/** Program to load a PRU program that flashes an LED until a button is
*   pressed. By Derek Molloy, for the book Exploring BeagleBone
*   based on the example code at:
*   http://processors.wiki.ti.com/index.php/PRU_Linux_Application_Loader_API_Guide
*/

#include <stdio.h>
#include <stdlib.h>
#include <prussdrv.h>
#include <pruss_intc_mapping.h>

#define PRU_NUM	0   // using PRU0 for these examples

int main (void)
{
   if(getuid()!=0){
      printf("You must run this program as root. Exiting.\n");
      exit(EXIT_FAILURE);
   }
   // Initialize structure used by prussdrv_pruintc_intc
   // PRUSS_INTC_INITDATA is found in pruss_intc_mapping.h
   tpruss_intc_initdata pruss_intc_initdata = PRUSS_INTC_INITDATA;

   // Allocate and initialize memory
   prussdrv_init ();
   prussdrv_open (PRU_EVTOUT_0);

   // Map PRU's interrupts
   prussdrv_pruintc_init(&pruss_intc_initdata);

   // Load and execute the PRU program on the PRU
   prussdrv_exec_program (PRU_NUM, "./FixedPRUClock.bin");
   printf("EBB fixed-frequency clock PRU program now running\n");

   prussdrv_exit ();
   return EXIT_SUCCESS;
}