STM32 MCUs Products

STM32F769NI: UARTs do not connect in bootloader mode

Hi,I am asking for some sound technical help on the STM32F769NI BootloaderI am using an STM32F769NI MCU and wish to update the firmware using STs' Bootloader mode via the UART.I am running into problems that none of the UARTs on Pins PA9/PA10, PB10/P...

ADC digital reading

Hello,I'm using the NUCLEO-F722ZE EVB.Page 155 of the datasheet describes the ADCs characteristics: https://www.st.com/resource/en/datasheet/stm32f722ze.pdfFrom the NUCLEO-F722ZE schematics I see that VDDA as well as VREF+ are 3.3V. VREF- is zero vol...

While initializing window watchdog it redirects to reset handler

I'm trying to test the window watchdog timer but when I'm calling HAL_WWDG_Init(), it redirects to reset handler and whole system restarts. Below is my code, I'm showing here only important lines./******************************************/WWDG_Ha...

Is it a problem if the NJTRST pin is toggled before it is disabled and configured as GPIO (JTAG is not needed)?

Hi,I have a design with a STM32F301 controller. I don't need JTAG, therefore I want to reuse the JTAG pins for other purposes.Is it a problem if the NJTRST signal is toggled when the uC is starting up? Could this affect the uC operation, or does this...

Are the USART*_TX pins configured as push-pull outputs when in system memory mode from the beginning or only after selection of the USART interface (0x7F received)?

Hi,AN2606 (STM32 microcontroller system memory boot mode) states e.g. for the STM32F301, that in system memory boot mode both USART_TX pins (USART1_TX & USART2_TX) are used as outputs. Is the TX pins really configured as outputs as soon as the system...

i need a USART 10 Bit Word length, how to implement Driver for STM32L4xx series any suggestion.

Interrupts Management

I am trying to understand the priorities, subpriorities and priority grouping in my stm32f407-Discovery.I would like to have 3 external LEDS (LD_A, LD_B, LD_C) and 3 interrupts (IT_A, IT_B, IT_C) with. IT_A has a highest priority, IT_C has the lowest...