STM32 MCUs Products

Hi.I am currently developing a motor control platform using STM32G441 and am facing a problem.I am controlling a 3-phase motor with TIM1 based on packets from Half duplex USART1 (PB6), but when I Start TIM1 CH2, the USART1_TX pin, which should be unrelated, is pulled down to low level.Specifically, PB6 is pulled down by executing HAL_TIM_PWM_Start_(&htim1, channel2) or by setting the AF register and MOE register (output enabled).This occurs only on CH2 and is not reproduced on TIMx CH2 (inverted) or other channels.No short circuit in the board pattern is observed.In half-duplex, pull-down to low level during Idle section is a fatal problem.I have investigated using an oscilloscope, and it behaves as if the TIM1 CH2 pulse is shorted in the MCU with some resistance.Is this problem an errata of the STM32G441?Thank you.

I'm running into an issue on two boards (an STM32H735 Discovery Kit) and a custom board with an H743. #include <stdio.h> #include <zephyr/kernel.h> int main(void) { while (1) { printf("Hello there, world!\n"); k_msleep(1000); } return 0; }If I flash the program, it runs fine. If I start debugging it, it SIGTRAPs at 0xA05F0000 inside the k_msleep() (around sys_clock_tick_get_32()). Even though my debugger says the program is stopped, it continues running doing the printf() and waiting the 1 second in each loop. I'm using VSCode with the Zephyr IDE plugin on a mac - using either stm32cubeprogrammer or OpenOCD as my runner. I'm connected to my custom board with an STLinkV3. I'm using the inbuild STLink on the Discovery Kit board.I've googled and see a few references to 0xA05F0000 with similar bugs, but nothing that's a definitive answer. Does that address me

Hello everyone, I’m using an STM32L412K8 microcontroller with an external 32.768 kHz LSE crystal to operate the RTC for real-time clock functionality. However, I'm facing two issues: Second jumps: the seconds skip multiple values out of order (for example, jumping from second 9 to second 16). It consistently jumps by 7 seconds every 10 seconds. The attached image shows some of these jumps. Irregular seconds counter: The seconds count exceeds the normal range, reaching values above 60 (for example, 89) before rolling over to the next minute, as shown in the attached images.What are the possible solutions I can try?, Any tips or suggestions would be very helpful.Thank you in advance!

Hello.I am finishing a project where I measure voltage with an ADC using the STM32L431 and, for greater accuracy, I am using the OPAMP (PA0 = ADC1_IN0_VINP and PA3 = ADC1_IN_VOUT). For the STM32L431 on the STM32CubeMX, when activating the OPAMP in "Follower" mode, it is possible to select the "OPAMP1 Output Single-ended" option on the ADC1 to internally connect the OPAMP1_VOUT to the ADC1_IN8, and I can read it perfectly on the PA3 (ADC1_IN8). Knowing more about the ST family of microcontrollers, I realized that the STM32U545 has more features in terms of safety and lower power consumption, so I decided to change the microcontroller of the project and start using the STM32U545. However, on the STM32U545, when activating the OPAMP in "Fol

MCU:        STM32H753XIH Tool:         STM32CubeIDE v1.18.1 FW Pkg:   FW_H7_V1.12.1   I have an in-house designed board that has an FPGA connected to the FMC bus. The FPGA uses a simple SRAM interface with Address (7:0), Data (31:0), Chip Select, Read and Write signals. The FPGA has 8 internal 32 bit registers with an address decoder and provides the 8 internal chip selects for these registers from the address bus. I hard Fault every time I attempt to access the FPGA registers. FMC Setup: hsram1.Instance = FMC_NORSRAM_DEVICE; hsram1.Extended = FMC_NORSRAM_EXTENDED_DEVICE; /* hsram1.Init */ hsram1.Init.NSBank = FMC_NORSRAM_BANK1; hsram1.Init.DataAddressMux = FMC_DATA_ADDRESS_MUX_DISABLE; hsram1.Init.MemoryType = FMC_MEMOR

Any step-by-step guide on how to configure STM32CubeIDE to redirect `printf()` output to a virtual COM port using UART (serial communication), and then monitor that output using the STM32CubeIDE’s built-in Terminal view?  I'm using a Nucleo-F411Re on Windows 10 machine. 

Hello everyoneI am a begineer with stm32 MCUs. I studied through  youtube videos and datasheets that we can program STM32H750 using STlink V3 and to do so the MCU should be put into bootloader first. To do so the boot pin must be pulled low for which dev boards have a button that we can press at power up or reset.I don't want to use the button in my custom hardware design. I want the boot pin to be pulled low by the programmer (ST link v3) or atleast be piulled low automatically. I want to use tag connectors to programe my boards.How can I automatically put STM32H750 into flash mode (boot pin pulled down) when STlink is connected.Thanks for your help. 

Hello World;My Setup:Nucleo F767ZI BoardBOOT0 pulled highSCL/SDA on PB6/PB9 connected to Raspberry Pi I2C-1 and Saleae Logic Pro 8Nucleo board powered via USB from Raspberry PiGoal: Using ROM Bootloader over I2C for firmware updates (later on custom hardware)Problem: I2C hangs after issuing Mass Erase command     Send: 0x45 0xBA Erase-NS CommandReceive: 0x79 ACKSend 0xff 0xff 0x00 Special EraseReceive for ACK or NAK hangs while sending the I2C device address.AN4221 says "Some products do not support the mass erase featur

Hello,I’m working on a custom board based on the STM32H753IITx and I'm trying to access a microSD card via USB_OTG_HS using the USB Mass Storage Class (MSC). I've read this post, which is close to my use case, but unfortunately, I haven’t been able to solve my issue.Here is a summary of my configuration in STM32CubeMX:SDMMC1 (SD card interface):Mode: SD 4-bit wide busClock transition: Rising edgeClock output when idle: Enabled (Power save disabled)Hardware flow control: DisabledClock divide factor: 1 (which results in 200 MHz / (2 × 1) = 100 MHz SDMMC_CK)External transceiver: Not presentAll GPIOs maximum output speed to Very HighAll GPIOs except SDMMC1_CK have pull-upU

Hello,Using RS485 for modbus communication.It is observed that, if we disable STOP2 mode then RS485 communication works fine (no frame loss). but asa we keep STOP2 mode then at the time of wakeup I found some frame loss.#define RS485_TX_ENABLE() HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_SET) #define RS485_RX_ENABLE() HAL_GPIO_WritePin(GPIOB, GPIO_PIN_12, GPIO_PIN_RESET) static void MX_LPUART1_UART_Init(void) { hlpuart1.Instance = LPUART1; hlpuart1.Init.BaudRate = 115200; hlpuart1.Init.WordLength = UART_WORDLENGTH_8B; hlpuart1.Init.StopBits = UART_STOPBITS_1; hlpuart1.Init.Parity = UART_PARITY_NONE; hlpuart1.Init.Mode = UART_MODE_TX_RX; hlpuart1.Init.HwFlowCtl = UART_HWCONTROL_NONE; hlpuart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE; hlpuart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT; if (HAL_RS485Ex_Init(&hlpuart1, UART_DE_POLARITY_HIGH, 0, 0) != HAL_OK) { Error_Handler(); } if

Hello everyone,I'm currently working on a UART communication protocol using STM32 USART in multiprocessor mode (MME / Address Mark) over RS485. My goal is to receive variable-length data frames only when the address matches, and use DMA + IDLE interrupt to detect the end of each frame.:wrench:Frame format:- First byte: 9-bit address word (MSB = 1)- Followed by N data words (9-bit, MSB = 0):white_heavy_check_mark:Setup:- USART configured in 9-bit data mode (no parity)- MME (multiprocessor mode) enabled- Address match set via ADD[7:0]- DMA reception via `HAL_UARTEx_ReceiveToIdle_DMA(...)`- `__HAL_UART_ENABLE_IT(&huart, UART_IT_IDLE)` enabled- IDLE handling expected in `HAL_UARTEx_RxEventCallback()`:cross_mark:Issue:- When MME is **disabled**, IDLE interrupt works correctly, and the RxEventCallback is triggered on frame end.- When MME is **enabled**, the USART correctly detects

I am verifying USB implementation using Nucleo-H7S3L8.When I executed CDC_Standalone in STM32CubeH7RS using the Debug button and ran the Appli code, the function “HAL_PWREx_EnableUSBVoltageDetector()” in ‘MX_USBPD_Init()’ did not return HAL_OK and an error occurred.Within this function, the “USB regulator ready flag (PWR_CSR2_USB33RDY)” is not set, causing a timeout and resulting in a HAL_ERROR.However, when I stop debugging, disconnect the USB cable, and reconnect it, the COM port appears in the Windows Device Manager.I have not made any changes to the contents of CDC_Standalone.The jumper on JP3 on the board has been changed from STLINK to UCPD.What should I do to properly debug USB on this board? 

Previously had issues with TXP flag never clearing for interrupt-driven SPI.  Changed some HAL code and got it to work.Moving on the DMA, the first 8 bytes received match the transmit buffer and the 9th byte matches a byte farther into the transmit buffer.I suspect that the entire DMA buffer is transmitted at the start filling the transmit FIFO and bytes are dropped until the FIFO gains an empty slot and data can once again enter the FIFO.  This seems consistent with the TXP flag not properly clearing when the transmit FIFO is full.   Can anyone tell me what makes the TXP flag not operate?  

I have done a PCB Design with microcontroller STM32L071CZT6 as the mcu. PB15 which is a 5V tolerant pin is connected to a source of 4.9 V with a resistor 270 kOhm in between. I measured the voltage at the PB15 pin to be 4.9 V but, when I set it as Digital Input pin with no pull it does not read HIGH. But, I remember the previous batch of boards with the same design had this pin read HIGH by the same firmware.

Hello, I am trying to write some non-blocking motor driver code for a STM32F401Re board. Currently, I am setting the timers to PWM mode and adjusting the ARR to change the PWM frequency using an IRQ handler. This approach is working for TIM3 output, but TIM2 seems to stop outputting after one iteration of the while loop. I've been through the registers and it looks like the CC1IF isn't always being set for TIM2 and I'm not sure why. By adjusting the ARR, shouldn't both timers roll-over after hitting their new max value? I've attached the main file and the A4988 driver file I'm writing. For the A4988 file, the methods in question are A4988_run() and A4988_IRQ_Handler().   Thanks!    

Hi,I'm currently debugging what I think to be a code issue. I have a custom board with all peripherals physically disconnected and a NUCLEO-U575ZI-Q dev kit. The lowest current I see is about 250uA on both setups, with a sawtooth charge/discharge waveform from what I think is the internal switching regulator (consistent when using other stop mode functions). I've implemented a few examples for entering stop mode, and review any application notes I could find for how to handle it. Stop1 and Stop2 both yield current in the ~200uA range, and Stop3 yields about 35uA. The only way I have found to decrease the current the most were changing the "PWR_CR1_LPMS_X" parameters in the HAL_PWREx_EnterSTOP1Mode function:Original: MODIFY_REG(PWR->CR1, PWR_CR1_LPMS, PWR_CR1_LPMS_0);New 1: MODIFY_REG(PWR->CR1, PWR_CR1_LPMS, PWR_CR1_LPMS_1); -> Gave me <200uA on my custom boardNew 2: MODIFY_REG(PWR->CR1, PWR_CR1_LPMS, PWR_CR1_LPMS_2); -> Gave me 9

Hello everyone,I'm facing a HardFault issue when jumping from a bootloader to an application on the STM32L476RG.The fault occurs right at the beginning of the application, specifically at the instruction bl __libc_init_array inside the Reset_Handler (from startup_stm32l476xx.s).Memory layout:Bootloader: starts at 0x08000000, size: 12 kBApplication: starts at 0x08004000, max size: 150 kB (currently using ~95%)RAM usage: around 30%Bootloader jump sequence:typedef void (*p_function)(void);static void app_start(boot_t *self) {HAL_DeInit();self->boot.address = *(volatile uint32_t *)(self->address.app + 4);self->boot.jump_to_app = (p_function) self->boot.address;__set_MSP(*(volatile uint32_t *) self->address.app);SCB->VTOR = self->address.app;self->boot.jump_to_app();}Here, self->address.app = 0x08004000.The bootloader reads the application’s ini

Hi all,currently iam using the stm32h757 controller.i want to use the FMC on both cores, in SRAM mode with this config: hsram1.Instance = FMC_NORSRAM_DEVICE; hsram1.Extended = FMC_NORSRAM_EXTENDED_DEVICE; /* hsram1.Init */ hsram1.Init.NSBank = FMC_NORSRAM_BANK1; hsram1.Init.DataAddressMux = FMC_DATA_ADDRESS_MUX_DISABLE; hsram1.Init.MemoryType = FMC_MEMORY_TYPE_SRAM; hsram1.Init.MemoryDataWidth = FMC_NORSRAM_MEM_BUS_WIDTH_16; hsram1.Init.BurstAccessMode = FMC_BURST_ACCESS_MODE_DISABLE; hsram1.Init.WaitSignalPolarity = FMC_WAIT_SIGNAL_POLARITY_LOW; hsram1.Init.WaitSignalActive = FMC_WAIT_TIMING_BEFORE_WS; hsram1.Init.WriteOperation = FMC_WRITE_OPERATION_ENABLE; hsram1.Init.WaitSignal = FMC_WAIT_SIGNAL_DISABLE; hsram1.Init.ExtendedMode = FMC_EXTENDED_MODE_DISABLE; hsram1.Init.AsynchronousWait = FMC_ASYNCHRONOUS_WAIT_DISABLE; hsram1.Init.WriteBurst = FMC_WRITE_BURST_DISABLE; hsram1.Init.ContinuousClock = FMC_

Board: stm32h753zi nucleoFirmware & CubeMX: latest versionI have configured the adc to continous conversion and DMA output. The initialization fails in main.c in HAL_ADC_INIT. I stepped through the HAL lib and saw that LL_ADC_IsInternalRegulatorEnabled returns the HAL_ERROR.The docstring of this function says /* Verification that ADC voltage regulator is correctly enabled, whether */ /* or not ADC is coming from state reset (if any potential problem of */ /* clocking, voltage regulator would not be enabled). */ if (LL_ADC_IsInternalRegulatorEnabled(hadc->Instance) == 0UL)I do not find any documents online which describe how the clock frequency of the adc should be set up. Could you please give me a hint.

im using STM32H753VIT6 MCU.I'm try to connect device using SWD in STLINK debugger but it will show "Error: Unable to get core ID" this Msgim checked MCU input voltage,im getting 3.3v .input power is oknow how can i debug this issue.SWD pins properly connected Vcc,Swclk,Swdio,Gnd into stlink debugger but why im getting this msg,kindly clarify

 STM32L071CBT6 GPIO PB15 Input Not Responding to 5V Signal from Buck ConverterHello everyone,I'm using the STM32L071CBT6 microcontroller and facing an issue with reading a digital input on GPIO pin PB15.What I'm Trying to Do:I’m using a buck converter with a 5V output to indicate the power status. The 5V output from the buck converter is connected to PB15, which is configured as a digital input on the STM32. Setup:Buck converter 5V output = GPIO PB15Measured with multimeter: PB15 shows 5V when buck converter is ONPB15 is configured in firmware as an input pin (floating or pull-down)Problem:Although PB15 is reading 5V on

Hi, I was trying to test the feature of "Level 2 flash lock" on my custom board. I'm having an unexpected behaviour.My total application consists of a bootloader responsable to load an application via CAN BUS through a custom communication protocol.Now, If I load my application program via CAN (via bootloader), the MCU can not set itself to level2 but remains set to level 1. If I transfer the same application with JTAG, the MCU can set itself to level 2 protection and any attempt to connect to it is correctly disabled. (in level 1 I can still connect by erasing the whole chip content). To give further informations, here is the code responsable to set level 2 protection implemented:FM_ClearFlags(); FM_Unlock(); flashSts = FM_CheckProtectionStatus(); if(flashSts == FM_FLASH_NOT_PROTECTED) // check current protection status { FM_SetOBConfig(); flashSts = FM_CheckProtectionStatus();

Hello,I read the UID from STM32L031K6P6 and each device returns the same result: 0x14473332, 0x38363437, 0x0.I read the value from the address given in RM0377 (0x1FF8 0050).Is the address given in RM0377 correct?I am attaching screen shots from CubeProgrammer.

I use the STM32CubeIDE platform and I need to insert into my project a routine that was able to update my firmware.What I need to understand is:I write the routine then I place it into the ITCMRAM and I run it; does it work ?Have I only to load into the flash (starting from the sector 0) the ELF file of the new firmware ?  Thank you, Carlo

Hi, I was looking at the following paragraph, because I`m trying to select a good crystal for my application, the situation is that I know that one importat point to be aware is that "gain margin ratio" needs to be bigger than 5, so to obtain this "gain marging ratio" the following formula need to be applied (gainmargin = gm/gmcrit), here "gm" is the "oscillator transconductance" (value shown in the image), my question is that if this value is a property of the MCU itself (of course the part of the embedded oscillator), or this "oscillator transconductace" has to be with the crystal used in the test,  because of the "characterization results" that paragraph states.As you can see in the paragraph the data was obtained in this way as the text states "All the information given in this paragraph is based on characterization results obtained with typical external components specified in Table 22 (inluding oscillator transconductance) " So I`m confused becau