77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/* Copyright 2021 Gompa (@Gompa)
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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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#include <stdbool.h>
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#ifndef PAW3204_SCLK_PIN
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# ifdef POINTING_DEVICE_SCLK_PIN
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# define PAW3204_SCLK_PIN POINTING_DEVICE_SCLK_PIN
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# else
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# error "No clock pin defined -- missing POINTING_DEVICE_SCLK_PIN or PAW3204_SCLK_PIN"
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# endif
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#endif
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#ifndef PAW3204_SDIO_PIN
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# ifdef POINTING_DEVICE_SDIO_PIN
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# define PAW3204_SDIO_PIN POINTING_DEVICE_SDIO_PIN
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# else
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# error "No data pin defined -- missing POINTING_DEVICE_SDIO_PIN or PAW3204_SDIO_PIN"
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# endif
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#endif
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typedef struct {
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int16_t x;
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int16_t y;
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bool isMotion;
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} report_paw3204_t;
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/**
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* @brief Initializes the sensor so it is in a working state and ready to
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* be polled for data.
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*
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* @return true Initialization was a success
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* @return false Initialization failed, do not proceed operation
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*/
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void paw3204_init(void);
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/**
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* @brief Reads and clears the current delta, and motion register values on the
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* given sensor.
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*
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* @return pmw33xx_report_t Current values of the sensor, if errors occurred all
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* fields are set to zero
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*/
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report_paw3204_t paw3204_read(void);
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/**
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* @brief Sets the given CPI value the sensor. CPI is often refereed to
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* as the sensors sensitivity. Values outside of the allowed range are
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* constrained into legal values.
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*
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* @param cpi CPI value to set
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*/
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void paw3204_set_cpi(uint16_t cpi);
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/**
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* @brief Gets the currently set CPI value from the sensor. CPI is often
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* refereed to as the sensors sensitivity.
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*
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* @return uint16_t Current CPI value of the sensor
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*/
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uint16_t paw3204_get_cpi(void);
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