103 lines
3.7 KiB
C
103 lines
3.7 KiB
C
// Copyright (c) 2018 Cirque Corp. Restrictions apply. See: www.cirque.com/sw-license
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#pragma once
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#include "cirque_pinnacle_regdefs.h"
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#include <stdint.h>
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#include <stdbool.h>
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#ifndef CIRQUE_PINNACLE_TIMEOUT
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# define CIRQUE_PINNACLE_TIMEOUT 20 // I2C timeout in milliseconds
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#endif
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#define CIRQUE_PINNACLE_ABSOLUTE_MODE 1
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#define CIRQUE_PINNACLE_RELATIVE_MODE 0
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#ifndef CIRQUE_PINNACLE_POSITION_MODE
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# define CIRQUE_PINNACLE_POSITION_MODE CIRQUE_PINNACLE_ABSOLUTE_MODE
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#endif
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#define CIRQUE_PINNACLE_DEFAULT_SCALE 1024
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#ifndef CIRQUE_PINNACLE_DIAMETER_MM
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# define CIRQUE_PINNACLE_DIAMETER_MM 40
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#endif
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// Coordinate scaling values
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#ifndef CIRQUE_PINNACLE_X_LOWER
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# define CIRQUE_PINNACLE_X_LOWER 127 // min "reachable" X value
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#endif
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#ifndef CIRQUE_PINNACLE_X_UPPER
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# define CIRQUE_PINNACLE_X_UPPER 1919 // max "reachable" X value
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#endif
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#ifndef CIRQUE_PINNACLE_Y_LOWER
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# define CIRQUE_PINNACLE_Y_LOWER 63 // min "reachable" Y value
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#endif
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#ifndef CIRQUE_PINNACLE_Y_UPPER
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# define CIRQUE_PINNACLE_Y_UPPER 1471 // max "reachable" Y value
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#endif
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#ifndef CIRQUE_PINNACLE_X_RANGE
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# define CIRQUE_PINNACLE_X_RANGE (CIRQUE_PINNACLE_X_UPPER - CIRQUE_PINNACLE_X_LOWER)
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#endif
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#ifndef CIRQUE_PINNACLE_Y_RANGE
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# define CIRQUE_PINNACLE_Y_RANGE (CIRQUE_PINNACLE_Y_UPPER - CIRQUE_PINNACLE_Y_LOWER)
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#endif
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#if !defined(POINTING_DEVICE_TASK_THROTTLE_MS)
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# define POINTING_DEVICE_TASK_THROTTLE_MS 10 // Cirque Pinnacle in normal operation produces data every 10ms. Advanced configuration for pen/stylus usage might require lower values.
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#endif
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#if defined(POINTING_DEVICE_DRIVER_cirque_pinnacle_i2c)
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# include "i2c_master.h"
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// Cirque's 7-bit I2C Slave Address
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# ifndef CIRQUE_PINNACLE_ADDR
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# define CIRQUE_PINNACLE_ADDR I2C_ADDRESS_DEFAULT
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# endif
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#elif defined(POINTING_DEVICE_DRIVER_cirque_pinnacle_spi)
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# include "spi_master.h"
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# ifndef CIRQUE_PINNACLE_CLOCK_SPEED
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# define CIRQUE_PINNACLE_CLOCK_SPEED 10000000
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# endif
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# ifndef CIRQUE_PINNACLE_SPI_LSBFIRST
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# define CIRQUE_PINNACLE_SPI_LSBFIRST false
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# endif
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# ifndef CIRQUE_PINNACLE_SPI_MODE
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# define CIRQUE_PINNACLE_SPI_MODE 1
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# endif
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# ifndef CIRQUE_PINNACLE_SPI_DIVISOR
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# ifdef __AVR__
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# define CIRQUE_PINNACLE_SPI_DIVISOR (F_CPU / CIRQUE_PINNACLE_CLOCK_SPEED)
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# else
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# define CIRQUE_PINNACLE_SPI_DIVISOR 64
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# endif
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# ifndef CIRQUE_PINNACLE_SPI_CS_PIN
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# error "No Chip Select pin has been defined -- missing CIRQUE_PINNACLE_SPI_CS_PIN define"
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# endif
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# endif
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#endif
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#define DIVIDE_UNSIGNED_ROUND(numerator, denominator) (((numerator) + ((denominator) / 2)) / (denominator))
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#define CIRQUE_PINNACLE_INCH_TO_PX(inch) (DIVIDE_UNSIGNED_ROUND((inch) * (uint32_t)CIRQUE_PINNACLE_DIAMETER_MM * 10, 254))
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#define CIRQUE_PINNACLE_PX_TO_INCH(px) (DIVIDE_UNSIGNED_ROUND((px) * (uint32_t)254, CIRQUE_PINNACLE_DIAMETER_MM * 10))
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// Convenient way to store and access measurements
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typedef struct {
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bool valid; // true if valid data was read, false if no data was ready
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#if CIRQUE_PINNACLE_POSITION_MODE
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uint16_t xValue;
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uint16_t yValue;
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uint16_t zValue;
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uint8_t buttonFlags;
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bool touchDown;
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#else
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uint8_t xDelta;
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uint8_t yDelta;
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uint8_t wheelCount;
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uint8_t buttons;
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#endif
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} pinnacle_data_t;
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void cirque_pinnacle_init(void);
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void cirque_pinnacle_calibrate(void);
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void cirque_pinnacle_cursor_smoothing(bool enable);
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pinnacle_data_t cirque_pinnacle_read_data(void);
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void cirque_pinnacle_scale_data(pinnacle_data_t* coordinates, uint16_t xResolution, uint16_t yResolution);
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uint16_t cirque_pinnacle_get_scale(void);
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void cirque_pinnacle_set_scale(uint16_t scale);
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