I use Modbus RTU 8N1 with 9600 bd. I always have sent the same 8 byte request. The first byte of the message is 0x01.In about 85% of all tests the STM32 evaluates the request correctly. In a 15% of all tests the first byte is evaluated as 0x80 or 0x...
Hi i'm trying to get the LPUART (PA3, PA2) pins to communicate with my computer via the serial port, but i can't get anything to work. Here is what i'm trying to use at the moment...Sysclock Config:#pragma once extern "C" void SystemClock_Config(vo...
On the L4R5 and on the U575 when the LPUART uses the LSE clock source (32768Hz) and is configured for 9600 baud the byte timing is very precise, exactly as predicted by the reference manual as (RM0432, 51.4.7). However the timing of individual bits w...
Hello everyone,I work on a project with STM32L072CBT6.I want to use a DMA RX on LPUART1, after reading differents ressources i have setup my LPUART and my DMA.I want to receive an interrupt from my DMA when transmit IDLE (end of transmit).My problem ...
Hello,STM32L412 will be in stop mode 2 with LPUART. This device is a slave device, master device wakeup on time schedule and gather data from it by RS232.ST232 is powered by master device. But issue is that when ST232 power is off by master, then it ...
I have an application using STM32H743 we wish to use the LPUART using the interrupt. We have a bootloader that is located 0x08000000 until 0x08020200. According to system_stm32h7xx.c we should move the vector table in steps of 0x200 this works for al...
Hello community, I'm new to ST-MCUs, so maybe this question is very basic. I'm developing an application for a customer board with a STM32L051R6TX.For Communication we use USART1 und USART2, for logging I activated LPUART1.On USART1 und USART2 I get ...
As per application note, it says X-CUBE-LPUART supports STM32U5. I am trying to find example for LPUART Reception in LPBAM but I am not able to find any example. Cube IDE has one example but LPBAM mode configured only for transmission. For the recept...
UART_HandleTypeDef hlpuart1;///init///hlpuart1.Instance = LPUART1; hlpuart1.Init.BaudRate = 256000; hlpuart1.Init.WordLength = UART_WORDLENGTH_8B; hlpuart1.Init.StopBits = UART_STOPBITS_1; hlpuart1.Init.Parity = UART_PARITY_NONE; hlpuart1.Init.M...
When I configured the USART3 and LPUART1 it was going to the error handler function.can anyone tell why that's happening.