STM32 MCUs Embedded software

hello ! i am working with usb host cdc class with my stm32f4 uC i have a problem when i attach my device on the register OTG_HCINTx the 7th bit TXERR is always set to 1 wich means i have a Transaction error so the enumeration state cannot be done,

Hello ! I have to implement an USB CDC Host driver for STM32F4 uC. Has anyone an idea/example wich version of the usb otg library i should use actually i found only an old version wich is v 2.2.0.

Programming multiple STM32 MCUs in Device Using a Single USB Connection

So I'm working on a hardware prototype which utilises two STM32F303s on two separate boards. I need to provide DFU firmware update functionality so that a package can update the firmware of either or both chips. The master board contains the USB conn...

Getting started with STM32f469 ?

I just got the eval board.I am clueless , too much info on the site , can someone point me to a get started pdf or something ? Shouldnt I see the board in the Audiweaver server? Where it now says native?I have Touch FX and the audio weaver ,but neith...

STM32F107 Ethernet DMA TBUS bit always set and not other useful info

Hi,i'me trying to develop a firmware for STM32F107RCT with a 4 port Microchip switch.The switch has 3 port with phy and 1 port in MAC/PHY mode. I've set it in MII PHY mode.It get's the 25MHz clock from MCO1 pin (set HSE that use a 25MHz quartz) and g...

How to know if it is a positive or negative edge using the Window comparator?

I have my window comparator fully working Triggering an interrupt every time it crosses the thresholds .But my problem now is how do i know if it is positive or negative edge..?I am using the HAL for this.Thanks

USB CDC + MSC Composite device

Hello,I use an STM32F4 as a USB CDC device, I would like to add the MSC functionality (SD card). I have read many threads, but have not found a way to implement it.Is it possible? What needs to be adjusted?Does anybody have found an introduction or t...

I am using STM32F3xx_HAL_Driver with my STM32F303VD MCU. When I am erasing 1-3 pages of flash memory with HAL_ERR_TYPE HAL_FLASHEx_Erase (&eInit, &status) subroutine, my USART2 seems to overflow.

I have the USART2 setup for RTS/CTS flow-control and Rx DMA for one byte transfers into a ringbuffer. The problem isn't that the ringbuffer is overflowing, it appears that the DMA process is stalled during the erase flash pages operation and the UART...