STM32 MCUs Products

Hi all! I'm using the Nucleo-H755ZI-Q board and trying to write a simple program where the LED should turn on (and stay on) only when I press the USER button (the blue one on the board). I’ve shared a screenshot of my code below. The code builds and debugs without any errors, but when I run it, the LED just starts blinking on its own... even when I haven’t pressed the button. What’s more interesting is that when I stop the program in the IDE, the LED keeps blinking, and it only stops if I enter debug mode again. I expected the LED to stay off by default and turn on steadily only when the button is pressed. Also, after flashing and starting debug, I only see a "Resume" button instead of "Run"... Not sure if that means something’s wrong or if it’s normal. Any help figuring this out would be great!my program

Dear all, I'm calibrating the STM32G0B0RE RTC clocked by an external 32.768 oscillator using the following guide:https://community.st.com/t5/stm32-mcus/how-to-calibrate-the-stm32-s-real-time-clock-rtc/ta-p/744958Below is my debug code:int main(void) { /* USER CODE BEGIN 1 */ /* USER CODE END 1 */ /* MCU Configuration--------------------------------------------------------*/ /* Reset of all peripherals, Initializes the Flash interface and the Systick. */ HAL_Init(); /* USER CODE BEGIN Init */ /* USER CODE END Init */ /* Configure the system clock */ SystemClock_Config(); /* USER CODE BEGIN SysInit */ /* USER CODE END SysInit */ /* Initialize all configured peripherals */ MX_GPIO_Init(); MX_RTC_Init(); MX_USART1_UART_Init(); MX_I2C1_Init(); /* USER CODE BEGIN 2 */ char msg[256]; strcpy(msg, "********************************************* RTC trimming *********************************************\r\n\r\n"); HAL_UART_Transmit(&huart1, (uint8_t *)msg,

In developing a bootloader and application for an STM32H5 project using STM32CubeIDE v1.19.0, and STM32H5xx HAL Driver v1.5.0.RC1; when I place the ISR at 0x08008200, I can start the debug process but the application appears to be stuck in void SVC_Handler(void) once an interrupt occurs. What's interesting is that if I adjust the ISR location to 0x08008000, or 0x08008400, and define VECT_TAB_OFFSET in system_stm32h5xx.c [along with changing definition of .isr_vector to 0x08008000/0x08008400 in LinkerScript.ld] everything behaves as expected; it's only when setting to 0x08008200 that things break. I previously had a build environment with STM32CubeIDE  v1.15.1 using v1.4.0 STM32Cube MCU package and everything worked fine then. Any guidance on where to look to zero-in on what might be the culprit?

Trying to get a basic sample DAC1 with DMA, triggered by TIM2 working. This should be trivial, works fine on SMT32F3. I'm using a Nucleo-32 SMT32G431.Using Cube IDE. The only non IDE-generated code in main is: /* USER CODE BEGIN 2 */   static uint16_t x[4]; x[0]= 100; x[1]= 1000; x[2]= 2000; x[3]= 3000;   HAL_TIM_Base_Start_IT(&htim2); HAL_DAC_Start_DMA(&hdac1, DAC_CHANNEL_1, (uint32_t*)x, 4, DAC_ALIGN_12B_R);   /* USER CODE END 2 */IOC configuration:DAC with output buffer (verified, works fine in non-DMA mode)circular DMA buffer, 1/2 wordtrigger: TIM2 updateTIM2: set to count up to 500, internal clock (works, verified by reading the clock)Compared to some DAC/DMA examples - everything seems fine (and works on a Nucleo-32 SMT32F3. Please help - this is extremely frustrating and has held up a a project for 3 days.test1.ioc and main.c files attached.Thank you!Paul

Greetings. I am a beginner and an electronic student and I am currently getting my hands on STM32H523. I have created a mcu board in Altium Designer just to control LEDs by GPIO, hopefully to understand more about STM32. I have the PCB fabricated, and the connection for ST Link v2 is SWDIO---SWDIO, SWCLK---SWCLK, GND---GND. I have also connected a wire at the VCC and GND to the 3.3v power supply to power up the MCU. For Boot0, I set it to HIGH since I see people saying that to program the MCU, I need to set it to HIGH. I have soldered everything and connect the board to st link, and I cannot debug. I was hoping if anyone can give me some guide, and here I will attach my schematic so you may spot out any design errors... Thank you very much, understanding the STM32 means a lot to me as I intend to use them in my future advanced projects.    

Hello,I have two questions regarding the STM32U0 series and the RM0503 reference manual:1/ HSISYS Divider ConfigurationIn RM0503, for the STM32U0 series, it is stated that HSISYS is a clock derived from HSI16 after division by a value from 1 to 128.This is shown in Figure 11: Clock Tree (page 157).However, there appears to be no field in the RCC registers to configure this divider.In the "STM32U0 – RCC Reset and Clock Controller" presentation, an HSIDIV value is mentioned, but this name does not appear anywhere in the RM.The only potentially related fields are HSITRIM and HSICAL in the RCC_ICSCR register, but as far as I understand, these do not perform frequency division in the traditional sense.Could you clarify whether the HSIDIV functionality is present in STM32U0 and, if so, how it is configured?2/ Inconsistency in RCC_CFGR Description (SW Field)In the RCC_CFGR register description for the SW field, the RM states:"The setting is forced by hardware to 000 (HSISYS selected) whe

Hi all,I'm trying to get one pulse mode working on the TIM1 of the STM32H755. The goal is taking a pulse from one pin as a trigger, starting the pulse, counting 32 clock cycles on another pin, and then resetting the output. This controllers tech tutorial is very close to what I'm trying to do, only he uses the internal clock. Regardless I haven't been able to get even that to work. I might be missing something but I haven't found anything in RM0399 to indicate that anything should be different. One weird thing is that TIM1_CH2 (the TI2FP2 pin) is pulling down the input, which is confirmed by there being a square wave when the wire is disconnected but it immediately vanishes when connected.  I've attached the configuration function for TIM1 below, and in main I call  HAL_TIM_OnePulse_Start(&htim1, TIM_CHANNEL_1); right before the while loop.static void MX_TIM1_Init(void) { /* USER CODE BEGIN TIM1_Init 0 */ /* USER CODE END TIM1_Init 0 */ TIM_SlaveConfigType

Hello,On flash option byte I need to use only one sector. Only Edata bank1 is activate. No other option bytes are required.CubeMx generate MX_FLASH_Init with Edata configuration commented. What other option byte is necessary to select to use Edata on bank1?Can you help me?target: STM32H563ZIstm32CubeMx 6.11.0stm32Cube MCU Package STM32H5 1.2.0 Regards 

I am developing a board using an STM32U535RETQ - 64 pin QFP pkg. The part is an SMPSU capable "Q" variant - although we are only using the STM's internal LDO... NOT the SMPSU.I am using CubeMx 6.14 and StmIDE 1.18 to produce my ioc and compilation.The 14bit ADC1 is performing as expected when set to convert internal signals - Vdd and Vbatt.The signal to be converted is a low frequency DC signal - we're measuring current via a precision sense resistor and instrumentation amplifier.Calibration performed during programme "init" :-  ADC_ChannelConfTypeDef sConfig = {0}; hadc1.Instance = ADC1; sConfig.Channel = ADC_CHANNEL_3; // Ch3 intended- ****************************************** sConfig.Rank = ADC_REGULAR_RANK_1; sConfig.SamplingTime = ADC_SAMPLETIME_12CYCLES; sConfig.SingleDiff = ADC_SINGLE_ENDED; sConfig.OffsetNumber = ADC_OFFSET_NONE; sConfig.Offset = 0; if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) { Error_Handler(); } if ( HAL_ADCEx_Calibr

Dear reader, I attempted to adapt the tutorial outlined in STM32F3348-DISCO HRTIM DMA PWM Sine Wave - STMicroelectronics Community to my STM32G474E-DPOW1 board to create a PWM signal with sinusoidally varying duty cycle using a look up table.Attached is my main.c with the MX_HRTIM1_Init function. If there's any more information required please let me knowAny help would be greatly appreciated, thankyouOliver

I AM USING STM32F446RCT6 MICROCONTROLLER HAL_TIM_OC_Start_IT(&htim8, TIM_CHANNEL_2); HAL_TIM_PWM_Start_DMA(&htim2, TIM_CHANNEL_4, (uint32_t *)gPWMData1, gPWMData1LastIdx); // trans is generated HAL_DMA_Start_IT(&hdma_tim8_up, (uint32_t)&gPWMData2[row], (uint32_t)&(GPIOB->BSRR), gPWMData2LastIdx); void HAL_TIM_PWM_PulseFinishedCallback(TIM_HandleTypeDef *htim) { if (htim == &htim2) { if(circular==0) { HAL_TIM_PWM_Stop_DMA(&htim2, TIM_CHANNEL_4);{ IT WORKS IN NORMAL DMA MODE BUT NOT IN CIRCULAR DMA SYNCING TIM2 AND TIM8 IS QUITE DIFFICULT HOW TO DO IT? BECAUSE AFTER STOPPING GAP ARISES WHICH IS THE ISSUE CONTINUOUS COMMUNICATION REQUIREDhtim2.Instance = TIM2; htim2.Init.Prescaler = 1-1; htim2.Init.CounterMode = TIM_COUNTERMODE_UP; htim2.Init.Period = 50-1; htim2.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1; htim2.Init.AutoReloadPreload =TIM_AUTORELOAD_PRELOAD_ENABLE; if (HAL_TIM_Base_Init(&htim2) != HAL_OK) { Error_Handler(); } s

I'm using an STM32U5 processor to communicate with a sensor over SPI, and I am unable to get the SPI transfer and reception to work while putting the device into STOP 0/1. The datasheet and reference manual state that this is possible with SPI1 in STOP 0/1, but the device never wakes up and the transfer doesn't complete. I am using SPI1 and HAL_SPI_TransmitReceive_DMA, along with linked list DMA mode. I have gotten the transfer to work successfully in SLEEP, with the device waking after all transfers are complete, but it does not work when putting the device into STOP 0 or STOP 1 mode. Are there any other bits that need to be set to enable STOP mode functionality with SPI1? I am using MSIK to clock the SPI, and STOP mode is working for other parts of the application (RTC, EXTI). Thank you.

Hi there, I try to create a C++ project for Nucleo-u575ZI-Q using STM32CubeIDE but seems only C files are generated. I always choose C++ in Targeted Language, like the image shown below, when starting a new project. I just wonder if there is something missing. Thanks for the help! 

I am recently working on USB CDC in STM32F407 and i have the following doubts:Based on my understanding 64  bytes can be send using CDC_Transmit_FS, so can we give a array of some size which is greater than 2KBytes and DO we need to do any chunking here ?Is the data send via USB CDC is always 64 bytes or can we configure it if yes How can we configure it to transmit more bytes?So CDC_Recevice_FS in usb_cdc_if.c is a application hook function which is called for every 64 byte. Is these configurable let us say i want to call these function only when 2KBytes is received?What is the maximum data that can be received and send using USB_CDC Functions.

Hello, I spend a lot of time to tried running HW SPI on H523CET6.  On the other mcu like F411 it work without any problems. In this case SPI work only when I do it in software mode://===================================================================================== #define DO_LO HAL_GPIO_WritePin(LCD_MOSI_GPIO_Port, LCD_MOSI_Pin, GPIO_PIN_RESET); #define DO_HI HAL_GPIO_WritePin(LCD_MOSI_GPIO_Port, LCD_MOSI_Pin, GPIO_PIN_SET); #define CLK_LO HAL_GPIO_WritePin(LCD_CLK_GPIO_Port, LCD_CLK_Pin, GPIO_PIN_RESET); #define CLK_HI HAL_GPIO_WritePin(LCD_CLK_GPIO_Port, LCD_CLK_Pin, GPIO_PIN_SET); //===================================================================================== static void Transmit_Byte(uint8_t transfer){ //========================================================== #define HW_SPI //============== #ifdef HW_SPI extern SPI_HandleTypeDef hspi1; HAL_SPI_Transmit(&hspi1, &transfer, 1, 100); //========================================================== #else u

I configured SYSCLK to 480 MHz and set the I2C1 peripheral clock frequency to 120 MHz. For I2C1's timing settings, I selected Fast Mode Plus (1 MHz) and applied the timing register value 0x0050174F, the setting about maximum output speed of SDA and SCL are Very High.However, when observing the I2C1_SCL line with a logic analyzer, the actual output clock frequency is only 890 kHz.

Hi all,I’m working with an STM32H745 controller and an external ULPI PHY (FUSB2805, pin-compatible with STULPI01A). All hardware connections are verified and correct – the PCB layout and power rails are within spec, and the ULPI lines are as per the datasheets/reference.Problem:If I configure the USB peripheral for HS External PHY and set the speed to 12Mbps (Full Speed), the port is detected and data transfers work using the external PHY. but only when the USB Clock Mux is set to RC48 (internal 48MHz) If I select 480Mbps (High Speed) mode (again with HS external PHY and same clock settings), USB does not work. The host gives a "device descriptor request failed" error during enumeration. For troubleshooting, I have tried selecting both RC48 and a 60MHz clock from PLL1 and PLL3 as the USB clock source, but the result is always the same: it fails to enumerate as a high-speed device.Could anyone clarify why HS mode fails at 480Mbps even though Full Speed works?What is the correc

Dear friends, I am playing around with NUCLEO-H745ZI-Q.I generated example motor control project from en.X-CUBE-MCSDK-FUL_6.4.0 for CubeIDE v.1.18.1. This example project utilizes CM4 core. Clock frequency for CM7 core can be twice higher than the clock frequency for CM4. Therefore, I believed that CM7 core can run code twice faster than the CM4. I use GPIO Output to measure code execution time on the oscilloscope.To estimate completion time, I use a code in a while() like this: HAL_GPIO_TogglePin(GPIOK, GPIO_PIN_0);Ialphabeta = MCM_Clarke(Iab);HAL_GPIO_TogglePin(GPIOK, GPIO_PIN_0);HAL_Delay(100); I/O pin is in “Very High Speed Mode”. So, running it on CM4 @240 MHz, I get:-         630 ns without optimization;-         230 ns with FAST optimization; Surprisingly, after migrating code on CM7@480 MHz, I get worse results:-   &nbsp

Hi all,I'm designing STM32N655L0 based board and I've one question.I'm using XSPI1 and XSPI 2 peripherals.XSPI2->Octa SPI mode, NOR FlashXSPI1-> SDRAM, Hexa SPISo my question is can I use unused CS, NCLK pins as an IO?I just wanted to be sure. BR

Hi,I want to increase the amount of RAM for my application, but I noticed that the NPU seems to be using memory from address 0x34100000 (SRAM2) in the sample application it is based on. Where can I change this? Are there any limitations to the memory that can be used? BR,Artur 

Hello,the following code is generated by CubeMX 6.11.1 in module stm32l4xx_it.c:/** * @brief This function handles TIM1 trigger and commutation interrupts and TIM17 global interrupt. */ void TIM1_TRG_COM_TIM17_IRQHandler(void) { /* USER CODE BEGIN TIM1_TRG_COM_TIM17_IRQn 0 */ /* USER CODE END TIM1_TRG_COM_TIM17_IRQn 0 */ HAL_TIM_IRQHandler(&htim1); HAL_TIM_IRQHandler(&htim17); /* USER CODE BEGIN TIM1_TRG_COM_TIM17_IRQn 1 */ /* USER CODE END TIM1_TRG_COM_TIM17_IRQn 1 */ } /** * @brief This function handles TIM1 capture compare interrupt. */ void TIM1_CC_IRQHandler(void) { /* USER CODE BEGIN TIM1_CC_IRQn 0 */ /* USER CODE END TIM1_CC_IRQn 0 */ HAL_TIM_IRQHandler(&htim1); /* USER CODE BEGIN TIM1_CC_IRQn 1 */ /* USER CODE END TIM1_CC_IRQn 1 */ }Interrupts for TIM1 (capture) and TIM17 (global) are both activated, but with different priorities.The problem is that TIM1_TRG_COM_TIM17_IRQHandler() handles also the capture interrupts from TIM1 with same function&n

Hello,I was looking into this wiki tutorial on setting up a UDP echo server by @mƎALLEm , and the clock configuration caught my eye and wanted to confirm a few things.On the nucleo board , the 8 MHz crystal (X3) is not soldered and the 8 MHz clock signal comes directly from the ST-Link MCU (U2) via SB149. I have checked this on a oscilloscope. But in the tutorial , in Section 2.1 Clock configuration Section , the screenshot shows the input frequency set to 16 MHz. As far i am aware this should be 8 , not 16 MHz. Can someone please confirm this? 

I am using a STM32H723ZGT6. I am trying to Trigger an Input Capture on TIM1 Channel 1 by connecting to the output of the Comparator internally,but cannot get the TIM1 Configuration to fire the Input Capture Callback. I've turned on the input capture interrupt function and comparator. HAL_COMP_Start(&hcomp1);   __HAL_TIM_SET_PRESCALER(&htim1, 275-1);   HAL_TIM_IC_Start_IT(&htim1, TIM_CHANNEL_1);   HAL_TIM_IC_Start_IT(&htim1, TIM_CHANNEL_2); The generated Config Code for the Comparator and the Timer are as follows. /* COMP1 init function */ void MX_COMP1_Init(void) { /* USER CODE BEGIN COMP1_Init 0 */ /* USER CODE END COMP1_Init 0 */ /* USER CODE BEGIN COMP1_Init 1 */ /* USER CODE END COMP1_Init 1 */ hcomp1.Instance = COMP1; hcomp1.Init.InvertingInput = COMP_INPUT_MINUS_1_2VREFINT; hcomp1.Init.NonInvertingInput = COMP_INPUT_PLUS_IO2; hcomp1.Init.OutputPol = COMP_OUTPUTPOL_NONINVERTED; hcomp1.Init.Hysteresis = COMP_HYSTERESIS_NONE; hcomp

Hello,I have an STM32F429 project with a 1PPS input (PA0) and a 10Mhz oscillator (PB3) a PWM output (PA1), I can't get a value in my Timer2 it's always at 0, I don't see where my mistake is, can someone help me?Attached file (.zip)Thanks you all.Sébastien.

I designed a custom board using the STM32H725ZGT3. The references I followed include the datasheet, application note AN5419, and the STM32H745ZIT6 Nucleo board design, among others. After powering up the board, I was able to connect to it via ST-Link using STM32CubeProgrammer, and successfully uploaded a simple blink code using STM32CubeIDE. The code worked, and the LED started blinking. However, after a power cycle (i.e., turning the main power off and on again), the board stopped running the code, and the LED no longer blinked. I tried reconnecting with STM32CubeProgrammer, but I received a "Target not found" error. After that, I connected the BOOT pin to 3.3V. This allowed me to connect to the board again using STM32CubeProgrammer, but I couldn’t upload code using STM32CubeIDE. I then changed a setting in the CubeIDE: System Core → RCC → Parameter Settings → Power Parameters → PWR_LDO_SUPPLY After this change, I was able to successfully upload the code. Howe