * @file : main.c * @brief : Main program body ****************************************************************************** * @attention * * Copyright (c) 2025 STMicroelectronics. * All rights reserved. *

Hello,I'm developing a customized board with STM32H723ZGT6, and I need to prepare it to program the uC, so I'm placing a connector to conect the STlink V2 or V3. Looking for the documentation I have diferent information about the programmer pinout. In the images you can see that pins 2 and 3 are different. What infomation should I use?Many Thanks! 

Hello community, In my project requires upto 16384 points of FFT(Fast Fourier Transform) . I found out that I can’t perform this number of FFT points using arm CMSIS DSP library since it is limited to 4096 point Max. Due to this I have to use external library So I dont have any external library idea guide me to achive this  on the micro-controller (STM32H745ZI).CMSIS DSP It works well up to 4098 point.  I need to perform 16384 point so any library files,links , ideas or any video links could helpfull...

Hello,I am having issues communicating over SPI with an external ADC the ADS7038. I am using an STM32H750VB and sourced the code from github (precision-adc-examples/devices/ads7038 at main · TexasInstruments/precision-adc-examples). I am unable to read data from the ADC when it is connected to a thermocouple and only get a return of 0. I have tried reading from individual registers but have been unable to return a value. The STM32 pins all have correct continuity, but the ADS7038 is difficult to probe since it has a QFN package. I was able to get a signal on SCK and MOSI but MISO was just high. SPI is set as Full-Duplex master using CS pins to enable with a Baud rate of 2 Mbits/s. Attached is the entire code but also here are some screenshots of the main programs used to communicate SPI and read from the ADC. Any ideas for other

Hi All, I am facing a strange issue with the STM32H7S78-DK.I am using STM32CubeIDE for all of these tests (Version: 1.17.0, Build: 23558_20241125_2245 (UTC)) and of course STM32CubeMX (Version: 6.13.0-RC5 Build: 20241122-0809 (UTC)).Basically when using a STM32CubeMX generated project with default peripherals, HAL_SD_Init fails. The root issue is that HAL_SD_Init -> HAL_SD_InitCard -> SD_PowerON -> SDMMC_CmdGoIdleState -> SDMMC_GetCmdError times out. After a lot of confusion and testing I figured out that this issue seems to be linked to using a freshly generated STM32CubeMX project for the board in which you select "Initialize all peripherals with their default Mode", although this isn't always the case. Here's what I have tested and the results: If I generate a project using STM32CubeMX with only the Appli project, select NO

HelloI use CAN FD and have a functioning communication with 3 participants. Now I want to activate the interrupt that notifies me when the device has lost the arbitration contest. I forward each of the four NVIC interrupts in stm32h7xx_hal_fdcan: void FDCAN2_IT0_IRQHandler(void) { HAL_FDCAN_IRQHandler(&hfdcan2); } When initializing CAN, I activate the interrupt: retVal = HAL_FDCAN_ActivateNotification(m_Fdcan2Handle, FDCAN_IT_ARB_PROTOCOL_ERROR, 0); and set the CallbackHandle beforehand: retVal = HAL_FDCAN_RegisterTxEventFifoCallback(m_Fdcan2Handle, MyCallback); SYSM_ASSERT_STOP(retVal == HAL_OK, retVal); retVal = HAL_FDCAN_RegisterErrorStatusCallback(m_Fdcan2Handle, MyCallback); SYSM_ASSERT_STOP(retVal == HAL_OK, retVal); retVal = HAL_FDCAN_RegisterTxBufferAbortCallback(m_Fdcan2Handle, MyCallback); SYSM_ASSERT_STOP(retVal == HAL_OK, retVal); retVal = HAL_FDCAN_RegisterTxEventFifoCallback(m_Fdcan2Handle, MyCallback)

Posted on March 24, 2017 at 11:03Hello there,Currently I'm using a STM32F407VG discovery board to testing the stm32 low power features. STM32CubeMX was used to generate a simple demo. However, it seems always not able to enter sleep mode (standby mode tested, same story). Its a simple program, all peripherals and clock are remain in reset state. The main function looks like this: int main(void){    HAL_Init();    SystemClock_Config();    HAL_PWR_EnterSLEEPMode(PWR_MAINREGULATOR_ON, PWR_SLEEPENTRY_WFI);   while(1)   {   }}Its for sure code will goes to while(1) segment and not enter SLEEP mode. I've done some readings and say Systick can cause the problem. So I add code below right before calling HAL_PWR_EnterSLEEPMode();// disable SysTickSysTick->CTRL = 0x00000004;And m

Hello ST Community,I am currently working on programming an STM32G070RBT6 via UART using an FTDI interface connected to my PC via USB. Initially, the STM32 CUBE programmer successfully uploads the program once, but subsequent attempts to upload fail. In order to upload the program again, I need to connect via SWD, erase the full flash using the ST-Link utility, and then I can upload the program.Here’s what I’ve verified so far:The boot pin is high.The nRESET pin is functioning as expected (goes low when pressed).When once program is uploaded it runs as expected.code:HAL_GPIO_WritePin(TEST_GPIO_Port,TEST_Pin,GPIO_PIN_SET);/* USER CODE END 2 */ /* Infinite loop *//* USER CODE

I'm using a WB55 with IWDG enabled. I want to disable The IWDG when the device is in Standby mode. I have cleared the IWDGSTDBY bit using STM32CubeProgrammer, but I still get resets from the IWDG.What am I doing wrong? 

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I'm on STM32F103CBT6.I have a TI DAC8564 on SPI2.  It has a 24-bit input register, requiring me to TX a pair of 16-bit values (extra 8 low bits are ignored) while SYNC is low.  After sending, I have to toggle SYNC high and then low to begin a new write cycle.I want to perform this write sequence (TX 16-bit value, TX 16-bit value, SYNC high, SYNC low) using DMA, ideally all synchronized by a single timer (currently TIM2).  The timer will run at 160kHz and send a DAC buffer consisting of 64 samples of 40kHz audio for each of 4 channels, each sample being a 16-bit pair.I've had success using DMA to send the SYNC high/low to GPIO at defined phases of the timer cycle.  I'm now looking at using DMA to write the pair of 16-bit values at two other phases of TIM2.  RM0008 lists TIM2_CH2 and TIM2_CH4 as available requests for DMA1_Channel7.  Can a single DMA channel receive requests from two different channels of

Dear ST members, I downloaded the MLPF-WB-01D3 footprint from Ultra Librarian and imported on Altium. The script loads 3 versions of the footprint but none of them matches the recommended dimensions found on the chip datasheet, specifically on the paste and solder mask layers. Can you send me the correct footprint, or can you approved the attached one please? I already had issues with MLPF-WB55-01E3 were my board failed the spurious emission test and to this day I still have no idea what was failing on my design. I don't really want to this unpleasant experience again.

I don’t understand the behavior of the _C ports. According to the datasheet, the pin type for PA0_C is listed as ANA (analog input only). However, I can configure it as an output and successfully generate a square wave by toggling it in a loop.Given that, it seems the pin does have an output driver, but I can't get TIM5_CH1 to generate PWM on this pin. (Note: The same configuration works perfectly on TIM5_CH2, so it’s not a configuration issue.)Additionally, when I configure PA0 as an ADC input, PA0_C no longer works as an output, only when PA0 is in reset state (not configured)This behavior is confusing because it contradicts the pin type listed as ANA in the datasheet, and it’s not clearly explained how these _C pins should behave. Could someone clarify what can or cannot be done with the _C pins and why this behavior occurs?The IC is an STM32H743XI (TFBGA 240+25).

Hello,I am using the STM32U5G9J-DK1 to learn the GUI development, and I have created a very simple UI project in TouchGFX designer with the dev. board setup. The UI has only a box widget with a filled color, nothing else. I could successfully run the UI on the target board either:- directly click the 'Program and Run' button in TouchGFX designer.- or using the default STM32 CubeIDE toolchain, i.e. compile & debug in the IDE.So far, the default CubeIDE toolchain works good.And I realized the new TouchGFX 4.25 support CMake as the build system, and I have followed the link to set it up. I am using VS Code with the correct setup of STM32 VS Code Extension, and the X-Cube TouchGFX version is 4.25.0. Following the guide, I could successfully build the project. The target file is generated as {proj_roo

Hello,STM32F103RB microcontroller.I want to use Using one timer as prescaler for another timer mode (see figures below).I want the slave timer to increment its counter every time the master timer ge

Hi! I have custom board with new mcu stm32l562ve. Board has out pins - SWDIO and SWCLK.I am try connect by st-link v3. But mcu not connected. Also, i tested with connect nRST ( setting "Under Reset" in st-link ). But this variant same as first. MCVU new from Mouser. Do you have any idea?

I am working on a custom project and am stuck on one issue which is a large binary file after compling the lorawan_end_node example.   I am looking to have a file size of around 50Kb (currently it complies at 250Kb). I have tried the suggestion to change the complier setting is there anything else I can do to achieve this    Also, for Lorawan to upgrade its firmware over the air how much time does it takes to upgrade a file size of around 100Kb 

@Amel NASRI @Tesla DeLorean Hi! I have a question about the ADC WD. I am trying to use it, being triggered by a touchscreen, I have set it as follow: static void MX_ADC1_Init(void){/* USER CODE BEGIN ADC1_Init 0 *//* USER CODE END ADC1_Init 0 */ADC_AnalogWDGConfTypeDef AnalogWDGConfig = {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.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;hadc1.Init.Resolution = ADC_RESOLUTION_12B;hadc1.Init.ScanConvMode = DISABLE;hadc1.Init.ContinuousConvMode = ENABLE;hadc1.Init.DiscontinuousConvMode = DISABLE;hadc1.Init.ExternalTrigConvEdge = ADC_EXTERN

Hi   I am wanting to use the LPTIM to break out of STOP2. I have a function to set the timer, and go into stop mode. After setting LPTIM1->ARR,  LPTIM_ISR_ARROK in the LPTIM1->ISR  is never set. After X amount of seconds, the STOP2 exits as expected, but the  PWR_SR1_WUF in the PWR->SR1 is never set.  The timer interupt is called when the STOP2 exits. Here is my code, not sure what I am doing wrong, anyone help?:   #define PWR_CR2_LPTIM1WUF_Pos (5U) #define PWR_CR2_LPTIM1WUF (1UL << PWR_CR2_LPTIM1WUF_Pos) //always gets called when STOP2 exits void LPTIM1_IRQHandler(void) { // Just clear the interrupt to prevent re-entry if (LPTIM1->ISR & LPTIM_ISR_ARRM) { LPTIM1->ICR = LPTIM_ICR_ARRMCF; } } void LPTIM1_StartSTOP2Timeout_ms(uint32_t ms) { // Enable LPTIM1 and its clock RCC->APB1ENR1 |= RCC_APB1ENR1_LPT

Hi, I have a custom board in which VREF+ is supposed to be 3.3V. But the actual VREF+ (pin32) is 2.xV, with drifts between power ups. VDDA (pin 33) is 3.3V.What's wrong with the circuit schematic? Can I just remove the resistor (R22) between VREF+ and VDDA? Thanks very much!

Hi,I want a GPIO pin to trigger an SPI transfer. The way that I have figured this should work is:PG3 -> TIM23 -> DMA2 -> SPI1 Here is basically what I have so far:/* Includes --------------------------------------------------------------------------------------------------- */ #include "TypesDefinition.h" #include "SpiHad.h" #include <algorithm> #include <stm32h7xx_ll_spi.h> #include <stm32h7xx_ll_dma.h> #include <stm32h7xx_ll_gpio.h> #include <stm32h7xx_ll_bus.h> #include <stm32h7xx_ll_system.h> #include <stm32h7xx_ll_exti.h> #include <stm32h7xx_ll_tim.h> namespace mopf::sys { /* Static members --------------------------------------------------------------------------------------------- */ static SpiHad* g_SpiHadLocal; SpiHad* const& g_SpiHad{g_SpiHadLocal}; SpiHad::SpiHad(std::function<void()> SpiCallback, std::function<voi

I'm trying program FLASH via serial bootloader using  STM32WL55 USART1 The an2606 indicates thatUSART-RX is PA10 pin, connected to CN7-32USART-TX is PA9 pin, connected to CN10-19I connected the BOOT0 pin to 3.3VIf after reset I send 0x7f to LPUART via ST-LINK VCOMM I get ACK (0x79) backBut if after reset I send 0x7F to PA10 using external FTDI232 adapter I'm not getting anything back.  If I check level of PA9 it shows 200mV (the PA10 is 3.3V) with FTDI connected and 0V with FTDI disconnectedThe loopback test on FTDI is working fine, so I don't suspect FTDI malfunctioningI suspect my board is not properly configured, but could not see anything that would affect PA9 and PA10 configuration. Can it be an error in a board documentation, I already spotted one error in table 18, it shows both CN10-35 and CN1-37 connected to PB6, which is probably wrong, one of them must be PB7.

Hi currently i am using  STM32H735G-DK  i need to implement Azure IOT using ThreadX 1. From CubeMX i have generated Drivers for MQTT,DNS,Cloud,DHCP,mdns,sntp in the cloud files where i can update my connection strings of my cloud Configured  Asset I have already created one Azure Asset I need to add those details in cloud folder I have attached file folder structure for your reference2. I referred an example in git hub https://github.com/Azure-Samples/iot-middleware-freertos-samples/tree/main/demoswhere all examples are related to WIFI3. is it possible via Ethernet connectivity instead of WIFI  4. If it is possible what will be changes we need to do so that I can connect to Azure IOT