STM32 MCUs Embedded software

SPI Data Register Problem

Hi,​I`m using STM32G431 for practicing SPI protocol knowledge, but face some problem like below.​I use �?HAL_SPI_Transmit_IT】API to send (0x5A,0xA5) data out, but measure with Oscilloscope and figure out the wrong data.In �?SPI_TxISR_8BIT】show how d...

Timing-dependant hard fault error during SPI communication

Hello, I am facing a strange hard fault error during SPI interaction loop with the display that only takes place under certain circumstances, prob. related to changes in timing. Minor changes in code at random places alter WHEN it happens. This is my...

How DMA works for USB HS

I am wondering how DMA works for USB HS. As far as I know it is a "machine" to copy memory to another place. And how is it implemented for USB ? We have there a FIFO queue and from what I observed in the driver, the data from the FIFO are copied by t...

Can someone point me at an example of a non-HAL basedSTM32 peripheral driver?

I'd love to see a well structured, non-HAL based STM32 peripheral driver that is actually working in a real world application. For my purposes, a H7 UART driver that uses DMA would be great. If it implemented idle character detect and/or character ma...

MSC device does not connect to windows.

Hello,​I'm trying MSC with Nucleo, MSC device does not connect to windows.What am I missing? [windows error] -cannot read device descriptor​[environment​] -STM32CubeIDE Version: 1.7.0 -NUCLEO-F411RE -STM32Cube FW_F4 V1.26.2 -​usb : Device_Only, Mass ...

Hi everyone. When I use additional libraries like FreeRTOS or USB_FS+VCP CudeIDE don't adds include paths automatically. To build project i must add all include paths manually and move all *.c files to /Core/Src/.. folder...

stm32h745i disco board USB with M4 core hard fault

Hello All,I have stm32h745I-disco board.I want USB device as virtual comport.I use cubeIDE and create project with it.I am new on this dual core processors.Thanks to the cubemx it is easy to create a basıc usb code.When I create a usb_fs code with M7...

How can I use sockets with LWIP and FreeRTOS?

I am trying to use Sockets under FreeRTOS. Currently can send data over UDP using netconn, but sockets only send information when two netconn messages are sent previous to the socket one. If some of the netconn_sendto(...) functions is commented, sen...