• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 98 subscribers
  • Views 551 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

How to disable UART hardware receive in AM335x?

Kun Zhang
Prodigy 165 points


In kernel code, to disable UART receive is just to discard the char received from RHR.

Disable RX interrupt is unavailabe because the data shall be put into FIFO through shift register.

Is there any method to disable UART receive in hardware mode?

Even there is any data on RX line, the UART controller doesn't receive it to shift register or FIFO?

  • 0
    TI__Guru 64510 points

    Kun Zhang said:

    In kernel code, to disable UART receive is just to discard the char received from RHR.

    Disable RX interrupt is unavailabe because the data shall be put into FIFO through shift register.

    Is there any method to disable UART receive in hardware mode?

    Even there is any data on RX line, the UART controller doesn't receive it to shift register or FIFO?

    A quick thought might be to configure the pin of the AM335x to be in GPIO mode, rather than UART RX.

  • 0 in reply to BrandonAzbell
    Prodigy 165 points

    It's pretty cool! I'll try.