STM32 MCUs Products

Iam using STM32L412 nucleo board. To achieve low power consumption Iam using standBy mode and RTC Wakeup. On wakeup I found that the data is not retained .

Iam using STM32CUBEIDE for setting up the project. While refereing I have found some articles stating that standby mode default sram contents are lost and we need to use the backup mechanism also I found a reference like (http://5.9.10.113/62624874/s...

UART with Circular DMA mode polling - NDTR gives wrong (full) value on wrap in circular buffer

Hello,I'm experimenting with DMA, following a lot of examples. I'm reading DMA counter to determine if there are any new bytes received in circular buffer. I use CubeIDE on STM32f779. I have following code :void HAL_UART_RxCpltCallback(UART_HandleTyp...

I am trying to get in touch with Sales Office in Spain but I'm not being able to reach them. Someone can help?

SPI2 not working on NUCLEO-L452RE

HelloI've got an issue to send byte though SPI2 on the STM32L452.SPI1 and SPI3 works without any issue. But nothing on the SPI2.The code was generated from STM32CubeMX.Here is the SPI2 init :static void MX_SPI2_Init(void) {   /* USER CODE BEGIN SP...

spi1 bus with multiple slave is possible?

Mostly our spi will use these 3 signals (SCK, MISO, NSS (CS) ) in master rx only mode. where multiple slave are connected to SPI and each will have a dedicated CS in star topology as shown above. How to select this NSS/CS pin for individual slave, ca...

SPI4 Issue -> clock signal is generated but MOSI doesn't output any data

We are using the STM32H725IGT6 MCU. We are using 4 SPIs -> SPI1, SPI3, SPI4 and SPI6. We are able to communicate with the SPI slave on the SPI1, SPI3 and not able to with SPI4 and SPI6. We are able to see the SPI4 clock on the SCK pin, but there is n...

stm32f303re to write data in the st M95160w EEPROM and reading back the written data. but cannot write accurately. how to do that?

using stm32f303re to write data in the st M95160w EEPROM and reading back the written data. the problem is i am not getting back the accurate output. the output should be like this:status 0x0211 22 33status 0x00but gettingstatus 0x0200 ff ffstatus 0x...

16GB eMMC (8-bit) on STM32F676ZI

Hi, I connected a 16GB Sandisk eMMC in 8-bit mode to an STM32F676ZI SDMMC interface.I use HAL drivers and TrueStudio for development.HAL_MMC_GetCardInfo returns this information:CardType : 0 Class : 2293 RelCardAdd : 0 BlockNbr : 2097152...