93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
#pragma once
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#include "../../drivers/ioexpander/ioexpander.hpp"
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namespace pimoroni {
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class BreakoutEncoder {
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//--------------------------------------------------
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// Enums
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//--------------------------------------------------
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public:
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enum Direction : bool {
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DIRECTION_CW = true,
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DIRECTION_CCW = false
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};
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//--------------------------------------------------
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// Constants
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//--------------------------------------------------
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public:
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static const uint8_t DEFAULT_I2C_ADDRESS = 0x0F;
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static constexpr float DEFAULT_BRIGHTNESS = 1.0f; //Effectively the maximum fraction of the period that the LED will be on
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static const Direction DEFAULT_DIRECTION = DIRECTION_CW;
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static const uint8_t PIN_UNUSED = UINT8_MAX;
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static const uint32_t DEFAULT_TIMEOUT = 1;
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private:
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static const uint8_t LED_R = 1;
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static const uint8_t LED_G = 7;
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static const uint8_t LED_B = 2;
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static const uint8_t ENC_TERM_A = 12;
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static const uint8_t ENC_TERM_B = 3;
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static const uint8_t ENC_TERM_C = 11;
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static const uint8_t ENC_CHANNEL = 1;
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static const bool INVERT_OUTPUT = true; //true for common cathode, false for common anode
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//--------------------------------------------------
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// Variables
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//--------------------------------------------------
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private:
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IOExpander ioe;
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Direction direction = DEFAULT_DIRECTION;
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float brightness = DEFAULT_BRIGHTNESS;
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uint8_t interrupt_pin = PIN_UNUSED; // A local copy of the value passed to the IOExpander, used in initialisation
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//--------------------------------------------------
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// Constructors/Destructor
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//--------------------------------------------------
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public:
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BreakoutEncoder() :
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ioe(DEFAULT_I2C_ADDRESS) {}
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BreakoutEncoder(uint8_t address) :
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ioe(address) {}
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BreakoutEncoder(i2c_inst_t *i2c, uint8_t address, uint8_t sda, uint8_t scl, uint8_t interrupt = PIN_UNUSED, uint32_t timeout = DEFAULT_TIMEOUT) :
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ioe(i2c, address, sda, scl, interrupt, timeout),
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interrupt_pin(interrupt) {}
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//--------------------------------------------------
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// Methods
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//--------------------------------------------------
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public:
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bool init(bool skip_chip_id_check = false);
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// For print access in micropython
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i2c_inst_t* get_i2c() const;
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int get_sda() const;
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int get_scl() const;
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int get_int() const;
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// Calls through to IOExpander class
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void set_address(uint8_t address);
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// Encoder breakout specific
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Direction get_direction();
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void set_direction(Direction direction);
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void set_brightness(float brightness);
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void set_led(uint8_t r, uint8_t g, uint8_t b);
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bool available();
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int16_t read();
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};
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} |