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How will the PRUSS be exposed to the Linux SDK?

Alistair Lowe
Prodigy 150 points

Hi guys,

I was very excited to hear about the Programmable Real-Time Unit Subsystem. How will this be exposed to the Linux SDK?

For example:

  • How can I program for this and load the program onto a PRU?
  • How can I communicate, from Linux running on the ARM core to the PRU system?

Many thanks

  • 0
    Intellectual 570 points

    I want to understand this, as well.  I need a specialized UART.  It's basically a fixed-configuration 9600bps UART with special timers in it to detect frames.  I think building the receiver in the PRU as a simple state machine will be easy.  I'm concerned about how hairy it is going to be to get it to communicate nicely with a linux driver.

     

     

  • 0 in reply to Christopher Piggott
    TI__Mastermind 30190 points

    I am not a PRU specialist but I have seen that the AM335x Linux SDK for the EVM and beaglbone board do include a PRU Linux driver to use the PRUs from the user's space. This driver is called uio_pruss driver.

    For AM18xx/OMAP-L13x we did provide the tools on the twiki. For AM335x I am not sure if the same can be used:
    http://processors.wiki.ti.com/index.php/Programmable_Realtime_Unit_Subsystem
    http://processors.wiki.ti.com/index.php/Programmable_Realtime_Unit_Software_Development

    Hop it helps.

    Anthony

  • 0 in reply to AnBer
    TI__Mastermind 30190 points

    see as well:
    https://gstreamer.ti.com/gf/project/pru_sw/