STM32 MCUs Products

Resolved! Hello, I am debuting on DMA coding and while reading the datasheet (STM32H747 RM0399) on page 695 the table to sum up the different configurations writes memory to memory source as AHB peripheral port. Is it an error or did I misunderstood something?

Resolved! UART data corrupt when reading from terminal, how do I know whether my clock settings are correct?

I've written a simple program which should write data through UART to a PuTTY terminal on my laptop. I have the L4R5ZI Nucleo board, connected to my laptop via USB. I'm only sending 'Hello World \r\n' however, I get 'H9Go]oG #' back every time. All o...

Resolved! __nop() taking more than one clock cycle?

I decided to run an experiment on my STM32F767ZI microcontroller. I turned on the cycle count register (DWT->CYCCNT) and decided to run the program step by step on Keil. I set the clock to the maximum amount possible with a PLL on this MCU, which is ...

Resolved! STM32G484VE - GPIO status while powering on.

I have designed a target board based on STM32G484VE and I am encountering a problem with GPIO outputs while powering on.The requirement is no output should get high status while powering on or during reset. So I have configured the IOs using CUBEMX ...

Resolved! [B-U585I-IOT02A Discovery kit] What is the maximum voltage to apply to VIN ?

Hello,I'm currently using and working on B-U585I-IOT02A Discovery kit. Today, I supply the board with STLINK source via CN8 connector. But I want to be able to supply it with 12V voltage. So I will now supply the board via VIN pins and connect jumper...

Resolved! Timing to be reflected __disable_irq() and __enable_irq()

​We make below code.The variable a is written from both main function and interrupt function.​When accessing variable a with the main function to realize exclusive control, interrupt disable and enable (__disable_irq(), __enable_irq()) are used.​How ...