STM32 MCUs Products

sir my question about the RTC when i wakeup in that standbymode mode my rtc value is the reset and take somting garbage why ?

how do I get the samples of the IC STM32H757AII6?

The product is not in stock on mouser and arrow. Also, I couldn't find it on ST store. Can any one please help me?

Variables in domain D2 are not initialized ... here's why

By default, the variables in the D2 domain (SRAM1, SRAM2 and SRAM3) are not initialized by the linker because DATA_IN_D2_SRAM is not defined in the file system_stm32h7xx.c.DATA_IN_D2_SRAM is used by SystemInit () which is called by the STM32H7xx_Star...

STM32F103RCT Two rotary encoders on timers 2 and 3 Nothing works!

Hi! I am trying to get two encoders running on my STM32F103RCT6, I had it previously accomplished on STM32L152RCT6 and everything worked, but I needed to change the MCU, to something with a DMA to Peripheral mapping. I am using exact same board layou...

Weird problem with UART

I work with STM32L475.First I configure UARTint main(void) { /* Configure the system clock to 80 MHz */ SystemClock_Config(); GPIO_Setup();   USART_Setup(UART4, 115200);   USART_SendInt(UART4, 1234, 1); USART_SendInt(UART4, 0,...

STM32H743: what is the source of adc_hclk?

The reference manual explains how I can select between adc_hclk and adc_ker_ck_input as the clock for the ADC but I can't find what the source is for adc_hclk. It is one of the AHB or APB peripheral clocks but which one? Nowhere in the manual can I f...

Configure SRAM as non-cacheable in MPU

Hello,In stm32h7 I see in the "System architecture" diagram that SRAM3,SRAM2,SRAM1 are not passing through the cache.Yet, it seems that when using SRAM3 with DMA I must configure it as non-cacheable, otherwise I get junk in data.Can anyone please exp...

getting internal RTC time always 00:00:00 (I am using STM32F446RE nucleo board )

I am using STM32F446RE Nucleo Board and want to read internal RTC timing. But I am unable to get the time getting 00:00:00Here I shared my coreClock Setting: LSE : 32768HzSystem Clock: HSI : 84MHzint main(void) { /* USER CODE BEGIN 1 */   /* USER...

I am trying to adapt the "USART_Communication_TxRx_DMA USART Transmitter/Receiver example" to my custom hardware using a STM32F439ZIT6 processor.

I'm trying to get this example to work with my custom hardware. The TX works fine. I can't get the RX to work.* This example was developed for the NUCLEO-F411RE board and my processor is an STM32F439ZIT6, not F411. Could this be the problem?* I ha...