mirror of
https://github.com/esphome/esphome.git
synced 2025-03-29 22:18:12 +00:00
81b7653c9c
* Add support for mcp23008 8-port io expander * add-mcp23008-support * Revert "add-mcp23008-support" This reverts commit b4bc7785b19bf27843b140e56707b935716e3759. * Fixed spacing typo * removed extra space in mcp23008.cpp, line 23 * Fixed trailing whitespace issue * Added mcp23008 component * Added component mcp23008 * Edited typo in test/test1.ymal Removed additional ' in line 1337 * Another typo
70 lines
1.6 KiB
C++
70 lines
1.6 KiB
C++
#pragma once
|
|
|
|
#include "esphome/core/component.h"
|
|
#include "esphome/core/esphal.h"
|
|
#include "esphome/components/i2c/i2c.h"
|
|
|
|
namespace esphome {
|
|
namespace mcp23008 {
|
|
|
|
/// Modes for MCP23008 pins
|
|
enum MCP23008GPIOMode : uint8_t {
|
|
MCP23008_INPUT = INPUT, // 0x00
|
|
MCP23008_INPUT_PULLUP = INPUT_PULLUP, // 0x02
|
|
MCP23008_OUTPUT = OUTPUT // 0x01
|
|
};
|
|
|
|
enum MCP23008GPIORegisters {
|
|
// A side
|
|
MCP23008_IODIR = 0x00,
|
|
MCP23008_IPOL = 0x01,
|
|
MCP23008_GPINTEN = 0x02,
|
|
MCP23008_DEFVAL = 0x03,
|
|
MCP23008_INTCON = 0x04,
|
|
MCP23008_IOCON = 0x05,
|
|
MCP23008_GPPU = 0x06,
|
|
MCP23008_INTF = 0x07,
|
|
MCP23008_INTCAP = 0x08,
|
|
MCP23008_GPIO = 0x09,
|
|
MCP23008_OLAT = 0x0A,
|
|
};
|
|
|
|
class MCP23008 : public Component, public i2c::I2CDevice {
|
|
public:
|
|
MCP23008() = default;
|
|
|
|
void setup() override;
|
|
|
|
bool digital_read(uint8_t pin);
|
|
void digital_write(uint8_t pin, bool value);
|
|
void pin_mode(uint8_t pin, uint8_t mode);
|
|
|
|
float get_setup_priority() const override;
|
|
|
|
protected:
|
|
// read a given register
|
|
bool read_reg_(uint8_t reg, uint8_t *value);
|
|
// write a value to a given register
|
|
bool write_reg_(uint8_t reg, uint8_t value);
|
|
// update registers with given pin value.
|
|
void update_reg_(uint8_t pin, bool pin_value, uint8_t reg_a);
|
|
|
|
uint8_t olat_{0x00};
|
|
};
|
|
|
|
class MCP23008GPIOPin : public GPIOPin {
|
|
public:
|
|
MCP23008GPIOPin(MCP23008 *parent, uint8_t pin, uint8_t mode, bool inverted = false);
|
|
|
|
void setup() override;
|
|
void pin_mode(uint8_t mode) override;
|
|
bool digital_read() override;
|
|
void digital_write(bool value) override;
|
|
|
|
protected:
|
|
MCP23008 *parent_;
|
|
};
|
|
|
|
} // namespace mcp23008
|
|
} // namespace esphome
|