Hello, I have an issue with LPUART communication on my custom board housing STM32L4 MCU. I have a peripheral connected to the LPUART1 lines. This peripheral is quectel MC60 GSM module. I am turning the module on from STM32L4 (by toggling a GPIO). Af...
I have configured LPUART with 9600 baud rate and enable receiver interrupt with MCU 65Khz low power mode and my uart handler likevoid LPUART1_IRQHandler(void){ uint32_t isrflags = READ_REG(hlpuart1.Instance->ISR); uint32_t cr1its = READ_REG(hlpuar...
Hi,I am using LPUART for sending data to the GSM. I wrote own uart transmit driver without timeout, like void LPUART1_Send_Data(uint8_t *string){ while(*string) { if((LPUART1->ISR & USART_ISR_TC)==USART_ISR_TC) { LPUART1->TDR=*string; ...
Hello:I seemingly have the LPUART now configured correctly. For sure the transmit (without DMA) functions OK. I only have receive DMA configured. As usual, it was done in Cube.uint8_t rxBuff[40];#define RX_DMA_SZ 10The start is the same as I am using...
Hi,We are using LPUART port of the STM32L4R5 controller for communication with BLE for that we would like to use RTS/CTS signal.How can i control/check the RTS/CTS signal?Is it possible to control/check the RTS/CTS signal through the software?Please ...
Hello:I am trying to determine why the LPUART is transmitting out the values I am seeing. They make little sense. Here is the UART setup:void MX_LPUART1_UART_Init(void){ hlpuart1.Instance = LPUART1; hlpuart1.Init.BaudRate = 9600; hlpuart1.Init.WordLe...
Hi, I am using Stm32l4r5 controller for my project.I would like to configure lpuart in DMA + interrupt mode and want to read **** of any length.But code generated through Stm32cubeMX not allowing me to read variable length data through lpuart.Receiv...
Hello,How can I set the STM32L476 LPUART TX to level 1 while the device is in StopMode2?The LPUART clock is the LSE clock.Best regardsMich.
Hi,We using stdio for debug output in an Mbed OS app. I don't think Mbed OS is particularly relevant to my question. It's just some simple output without flow control or anything fancy.Currently we're using USART2 for our debug output. USART2 wasn't ...
Posted on February 11, 2018 at 13:59I found this by mistake.I posted a problem waking up from Stop Mode 2 via LPUART https://community.st.com/0D50X00009XkfHjSAJ.The problem started when I used CubeMX generated code to use 80Mhz system clock instead ...