STM32 MCUs Products

HAL_UART_Receive_IT not resetting after HAL_UART_Transmit

I am trying to implement MODBUS protocol. STM32 receives an initial message of 8 bytes and then send a response of 8 bytes. However, the next message received by the STM32 doesn't trigger the HAL_UART_Receive_IT callback. uint8_t reception_complete =...

STM32U5A5 USB device vendor specific class implementation

Hi,I need to create a USB composite device class interface with STM32U5A5 controller. I have been using the USB_CDC_ACM example project so far for my development. In this example the USB CDC ACM class is configured and I need to change/add this to a ...

Resolved! STM32H755ZIT

Hello, Does the STM32H755ZIT support flashing over CAN? The application note AN2606 suggests that the H75x series does support bootloader access on the FDCAN1 interface, but specifies pins PH13 and PH14, which are not available on the LQFP144 package...

Resolved! FLASH_VOLTAGE_RANGE_1

Hi,What is the effect of "VoltageRange " while erasing a sector ? Er.VoltageRange = FLASH_VOLTAGE_RANGE_1; Ret = HAL_FLASHEx_Erase(&Er, &SectorError); #define FLASH_VOLTAGE_RANGE_1 0x00000000U /*!< Flash program/erase by 8 bits */ #define FLASH_VO...

Strange Behaviors on PA0 Encoder Timer Input on NUCLEO H743ZI2

Hello everyone,I work on a demonstration product using a NUCLEO H743ZI2 board has a main board. I use two timer (TIM3 and TIM2) in encoder mode to measure the speed of two motors with precision.But I didn't manage to get the theoretical results on 1 ...

STM32G4 SPI Transmitted Data is also Transmitted while receiving during next cycle

Hello,I'm currently working on a project where my STM32G747RE is acting as an SPI Slave.The SPI transmission is as follow:Master sends 8 bits "command"Slave send back 16 bits "data"My issue is the following; On the MISO line, the STM32 always send ba...

Multiplexing I2C on STM32f4 Board

Hi allI am using 4 sensors on my project. These are comminicated with stm32f4 board via I2C. However there ara 3 I2C channel on stm32f4 board. Is it possible to connect them to same channel via ı2c multiplexer ? As ı researched, the multiplexer is u...

Resolved! Can't find LL function to clear USART_ISR_RXNE_RXFNE

Dear Mr. or Ms.When I tried to clear IT flag of USART_ISR_RXNE_RXFNE, I can't find any fuction to do it.In stm32g4xxx_ll_usart.h, I can find fuction named LL_USART_IsActiveFlag_RXNE_RXFNE() but there's no function like LL_USART_ClearFlag_RXNE_RXFNE()...

Electronic design for JTAG/SWD

Hello everyone,I've been looking for some time for an example of an electronic design that would allow me to use the STLINK-V3MINIE in JTAG mode.With my electronic schematic I can use it in SWD mode, which works very well.However, it's impossible to ...