STM32 MCUs Products

Hi, i am new to stm32 and i got the project to rotate stepper motor using stepper driver .

i am using stm32f103 controller with opto -circuit to rotate my motor . But my motor is rotating only in forward direction even if i make my direction pin SET or RESET . BUT i need to make my motor to rotate in both forward and reverse direction. Ca...

DMA CCR1 CCR2 conflict I can have signal on PB6 or PB7 but not both on one time. by changing CCR1 and CCR2 arrangement. CCR1, CCR1 =signal on PB6 CCR1, CCR2 = signal on PB7 CCR2, CCR2 = signal on PB7 CCR2, CCR1 = signal on PB6

Can the STM32 Power Shield (LPM01A) be triggered on AND off?

The X-NUCLEO-LPM01A Power Shield can be triggered by the target device to start acquisition, using the D7 pin. Can it also be triggered to stop acquisition?Also, my power shield is currently running v1.0.1. The latest version of the firmware is 1.0.6...

Using SWO with built-in stlink on nucleo H743ZI2 board

I'm having trouble getting SWO to work using openocd on the NUCLEO-H743ZI2 board. I've removed SB26 as per the user manual for this board. This should leave the SWO pin (PB3) connected to the stlink SWO, meaning I can get ITM output over the usb conn...

STM32H7xx - PLL input frequency range settings

Hello,this is a description of PLL settings from a reference manal00: The PLL1 input (ref1_ck) clock range frequency is between 1 and 2 MHz (default after reset)01: The PLL1 input (ref1_ck) clock range frequency is between 2 and 4 MHz10: The PLL1 inp...

Help setting up a comparator and counter to count frequency of 0-3.3V square wave input

HelloI am using a STM32L476VG. I want to use pin PC4 (named 'comp_negative') and PC5 (named 'comp_positve) for comparator inputs. Reading through 'stm32l4xx_hal_comp.c' it gives some idea how to set this up. I have also seen someone else has had a si...

Enable XIP and write/erase external flash concurrently

Hi ST,​I'm using STM32H723 with mx25lm51245g​ to test XIP feature, we want to run the program in the external flash, in the meantime we want to write/erase external flash.​We found that once the XIP feture is enabled (memory mapped mode), if we try t...

Is it possible to monitoring local or static variables using SWV ?

How to monitor Static of local variables using SWV?