ppm_arch.h

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/*
 * Copyright (C) 2010-2014 The Paparazzi Team
 *
 * 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, see
 * <http://www.gnu.org/licenses/>.
 */

#ifndef PPM_ARCH_H
#define PPM_ARCH_H


#include "LPC21xx.h"
#include BOARD_CONFIG

#include "mcu_periph/sys_time.h"

#define RC_PPM_TICKS_OF_USEC(_v)        cpu_ticks_of_usec(_v)
#define RC_PPM_SIGNED_TICKS_OF_USEC(_v) signed_cpu_ticks_of_usec(_v)
#define USEC_OF_RC_PPM_TICKS(_v)        usec_of_cpu_ticks(_v)

#define PPM_IT PPM_CRI

#define PPM_ISR() {       \
    uint32_t now = PPM_CR;  \
    ppm_decode_frame(now);  \
  }

#ifdef USE_PPM_RSSI_GPIO
#define RssiValid() (bit_is_set(PPM_RSSI_IOPIN, PPM_RSSI_PIN) == PPM_RSSI_VALID_LEVEL)
#endif


#endif /* PPM_ARCH_H */