STM32 MCUs Embedded software

How to fix the problem about USB HID "Unknown Device(error code 43)"

Hello,I'm trying a USB HID on the STM32F103C8 Evb board which circuit's attached.The steps for a USB HID programming are (1) Generating HAL codes using STM32CubeMX.(2) Compiling the source codes using turestduio. (3) downloading the .hex on the ev...

STM32F7 USB Host CDC data transmits result in NAK interrupt flood

I am trying to implement some very basic USB communication functionalities between my STM32F7 and another device. The device can usually be configured by ASCII messages through serial, and so I am trying to achieve that same functionality but through...

USB not working on STM32F302C8 board

We are developing a USB prototype based around STM32F302C8. I cannot get this device to enumerate on USB, using either my own firmware, or the ST examples in STM32Cube_FW_F3_V1.11.0\Projects\STM32F302R8-Nucleo\Applications\USB_DeviceThere is some act...

Need help getting SD+FATFS working with an STM32H747I-Disco

I'm trying to use the SD card reader on the STM32H747I-Disco with FatFs. It's working as expected with the M7 core -- I'm able to initialize the SD interface and the filesystem, and access files on the SD card.However, when I perform the same initial...

USB Audio - Error code 43

Hi,I have implemented USB audio (on my project) which is based on the memsmic1 example project.The MCU i am using is STM32L496x, under keil IDE.the device is recogined by window as audio device but, when i disconnect and reconnect again, I am having ...

STM32F730 USB High Speed Device fail to be recognized after jumping from application to bootloader

Hi,I am now using STM32F730 and its embedded High Speed USB to do my project.The following sequences are made:In the bootloader, a USB HID device is created and connected to PC. I use this bootloader to download the application code into flash.After ...

Bootloader STM32F103 read memory flash.

I2C Low level.

I want to implement a I2C low level driver on STM32L475 as I work with others chips.int I2C_Wait(I2C_TypeDef * I2Cx) { unsigned int timeout = 0; while(LL_I2C_IsActiveFlag_NACK(I2Cx) == 0) { if(++timeout > I2C_TIMEOU...