STM32 MCUs Products

how to get 50 % duty cycle with complementry pulse

i want to generate 50 % duty cycle at freuency (100khz-200 KHz), but i am not getting 50% , i am getting 33-34% duty cycle.this duty cycle change when the frequency change.

STM32H743 - Problem with DAC DMA and SPI Receive DMA when adding the FreeRTos.

HiI am working with a project were i am using two DAC channels and a SPI port set to receive mode and I want to use these in DMA mode. I am using the CubeMX to set this up and if I only setup the DAC and SPI in DMA mode, then it works as it should, w...

STM32U5 SDMMC HAL_SD_GetError() error HAL_SD_ERROR_RX_OVERRUN.

This is DMA error: SDMMC_ERROR_RX_OVERRUN meaning Receive FIFO overrun. This typically occurs after about 1 week of normal running. I have a test mode that simulates SD card usage to recreate 100 days of usage in 22 hours.If the SD card is kept on, t...

in STM32h750ib MCU, can the classic CAN(CAN2.0) IC can be used instead of using CAN-FD IC?

How to read a voltage value, working with a single-ended ADC in STM32H743?

Hi there! I’m an electronic engineering major, and I currently enrolled in a graduation side-project activity in robotics and mechatronics. During this process, I’m supposed to work with STM32H743. By now, I need to read a single-ended voltage value ...

bank swapping in stm32h745

Hi, I want to use OTA in stm32h743, for that I need to switch between two bank after flash write, as per reference manual//HAL_FLASH_OB_Lock(); HAL_FLASH_OB_Unlock();   /* Set OPTSTRT Bit */ SET_BIT(FLASH->OPTSR_PRG, FLASH_OPTCR_SWAP_BANK); /* Wa...

f_mount() is returning FR_NOT_READY.I am not able to proceed. Using f401re board and sd module to develop a code on to read and write on sd card using spi .

Calibration issue on STM32H750 - DIV256 versus DIV1

The calibration at a DIV256 works most of the time but some MCU must be calibrated with a DIV1 otherwhise I get an offset of zero. We use VREFBUFF as reference. We try to swap an MCU with good result (DIV256 worked). One MCU calibrated but with error...

Hardfault in STM32L4S5ZI with IAR

Hi ST Community,I have a project running on STM32L4S5ZI and I use IAR for compiling and flashing of the firmware. My application has a file system (a 16MB flash memory) that is interfaced with the STM32 using an SPI interface. The device also has a w...