STM32 MCUs Embedded software

what is the difference between socket API and netconn api and what is thier function thanks

Is there a way to connect two STM32 through Ethernet (using a hub or multiplexer?)

Hello, I'm doing a project where two microcontrollers (maybe one STM32H7 and STM32F7) must be connected between them. These two microcontrollers should be connected to an external Ethernet port. Is there some type of hub or multiplexer that allows t...

Wouldn't it be much safer to initialize FreeRTOS before enabling interrupts?

Using FreeRTOS on a STM32L476RG we get unreliable boot behaviour because CubeMX generates:... /* Initialize interrupts */ MX_NVIC_Init(); /* USER CODE BEGIN 2 */ /* USER CODE END 2 */ /* Call init function for freertos objects (in freertos.c) */ MX_F...

Details of using USB without VBUS sensing

I'm wondering how things work *without* VBUS sensing on, in particular, the STM32F401. From the documentation, I understand that:VBUS sensing can be disabled for bus-powered devices, since these are only powered up when VBUS is present, so VBUS can b...

continuous timer and Alarm in microseconds

Hi, I have an application; where I need to keep on running a hardware timer with microseconds resolution. I will note the time when some external interrupt is triggered. Basically purpose is to note the time difference between external inputs/trigger...

How to program option bytes from STM32H7xx of STM32F7xx bootloader

I am developing code on my PC that uses Serial Comms to interface to my STM32H7xx and STM32F7xx processors using the system bootloader on USART1.I have successfully loaded code on both processors into both bank 1 and bank 2 and can jump to and run th...

How to make several I2C (slave) addresses in STM32.

Hello,I am trying to connect RaspberryPi (master) with STM32 (slave) via I2C. STM has to "simulate" several devices (exactly 10) on the I2C bus. The problem is that I can set max 2 addresses (at least in Cube - HAL libraries). Ideally it would be lik...

USB CDC receive: How do I send a NACK in order to implement flow control?

I'm using a STM32F070RB nucleo board with STM32CubeMX to implement a USB CDC device. After generating my project (and increasing the stack size minimum), I'm able to transmit data from the Windows 10 host to the CDC device by editing the CDC_Recive_F...

board restarts after one hour using FreeRtos and LWIP

I'm testing an UDP client/server using a NUCLEO-F429ZI (Ethernet).Code is generated thanks to STM32CubeMx.I'm using FreeRTOS and LWIP.DHCP, ICMP and UDP are enabled. TCP is disabled.IP stuff is done using socket API, one thread for receiving, one thr...