STM32 MCUs Products

DMA Performance

Do some homework assigned by the lecture but have no direction so ask for some help.I need to write a function DMASpeed() to demosntrate the speed improvement of DMA over a software loop for memory to memory transfers. I include polling DMA for my ho...

STM32L073 - Init RTC via external clock (PC)

Hi, ​My client has an existing circuit which is logging some data (no information given)Until the logging just has a counter which starts, when a power source is connected.Now they want to add a real clock to the logging entry, and I saw that the STM...

I'm trying to use the MultibufferDMA mode of HAL driver for STM32F769 device. There's not a single example I could find which uses this mode in the list all the applications/demos/examples for STM32 devices. Here's an example call I use :

 // using Double-Buffer DMADMA_HandleTypeDef hdma ;StreamBaseAddr = DMA_CalcBaseAndBitshift(&hdma) ; // get the stream base addr if (HAL_DMAEx_MultiBufferStart_IT(&hdma, StreamBaseAddr, Buffer[0], Buffer[1], BUF_SIZE))     {       Error_Handler();   ...

Hi, I would like to write a utility code for stm32 flashloader application in linux, so that firmware can be downloaded to stm32 thorugh UART using commands. For linux, i need .so of flashloader application. where can i get it?

Linker Time Optimization introduces glitch/noise into Timer DMA controlled PWM

Hello,I have an application on an STM32F042 microcontroller, and it uses Timer 2 configured as PWM output and is transferred over DMA.To fit the whole code into the small 32 KB flash memory, I am forced to use -flto (Linker time optimization). Howeve...

DMA to receive unknown length frames with UART

HiI need to listen to Rx UART to receive unknown length frames (I will search for a frame start byte, then read the frame size and then test a CRC for frame validating)I would like to use DMA for performance but I only see half or full reception int...

SPI Transmit only last word of byffer

HiI'm trying to transmit 4 16-bit words via SPI as slave using interrupts and HAL.I'm using STM32F107VCT6So I specified a buffer:uint16_t buf[] = {0x000F, 0x00F0, 0x0F00, 0x0004};And started to transmit in main:MX_SPI2_Init(); HAL_SPI_Transmit_IT(&hs...

is it possible to set different channels of timerX for different mode at same time?

suppose timer2 has 4 channels , i want to use channel1 as input capture mode and channel2 as output compare mode. is it possible?? please help me!!!!