STM32 MCUs products

Nucleo-L4P5ZG LPUART not receiving nor transmitting

Hi all! I am trying to communicate with the Nucleo-L4P5ZG via the LPUART1 peripheral over ST-LINK, however it doesn't seem to be transmitting or receiving anything. Following is my system clock initialization code (non-relevant parts cut out): #pragm...

Resolved! UART Rx Pin Input Impedance for RC Low Pass Filter Design [STM32 MCUs]

Hello Community, I am trying to confirm with you all a design decision for RC based Low Pass Filter that I plan to install on my the UART Rx pin as the STM32G0 Errata mentions this pin has to have a filtered/noise free input to avoid glitches. I am t...

Stm32l072KZ Firmware Update

Hello everyone, I have a stm32l072 microcontroller and an NB exs82 module connected via LPUART. And I'm trying to read a new .HEX firmware that is stored in the NB module's FFS and then make the microcontroller receive the packages that contain the r...

USART2_LPUART2_IRQHandler fired when no interrupts are enabled in control register

Hello, The cpu is STM32G0B1. I am developing the interrupt-based UART driver using FIFO and software circular buffers. The main point is, that I don't fully understand the mechanism of interrupts. I enabled two interrupts in CR3 register using RXFTIE...

Resolved! UART fired only once - STM32U5 Custom Board

Hello,I'm working with an STM32U5 custom board.I use the LPUART1 to read input with an interrupt as shown below and to write it back on the same LPUART1 : void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) { HAL_GPIO_TogglePin (GPIOA, GPIO_...

UART not working while debugging - Custom STM32U5 LPUART1 Interrupt

Hello,I'm working with an STM32U5 custom board.I use the LPUART1 to read input with an interrupt as shown below and to write it back on the same LPUART1 :In the while loop of the main function I have : while (1) { /* USER CODE END WHILE */ /*...

Resolved! UART receive buffers data instead of sending it to the code

Hi all, I'm trying to receive UART data from an xbee module, I've noticed the xbee is sending out the data correctly (using a logic analyzer) however the STM32L431KCU6 is not receiving this data properly and instead seems like the data is being buffe...

Resolved! for the h753 custom board- how to have additional gpios for extra sensors

Since we have decided to create the prototype, the first requirement is ensuring that the chosen H753-EVL board is functioning properly. However, its GPIOs are already occupied with essential peripherals such as LTDC, FMC-SDRAM, SRAM, NOR flash, USB_...

Resolved! LPUART no output

Hello,I am programming an STM32WB55CGU6 on custom PCB. I'm using the LPUART1 peripheral according to the datasheet and reference manual, but at the transmitter pin (PA2) I'm not seeing any traffic. It's just stable at about 3.3V. There is a led at PC...

Resolved! STM32G0C1RET6(ARM® Cortex®-M0+ STM32G0 Microcontroller IC 32-Bit Single-Core 64MHz 512KB (512K x 8))

Hi, (STM32G0C1RET6 for this part number ARM® Cortex®-M0+ STM32G0 Microcontroller IC 32-Bit Single-Core 64MHz 512KB (512K x FLASH 64-LQFP (10x10))two type of pin descriptions have mentioned in the datasheet, I confused which one I have to t...