About HRaup.1

HRaup.1 · 2022-05-24

I have a STM32L081KZT and I am using the LPUART.I want to create my own Interrupt (handler) based on UART_FLAG_TXE. So basically a function that gets called whenever the UART_FLAG_TXE bit is set.In the GCC compiler manual I have found this:void f () ...

HRaup.1 · 2022-05-20

Hello,I have a STM32 L081KZT and want to use the LPUART to send an Array of bytes, byte wise. For that, I use HAL_UART_Transmit_IT to send the first Byte of the Array and HAL_UART_TxCpltCallback to recursively write the rest of the Array with HAL_UAR...

HRaup.1 · 2022-03-14

Hello,I am using a STM32L081KZT6. My code sends a Message via LPUART every second and receives an input over the same LPUART from the user. The RTC is used for the timing with LSE. To save power, I go into sleep mode between sending and receiving. Th...

HRaup.1 · 2022-03-10

Hello,I have some Issues with LPUART1 on a STM32L081KZT. What I want to do is:- Receive Data of variable length via LPUART1 using the HAL_UART_Receive function.- Reading bytewise in a loop- Using an External Interrupt to start the receive.My Code loo...

HRaup.1 · 2021-12-16

Hello STM Community! This is my first Question in this Forum.I am using a STM32L081KZT and I need to save data, when the Power is unplugged. My setup is powered by USART and can only be turned off by unplugging the UART cable. In that case I need to ...

HRaup.1 · 2022-05-24

Thanks for your answer. Basically I want a function that is automatically called, when the UART_FLAG_TXE Bit is set in the LPUART_CR1 Register. My first approach was to create an IRQ Handler just for this, but I dont know how to do it. Is there any w...

HRaup.1 · 2022-05-23

@Community member Thanks for your answer I tried using DMA, but I have the same problem with the regular transmit. When I send the all Bytes at once, I am unable to send a Byte during transmission. When I send it byte by byte, I have gaps. After re...

HRaup.1 · 2022-05-23

@Bob S As I mentioned before, I need to be able to send a single byte during the Transmission of data. When an Interrupt occures, I have to send this byte, even if Im transmitting data. So, when I get this Interrupt during transmission, I can set th...

HRaup.1 · 2022-03-18

I just found the solution to my problem:According to RM0367 Reference manual and Application Note 4991 (https://www.st.com/resource/en/application_note/an4991-how-to-wake-up-an-stm32xx-series-microcontroller-from-lowpower-mode-with-the-usart-or-the-l...

HRaup.1 · 2022-03-15

Hello and thanks again for your help.Yes, it looks like the reception starts too late and it is because of the STOPMode. The same code works fine with SLEEPMode.LPUART does not seem to be ready to receive. When I wait for the LPUART to be ready withw...

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How do I create an Interrupt for UART_FLAG_TXE?

Using LPUART to transmit byte wise: Space between Bytes

LPUART acts strange with StopMode - STM32L081KZT6

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Re: How do I create an Interrupt for UART_FLAG_TXE?

Re: Using LPUART to transmit byte wise: Space between Bytes

Re: Using LPUART to transmit byte wise: Space between Bytes

Re: LPUART acts strange with StopMode - STM32L081KZT6

Re: LPUART acts strange with StopMode - STM32L081KZT6