actuators_mkk.c

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/*
 * Copyright (C) 2008-2009 Antoine Drouin <poinix@gmail.com>
 *
 * This file is part of paparazzi.
 *
 * paparazzi is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * paparazzi is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with paparazzi; see the file COPYING.  If not, write to
 * the Free Software Foundation, 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#include "subsystems/actuators.h"
#include "subsystems/actuators/actuators_mkk.h"

#include "mcu_periph/i2c.h"
#include "mcu_periph/sys_time.h"

PRINT_CONFIG_VAR(ACTUATORS_MKK_I2C_DEV)

struct ActuatorsMkk actuators_mkk;


void actuators_mkk_init(void)
{
  actuators_mkk.submit_err_cnt = 0;
}


void actuators_mkk_set(void)
{
  const uint8_t actuators_addr[ACTUATORS_MKK_NB] = ACTUATORS_MKK_ADDR;
  static uint8_t last_idx = ACTUATORS_MKK_NB;

#if defined ACTUATORS_START_DELAY && ! defined SITL
  if (!actuators_delay_done) {
    if (SysTimeTimer(actuators_delay_time) < USEC_OF_SEC(ACTUATORS_START_DELAY)) {
      return;
    } else {
      actuators_delay_done = true;
    }
  }
#endif

  uint8_t cur_idx = last_idx;
  for (uint8_t i = 0; i < ACTUATORS_MKK_NB; i++) {
    if (cur_idx >= ACTUATORS_MKK_NB) {
      cur_idx = 0;
    }
#ifdef KILL_MOTORS
    actuators_mkk.trans[cur_idx].buf[0] = 0;
#endif
    if (!i2c_transmit(&ACTUATORS_MKK_I2C_DEV, &actuators_mkk.trans[cur_idx],
                      actuators_addr[cur_idx], 1)) {
      actuators_mkk.submit_err_cnt++;
      last_idx = cur_idx;
      return;
    }
    cur_idx++;
  }
  /* successfully submitted all transactions */
  last_idx = ACTUATORS_MKK_NB;
}