/* Copyright 2020 Christopher Courtney, aka Drashna Jael're (@drashna) <drashna@live.com> * Copyright 2019 Sunjun Kim * Copyright 2020 Ploopy Corporation * * 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 PMW3360_CPI # define PMW3360_CPI 1600 #endif #ifndef PMW3360_CLOCK_SPEED # define PMW3360_CLOCK_SPEED 2000000 #endif #ifndef PMW3360_SPI_LSBFIRST # define PMW3360_SPI_LSBFIRST false #endif #ifndef PMW3360_SPI_MODE # define PMW3360_SPI_MODE 3 #endif #ifndef PMW3360_SPI_DIVISOR # ifdef __AVR__ # define PMW3360_SPI_DIVISOR (F_CPU / PMW3360_CLOCK_SPEED) # else # define PMW3360_SPI_DIVISOR 64 # endif #endif #ifndef PMW3360_LIFTOFF_DISTANCE # define PMW3360_LIFTOFF_DISTANCE 0x02 #endif #ifndef ROTATIONAL_TRANSFORM_ANGLE # define ROTATIONAL_TRANSFORM_ANGLE 0x00 #endif // Support single and plural spellings #ifndef PMW3360_CS_PINS # ifndef PMW3360_CS_PIN # error "No chip select pin defined -- missing PMW3360_CS_PIN or PMW3360_CS_PINS" # else # define PMW3360_CS_PINS \ { PMW3360_CS_PIN } # endif #endif typedef struct { int8_t motion; bool isMotion; // True if a motion is detected. bool isOnSurface; // True when a chip is on a surface int16_t dx; // displacement on x directions. Unit: Count. (CPI * Count = Inch value) int8_t mdx; int16_t dy; // displacement on y directions. int8_t mdy; } report_pmw3360_t; bool pmw3360_init(int8_t index); uint16_t pmw3360_get_cpi(void); void pmw3360_set_cpi(uint16_t cpi); /* Reads and clears the current delta values on the sensor */ report_pmw3360_t pmw3360_read_burst(int8_t index);