STM32 MCUs Embedded software

Hello to all. I just wanted to mention that the calculation of the working frequency of the USB port, in the library module "stm32f3xx_hal_rcc_ex.c", line 1228, in the function "HAL_RCCEx_GetPeriphCLKFreq", in case the USB prescaler is set as PLLfreq / 1.

Azure ThreadX newlib _sbrk

Hey together,I'm switching from freeRTOS to Azure ThreadX at the moment. I know that there are problems when using newlib functions like printf with %f and so on with freeRTOS. As explained in the following link this has to do with the issue that the...

Add PIMA device class to USBX

I am trying to add the PIMA device class to USBX. I have used CubeMX to enable the PIMA device class and am trying to fill in the missing details to make it work.It looks like I need to have something handle the PIMA class in USBD_FrameWork_AddToConf...

How do I get FatFS working on a NucleoH7A3?

I've been struggling to get FatFs working on a NucleoH7A3 board for a while. I built a little board with a uSD card connector that plugs into the Arduino connectors on the Nucleo board. The pins for the uSD card connector are connected to the same GP...

STM32L4 do not detect USB Suspend mode (LPM enabled)

I would like reduce power consumption from USB host when my device do not used by application on USB Host. I would like use STOP1 when device in suspend.As I know USB Host should stop send SOF(when device is no active) and after 3ms device should det...

Problem using µSD card with SDIO and FatFs

 I'm trying to make a program one of the features of which is SD card support. I'm using HAL libraries entirely, it's hard to find an example that combines SD card, SDIO communication and HAL libraries.1. problem is that function f_mkdir, f_open retu...

how to use sleep mode in stm32f401re with freertos enabled.

I am using lower power mode for my application. When I enable sleep mode in the task it is getting waked once it enters the sleep mode. I want to my application to stay in the sleep mode until the external interrupt occurs.