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/****************************************************************************
*
* Copyright (c) 2014 PX4 Development Team. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name PX4 nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/*
* @file circuit_breaker.c
*
* Circuit breaker parameters.
* Analog to real aviation circuit breakers these parameters
* allow to disable subsystems. They are not supported as standard
* operation procedure and are only provided for development purposes.
* To ensure they are not activated accidentally, the associated
* parameter needs to set to the key (magic).
*/
#include <systemlib/param/param.h>
#include <systemlib/circuit_breaker.h>
/**
* Circuit breaker for power supply check
*
* Setting this parameter to 894281 will disable the power valid
* checks in the commander.
* WARNING: ENABLING THIS CIRCUIT BREAKER IS AT OWN RISK
*
* @min 0
* @max 894281
* @group Circuit Breaker
*/
PARAM_DEFINE_INT32(CBRK_SUPPLY_CHK, 0);
/**
* Circuit breaker for rate controller output
*
* Setting this parameter to 140253 will disable the rate
* controller uORB publication.
* WARNING: ENABLING THIS CIRCUIT BREAKER IS AT OWN RISK
*
* @min 0
* @max 140253
* @group Circuit Breaker
*/
PARAM_DEFINE_INT32(CBRK_RATE_CTRL, 0);
/**
* Circuit breaker for IO safety
*
* Setting this parameter to 894281 will disable IO safety.
* WARNING: ENABLING THIS CIRCUIT BREAKER IS AT OWN RISK
*
* @min 0
* @max 22027
* @group Circuit Breaker
*/
PARAM_DEFINE_INT32(CBRK_IO_SAFETY, 0);
bool circuit_breaker_enabled(const char* breaker, int32_t magic)
{
int32_t val;
(void)param_get(param_find(breaker), &val);
return (val == magic);
}
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