adns9800.h (2112B)
1 /* Copyright 2020 Alexander Tulloh 2 * 3 * This program is free software: you can redistribute it and/or modify 4 * it under the terms of the GNU General Public License as published by 5 * the Free Software Foundation, either version 2 of the License, or 6 * (at your option) any later version. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 17 #pragma once 18 19 #include <stdint.h> 20 #include "pointing_device.h" 21 22 #ifndef ADNS9800_CPI 23 # define ADNS9800_CPI 1600 24 #endif 25 26 #ifndef ADNS9800_CLOCK_SPEED 27 # define ADNS9800_CLOCK_SPEED 2000000 28 #endif 29 30 #ifndef ADNS9800_SPI_LSBFIRST 31 # define ADNS9800_SPI_LSBFIRST false 32 #endif 33 34 #ifndef ADNS9800_SPI_MODE 35 # define ADNS9800_SPI_MODE 3 36 #endif 37 38 #ifndef ADNS9800_SPI_DIVISOR 39 # ifdef __AVR__ 40 # define ADNS9800_SPI_DIVISOR (F_CPU / ADNS9800_CLOCK_SPEED) 41 # else 42 # define ADNS9800_SPI_DIVISOR 64 43 # endif 44 #endif 45 46 #ifndef ADNS9800_CS_PIN 47 # ifdef POINTING_DEVICE_CS_PIN 48 # define ADNS9800_CS_PIN POINTING_DEVICE_CS_PIN 49 # else 50 # error "No chip select pin defined -- missing POINTING_DEVICE_CS_PIN or ADNS9800_CS_PIN" 51 # endif 52 #endif 53 54 typedef struct { 55 /* 200 - 8200 CPI supported */ 56 uint16_t cpi; 57 } config_adns9800_t; 58 59 typedef struct { 60 int16_t x; 61 int16_t y; 62 } report_adns9800_t; 63 64 extern const pointing_device_driver_t adns9800_pointing_device_driver; 65 66 bool adns9800_init(void); 67 config_adns9800_t adns9800_get_config(void); 68 void adns9800_set_config(config_adns9800_t); 69 uint16_t adns9800_get_cpi(void); 70 void adns9800_set_cpi(uint16_t cpi); 71 /* Reads and clears the current delta values on the ADNS sensor */ 72 report_adns9800_t adns9800_get_report(void); 73 report_mouse_t adns9800_get_report_driver(report_mouse_t mouse_report);