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/* Copyright 2020 Alexander Tulloh
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <stdint.h>
#ifndef ADNS9800_CPI
# define ADNS9800_CPI 1600
#endif
#ifndef ADNS9800_CLOCK_SPEED
# define ADNS9800_CLOCK_SPEED 2000000
#endif
#ifndef ADNS9800_SPI_LSBFIRST
# define ADNS9800_SPI_LSBFIRST false
#endif
#ifndef ADNS9800_SPI_MODE
# define ADNS9800_SPI_MODE 3
#endif
#ifndef ADNS9800_SPI_DIVISOR
# ifdef __AVR__
# define ADNS9800_SPI_DIVISOR (F_CPU / ADNS9800_CLOCK_SPEED)
# else
# define ADNS9800_SPI_DIVISOR 64
# endif
#endif
#ifndef ADNS9800_CS_PIN
# ifdef POINTING_DEVICE_CS_PIN
# define ADNS9800_CS_PIN POINTING_DEVICE_CS_PIN
# else
# error "No chip select pin defined -- missing POINTING_DEVICE_CS_PIN or ADNS9800_CS_PIN"
# endif
#endif
typedef struct {
/* 200 - 8200 CPI supported */
uint16_t cpi;
} config_adns9800_t;
typedef struct {
int16_t x;
int16_t y;
} report_adns9800_t;
void adns9800_init(void);
config_adns9800_t adns9800_get_config(void);
void adns9800_set_config(config_adns9800_t);
uint16_t adns9800_get_cpi(void);
void adns9800_set_cpi(uint16_t cpi);
/* Reads and clears the current delta values on the ADNS sensor */
report_adns9800_t adns9800_get_report(void);
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