65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/* Copyright 2020 Alexander Tulloh
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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 2 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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdint.h>
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#ifndef ADNS9800_CPI
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# define ADNS9800_CPI 1600
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#endif
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#ifndef ADNS9800_CLOCK_SPEED
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# define ADNS9800_CLOCK_SPEED 2000000
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#endif
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#ifndef ADNS9800_SPI_LSBFIRST
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# define ADNS9800_SPI_LSBFIRST false
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#endif
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#ifndef ADNS9800_SPI_MODE
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# define ADNS9800_SPI_MODE 3
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#endif
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#ifndef ADNS9800_SPI_DIVISOR
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# ifdef __AVR__
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# define ADNS9800_SPI_DIVISOR (F_CPU / ADNS9800_CLOCK_SPEED)
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# else
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# define ADNS9800_SPI_DIVISOR 64
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# endif
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#endif
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#ifndef ADNS9800_CS_PIN
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# error "No chip select pin defined -- missing ADNS9800_CS_PIN"
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#endif
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typedef struct {
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/* 200 - 8200 CPI supported */
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uint16_t cpi;
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} config_adns9800_t;
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typedef struct {
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int16_t x;
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int16_t y;
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} report_adns9800_t;
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void adns9800_init(void);
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config_adns9800_t adns9800_get_config(void);
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void adns9800_set_config(config_adns9800_t);
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uint16_t adns9800_get_cpi(void);
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void adns9800_set_cpi(uint16_t cpi);
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/* Reads and clears the current delta values on the ADNS sensor */
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report_adns9800_t adns9800_get_report(void);
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