How to Create an Instance of RPC (Remote Procedural Call) using the NRF52840

Hello,

I'm using SDK 17.0.2 with S113, v7.2.0 on the NRF52840. We currently have an instance of CLI running in our executive loop, and it works fine. We'd also like to implement RPC as well for calling functions from a remote processor. 

This is what we have so far:

    // Entering executive loop. Please note, the system WILL NOT EXIT this loop
    // unless a reset occurs.
    for ( ;; )
    {

        if (getRpcActivateFlagStatus())
        {   
            // Then service the RPC bytes!
            rpcServerBytePull(); // Not working
        }
        else
        {
             nrf_cli_process(&m_cli_uart); // Working fine
        }

        idle_state_handle();
             
        // Handle all of the events that were scheduled in the EMQ per
        // iteration of our executive loop. Please note, this is an nRF
        // driver-level API, which dispatches all pushed events to the system
        // EMQ (Event Message Queue).
        app_sched_execute();

    }

Is there a special HW flag in sdk_config.h that needs to be set in order for RPC to operate on UART? My sdk_config.h already enables UART by the way. Also, are there any examples of RPC that I can follow as our SDK does. not come with an RPC example.

Parents Reply
  • Can you explain in more detail what you mean by "system simply gets lost and is unresponsive"? You should be able to see where the code is stuck with a debugger. If you can provide a minimal example and instructions to reproduce this behavior, we may be able to help debug it.

    Do you have a softdevice enabled when doing the stepping through code? Stepping with the softdevice enabled will usually cause asserts, as the debugger blocks the softdevice to handle timing-critical interrupts/tasks.

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