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95 lines
2.5 KiB
C++
95 lines
2.5 KiB
C++
#pragma once
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#include "esphome/core/component.h"
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#include "esphome/core/hal.h"
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#include "esphome/components/i2c/i2c.h"
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namespace esphome {
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namespace max6956 {
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/// Modes for MAX6956 pins
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enum MAX6956GPIOMode : uint8_t {
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MAX6956_LED = 0x00,
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MAX6956_OUTPUT = 0x01,
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MAX6956_INPUT = 0x02,
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MAX6956_INPUT_PULLUP = 0x03
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};
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/// Range for MAX6956 pins
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enum MAX6956GPIORange : uint8_t {
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MAX6956_MIN = 4,
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MAX6956_MAX = 31,
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};
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enum MAX6956GPIORegisters {
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MAX6956_GLOBAL_CURRENT = 0x02,
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MAX6956_CONFIGURATION = 0x04,
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MAX6956_TRANSITION_DETECT_MASK = 0x06,
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MAX6956_DISPLAY_TEST = 0x07,
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MAX6956_PORT_CONFIG_START = 0x09, // Port Configuration P7, P6, P5, P4
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MAX6956_CURRENT_START = 0x12, // Current054
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MAX6956_1PORT_VALUE_START = 0x20, // Port 0 only (virtual port, no action)
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MAX6956_8PORTS_VALUE_START = 0x44, // 8 ports 4-11 (data bits D0-D7)
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};
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enum MAX6956GPIOFlag { FLAG_LED = 0x20 };
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enum MAX6956CURRENTMODE { GLOBAL = 0x00, SEGMENT = 0x01 };
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class MAX6956 : public Component, public i2c::I2CDevice {
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public:
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MAX6956() = default;
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void setup() override;
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bool digital_read(uint8_t pin);
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void digital_write(uint8_t pin, bool value);
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void pin_mode(uint8_t pin, gpio::Flags flags);
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void pin_mode(uint8_t pin, max6956::MAX6956GPIOFlag flags);
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float get_setup_priority() const override { return setup_priority::HARDWARE; }
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void set_brightness_global(uint8_t current);
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void set_brightness_mode(max6956::MAX6956CURRENTMODE brightness_mode);
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void set_pin_brightness(uint8_t pin, float brightness);
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void dump_config() override;
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void write_brightness_global();
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void write_brightness_mode();
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protected:
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// read a given register
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bool read_reg_(uint8_t reg, uint8_t *value);
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// write a value to a given register
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bool write_reg_(uint8_t reg, uint8_t value);
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max6956::MAX6956CURRENTMODE brightness_mode_;
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uint8_t global_brightness_;
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private:
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int8_t prev_bright_[28] = {0};
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};
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class MAX6956GPIOPin : public GPIOPin {
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public:
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void setup() override;
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void pin_mode(gpio::Flags flags) override;
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bool digital_read() override;
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void digital_write(bool value) override;
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std::string dump_summary() const override;
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void set_parent(MAX6956 *parent) { parent_ = parent; }
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void set_pin(uint8_t pin) { pin_ = pin; }
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void set_inverted(bool inverted) { inverted_ = inverted; }
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void set_flags(gpio::Flags flags) { flags_ = flags; }
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protected:
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MAX6956 *parent_;
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uint8_t pin_;
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bool inverted_;
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gpio::Flags flags_;
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};
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} // namespace max6956
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} // namespace esphome
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