joystick12.h

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/*
 * Author: Noel Eck <noel.eck@intel.com>
 * Copyright (c) 2015 Intel Corporation.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

#pragma once

#include "upm.h"
#include "mraa/aio.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef struct _joystick12_context {
    /* mraa ai_x pin context */
    mraa_aio_context ai_x;
    /* mraa ai_y pin context */
    mraa_aio_context ai_y;
    /* Raw count offset - x axis */
    float m_count_offset_x;
    /* Raw count offset - y axis */
    float m_count_offset_y;
    /* Raw count scale - x axis */
    float m_count_scale_x;
    /* Raw count scale - y axis */
    float m_count_scale_y;
} *joystick12_context;

joystick12_context joystick12_init(int16_t apin_x, int16_t apin_y);

void joystick12_close(joystick12_context dev);

upm_result_t joystick12_read_data(const joystick12_context dev, int* values);

upm_result_t joystick12_set_offset_x(const joystick12_context dev,
                                     float offset);

upm_result_t joystick12_set_offset_y(const joystick12_context dev,
                                     float offset);

upm_result_t joystick12_set_scale_x(const joystick12_context dev, float scale);

upm_result_t joystick12_set_scale_y(const joystick12_context dev, float scale);

upm_result_t joystick12_get_value_x(const joystick12_context dev, float *value);

upm_result_t joystick12_get_value_y(const joystick12_context dev, float *value);

upm_result_t joystick12_zero(const joystick12_context dev);

upm_result_t joystick12_calibrate_x(const joystick12_context dev);

upm_result_t joystick12_calibrate_y(const joystick12_context dev);

#ifdef __cplusplus
}
#endif