STM32 MCUs Products

Getting Error "undefined debug reason 8 - target needs reset", BluePill, ST-Link V2, & STM32CubeIDE, STM32CubeProgrammer is able to download the code to the BluePill & run,while I have no debugging problem at all when replacing BluePill with H743 board.

Use HAL_I2C_Master_Receive_DMA when the receive size is contained in the first received byte?

I'm working with the Nucleo-64 development board with an STM32L476 microcontroller. I wish to receive data over I2C using DMA with the function HAL_I2C_Master_Receive_DMA. However, to use that function I need to specify the parameter Size, and I don'...

Why does the STM32 not start as stand alone, but it starts connected with STM32CubeIDE?

Hi,we work with Nucleo STM32G031K8 board and STM32CubeIDE. The example program Blinky (its full name is GPIO_InfiniteLedToggling_Init) is working as expected. The LED is toggling also with extern power supply instaed of USB power.Now we have programm...

HAL_UART_Transmit sends extra '00' between each byte

This is probably a simple question but I can't find a reason for it - Im using the USART on a stm32L412 and I am sending 3 bytesuint16_t SendDataOn[3]={0x90,0x3C,0x3E}; HAL_UART_Transmit(&huart1,(uint8_t*)SendDataOn,3, 100)Except when I send this, I ...

Hello, I am working with STM32 Nucleo board (NUCLOE-H743ZI2),I have an issue while writing with external debugger stlinkV2. I have connected to microcontroller and able to read the flash memory but I was unable or erase or write into the memory.

I am also attaching the error file from STLINK utility. Can anyone help to sort this thing out.

Don't debug. [ .elf file not found ]

hello everyone,I have the Nucleo F410RB board and I can't debug it. It gives me an error "Error message form debugger back end" and tells me that my .elf file is not found or the directory."F410RB_TEST.elf No such file or directory" The file does exi...

While working on I2C firmware for STM32F0 device, possible typo/errata in RM0091 - where could I submit this to ST?

RM0091 page 628/1004document DocID018940 Rev 9.Existing text: "The byte counter is always used in master mode. By default it is disabled in slave mode, but it can be enabled by software by setting the SBC (Slave Byte Control) bit in the I2C_CR2 regis...