/**
 * Copyright (c) 2012 - 2017, Nordic Semiconductor ASA
 * 
 * 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, except as embedded into a Nordic
 *    Semiconductor ASA integrated circuit in a product or a software update for
 *    such product, 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 of Nordic Semiconductor ASA nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 * 
 * 4. This software, with or without modification, must only be used with a
 *    Nordic Semiconductor ASA integrated circuit.
 * 
 * 5. Any software provided in binary form under this license must not be reverse
 *    engineered, decompiled, modified and/or disassembled.
 * 
 * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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 * 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.
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 */

#ifndef __NRF_MOUSE_SENSOR_H
#define __NRF_MOUSE_SENSOR_H

/**
 * @file
 * @brief Mouse Emulator API
 */


/**
 * @defgroup gzp_mouse_emulator Mouse Emulator
 * @{
 * @ingroup gzp_desktop_device_emulator_example
 * @brief  Emulates a mouse using one of the nRF51's timer peripherals.
 */

#include "nrf.h"
#include <stdint.h>
#include <stdbool.h>
#include "nrf_gzllde_params.h"

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @enum mouse_sensor_sample_period_t
 * @brief Enumerator used for setting the mouse sensor sample period.
 */
typedef enum
{
    MOUSE_SENSOR_SAMPLE_PERIOD_4_MS, ///<  Generate new mouse sample every 4 ms.
    MOUSE_SENSOR_SAMPLE_PERIOD_8_MS, ///<  Generate new mouse sample every 8 ms.
} mouse_sensor_sample_period_t;

/**
 * @brief Function for initializing the mouse sensor.
 *
 * @param sample_period specifies the mouse sensor sample period.
 *
 * @retval true If initialization succeeded.
 * @retval false If initialization failed.
 */
bool mouse_sensor_init(mouse_sensor_sample_period_t sample_period);

/**
 * @brief Enable mouse sensor.
 *
 * When enabled, the mouse sensor will start generating mouse movement samples
 * at the rate given by mouse_sensor_init(void).
 */
void mouse_sensor_enable(void);

/**
 * @brief Disable mouse sensor.
 */
void mouse_sensor_disable(void);

/**
 * @brief Function for polling if the mouse sensor
 * has data available for readout.
 *
 * @retval true If there is data available for reading.
 * @retval false If no data is available for reading.
 *
 * @sa mouse_sensor_read(void)
 */
bool mouse_sensor_data_is_ready(void);

/**
 * @brief Function for reading motion samples from the the mouse
 * sensor.
 *
 * The mouse sensor will generate a new sample at a rate given by
 * mouse_sensor_init(). If multiple samples are generated by the mouse sensor
 * between each call of this function, the samples will be accumulated.
 * Thus, the mouse packet returned by this function will tell the relative
 * movement of the mouse since the previous time this function was called.
 * The internal accumulator is cleared whenever the mouse sensor is read.
 *
 * @param out_mouse_packet returns an assembled mouse movement packet
 * (no buttons) as specified in "nrfdvl_params.h" .
 *
 * The length of the mouse packet is given by NRFR_MOUSE_MOV_PACKET_LENGTH.
 *
 * @retval true If a new packet was written to out_mouse_packet *.
 * @retval false If no new mouse data was available.
 */
bool mouse_sensor_read(uint8_t * out_mouse_packet);

// lint -save -esym(522,mouse_sensor_new_sample_generated_cb)
/**
 * @brief Callback function called when a new sample is generated
 * by the mouse sensor. When the mouse sensor is enabled, this
 * function will be called at a rate as specified by mouse_sensor_init().
 */
void mouse_sensor_new_sample_generated_cb(void);
// lint -restore

/** @} */

#ifdef __cplusplus
}
#endif

#endif
