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66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/**
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******************************************************************************
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*
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* @file pios_sensors.c
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* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2014.
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* @brief PiOS sensors handling
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* --
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* @see The GNU Public License (GPL) Version 3
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*
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*****************************************************************************/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <pios_mem.h>
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#include <pios_sensors.h>
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#include <string.h>
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// private variables
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static PIOS_SENSORS_Instance *sensor_list = 0;
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PIOS_SENSORS_Instance *PIOS_SENSORS_Register(const PIOS_SENSORS_Driver *driver, PIOS_SENSORS_TYPE type, uintptr_t context)
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{
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PIOS_SENSORS_Instance *instance = (PIOS_SENSORS_Instance *)pios_malloc(sizeof(PIOS_SENSORS_Instance));
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instance->driver = driver;
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instance->type = type;
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instance->context = context;
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instance->next = NULL;
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LL_APPEND(sensor_list, instance);
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return instance;
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}
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PIOS_SENSORS_Instance *PIOS_SENSORS_GetList()
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{
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return sensor_list;
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}
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PIOS_SENSORS_Instance *PIOS_SENSORS_GetInstanceByType(const PIOS_SENSORS_Instance *previous_instance, PIOS_SENSORS_TYPE type)
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{
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if (!previous_instance) {
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previous_instance = sensor_list;
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}
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PIOS_SENSORS_Instance *sensor;
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LL_FOREACH((PIOS_SENSORS_Instance *)previous_instance, sensor) {
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if (sensor->type && type) {
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return sensor;
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}
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}
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return NULL;
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}
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