/* 
 * Copyright (c) 2016, Ian Sutton <ian@kremlin.cc>
 *
 * Permission to use, copy, modify, and/or distribute this software for
 * any purpose with or without fee is hereby granted, provided that the
 * above copyright notice and this permission notice appear in all
 * copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>

#include <pruss/prussdrv.h>
#include <pruss/pruss_intc_mapping.h>

#define PRU_NUM 1

int main(int argc, char *argv[]) {

	tpruss_intc_initdata init_data = PRUSS_INTC_INITDATA;

	if(argc < 2) {
	    printf("usage: %s <obj>\n", argv[0]);
	    return EINVAL;
	} else if(geteuid()) {
	    printf("%s\n", "run as root");
	    return EACCES;
	}

	/* init pru drv */
	if(prussdrv_init())
	    return ENXIO;

	/* open, bind intr */
	if(prussdrv_open(PRU_EVTOUT_0))
	    return ENXIO;
	if(prussdrv_pruintc_init(&init_data))
	    return ENXIO;

	/* exec */
	if(prussdrv_exec_program(PRU_NUM, argv[1]))
	    return ENXIO;

	/* block until intr */
	prussdrv_pru_wait_event(PRU_EVTOUT_0);

	/* clean up, halt & disable pru, terminate pru drv */
	prussdrv_pru_clear_event(PRU_EVTOUT_0, PRU0_ARM_INTERRUPT);
	prussdrv_pru_disable(PRU_NUM);
	prussdrv_exit();

	return 0;
}