[En-Nut-Discussion] Any way to get an interupt (NutEventWait) when a UART RX buffer has something in it?

zonedar sholder at summitsemi.com
Fri Nov 8 20:44:31 CET 2013

Hi  all

I've got a UART (ARM7) that may get unexpected asynchronous input.  I have
multiple threads running and if the UART gets something, I like to switch
that thread and service the UART (read the buffer).

  Is there a something like an internal interrupt that I can use or some how
use NutEventWait?

  Right now I'm polling and checking the buffer.  It works but I don't like
it and I'm afraid it's slow and I might be missing something.

THREAD( AppCommandServer, arg)

        int j;

        parm = 1;  //textmode
        _ioctl(_fileno(cons), UART_SETCOOKEDMODE, &parm);
        _ioctl(_fileno(cons), UART_GETSTATUS, &parm);
        if  (parm & UART_RXBUFFEREMPTY)  //if empty
           // printf("RX: Buffer Empty\n");

     }  //end of for(;;)



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