STM32 MCUs Products

Hi ST teams,I use STM32G473VET3 on my design. On the datasheet, SPI4 had 3 NSS pins hardware: PE3, PE4 and PE11.If I use other GPIO excluding for the NSS pin function, there are any potential issue?Ex: SPI bus can not work at maximum speed.On my design, I use SPI4 is master and PF2, PF9, PE3, PE4, PE5 for slave chip select function.Thanks. 

I have Nucleo-H743ZI, on which two pins are configured for ADC reading { PB0(CH9) & PB1(CH5) }with circular DMA continuous conversion mode, but only PB1 is able to read data when  HAL_ADC_Start_DMA(&hadc1, (uint32_t *)ADC_Data, 2); starts reading the data in continuous conversion mode,the configured ADC settings are as follow: static void MX_ADC1_Init(void) { /* USER CODE BEGIN ADC1_Init 0 */ /* USER CODE END ADC1_Init 0 */ ADC_MultiModeTypeDef multimode = {0}; ADC_ChannelConfTypeDef sConfig = {0}; /* USER CODE BEGIN ADC1_Init 1 */ /* USER CODE END ADC1_Init 1 */ /** Common config */ hadc1.Instance = ADC1; hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV32; hadc1.Init.Resolution = ADC_RESOLUTION_12B; hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE; hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV; hadc1.Init.LowPowerAutoWait = DISABLE;

Hi everybody,I'm currently experimenting with an STM32F446. I want to create an HMI.For this, I have a screen (320x240) and a radio module on a boardThe screen is controlled via SPI DMA to download images quickly.The radio module uses two EXTIs to detect the reception of a radio message.When the program starts, and even afterward, I draw images on the screen. But when a message arrives, the EXTI is triggered. If the DMA was transferring data, it crashes.In debug mode, I notice that the program enters an infinite loop without exiting.Do you know why the DMA doesn't finish its task when an EXTI arrives, and especially how I can fix this?I considered turning off the EXTIs during a DMA transfer, but I can't do it.Here is the code that handles the DMA when I draw an image://*****************************************

Subject: Help with USB MSC using USBX + FileX on STM32H573RIT6 (UX_ERROR during host_stack_initialize) Hello ST Community, I'm currently working on a project using the STM32H573RIT6, and I’m relatively new to this STM32H5 series. I’m trying to implement a USB MSC (Mass Storage Class) host using USBX with FileX, and I’m using STM32CubeMX for configuration and STM32CubeIDE for development. Importantly, I’m working without any RTOS – this is a bare-metal (standalone) implementation, so I'm not using ThreadX or any other RTOS. However, I'm encountering an issue during the USBX host stack initialization. Specifically, the function ux_host_stack_initialize() returns UX_ERROR, and based on debugging, it appears to be related to insufficient memory allocation. Here’s what I’ve done so far:

Hi Expert,Good day.STM32F412ZGT6 are come in Reel packaging, I need the tray dimensions to ensure the tray fits properly in the pick-and-place machine. What is the feeding direction and pitch dimension? Could you help me locate the tray drawings for the STM32F412ZGT6 with the 144-LQFP (20x20x1.4 mm) package?I can't find out anything regarding this.Looking for your valuable support.Thank you.Ivan Paul 

Hi, I have been trying to study how to use the N657X0 Nulceo board. When I tried to test the USART of the board with an FSBL project, there was no print on the serial monitor, and I could not find the reason. Could somebody check what the problem is with my project?  I have attached my projects below.   

Hi,I have been using Tim11 general purpose timer in Nucleo-f410rb micro controller board to blink an led at a delay of 1 second but there is a deviation of 18 ms in it. which have a 16 bit prescaler and 16 bit auto reload counter with it. In the .ioc file the clock configuration section I have set the clock frequency of the APB2 bus timer clock as 100Mhz which is the maximum frequency can be set and the prescaler value as 9999 and Auto reload register value as 9999. Also the datasheet of the board given stm32f410rb datasheet . and the user manual

0Hello,I'm trying to communicate with an ATMOS22 weather sensor using the SDI-12 protocol on an STM32L072 microcontroller. I'm using USART1 in half-duplex mode , configured for 1200 baud , 7E1 parity , and inverted logic , as required by the SDI-12 specification.Despite double-checking both my wiring and code — including using a level shifter between the sensor and the STM32 board — I'm not receiving any response at all from the sensor. The dataReceived flag is never set, and the log consistently shows "SDI-12 Response: TIMEOUT" after each command.Here's what I've done so far:Properly implemented the break (15ms LOW) and mark (12ms HIGH) signals before each command. Used GPIO toggling to simulate break/mark timing before switching back to UART mode. Configured USART1 for half-duplex mode , with TX/RX inversion enabled . Used HAL_UARTEx

Problem Description:MCU Model: STM32H723VGT6DMA Configuration:DMA1/DMA2 handles 15 DMA channels in total:5 UARTs (TX + RX)4 additional UART RX channels1 PWM channel (TIM15 CCR1 via DMA)Observed Failure:After 10–60 minutes of normal operation, ​all peripherals using DMA2 stop functioning:​UARTs: RX overrun errors occur (ORE flag set in ISR).​PWM (TIM15 CCR1):DMA circular mode remains active (Half/Complete Transfer interrupts trigger normally).SxNDTR counts correctly, but ​CCR1 register data never updates (verified via debugger).​No DMA Error Flags:TEIF (Transfer Error), 

[Inquiry Regarding Large-Scale Library Operation on STM32H7-Based System] MCU: STM32H7 Series (Planned) OS: FreeRTOS Memory Configuration: External SDRAM External Serial Flash (QSPI) Our company is planning to utilize large-scale libraries. We would like to inquire about how to operate such libraries within the STM32 environment, as outlined below.If there are any official ST documents or reference materials related to the following items, please kindly share them as well. Q1. Use of Large Static Libraries (.a)The size of the code and data in the library is expected to exceed several megabytes.In such cases, what is the general approach for loading and executing large libraries on STM32? Q2. Considerations for Using External SDRA

Hello, we started programming on the NUCLEO-G431RB breadboard equipped with the STM32G431RB processor.We therefore created a new program configured on the processor in question using STM32CubeMX. However, during development, we received our electronic board, which we equipped with the STM32G431CBU6 processor. To continue our development on it, we had to change the processor.We therefore returned to STM32CubeMX to modify the .ioc file only in "Project Manager." We don't have control over the "MCU Reference" line to switch from STM32G431RBTx to STM32G431CBUx (CBU6)? How can we port our code?Thank you for your recommendations.

Hi！May I ask the relevant safety experts from ST, I have now applied for the STEVAL-SILKT01 development board from ST Company and have signed the NDA. Are there any demo examples related to the STEVAL-SILKT01 development board? If so, could you provide some information on where I can find these demo examples? Thank you very much!

In the reference manual for the G474, under HRTIM Burst mode control register (HRTIM_BMCR), bit 31 is the BMSTAT register; it gives the current operating status of the burst mode feature. But it states that writing this bit to zero causes early burst mode termination... and I don't think this is actually true. If I try to write to it, it seems to fail and doesn't actually enter burst mode. Does bit zero, BME, control the burst mode CONTROLLER itself, aka, if burst mode entry is possible at all, or is that the actual bit I'm supposed to modify to exit burst mode?  Thank you. 

Subject: Ethernet Init Issue on STM32H573RIT6 with LAN8742Hello ST Community,I’m currently working on a project using the STM32H573RIT6 and I’m using STM32CubeMX and STM32CubeIDE as my development tools. My project setup is bare-metal (no RTOS) and I’ve successfully configured several peripherals already.Now I’m trying to bring up Ethernet using the LAN8742 PHY, which is connected via RMII. However, I’m encountering an issue during initialization — specifically, HAL_ETH_Init() fails and returns the error:HAL_ETH_ERROR_TIMEOUT.Here’s my setup:MCU: STM32H573RIT6PHY: LAN8742 (on custom hardware)Interface: RMIIConfigured using STM32CubeMX (default settings mostly)No RTOS — standalone implementationUsing STM32Cube HAL drivers

Hi, This is my first time here to write a post. I want to implement a system that connnects a STM32H723(master) and four STM32G030F6P6s(slave) via SPI communication. I connected  them and I check the SPI signals from STM32H723(NSS, SCK, MOSI). The Signals are fine.   The problem is that any of STM32G030F6P6 doesn't work. More precisely, I don't know how to setup STM32G030 SPI as a slave mode. I tried to find some example code for STM32G030 SPI slave,  but I could not find anything.    Do you have any solution? I check the related GPIO Port modes(Altenate Function to NSS, SCK, MOSI, MISO), and Check the SPI1->CR1, SPI1->CR2, SPI1->SR (0x00000400, 0x00001700, 0x00000002). This means SPI was enabled, RX FIFO Threshold 8bit/8bit data. TX FIFO Empty). When I Wrote to SPI1->DR(this means writing to TX FIFO) SPI1->SR changed to 0x00018000. This means Frame Error in TI mode(which was

Hi everyone,I'm new to bootloader development and currently working on my first STM32 bootloader project using an STM32F103. I’m trying to make a minimal bootloader that simply jumps to an application located at 0x08001000. There’s no USB, no UART, no DFU — just a basic check and jump.#define APP_ADDRESS 0x08001000 typedef void (*pFunction)(void); pFunction JumpToApplication; uint32_t JumpAddress; int main(void) { HAL_Init(); SystemClock_Config(); MX_GPIO_Init(); if (1) { HAL_GPIO_WritePin(CHIP_LED_GPIO_Port, CHIP_LED_Pin, GPIO_PIN_SET); HAL_Delay(100); HAL_GPIO_WritePin(CHIP_LED_GPIO_Port, CHIP_LED_Pin, GPIO_PIN_RESET); HAL_Delay(100); __disable_irq(); HAL_RCC_DeInit(); SCB->VTOR = APP_ADDRESS; JumpAddress = *(__IO uint32_t*)(APP_ADDRESS + 4); JumpToApplication = (pFunction)JumpAddress; __set_MSP(*(__IO uint32_t*)APP_ADDRESS); JumpToApplication(); } while (1) { HAL_GPIO_TogglePin(CHIP_LED_GPIO_Port,

Hi allI have an IIR filter design with 7 coefficients. (For feed-forward and for feed-back)Regularly all the coeffs are between -1 to +1So I Just multiply each by 2^15 to get it in q1.15 format.However, now, the feedforward coeffs are very small (0.0000000001 or something like that)and the feedback coeffs are up to 30.How to initialize the system to get it work?

If ADC1 is continous mode, what's the maximum value for R14? I think the higher the R14 the better, but if too high, the ADC1 value may lower than real.

Greetings,In my application i have initialized STM32F205RG with USB High Speed Host for detecting USB Key board and I2C2 for communicating with DS3231 RTC Module. RTC module works prefectly when i don't initialize USB HS peripheral, but when both initialized in the project then I2C2 always sends me HAL_BUSY state.Is there any solution or work around for this problem ? I am using cube mx for code generation and initialiazation. Thanks. 

Hello GaysI'm trying to read the gyroscope ICM 20948, specifically register 51, but I'm not getting anything. Can someone take a look and give me some suggestions?

I can c in RM0033 (Rev9) Figure 18, that PA2 is connected with low impedance to a diode to V_DD, if PA2 is configured as analog input...In Doc ID 15818 Rev 9 I see that R_ADC is at least 1.5kR...If I connect PA2 in analog mode directly to 5V: Would I create a high current through that diode to V_DD (in my case 3.3V)? Or would the current be less than 1mA (1.4V/1500)? Google's Gemini and DeepSeek say, that that would damage the ADC or its MUX...In RM0033 (Rev9) Figure 13 it looks like, I can still read the analog value on PA2, if PA2 is configured as digital output (open drain and BSRR|=(1<<2)).Should I connect PA2 via 50kR to the difficult voltage? I cannot use a voltage divider, because that would interfere with the external pull-up resistor at PA2... I try to read CC1 of a USB-C host port... and DeepSeek says, that the USB-C device might possibly decide to connect CC1 to 5V, although I hoped, that the USB-C cable would not allow that...

Hello everyone,I am working on a system based on the STM32H747BIT6 MCU and do not plan to use the DSI interface. I have searched through various forums but still have some doubts about the proper power pin configuration when DSI is not in use. Here is what I have so far:VSSDSI: Connected to GNDVCAPDSI: Connected to VDD12DSI (capacitor not required)VDD12DSI: Uncertain about the correct connection. I would like to avoid using an LDO to step down from 3.3V to 1.2VDoes anyone have experience with this setup or any recommendations on the best approach for VDD12DSI?Thanks in advance.

Hello,I am trying to communicate with an SDI-12 sensor using STM32L072CZY6TR. I'm using UART half-duplex with the following configuration:Baud rate: 1200Word length: 7 bitsParity: EvenStop bits: 1My questions:Do I need a UART to SDI-12 converter module, or can I connect the sensor directly to the STM32?Do I need signal inversion, and if so, should it be done in hardware or software?What pull-up resistor value is recommended for the SDI-12 data line?My current understanding:SDI-12 uses inverted logic compared to standard UARTSDI-12 requires a pull-up resistor on the data line

My application senario: sample the sensor signal every second, and transmit through UART. to save power supply, I select ADC single mode, and used average as filter.void ConfigureADC(void) { ADC1->CFGR1 |= ADC_CFGR1_AUTOFF; ADC1->CFGR2 = (ADC1->CFGR2 & (~ADC_CFGR2_CKMODE)) | (ADC_CFGR2_OVSE | ADC_CFGR2_OVSR_2 | ADC_CFGR2_OVSR_1 | ADC_CFGR2_OVSR_0| ADC_CFGR2_OVSS_2); ADC1->SMPR |= ADC_SMPR_SMP_0 | ADC_SMPR_SMP_1 | ADC_SMPR_SMP_2; ADC1->CR |= ADC_CR_ADEN; ADC->CCR |= ADC_CCR_VREFEN|ADC_CCR_TSEN; } unsigned int SignleADC(unsigned long int channel) { ADC1->CHSELR = channel; ADC1->CR |= ADC_CR_ADSTART; while ((ADC1->ISR & ADC_ISR_EOC) == 0) { } ADC1->CR |= ADC_CR_ADSTP; return ADC1->DR; } unsigned int Sensor_Read(void) { unsigned int gas[128]; unsigned long int read=0; for(unsigned char i=0;i<128;i++) gas[i] = SignleADC(ADC_CHSELR_CHSEL5); for(unsigned char i=0;i<128;i++)

 I've be trying to learn CAN for the past few days for a project using 2 Nucleo F103RB and 2 CAN transceivers. I made a very basic code using normal mode and without using RTR. Now I want to learn how to code using RTR, can someone help me please?(I already know what is RTR, I want to use it and can't find where to learn it).