px4_cli.cpp
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/****************************************************************************
*
* Copyright (c) 2018 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.
*
****************************************************************************/
#include <parameters/param.h>
#include <px4_platform_common/cli.h>
#ifndef MODULE_NAME
#define MODULE_NAME "cli"
#endif
#include <px4_platform_common/log.h>
#include <cstring>
#include <errno.h>
#include <cstdlib>
int px4_get_parameter_value(const char *option, int &value)
{
value = 0;
/* check if this is a param name */
if (strncmp("p:", option, 2) == 0) {
const char *param_name = option + 2;
/* user wants to use a param name */
param_t param_handle = param_find(param_name);
if (param_handle != PARAM_INVALID) {
if (param_type(param_handle) != PARAM_TYPE_INT32) {
return -EINVAL;
}
int32_t pwm_parm;
int ret = param_get(param_handle, &pwm_parm);
if (ret != 0) {
return ret;
}
value = pwm_parm;
} else {
PX4_ERR("param name '%s' not found", param_name);
return -ENXIO;
}
} else {
char *ep;
value = strtol(option, &ep, 0);
if (*ep != '\0') {
return -EINVAL;
}
}
return 0;
}