STM32 MCUs products

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Low Power UART

What is the difference between LPUART and UART?. As far as i read there is no difference to use LPUART and normal one(except power consumption ofc). If I change my UART channel to LPUART, will be any difference? Will be the LP ones DMA usage differ ...

EKosa.1 by Associate III
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  • 3 replies
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Interrupt based LPUART with BLE application.

Hi I'm working with STM32WB5MMG-dk. The purpose is to develop BLE Gateway. The module has a custom GATT svc with 4 GATT char svc which sends and receive bytes, this data is been provided by MSP430 to STM32WB5 vice versa. So MSP430 acts as master whe...

SPalr.1 by Associate II
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DMA transmit/receive on lpuart1

I'm using the NUCLEO-H753ZI dev board and have been testing various tx/rx reception modes using HAL routines with RTOS for all the available uarts. I have them all working well except lpuart1. When I try to receive or transmit in DMA mode I get no in...

Why LPTIM CNT cannot be read when MCU is running.

Developing with STM32CubeIDE V1.6.1 for MCU STM32L452VCTX. Set up as STM32 Project in order to use debugger. Using STM32Cube_FW_L4_V1.17.0 for SDK. Compiling using gcc-arm-none-eabi-9-2019-q4-major-x86_64-linux. Using FreeRTOS.Using LPTIM1 to track ...

FPutn.1 by Associate II
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  • 2 replies
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I want my STMF103RE based system to sit in Stop Mode and then wake up when a CAN message arrives, do something about it, and go back to Stop Mode.

 I want my system to sit in Stop Mode and then wake up and receive and process a CAN message when one arrives.     The code I generated for setting up the system includes: RCC->APB1ENR |= ( 1UL << 25);     /* enable clock for CAN -- Note: MCBSTM32 us...

HHeet.1 by Associate II
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  • 6 replies
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Resolved! LPUART error

Has anyone encountered this problem? An ORE error occurs when receiving data with LPUART. After I clear it with software, an ORE error occurs every time I receive data. How can I solve it?

XZou.1 by Associate II
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  • 1 replies
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2 lpuarts can't communicate to each other correctly

A board with STM32L071CBT6 and another with STM32L476RGT6. The former transmit 18 bytes data {02 6E 9B 3B 41 41 00 00 E7 41 96 83 C9 42 00 03 24 97} to the latter. the latter received {02 6E 9B 3B 41 41 00 00 E7 41 96 83 D9 42 00 03 24 97}, that's t...

JZhen.6 by Associate
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  • 3 replies
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STM32 LPUART only works with breakpoint.

Hi, I need your help, please:I'm using a STM32 and the STM32CubeIDE and I want to communicate the MCU and a FPS module R502 through LPUART (Low Power UART). When I send the correct packages, the FPS answers correctly (I check that reading via serie w...

SCabr.1 by Associate II
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  • 11 replies
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Resolved! STM32L0 UART/LPUART wake from STOP MODE

Hi,I am using the MX Cube example in STM32Cube_FW_L0_V1.12.0\Projects\32L0538DISCOVERY\Examples\UART\LPUART_WakeUpFromStop.I have modified it to use the STM32L0538NUCLEO BSP and to use USART2.I had to add a HAL_SuspendTick in order to get into STOP m...

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