STM32 MCUs Products

Problems on RX data on stm32f091 using uart and dma

Hi. After many hours my stm32f091 board does not receive what I send to it using uart.Please could someone confirm that I'm using uart, rx and dma correctly?So this is my sequence:CubeMX -> usart1 -> DMA Settings -> add(on RX, circular, memory)Usart1...

Is there a good video tutorial for stm32 programming?

STM32F3Discovery USB-CDC working on rev.B but NOT rev.D board.

Hello,I have used USB-CDC for some time. All STM32F3 discovery boards are rev.B (MB1035B). Recently I purchased a new one, which turned out to be a revision D  (MB1035D) .Running the same code on the new board gives the famous 'USB device not recogni...

Stm32 input capture timer

Hi guys, Does anyone know if there is any existing example to configure low lever(without using the abstraction layer) an input capture with a timer using a STM32F3 board? If so where could I find it?Thank you very much !!

SD card Lock/Unlock example

Posted on November 22, 2013 at 14:27Hi All, Does anybody have an example how to lock/unlock SD card using SDIO and CMD42?

Can I have two different callbacks? (to use two buffers)

I want use two or more buffers with IO functions. One way I could imagine was if I use two different callbacks. I would call HAL_UART_Receive_IT using buffer A which calls HAL_UART_RxCpltCallback A which calls HAL_UART_Receive_IT using buffer B which...

Is there any fundamental difference between RNG and TRNG?

Hello,while many STM32 have a RNG unit, only few parts, like the STM32L053, have a TRNG unit. Looking at the reference manual, I see no real difference.Is there any fundamental difference in TRNG versus RNG unit?

System clock speed and its effect on floating point (soft) calculations performance

Greetings.I'm using STM32L051 for a project, and there are some maths calculations where I'm using single-precision floating point calculations (additions, multiplications, sinf(), cosf(), etc.).My calculation routine is taking about 7ms when using 1...

How to continuously store data into SD card?

I have SD card interfaced with stm32f407 through 4bit SDIO. I am writing data from I2S _DMA_receive buffer into the sd card. This write should happen continuously,but it happens only once.Here is the piece of the code:FATFS myFATAFS;FATFS *myFATAFS1;...

UART DMA TX complete callback issue

Hello, In the uart driver code of STM32 CUBE layer i found this, static void UART_DMATransmitCplt(DMA_HandleTypeDef *hdma){ UART_HandleTypeDef* huart = ( UART_HandleTypeDef* )((DMA_HandleTypeDef* )hdma)->Parent; /* DMA Normal mode*/ if((hdma->Instanc...