LL USART APIs not woriking!

[Mujtaba]

Posted on June 07, 2018 at 08:33

Dear friends,

I am trying to send data over RS485 protocol using a STM32F107RCt6 MCU.

I config the project in CubeMX and when I write the following code, the USART does not send any data while the project compiles successfully and no errors occurs.

    DE_SIGNAL_GPIO_Port->BSRR = DE_SIGNAL_Pin;

    

    LL_mDelay(100);

    

    for(j=0;j<8;j++)

    {

        while(!LL_USART_IsActiveFlag_TXE(USART1)){}

        LL_USART_TransmitData8(USART1,snd_buff[j]);

        

    }

    

    while(!LL_USART_IsActiveFlag_TC(USART1)){}

    

        

    DE_SIGNAL_GPIO_Port->BRR = DE_SIGNAL_Pin;

I've done this project using SPL libraries and HAL libraries but now I want to migrate to LL APIs.

The code I wrote for LL APIs is pretty much the same as SPL APIs but I don't know why it is not working.

I've tested this code on STM32F103RCt6 MCU too but it also didn't work.

I am using the CubeMX version 4.25 and STM32CubeF1  version 1.6.

I'll be thankful if someone code help me using LL USART APIs in my project.

[Tesla DeLorean]

Bumping stale unanswered questions off my feed

@ST Community​