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Resolved! I have an product using a STM32l486. It uses USART1 with transmit and receive DMA to communicate over a serial port. Serial port packets are all the same length. My application works in run mode, but not in sleep mode.

I can send and receive packets in run mode, but I never get a RX DMA interrupt when in sleep mode. I do not have any interrupts enabled in the USART hardware, and do have DMAR and DMAT enabled. Any ideas on what might be missing?Thank you.

Write time-out on STLink UART

Hello,I am using an STM32F072 Nucleo board. I use the STLink USB-to-UART bridge to communicate with the MCU.From time to time, the STLink UART on the PC gives a write timeout. I cannot reproduce this readily, it does not happen often.The COM-port sti...

pietrow by • Associate
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  • 3 replies
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How to configure two DMA channels (ADC and UART)

Hi I'm using STM32cubeIDE and I use two DMA channels,DMA1_Channel1 is for ADC1 and DAM1_Channel5 is for USART1_rx.USART1 is using for RS485 communication. HAL_ADC_Start_DMA(&hadc1, &adcVal[0], 8); HAL_UART_Receive_DMA(&huart1, &rxBuffer[0], DMA_RX_BU...

HLEE.5 by • Associate
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  • 1 replies
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Setting the Clocks on the STM32F105 for I2C

Hi allI am struggling to get the I2C up and running. I set the clocks and initialisation up in CubeMX (latest version) and when debugging the code I keep getting the pclk1 variable coming back with 1000000 which is below the limit so I get a HAL_ERR...

NCook.9 by • Associate
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STM32 USB memory

Dear community,I use a NUCLEO-H743ZI with the STM32CubeIDE 1.4.2. Here ist my question:When the NUCLEO is connected to the PC a pop-up window opens. ​I think that this memory can bei used to store data by the NUCLEO. Therefore e.g. a .txt file could ...

CKolh.1 by • Associate
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  • 1 replies
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Hello , i want to use QSPI MEMORY(MT25Q128) with STM32L476RE MCU Later, I tried to storage data to above FLASH in Single-SPI MODE(EXTENDED SPI) and That's work is good BUT I hope to storage data USING QUAD-SPI MODE so, tried to below steps

I don't use Interrupt and STM32CUBEIDE HAL LIBRARY 1. SEND ENTER QUAD IO MODE COMMAND(0x35) -> 2. SEND WRITE ENHANCED VOLATILE RESISTER COMMAND(0x65)-> 3. Transmit data 0x7f (This register MSB bit set LOW) because ENABLE QUAD MODE-> 4. SEND WIRTE ENA...

WJung.1 by • Associate
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  • 1 replies
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Which is reliable CAN transceiver for STM32F072RBT6.?

I am new in CAN implementation...I want to design a CAN node using STM32F072RBT6...And am planning to use MCP2551 CAN transceiver interface with STM32F072RB with CAN Rx/Tx line...Will it work proper???STM32F072RB - works on 3.3VdcMCP2551 - works on 5...

Bs.1 by • Associate II
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