STM32 MCUs Embedded software

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CDC_DATA_FS_MAX_PACKET_SIZE

Posted on July 02, 2018 at 15:32Hi,please help me to understand why when I increase the value of CDC_DATA_FS_MAX_PACKET_SIZE in usbd_cdc.h more than 128 usb communication and the PC both hang??please instruct me what to do to increase the usb receiv...

Problems writing bootloader on STM32107VC

Posted on July 01, 2018 at 11:11I'm working on STM32F107VC and I'm trying to create a simple bootloader.All the boot-loader have to do is check two places in the flash where the application can be and jump to one of the applications.(currently I man...

USB HS Data Out transfer with DMA

Posted on July 02, 2018 at 09:50Hi everyone ! I am currently trying to write a custom usb class driver to support a webcam. I am using the STM32F769 Discovery boark and the STM32CubeF7 firmware. After the first steps of enumeration and initialisatio...

Resolved! USB VCP - How to know if host COM port is open?

Posted on June 25, 2018 at 13:44Hi all,Is there a way to know if the host PC's COM port is open?My application looks if the USB state is USBD_STATE_CONFIGURED and then starts sending data. In this case my PC application (CVI) cannot open the COM por...

STM32F746 Ethernet DMA Transmit problem

Posted on August 11, 2016 at 11:57Hi, I am developing Ethernet driver on STM32F7-DISCO board. I set buffer address, buffer size in Tx descriptor. Then I set control bits in TDES0 of Tx descriptor and write DMATPDR register to send the frame. However...

zoltan2 by Associate II
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STM32F072 USB device spews bogus data

Posted on June 16, 2018 at 00:50Has anyone seen a similar issue?STM32F072CBT with USB 'Custom HID' based application (mix of 'HID' and 'Custom HID'), on a 100% custom board.With many hosts (desktop PCs and laptops) it works as intended.But with cert...

Pavel A. by Super User
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