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Linux/AM5728: PRU UART port

Karthikeyan R
Expert 1410 points
Part Number: AM5728

Tool/software: Linux

Hi,

Is it possible to create SUART for am5728 processor as mentioned in below link

I want to create uart device using PRU core. Please provide the guidance.

  • 0
    TI__Guru** 101630 points

    Hello Karthikeyan,

    TI no longer supports that Soft-UART code from Linux 3.2. See the post Soft UART on PRU for more details.

    Keep in mind that Soft-PRU project used code running on the PRU to make the PRU itself act like it was a UART. It did NOT use the PRU to control a hardware UART, which is what it sounds like you are trying to do in your other post.

    Technically you could take that old Soft-UART code (if it is still available to be downloaded), forward port it to Linux 4.9, and make all the PRU modifications needed so that the PRU interfaces properly with the updated version of Linux. But it is going to be a lot easier for you to simply use the PRU to control a UART that already exists in hardware.

    Regards,
    Nick