text: // Copyright (c) 2014 Brad J. Tarratt
  
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  
  // The above copyright notice and this permission notice shall be included in all
  // copies or substantial portions of the Software.
  
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  // SOFTWARE.
  
  #include <prussdrv.h>
  #include <pruss_intc_mapping.h>
  #include <stdio.h>
  #include <unistd.h>
  #include <stdlib.h>
  #include <fcntl.h>
  #include "util.h"
  #include <string.h>
  
  int main (int argc, char **argv)
  {
    int f;
    int i;
    unsigned char *buf;
  
    pruinit(&argc, argv, AUXPRU);
  
    if (argc != 2) {
      fprintf(stderr, "Usage: %s <somefile.raw>\n", argv[0]);
      return 0;
      }
  
    f = open(argv[1], O_RDONLY);
  
    if (f == -1) {
      fprintf(stderr, "Cannot open %s\n", argv[1]);
      return 0;
      }
  
    buf = mydram();
  
    read(f, buf, 8192);
  
    prussdrv_pru_clear_event (PRU_EVTOUT_0, PRU0_ARM_INTERRUPT);
  
    while (1) {
       i = prussdrv_pru_wait_event (PRU_EVTOUT_0);
       prussdrv_pru_clear_event (PRU_EVTOUT_0, PRU0_ARM_INTERRUPT);
       printf("%d: loading 4k\n", i);
       if (!read(f, buf, 4096)) {
         return 0;
         }
       i = prussdrv_pru_wait_event (PRU_EVTOUT_0);
       prussdrv_pru_clear_event (PRU_EVTOUT_0, PRU0_ARM_INTERRUPT);
       printf("%d: loading another 4k\n", i);
       if (!read(f, buf+4096, 4096)) {
         return 0;
         }
       prussdrv_pru_clear_event (PRU_EVTOUT_0, PRU0_ARM_INTERRUPT);
      }
  
    return(0);
  }
  
  