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75 lines
1.8 KiB
C++
75 lines
1.8 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 mcp23016 {
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enum MCP23016GPIORegisters {
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// 0 side
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MCP23016_GP0 = 0x00,
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MCP23016_OLAT0 = 0x02,
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MCP23016_IPOL0 = 0x04,
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MCP23016_IODIR0 = 0x06,
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MCP23016_INTCAP0 = 0x08,
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MCP23016_IOCON0 = 0x0A,
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// 1 side
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MCP23016_GP1 = 0x01,
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MCP23016_OLAT1 = 0x03,
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MCP23016_IPOL1 = 0x04,
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MCP23016_IODIR1 = 0x07,
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MCP23016_INTCAP1 = 0x08,
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MCP23016_IOCON1 = 0x0B,
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};
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class MCP23016 : public Component, public i2c::I2CDevice {
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public:
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MCP23016() = 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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float get_setup_priority() const override;
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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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// update registers with given pin value.
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void update_reg_(uint8_t pin, bool pin_value, uint8_t reg_a);
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uint8_t olat_0_{0x00};
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uint8_t olat_1_{0x00};
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};
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class MCP23016GPIOPin : 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(MCP23016 *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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gpio::Flags get_flags() const override { return this->flags_; }
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protected:
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MCP23016 *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 mcp23016
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} // namespace esphome
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